refactor(mode): drop the per-mode tool allowlist — enforce where an enforcer exists

A ModeDefinition is now exactly { section, access? }; unknown keys (a
tools list included) fail loud at load. What plan mode still does: the
guidance section, the exit_plan_mode visibility rule (plan only, both
soft surfaces), the access cap's bash/resolve-mode clamp, and the two
cap-derived pre-execute guards (the bash trio is withheld when no
confining executor can honor the cap; sandbox escalation is denied
while it holds). The general deny-by-default gate and the assemble
allowlist filter are gone: which tools a mode admits is an effects
question, and a hand-maintained name list mislabels it — it must track
every composed tool and rots silently as tools arrive. The dimension
returns as a consumer of effects self-declaration on tool definitions
(MCP ToolAnnotations as the template) — rationale and restart trigger
archived in the RFC's Alternatives/Deferred; the interim guidance-only
non-shell restraint is priced in Consequences.

Exiting plan is now a pure removal (the exit tool + section), which the
delta encoding CAN express: the re-recorded plan-mode fixture pins one
plan-shaped initial header snapshot plus one header-delta instead of
two snapshots.

docs/config-catalog.md

@@ -457,15 +457,14 @@ export interface ModeConfig {
 }
 
 /**
- * One mode's deployment-configured policy: the guidance section the model sees,
- * the allowlist of tool names that stay visible and executable, and an
- * optional cap on the sandbox access shell commands run under.
+ * One mode's deployment-configured policy: the guidance section the model sees
+ * and an optional cap on the sandbox access shell commands run under. There
+ * is deliberately no tool allow/deny list — which tools a mode admits is an
+ * effects question, parked until tool definitions declare their effects.
  */
 export interface ModeDefinition {
   /** Guidance text rendered as the `mode:policy` prompt section while the mode is in force. */
   section: string
-  /** Allowlist of tool NAMES; names may reference not-yet-registered tools (registration is dynamic). */
-  tools: string[]
   /**
    * The widest sandbox access shell commands may run under while this mode is
    * in force — a per-call CAP on the bash seam's resolved mode (a
@@ -479,7 +478,7 @@ export interface ModeDefinition {
 }
 ```
 
-Source: [`packages/mode/mode/src/index.ts:115`](../packages/mode/mode/src/index.ts)
+Source: [`packages/mode/mode/src/index.ts:118`](../packages/mode/mode/src/index.ts)
 
 ## `@deepseek-ai/dsh-repeat-tool-guard`
 

docs/cookbook/extension-cookbook.md

@@ -102,7 +102,7 @@ Every product feature maps to a listener on a documented extension seam — the
 | ToolSearch / progressive disclosure | filter tools at `system-prompt/assemble` (the assembly carries the schemas; the loop logs the result as the request header, so disclosure stays reconstructable) |
 | Subprocess sandbox (landlock / sandbox-exec) | `tools/pre-execute` (deny), or a sandboxing `BashExecutor` on the `dsh-bash` seam |
 | Permission system / AskUserQuestion | `tools/pre-execute` (deny/ask); register an ask tool |
-| Plan mode | Shipped: [`@deepseek-ai/dsh-mode`](../../packages/mode/mode/README.md) — the logged `mode/set` state, the assemble filter + `mode:policy` section, the deny-by-default `tools/pre-execute` gate, and the user-reviewed `exit_plan_mode` exit |
+| Plan mode | Shipped: [`@deepseek-ai/dsh-mode`](../../packages/mode/mode/README.md) — the logged `mode/set` state, the `mode:policy` guidance section, the sandbox `access` cap (a `bash/resolve-mode` clamp + cap-derived bash guards), and the user-reviewed `exit_plan_mode` exit |
 | Sub-agent delegation | the `ctx.subagents` provider registry (`dsh-subagent-spawn`/`-fork`/`-acp`) + `dsh-tool-subagent` exposing one configured provider to the model |
 | MCP | one plugin per server: discover tools → `ctx.tools.register()` |
 | Skills | section + tool registration; `inject()` skill content on invocation |

docs/cordis-catalog/services.md

@@ -174,7 +174,7 @@ set(agent: Agent, mode: string): void
 
 Types: [Agent](../core-data-structures/core.md)
 
-Source: [`packages/mode/mode/src/index.ts:255`](../../packages/mode/mode/src/index.ts)
+Source: [`packages/mode/mode/src/index.ts:252`](../../packages/mode/mode/src/index.ts)
 
 ## `ctx.sandbox` — `SandboxProvider` (abstract seam)
 

docs/persistence-catalog.md

@@ -163,7 +163,7 @@ The session mode in force from this point on: log-only, non-surface, whole-value
 'mode/set': { mode: string }
 ```
 
-Source: [`packages/mode/mode/src/index.ts:49`](../packages/mode/mode/src/index.ts)
+Source: [`packages/mode/mode/src/index.ts:53`](../packages/mode/mode/src/index.ts)
 
 ### `prompt/*`
 

docs/tool-catalog.md

@@ -126,7 +126,7 @@ Registered by the tool registry itself under `mode: code` / `mode: both` (see th
 
 ### `exit_plan_mode`
 
-Present your plan for the user's review and, on approval, leave plan mode. Send the COMPLETE plan as markdown, starting with a # heading that names it. The user may approve (the full toolset returns on your next step) or keep planning — their feedback comes back in the tool result; revise and present again.
+Present your plan for the user's review and, on approval, leave plan mode. Send the COMPLETE plan as markdown, starting with a # heading that names it. The user may approve (carry out the plan from your next step) or keep planning — their feedback comes back in the tool result; revise and present again.
 
 ```json
 {

examples/plan-acp-agent/README.md

@@ -4,7 +4,7 @@ The coding agent as an ACP server with **session modes** composed — the live c
 
 ## What it demonstrates
 
-`session/new` advertises the mode picker (`default` / `plan`) plus the sandbox-mode and approval config options; the editor's `session/set_mode` switches the session, applied at the next turn boundary. The default mode carries the full composition — `bash` under a `workspace-write` sandbox, `read`/`write`/`edit`, `todo_write`, `ask_user_question` — while plan mode narrows it to the read-only allowlist plus the plan-mode guidance section. The bash tools STAY available in plan: plan's `access: read-only` cap clamps the sandbox resolution per call (a `bash/resolve-mode` waterfall listener), so exploration commands run for real while a write is denied by the sandbox itself — and the session's own sandbox-mode knob is never written, so it re-emerges intact on exit. Sandbox escalation (`sandbox_permissions`) is denied inside plan — the widened step belongs in the plan; in the default mode it raises a real `session/request_permission` prompt through the approval seam. Every call outside the allowlist is denied at `tools/pre-execute` with a reason that steers it back to planning, and a blocking decision goes to the user through `ask_user_question`. The model leaves by presenting its plan through `exit_plan_mode`: the plan markdown renders as the tool's call card, the review question arrives as an elicitation form (approve / keep planning, free text welcome), and a keep-planning answer returns the feedback to the model verbatim.
+`session/new` advertises the mode picker (`default` / `plan`) plus the sandbox-mode and approval config options; the editor's `session/set_mode` switches the session, applied at the next turn boundary. Plan mode adds the plan guidance section and the `exit_plan_mode` tool, and enforces its read-only stance where an enforcer exists: plan's `access: read-only` cap clamps every bash call's sandbox resolution (a `bash/resolve-mode` waterfall listener), so exploration commands run for real while a write is denied by the sandbox itself — and the session's own sandbox-mode knob is never written, so it re-emerges intact on exit. Sandbox escalation (`sandbox_permissions`) is denied inside plan — the widened step belongs in the plan; in the default mode it raises a real `session/request_permission` prompt through the approval seam. There is deliberately no per-mode tool list: the `write`/`edit` tools stay present in plan and the section's guidance is what defers changes to after the review (the effects-based generalization is the RFC's deferred item). A blocking decision goes to the user through `ask_user_question`. The model leaves by presenting its plan through `exit_plan_mode`: the plan markdown renders as the tool's call card, the review question arrives as an elicitation form (approve / keep planning, free text welcome), and a keep-planning answer returns the feedback to the model verbatim.
 
 ## Run
 
@@ -12,8 +12,8 @@ The coding agent as an ACP server with **session modes** composed — the live c
 pnpm run demo:plan-acp   # needs DEEPSEEK_API_KEY (repo-root .env works)
 ```
 
-Drive it from Zed or any ACP client; the mode picker appears on the session. Switching back to `default` (or an approved `exit_plan_mode`) restores the full toolset on the next step.
+Drive it from Zed or any ACP client; the mode picker appears on the session. Switching back to `default` (or an approved `exit_plan_mode`) lifts the plan constraints — the sandbox clamp included — on the next step.
 
 ## Tests
 
-`pnpm run test:snapshot` replays three scenarios keyless (the recorded bash re-executes for real under the host's sandbox runner — Seatbelt on macOS, bwrap on Linux CI). `modes-advertise` (authored): the `modes` advertisement and both config options on `session/new`, both `session/set_mode` round-trips with their optimistic `current_mode_update`, and the loud rejection of an unknown mode id, as committed wire bytes. `plan-mode` (recorded, the header pin): the full arc — setMode(plan), the plan-shaped initial header, a real `cat` run inside plan under the clamped read-only sandbox, the plan presented via `exit_plan_mode`, a scripted elicitation approve, the boundary-flushed `mode/set` back and the widened fallback header, then a real edit under the restored toolset. `plan-mode-reject` (recorded): the keep-planning branch, whose corrective `isError` carries the reviewer's free-text feedback verbatim and leaves the session in plan mode. The gate's deny texts and the sandbox-denial marker stay pinned at the unit tier (`packages/mode/mode/tests`, `packages/bash/tool-bash/tests` — a recorded denial's stderr would be the backend's dialect and replay only where it was recorded).
+`pnpm run test:snapshot` replays three scenarios keyless (the recorded bash re-executes for real under the host's sandbox runner — Seatbelt on macOS, bwrap on Linux CI). `modes-advertise` (authored): the `modes` advertisement and both config options on `session/new`, both `session/set_mode` round-trips with their optimistic `current_mode_update`, and the loud rejection of an unknown mode id, as committed wire bytes. `plan-mode` (recorded, the header pin): the full arc — setMode(plan), the plan-shaped initial header (full toolset + exit tool + section), a real `cat` run inside plan under the clamped read-only sandbox, the plan presented via `exit_plan_mode`, a scripted elicitation approve, the boundary-flushed `mode/set` back with its pure-removal `request/header-delta`, then a real edit mid-turn. `plan-mode-reject` (recorded): the keep-planning branch, whose corrective `isError` carries the reviewer's free-text feedback verbatim and leaves the session in plan mode. The cap-guard deny texts and the sandbox-denial marker stay pinned at the unit tier (`packages/mode/mode/tests`, `packages/bash/tool-bash/tests` — a recorded denial's stderr would be the backend's dialect and replay only where it was recorded).

examples/plan-acp-agent/cordis.yml

@@ -1,9 +1,9 @@
 # The plan-acp-agent plugin tree: the coding agent served over the Agent
 # Client Protocol WITH session modes composed — the plan-mode RFC's live
 # composition. The editor's mode picker (session/set_mode) switches the
-# session between `default` and `plan`; in plan mode the model works under the
-# read-only allowlist — bash INCLUDED, clamped to a read-only sandbox by plan
-# mode's `access` cap — and leaves through the user-reviewed exit_plan_mode
+# session between `default` and `plan`; in plan mode the model works under
+# the plan guidance section with bash clamped to a read-only sandbox by plan
+# mode's `access` cap, and leaves through the user-reviewed exit_plan_mode
 # tool (the review rides the same elicitation flow as ask_user_question).
 #
 # CRITICAL: this tree loads NO stdout logger and NO hmr — stdout is reserved
@@ -37,11 +37,10 @@
 
       Verify your work by running the code or tests. Keep answers brief and factual.
 
-# Session modes (ctx.modes — the shipped `plan` definition, no overrides): the
-# mode/set vocabulary, the assemble filter + mode section, the pre-execute
-# gate, the exit_plan_mode tool, and plan's read-only `access` cap on the
-# sandbox stack below. The ACP bridge above reads it opportunistically and
-# advertises the picker.
+# Session modes (ctx.modes — the shipped `plan` definition, no overrides):
+# the mode/set vocabulary, the mode section, the exit_plan_mode tool, and
+# plan's read-only `access` cap on the sandbox stack below. The ACP bridge
+# above reads it opportunistically and advertises the picker.
 - id: mode
   name: '@deepseek-ai/dsh-mode'
 
@@ -75,15 +74,16 @@
 - id: approval
   name: '@deepseek-ai/dsh-user-approval'
 
-# The model-facing ask_user_question tool: ON plan mode's allowlist, so the
-# model can raise a blocking decision to the user while planning; the review
-# and the questions ride the same elicitation flow.
+# The model-facing ask_user_question tool: the plan section tells the model
+# to raise a blocking decision to the user while planning; the review and
+# the questions ride the same elicitation flow.
 - id: tool-ask-user
   name: '@deepseek-ai/dsh-tool-ask-user'
 
 # Filesystem capability stack: local provider, read-before-write/edit policy
-# gate, then the model-facing read/write/edit tools — `read` is on plan mode's
-# allowlist; `write`/`edit` are what the plan-mode gate denies.
+# gate, then the model-facing read/write/edit tools. Plan mode restrains
+# these by guidance only (the section says changes belong in the plan) — the
+# enforced boundary in plan is the bash sandbox clamp above.
 - id: fs-local
   name: '@deepseek-ai/dsh-fs-local'
   config:
@@ -95,7 +95,7 @@
 - id: tool-fs
   name: '@deepseek-ai/dsh-tool-fs'
 
-# The model-facing todo_write tool — allowlisted in plan mode, so the model
-# can track its plan while exploring.
+# The model-facing todo_write tool — the model tracks its plan while
+# exploring.
 - id: tool-todo
   name: '@deepseek-ai/dsh-tool-todo'

examples/plan-acp-agent/tests/acp.snapshot.ts

@@ -45,16 +45,15 @@ const SCENARIOS: Scenario[] = [
   { name: 'modes-advertise', hasModelTurn: false, recorded: false },
   // The full plan-mode arc, and NECESSARILY the pinned-header scenario for
   // the 'plan' class: the first request ships the plan-shaped header (reason
-  // initial), the approved exit widens it back — a second, fallback snapshot
-  // (adding/removing exit_plan_mode resorts the canonical tool list, which
-  // the delta encoding cannot express) — so this composition's full header
-  // content, both shapes, is committed here verbatim. The arc: setMode(plan)
-  // → the model reads under the plan allowlist (it never attempts the
-  // filtered write — the deny path stays pinned at the unit tier) and
+  // initial) — the full toolset plus exit_plan_mode and the mode section —
+  // and the approved exit narrows it back by exactly that tool and section,
+  // a pure removal the delta encoding CAN express (one header-delta; the
+  // ENTERING flip's front-of-list insertion has no delta form and falls back
+  // to a snapshot, pinned at the unit tier). The arc: setMode(plan) → the
+  // model runs a real `cat` through the clamped read-only sandbox and
   // presents the plan via exit_plan_mode → the scripted elicitation approves
-  // → the very next step already runs the widened toolset and writes for
-  // real, mid-turn.
-  { name: 'plan-mode', hasModelTurn: true, recorded: true, pinsHeader: true, headerClass: 'plan', expectedHeaderSnapshots: 2 },
+  // → the very next step already runs unclamped and edits for real, mid-turn.
+  { name: 'plan-mode', hasModelTurn: true, recorded: true, pinsHeader: true, headerClass: 'plan', expectedHeaderDeltas: 1 },
   // The keep-planning branch: one presentation, the scripted review answers
   // with free-text feedback (no approval), and the corrective isError carries
   // it back verbatim — the session stays in plan mode, so the log holds one

examples/plan-acp-agent/tests/snapshots/plan-mode-reject/stdout.golden.jsonl

@@ -2,35 +2,56 @@
 {"jsonrpc":"2.0","id":2,"result":{"sessionId":"{{sessionId}}","modes":{"availableModes":[{"id":"default","name":"default"},{"id":"plan","name":"plan"}],"currentModeId":"default"},"configOptions":[{"id":"sandbox-mode","name":"Sandbox","description":"The file sandbox mode bash commands in this session run under.","category":"mode","type":"select","currentValue":"workspace-write","options":[{"value":"read-only","name":"read-only"},{"value":"workspace-write","name":"workspace-write"},{"value":"danger-full-access","name":"danger-full-access"}]},{"id":"approval-policy","name":"Approvals","description":"ask: permission prompts reach you; never: they are rejected automatically.","type":"select","currentValue":"ask","options":[{"value":"ask","name":"ask"},{"value":"never","name":"never"}]}]}}
 {"jsonrpc":"2.0","method":"session/update","params":{"sessionId":"{{sessionId}}","update":{"sessionUpdate":"current_mode_update","currentModeId":"plan"}}}
 {"jsonrpc":"2.0","id":3,"result":{}}
-{"jsonrpc":"2.0","method":"session/update","params":{"sessionId":"{{sessionId}}","update":{"sessionUpdate":"agent_thought_chunk","content":{"type":"text","text":"Let"}}}}
+{"jsonrpc":"2.0","method":"session/update","params":{"sessionId":"{{sessionId}}","update":{"sessionUpdate":"agent_thought_chunk","content":{"type":"text","text":"The"}}}}
+{"jsonrpc":"2.0","method":"session/update","params":{"sessionId":"{{sessionId}}","update":{"sessionUpdate":"agent_thought_chunk","content":{"type":"text","text":" user"}}}}
+{"jsonrpc":"2.0","method":"session/update","params":{"sessionId":"{{sessionId}}","update":{"sessionUpdate":"agent_thought_chunk","content":{"type":"text","text":" wants"}}}}
+{"jsonrpc":"2.0","method":"session/update","params":{"sessionId":"{{sessionId}}","update":{"sessionUpdate":"agent_thought_chunk","content":{"type":"text","text":" me"}}}}
+{"jsonrpc":"2.0","method":"session/update","params":{"sessionId":"{{sessionId}}","update":{"sessionUpdate":"agent_thought_chunk","content":{"type":"text","text":" to"}}}}
+{"jsonrpc":"2.0","method":"session/update","params":{"sessionId":"{{sessionId}}","update":{"sessionUpdate":"agent_thought_chunk","content":{"type":"text","text":" read"}}}}
+{"jsonrpc":"2.0","method":"session/update","params":{"sessionId":"{{sessionId}}","update":{"sessionUpdate":"agent_thought_chunk","content":{"type":"text","text":" the"}}}}
+{"jsonrpc":"2.0","method":"session/update","params":{"sessionId":"{{sessionId}}","update":{"sessionUpdate":"agent_thought_chunk","content":{"type":"text","text":" file"}}}}
+{"jsonrpc":"2.0","method":"session/update","params":{"sessionId":"{{sessionId}}","update":{"sessionUpdate":"agent_thought_chunk","content":{"type":"text","text":" notes"}}}}
+{"jsonrpc":"2.0","method":"session/update","params":{"sessionId":"{{sessionId}}","update":{"sessionUpdate":"agent_thought_chunk","content":{"type":"text","text":".txt"}}}}
+{"jsonrpc":"2.0","method":"session/update","params":{"sessionId":"{{sessionId}}","update":{"sessionUpdate":"agent_thought_chunk","content":{"type":"text","text":" using"}}}}
+{"jsonrpc":"2.0","method":"session/update","params":{"sessionId":"{{sessionId}}","update":{"sessionUpdate":"agent_thought_chunk","content":{"type":"text","text":" the"}}}}
+{"jsonrpc":"2.0","method":"session/update","params":{"sessionId":"{{sessionId}}","update":{"sessionUpdate":"agent_thought_chunk","content":{"type":"text","text":" relative"}}}}
+{"jsonrpc":"2.0","method":"session/update","params":{"sessionId":"{{sessionId}}","update":{"sessionUpdate":"agent_thought_chunk","content":{"type":"text","text":" path"}}}}
+{"jsonrpc":"2.0","method":"session/update","params":{"sessionId":"{{sessionId}}","update":{"sessionUpdate":"agent_thought_chunk","content":{"type":"text","text":","}}}}
+{"jsonrpc":"2.0","method":"session/update","params":{"sessionId":"{{sessionId}}","update":{"sessionUpdate":"agent_thought_chunk","content":{"type":"text","text":" then"}}}}
+{"jsonrpc":"2.0","method":"session/update","params":{"sessionId":"{{sessionId}}","update":{"sessionUpdate":"agent_thought_chunk","content":{"type":"text","text":" present"}}}}
+{"jsonrpc":"2.0","method":"session/update","params":{"sessionId":"{{sessionId}}","update":{"sessionUpdate":"agent_thought_chunk","content":{"type":"text","text":" a"}}}}
+{"jsonrpc":"2.0","method":"session/update","params":{"sessionId":"{{sessionId}}","update":{"sessionUpdate":"agent_thought_chunk","content":{"type":"text","text":" plan"}}}}
+{"jsonrpc":"2.0","method":"session/update","params":{"sessionId":"{{sessionId}}","update":{"sessionUpdate":"agent_thought_chunk","content":{"type":"text","text":" via"}}}}
+{"jsonrpc":"2.0","method":"session/update","params":{"sessionId":"{{sessionId}}","update":{"sessionUpdate":"agent_thought_chunk","content":{"type":"text","text":" exit"}}}}
+{"jsonrpc":"2.0","method":"session/update","params":{"sessionId":"{{sessionId}}","update":{"sessionUpdate":"agent_thought_chunk","content":{"type":"text","text":"_"}}}}
+{"jsonrpc":"2.0","method":"session/update","params":{"sessionId":"{{sessionId}}","update":{"sessionUpdate":"agent_thought_chunk","content":{"type":"text","text":"plan"}}}}
+{"jsonrpc":"2.0","method":"session/update","params":{"sessionId":"{{sessionId}}","update":{"sessionUpdate":"agent_thought_chunk","content":{"type":"text","text":"_mode"}}}}
+{"jsonrpc":"2.0","method":"session/update","params":{"sessionId":"{{sessionId}}","update":{"sessionUpdate":"agent_thought_chunk","content":{"type":"text","text":"."}}}}
+{"jsonrpc":"2.0","method":"session/update","params":{"sessionId":"{{sessionId}}","update":{"sessionUpdate":"agent_thought_chunk","content":{"type":"text","text":" Let"}}}}
 {"jsonrpc":"2.0","method":"session/update","params":{"sessionId":"{{sessionId}}","update":{"sessionUpdate":"agent_thought_chunk","content":{"type":"text","text":" me"}}}}
 {"jsonrpc":"2.0","method":"session/update","params":{"sessionId":"{{sessionId}}","update":{"sessionUpdate":"agent_thought_chunk","content":{"type":"text","text":" start"}}}}
 {"jsonrpc":"2.0","method":"session/update","params":{"sessionId":"{{sessionId}}","update":{"sessionUpdate":"agent_thought_chunk","content":{"type":"text","text":" by"}}}}
 {"jsonrpc":"2.0","method":"session/update","params":{"sessionId":"{{sessionId}}","update":{"sessionUpdate":"agent_thought_chunk","content":{"type":"text","text":" reading"}}}}
 {"jsonrpc":"2.0","method":"session/update","params":{"sessionId":"{{sessionId}}","update":{"sessionUpdate":"agent_thought_chunk","content":{"type":"text","text":" the"}}}}
-{"jsonrpc":"2.0","method":"session/update","params":{"sessionId":"{{sessionId}}","update":{"sessionUpdate":"agent_thought_chunk","content":{"type":"text","text":" notes"}}}}
-{"jsonrpc":"2.0","method":"session/update","params":{"sessionId":"{{sessionId}}","update":{"sessionUpdate":"agent_thought_chunk","content":{"type":"text","text":".txt"}}}}
 {"jsonrpc":"2.0","method":"session/update","params":{"sessionId":"{{sessionId}}","update":{"sessionUpdate":"agent_thought_chunk","content":{"type":"text","text":" file"}}}}
-{"jsonrpc":"2.0","method":"session/update","params":{"sessionId":"{{sessionId}}","update":{"sessionUpdate":"agent_thought_chunk","content":{"type":"text","text":" to"}}}}
-{"jsonrpc":"2.0","method":"session/update","params":{"sessionId":"{{sessionId}}","update":{"sessionUpdate":"agent_thought_chunk","content":{"type":"text","text":" understand"}}}}
-{"jsonrpc":"2.0","method":"session/update","params":{"sessionId":"{{sessionId}}","update":{"sessionUpdate":"agent_thought_chunk","content":{"type":"text","text":" what"}}}}
-{"jsonrpc":"2.0","method":"session/update","params":{"sessionId":"{{sessionId}}","update":{"sessionUpdate":"agent_thought_chunk","content":{"type":"text","text":" needs"}}}}
-{"jsonrpc":"2.0","method":"session/update","params":{"sessionId":"{{sessionId}}","update":{"sessionUpdate":"agent_thought_chunk","content":{"type":"text","text":" to"}}}}
-{"jsonrpc":"2.0","method":"session/update","params":{"sessionId":"{{sessionId}}","update":{"sessionUpdate":"agent_thought_chunk","content":{"type":"text","text":" be"}}}}
-{"jsonrpc":"2.0","method":"session/update","params":{"sessionId":"{{sessionId}}","update":{"sessionUpdate":"agent_thought_chunk","content":{"type":"text","text":" fixed"}}}}
 {"jsonrpc":"2.0","method":"session/update","params":{"sessionId":"{{sessionId}}","update":{"sessionUpdate":"agent_thought_chunk","content":{"type":"text","text":"."}}}}
-{"jsonrpc":"2.0","method":"session/update","params":{"sessionId":"{{sessionId}}","update":{"sessionUpdate":"tool_call","toolCallId":"call_00_ltzaxVVnRQqSbBi9bB7Y2194","title":"Read notes.txt","kind":"read","status":"in_progress","locations":[{"path":"notes.txt","line":1}]}}}
-{"jsonrpc":"2.0","method":"session/update","params":{"sessionId":"{{sessionId}}","update":{"sessionUpdate":"tool_call_update","toolCallId":"call_00_ltzaxVVnRQqSbBi9bB7Y2194","status":"completed","content":[{"type":"content","content":{"type":"text","text":"<path>{{cwd}}/notes.txt</path>\n<type>file</type>\n<content>\n1: project notes\n2: - the greeting message still says \"helo wrld\"\n\n(End of file - total 2 lines)\n</content>"}}]}}}
+{"jsonrpc":"2.0","method":"session/update","params":{"sessionId":"{{sessionId}}","update":{"sessionUpdate":"tool_call","toolCallId":"call_00_LZRw8a4WQUv7TkNb161T5268","title":"Read notes.txt","kind":"read","status":"in_progress","locations":[{"path":"notes.txt","line":1}]}}}
+{"jsonrpc":"2.0","method":"session/update","params":{"sessionId":"{{sessionId}}","update":{"sessionUpdate":"tool_call_update","toolCallId":"call_00_LZRw8a4WQUv7TkNb161T5268","status":"completed","content":[{"type":"content","content":{"type":"text","text":"<path>{{cwd}}/notes.txt</path>\n<type>file</type>\n<content>\n1: project notes\n2: - the greeting message still says \"helo wrld\"\n\n(End of file - total 2 lines)\n</content>"}}]}}}
 {"jsonrpc":"2.0","method":"session/update","params":{"sessionId":"{{sessionId}}","update":{"sessionUpdate":"agent_thought_chunk","content":{"type":"text","text":"The"}}}}
 {"jsonrpc":"2.0","method":"session/update","params":{"sessionId":"{{sessionId}}","update":{"sessionUpdate":"agent_thought_chunk","content":{"type":"text","text":" file"}}}}
+{"jsonrpc":"2.0","method":"session/update","params":{"sessionId":"{{sessionId}}","update":{"sessionUpdate":"agent_thought_chunk","content":{"type":"text","text":" notes"}}}}
+{"jsonrpc":"2.0","method":"session/update","params":{"sessionId":"{{sessionId}}","update":{"sessionUpdate":"agent_thought_chunk","content":{"type":"text","text":".txt"}}}}
 {"jsonrpc":"2.0","method":"session/update","params":{"sessionId":"{{sessionId}}","update":{"sessionUpdate":"agent_thought_chunk","content":{"type":"text","text":" contains"}}}}
 {"jsonrpc":"2.0","method":"session/update","params":{"sessionId":"{{sessionId}}","update":{"sessionUpdate":"agent_thought_chunk","content":{"type":"text","text":" a"}}}}
 {"jsonrpc":"2.0","method":"session/update","params":{"sessionId":"{{sessionId}}","update":{"sessionUpdate":"agent_thought_chunk","content":{"type":"text","text":" note"}}}}
 {"jsonrpc":"2.0","method":"session/update","params":{"sessionId":"{{sessionId}}","update":{"sessionUpdate":"agent_thought_chunk","content":{"type":"text","text":" about"}}}}
 {"jsonrpc":"2.0","method":"session/update","params":{"sessionId":"{{sessionId}}","update":{"sessionUpdate":"agent_thought_chunk","content":{"type":"text","text":" a"}}}}
-{"jsonrpc":"2.0","method":"session/update","params":{"sessionId":"{{sessionId}}","update":{"sessionUpdate":"agent_thought_chunk","content":{"type":"text","text":" greeting"}}}}
 {"jsonrpc":"2.0","method":"session/update","params":{"sessionId":"{{sessionId}}","update":{"sessionUpdate":"agent_thought_chunk","content":{"type":"text","text":" typ"}}}}
 {"jsonrpc":"2.0","method":"session/update","params":{"sessionId":"{{sessionId}}","update":{"sessionUpdate":"agent_thought_chunk","content":{"type":"text","text":"o"}}}}
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@@ -41,11 +62,7 @@
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-{"jsonrpc":"2.0","method":"session/update","params":{"sessionId":"{{sessionId}}","update":{"sessionUpdate":"agent_thought_chunk","content":{"type":"text","text":"hello"}}}}
-{"jsonrpc":"2.0","method":"session/update","params":{"sessionId":"{{sessionId}}","update":{"sessionUpdate":"agent_thought_chunk","content":{"type":"text","text":" world"}}}}
-{"jsonrpc":"2.0","method":"session/update","params":{"sessionId":"{{sessionId}}","update":{"sessionUpdate":"agent_thought_chunk","content":{"type":"text","text":"\"."}}}}
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@@ -67,21 +84,207 @@
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+{"jsonrpc":"2.0","method":"session/update","params":{"sessionId":"{{sessionId}}","update":{"sessionUpdate":"agent_thought_chunk","content":{"type":"text","text":" verification"}}}}
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@@ -92,25 +295,12 @@
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-{"jsonrpc":"2.0","method":"session/update","params":{"sessionId":"{{sessionId}}","update":{"sessionUpdate":"agent_thought_chunk","content":{"type":"text","text":" verify"}}}}
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@@ -137,8 +327,25 @@
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+{"jsonrpc":"2.0","method":"session/update","params":{"sessionId":"{{sessionId}}","update":{"sessionUpdate":"agent_thought_chunk","content":{"type":"text","text":" feedback"}}}}
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@@ -153,51 +360,79 @@
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 {"jsonrpc":"2.0","method":"session/update","params":{"sessionId":"{{sessionId}}","update":{"sessionUpdate":"agent_message_chunk","content":{"type":"text","text":" after"}}}}
 {"jsonrpc":"2.0","method":"session/update","params":{"sessionId":"{{sessionId}}","update":{"sessionUpdate":"agent_message_chunk","content":{"type":"text","text":" the"}}}}
 {"jsonrpc":"2.0","method":"session/update","params":{"sessionId":"{{sessionId}}","update":{"sessionUpdate":"agent_message_chunk","content":{"type":"text","text":" fix"}}}}
 {"jsonrpc":"2.0","method":"session/update","params":{"sessionId":"{{sessionId}}","update":{"sessionUpdate":"agent_message_chunk","content":{"type":"text","text":" to"}}}}
-{"jsonrpc":"2.0","method":"session/update","params":{"sessionId":"{{sessionId}}","update":{"sessionUpdate":"agent_message_chunk","content":{"type":"text","text":" confirm"}}}}
-{"jsonrpc":"2.0","method":"session/update","params":{"sessionId":"{{sessionId}}","update":{"sessionUpdate":"agent_message_chunk","content":{"type":"text","text":" the"}}}}
-{"jsonrpc":"2.0","method":"session/update","params":{"sessionId":"{{sessionId}}","update":{"sessionUpdate":"agent_message_chunk","content":{"type":"text","text":" change"}}}}
+{"jsonrpc":"2.0","method":"session/update","params":{"sessionId":"{{sessionId}}","update":{"sessionUpdate":"agent_message_chunk","content":{"type":"text","text":" verify"}}}}
+{"jsonrpc":"2.0","method":"session/update","params":{"sessionId":"{{sessionId}}","update":{"sessionUpdate":"agent_message_chunk","content":{"type":"text","text":" it"}}}}
 {"jsonrpc":"2.0","method":"session/update","params":{"sessionId":"{{sessionId}}","update":{"sessionUpdate":"agent_message_chunk","content":{"type":"text","text":" was"}}}}
 {"jsonrpc":"2.0","method":"session/update","params":{"sessionId":"{{sessionId}}","update":{"sessionUpdate":"agent_message_chunk","content":{"type":"text","text":" applied"}}}}
+{"jsonrpc":"2.0","method":"session/update","params":{"sessionId":"{{sessionId}}","update":{"sessionUpdate":"agent_message_chunk","content":{"type":"text","text":" correctly"}}}}
 {"jsonrpc":"2.0","method":"session/update","params":{"sessionId":"{{sessionId}}","update":{"sessionUpdate":"agent_message_chunk","content":{"type":"text","text":"."}}}}
 {"jsonrpc":"2.0","method":"session/update","params":{"sessionId":"{{sessionId}}","update":{"sessionUpdate":"agent_message_chunk","content":{"type":"text","text":" The"}}}}
+{"jsonrpc":"2.0","method":"session/update","params":{"sessionId":"{{sessionId}}","update":{"sessionUpdate":"agent_message_chunk","content":{"type":"text","text":" original"}}}}
 {"jsonrpc":"2.0","method":"session/update","params":{"sessionId":"{{sessionId}}","update":{"sessionUpdate":"agent_message_chunk","content":{"type":"text","text":" plan"}}}}
-{"jsonrpc":"2.0","method":"session/update","params":{"sessionId":"{{sessionId}}","update":{"sessionUpdate":"agent_message_chunk","content":{"type":"text","text":" should"}}}}
-{"jsonrpc":"2.0","method":"session/update","params":{"sessionId":"{{sessionId}}","update":{"sessionUpdate":"agent_message_chunk","content":{"type":"text","text":" be"}}}}
-{"jsonrpc":"2.0","method":"session/update","params":{"sessionId":"{{sessionId}}","update":{"sessionUpdate":"agent_message_chunk","content":{"type":"text","text":" updated"}}}}
-{"jsonrpc":"2.0","method":"session/update","params":{"sessionId":"{{sessionId}}","update":{"sessionUpdate":"agent_message_chunk","content":{"type":"text","text":" to"}}}}
-{"jsonrpc":"2.0","method":"session/update","params":{"sessionId":"{{sessionId}}","update":{"sessionUpdate":"agent_message_chunk","content":{"type":"text","text":" add"}}}}
-{"jsonrpc":"2.0","method":"session/update","params":{"sessionId":"{{sessionId}}","update":{"sessionUpdate":"agent_message_chunk","content":{"type":"text","text":" that"}}}}
-{"jsonrpc":"2.0","method":"session/update","params":{"sessionId":"{{sessionId}}","update":{"sessionUpdate":"agent_message_chunk","content":{"type":"text","text":" verification"}}}}
+{"jsonrpc":"2.0","method":"session/update","params":{"sessionId":"{{sessionId}}","update":{"sessionUpdate":"agent_message_chunk","content":{"type":"text","text":"'s"}}}}
 {"jsonrpc":"2.0","method":"session/update","params":{"sessionId":"{{sessionId}}","update":{"sessionUpdate":"agent_message_chunk","content":{"type":"text","text":" step"}}}}
+{"jsonrpc":"2.0","method":"session/update","params":{"sessionId":"{{sessionId}}","update":{"sessionUpdate":"agent_message_chunk","content":{"type":"text","text":" "}}}}
+{"jsonrpc":"2.0","method":"session/update","params":{"sessionId":"{{sessionId}}","update":{"sessionUpdate":"agent_message_chunk","content":{"type":"text","text":"3"}}}}
+{"jsonrpc":"2.0","method":"session/update","params":{"sessionId":"{{sessionId}}","update":{"sessionUpdate":"agent_message_chunk","content":{"type":"text","text":" (\""}}}}
+{"jsonrpc":"2.0","method":"session/update","params":{"sessionId":"{{sessionId}}","update":{"sessionUpdate":"agent_message_chunk","content":{"type":"text","text":"Verify"}}}}
+{"jsonrpc":"2.0","method":"session/update","params":{"sessionId":"{{sessionId}}","update":{"sessionUpdate":"agent_message_chunk","content":{"type":"text","text":" —"}}}}
+{"jsonrpc":"2.0","method":"session/update","params":{"sessionId":"{{sessionId}}","update":{"sessionUpdate":"agent_message_chunk","content":{"type":"text","text":" Confirm"}}}}
+{"jsonrpc":"2.0","method":"session/update","params":{"sessionId":"{{sessionId}}","update":{"sessionUpdate":"agent_message_chunk","content":{"type":"text","text":" the"}}}}
+{"jsonrpc":"2.0","method":"session/update","params":{"sessionId":"{{sessionId}}","update":{"sessionUpdate":"agent_message_chunk","content":{"type":"text","text":" fix"}}}}
+{"jsonrpc":"2.0","method":"session/update","params":{"sessionId":"{{sessionId}}","update":{"sessionUpdate":"agent_message_chunk","content":{"type":"text","text":" is"}}}}
+{"jsonrpc":"2.0","method":"session/update","params":{"sessionId":"{{sessionId}}","update":{"sessionUpdate":"agent_message_chunk","content":{"type":"text","text":" correct"}}}}
+{"jsonrpc":"2.0","method":"session/update","params":{"sessionId":"{{sessionId}}","update":{"sessionUpdate":"agent_message_chunk","content":{"type":"text","text":" by"}}}}
+{"jsonrpc":"2.0","method":"session/update","params":{"sessionId":"{{sessionId}}","update":{"sessionUpdate":"agent_message_chunk","content":{"type":"text","text":" reading"}}}}
+{"jsonrpc":"2.0","method":"session/update","params":{"sessionId":"{{sessionId}}","update":{"sessionUpdate":"agent_message_chunk","content":{"type":"text","text":" the"}}}}
+{"jsonrpc":"2.0","method":"session/update","params":{"sessionId":"{{sessionId}}","update":{"sessionUpdate":"agent_message_chunk","content":{"type":"text","text":" changed"}}}}
+{"jsonrpc":"2.0","method":"session/update","params":{"sessionId":"{{sessionId}}","update":{"sessionUpdate":"agent_message_chunk","content":{"type":"text","text":" file"}}}}
+{"jsonrpc":"2.0","method":"session/update","params":{"sessionId":"{{sessionId}}","update":{"sessionUpdate":"agent_message_chunk","content":{"type":"text","text":"(s"}}}}
+{"jsonrpc":"2.0","method":"session/update","params":{"sessionId":"{{sessionId}}","update":{"sessionUpdate":"agent_message_chunk","content":{"type":"text","text":")."}}}}
+{"jsonrpc":"2.0","method":"session/update","params":{"sessionId":"{{sessionId}}","update":{"sessionUpdate":"agent_message_chunk","content":{"type":"text","text":"\")"}}}}
+{"jsonrpc":"2.0","method":"session/update","params":{"sessionId":"{{sessionId}}","update":{"sessionUpdate":"agent_message_chunk","content":{"type":"text","text":" already"}}}}
+{"jsonrpc":"2.0","method":"session/update","params":{"sessionId":"{{sessionId}}","update":{"sessionUpdate":"agent_message_chunk","content":{"type":"text","text":" covers"}}}}
+{"jsonrpc":"2.0","method":"session/update","params":{"sessionId":"{{sessionId}}","update":{"sessionUpdate":"agent_message_chunk","content":{"type":"text","text":" this"}}}}
+{"jsonrpc":"2.0","method":"session/update","params":{"sessionId":"{{sessionId}}","update":{"sessionUpdate":"agent_message_chunk","content":{"type":"text","text":","}}}}
+{"jsonrpc":"2.0","method":"session/update","params":{"sessionId":"{{sessionId}}","update":{"sessionUpdate":"agent_message_chunk","content":{"type":"text","text":" but"}}}}
+{"jsonrpc":"2.0","method":"session/update","params":{"sessionId":"{{sessionId}}","update":{"sessionUpdate":"agent_message_chunk","content":{"type":"text","text":" the"}}}}
+{"jsonrpc":"2.0","method":"session/update","params":{"sessionId":"{{sessionId}}","update":{"sessionUpdate":"agent_message_chunk","content":{"type":"text","text":" wording"}}}}
+{"jsonrpc":"2.0","method":"session/update","params":{"sessionId":"{{sessionId}}","update":{"sessionUpdate":"agent_message_chunk","content":{"type":"text","text":" wasn"}}}}
+{"jsonrpc":"2.0","method":"session/update","params":{"sessionId":"{{sessionId}}","update":{"sessionUpdate":"agent_message_chunk","content":{"type":"text","text":"'t"}}}}
+{"jsonrpc":"2.0","method":"session/update","params":{"sessionId":"{{sessionId}}","update":{"sessionUpdate":"agent_message_chunk","content":{"type":"text","text":" clear"}}}}
+{"jsonrpc":"2.0","method":"session/update","params":{"sessionId":"{{sessionId}}","update":{"sessionUpdate":"agent_message_chunk","content":{"type":"text","text":" enough"}}}}
 {"jsonrpc":"2.0","method":"session/update","params":{"sessionId":"{{sessionId}}","update":{"sessionUpdate":"agent_message_chunk","content":{"type":"text","text":"."}}}}
-{"jsonrpc":"2.0","method":"session/update","params":{"sessionId":"{{sessionId}}","update":{"sessionUpdate":"agent_message_chunk","content":{"type":"text","text":" Since"}}}}
 {"jsonrpc":"2.0","method":"session/update","params":{"sessionId":"{{sessionId}}","update":{"sessionUpdate":"agent_message_chunk","content":{"type":"text","text":" I"}}}}
-{"jsonrpc":"2.0","method":"session/update","params":{"sessionId":"{{sessionId}}","update":{"sessionUpdate":"agent_message_chunk","content":{"type":"text","text":"'m"}}}}
-{"jsonrpc":"2.0","method":"session/update","params":{"sessionId":"{{sessionId}}","update":{"sessionUpdate":"agent_message_chunk","content":{"type":"text","text":" not"}}}}
-{"jsonrpc":"2.0","method":"session/update","params":{"sessionId":"{{sessionId}}","update":{"sessionUpdate":"agent_message_chunk","content":{"type":"text","text":" allowed"}}}}
+{"jsonrpc":"2.0","method":"session/update","params":{"sessionId":"{{sessionId}}","update":{"sessionUpdate":"agent_message_chunk","content":{"type":"text","text":"'ll"}}}}
+{"jsonrpc":"2.0","method":"session/update","params":{"sessionId":"{{sessionId}}","update":{"sessionUpdate":"agent_message_chunk","content":{"type":"text","text":" keep"}}}}
+{"jsonrpc":"2.0","method":"session/update","params":{"sessionId":"{{sessionId}}","update":{"sessionUpdate":"agent_message_chunk","content":{"type":"text","text":" this"}}}}
+{"jsonrpc":"2.0","method":"session/update","params":{"sessionId":"{{sessionId}}","update":{"sessionUpdate":"agent_message_chunk","content":{"type":"text","text":" in"}}}}
+{"jsonrpc":"2.0","method":"session/update","params":{"sessionId":"{{sessionId}}","update":{"sessionUpdate":"agent_message_chunk","content":{"type":"text","text":" mind"}}}}
+{"jsonrpc":"2.0","method":"session/update","params":{"sessionId":"{{sessionId}}","update":{"sessionUpdate":"agent_message_chunk","content":{"type":"text","text":" if"}}}}
+{"jsonrpc":"2.0","method":"session/update","params":{"sessionId":"{{sessionId}}","update":{"sessionUpdate":"agent_message_chunk","content":{"type":"text","text":" asked"}}}}
 {"jsonrpc":"2.0","method":"session/update","params":{"sessionId":"{{sessionId}}","update":{"sessionUpdate":"agent_message_chunk","content":{"type":"text","text":" to"}}}}
-{"jsonrpc":"2.0","method":"session/update","params":{"sessionId":"{{sessionId}}","update":{"sessionUpdate":"agent_message_chunk","content":{"type":"text","text":" present"}}}}
+{"jsonrpc":"2.0","method":"session/update","params":{"sessionId":"{{sessionId}}","update":{"sessionUpdate":"agent_message_chunk","content":{"type":"text","text":" revise"}}}}
+{"jsonrpc":"2.0","method":"session/update","params":{"sessionId":"{{sessionId}}","update":{"sessionUpdate":"agent_message_chunk","content":{"type":"text","text":","}}}}
+{"jsonrpc":"2.0","method":"session/update","params":{"sessionId":"{{sessionId}}","update":{"sessionUpdate":"agent_message_chunk","content":{"type":"text","text":" but"}}}}
+{"jsonrpc":"2.0","method":"session/update","params":{"sessionId":"{{sessionId}}","update":{"sessionUpdate":"agent_message_chunk","content":{"type":"text","text":" per"}}}}
+{"jsonrpc":"2.0","method":"session/update","params":{"sessionId":"{{sessionId}}","update":{"sessionUpdate":"agent_message_chunk","content":{"type":"text","text":" instructions"}}}}
 {"jsonrpc":"2.0","method":"session/update","params":{"sessionId":"{{sessionId}}","update":{"sessionUpdate":"agent_message_chunk","content":{"type":"text","text":" the"}}}}
 {"jsonrpc":"2.0","method":"session/update","params":{"sessionId":"{{sessionId}}","update":{"sessionUpdate":"agent_message_chunk","content":{"type":"text","text":" plan"}}}}
+{"jsonrpc":"2.0","method":"session/update","params":{"sessionId":"{{sessionId}}","update":{"sessionUpdate":"agent_message_chunk","content":{"type":"text","text":" will"}}}}
+{"jsonrpc":"2.0","method":"session/update","params":{"sessionId":"{{sessionId}}","update":{"sessionUpdate":"agent_message_chunk","content":{"type":"text","text":" not"}}}}
+{"jsonrpc":"2.0","method":"session/update","params":{"sessionId":"{{sessionId}}","update":{"sessionUpdate":"agent_message_chunk","content":{"type":"text","text":" be"}}}}
+{"jsonrpc":"2.0","method":"session/update","params":{"sessionId":"{{sessionId}}","update":{"sessionUpdate":"agent_message_chunk","content":{"type":"text","text":" presented"}}}}
 {"jsonrpc":"2.0","method":"session/update","params":{"sessionId":"{{sessionId}}","update":{"sessionUpdate":"agent_message_chunk","content":{"type":"text","text":" again"}}}}
-{"jsonrpc":"2.0","method":"session/update","params":{"sessionId":"{{sessionId}}","update":{"sessionUpdate":"agent_message_chunk","content":{"type":"text","text":","}}}}
-{"jsonrpc":"2.0","method":"session/update","params":{"sessionId":"{{sessionId}}","update":{"sessionUpdate":"agent_message_chunk","content":{"type":"text","text":" I"}}}}
-{"jsonrpc":"2.0","method":"session/update","params":{"sessionId":"{{sessionId}}","update":{"sessionUpdate":"agent_message_chunk","content":{"type":"text","text":"'ll"}}}}
-{"jsonrpc":"2.0","method":"session/update","params":{"sessionId":"{{sessionId}}","update":{"sessionUpdate":"agent_message_chunk","content":{"type":"text","text":" stop"}}}}
-{"jsonrpc":"2.0","method":"session/update","params":{"sessionId":"{{sessionId}}","update":{"sessionUpdate":"agent_message_chunk","content":{"type":"text","text":" here"}}}}
+{"jsonrpc":"2.0","method":"session/update","params":{"sessionId":"{{sessionId}}","update":{"sessionUpdate":"agent_message_chunk","content":{"type":"text","text":" in"}}}}
+{"jsonrpc":"2.0","method":"session/update","params":{"sessionId":"{{sessionId}}","update":{"sessionUpdate":"agent_message_chunk","content":{"type":"text","text":" this"}}}}
+{"jsonrpc":"2.0","method":"session/update","params":{"sessionId":"{{sessionId}}","update":{"sessionUpdate":"agent_message_chunk","content":{"type":"text","text":" session"}}}}
 {"jsonrpc":"2.0","method":"session/update","params":{"sessionId":"{{sessionId}}","update":{"sessionUpdate":"agent_message_chunk","content":{"type":"text","text":"."}}}}
 {"jsonrpc":"2.0","id":4,"result":{"stopReason":"end_turn"}}

examples/plan-acp-agent/tests/snapshots/plan-mode/input.json

@@ -12,7 +12,7 @@
     },
     {
       "op": "prompt",
-      "text": "The typo is on line 2 of notes.txt itself; the workspace contains no other file. Inspect it with the bash tool: run exactly `cat notes.txt` (relative path, no other command; plan mode keeps the sandbox read-only, and a plain cat succeeds). Then present a one-step plan titled '# Fix the greeting typo' via exit_plan_mode: the single step is editing line 2 of notes.txt to say hello world. After the review approves, apply exactly that one edit to notes.txt with the edit tool and stop — no other commands, do not look for any other file."
+      "text": "The typo is on line 2 of notes.txt itself; the workspace contains no other file. Inspect it with the bash tool: run exactly `cat notes.txt` (relative path, no other command; plan mode keeps the sandbox read-only, and a plain cat succeeds). Then present a one-step plan titled '# Fix the greeting typo' via exit_plan_mode: the single step is editing line 2 of notes.txt to say hello world. Do not edit anything before the review approves. After it approves, apply exactly that one edit to notes.txt with the edit tool and stop — no other commands, do not look for any other file."
     },
     {
       "op": "prompt",

examples/plan-acp-agent/tests/snapshots/plan-mode/stdout.golden.jsonl

@@ -10,26 +10,31 @@
 {"jsonrpc":"2.0","method":"session/update","params":{"sessionId":"{{sessionId}}","update":{"sessionUpdate":"agent_thought_chunk","content":{"type":"text","text":":\n"}}}}
 {"jsonrpc":"2.0","method":"session/update","params":{"sessionId":"{{sessionId}}","update":{"sessionUpdate":"agent_thought_chunk","content":{"type":"text","text":"1"}}}}
 {"jsonrpc":"2.0","method":"session/update","params":{"sessionId":"{{sessionId}}","update":{"sessionUpdate":"agent_thought_chunk","content":{"type":"text","text":"."}}}}
-{"jsonrpc":"2.0","method":"session/update","params":{"sessionId":"{{sessionId}}","update":{"sessionUpdate":"agent_thought_chunk","content":{"type":"text","text":" Read"}}}}
-{"jsonrpc":"2.0","method":"session/update","params":{"sessionId":"{{sessionId}}","update":{"sessionUpdate":"agent_thought_chunk","content":{"type":"text","text":" notes"}}}}
-{"jsonrpc":"2.0","method":"session/update","params":{"sessionId":"{{sessionId}}","update":{"sessionUpdate":"agent_thought_chunk","content":{"type":"text","text":".txt"}}}}
-{"jsonrpc":"2.0","method":"session/update","params":{"sessionId":"{{sessionId}}","update":{"sessionUpdate":"agent_thought_chunk","content":{"type":"text","text":" using"}}}}
+{"jsonrpc":"2.0","method":"session/update","params":{"sessionId":"{{sessionId}}","update":{"sessionUpdate":"agent_thought_chunk","content":{"type":"text","text":" Run"}}}}
 {"jsonrpc":"2.0","method":"session/update","params":{"sessionId":"{{sessionId}}","update":{"sessionUpdate":"agent_thought_chunk","content":{"type":"text","text":" `"}}}}
 {"jsonrpc":"2.0","method":"session/update","params":{"sessionId":"{{sessionId}}","update":{"sessionUpdate":"agent_thought_chunk","content":{"type":"text","text":"cat"}}}}
 {"jsonrpc":"2.0","method":"session/update","params":{"sessionId":"{{sessionId}}","update":{"sessionUpdate":"agent_thought_chunk","content":{"type":"text","text":" notes"}}}}
 {"jsonrpc":"2.0","method":"session/update","params":{"sessionId":"{{sessionId}}","update":{"sessionUpdate":"agent_thought_chunk","content":{"type":"text","text":".txt"}}}}
-{"jsonrpc":"2.0","method":"session/update","params":{"sessionId":"{{sessionId}}","update":{"sessionUpdate":"agent_thought_chunk","content":{"type":"text","text":"`\n"}}}}
+{"jsonrpc":"2.0","method":"session/update","params":{"sessionId":"{{sessionId}}","update":{"sessionUpdate":"agent_thought_chunk","content":{"type":"text","text":"`"}}}}
+{"jsonrpc":"2.0","method":"session/update","params":{"sessionId":"{{sessionId}}","update":{"sessionUpdate":"agent_thought_chunk","content":{"type":"text","text":" to"}}}}
+{"jsonrpc":"2.0","method":"session/update","params":{"sessionId":"{{sessionId}}","update":{"sessionUpdate":"agent_thought_chunk","content":{"type":"text","text":" inspect"}}}}
+{"jsonrpc":"2.0","method":"session/update","params":{"sessionId":"{{sessionId}}","update":{"sessionUpdate":"agent_thought_chunk","content":{"type":"text","text":" the"}}}}
+{"jsonrpc":"2.0","method":"session/update","params":{"sessionId":"{{sessionId}}","update":{"sessionUpdate":"agent_thought_chunk","content":{"type":"text","text":" file"}}}}
+{"jsonrpc":"2.0","method":"session/update","params":{"sessionId":"{{sessionId}}","update":{"sessionUpdate":"agent_thought_chunk","content":{"type":"text","text":"\n"}}}}
 {"jsonrpc":"2.0","method":"session/update","params":{"sessionId":"{{sessionId}}","update":{"sessionUpdate":"agent_thought_chunk","content":{"type":"text","text":"2"}}}}
 {"jsonrpc":"2.0","method":"session/update","params":{"sessionId":"{{sessionId}}","update":{"sessionUpdate":"agent_thought_chunk","content":{"type":"text","text":"."}}}}
 {"jsonrpc":"2.0","method":"session/update","params":{"sessionId":"{{sessionId}}","update":{"sessionUpdate":"agent_thought_chunk","content":{"type":"text","text":" Present"}}}}
 {"jsonrpc":"2.0","method":"session/update","params":{"sessionId":"{{sessionId}}","update":{"sessionUpdate":"agent_thought_chunk","content":{"type":"text","text":" a"}}}}
 {"jsonrpc":"2.0","method":"session/update","params":{"sessionId":"{{sessionId}}","update":{"sessionUpdate":"agent_thought_chunk","content":{"type":"text","text":" plan"}}}}
-{"jsonrpc":"2.0","method":"session/update","params":{"sessionId":"{{sessionId}}","update":{"sessionUpdate":"agent_thought_chunk","content":{"type":"text","text":" via"}}}}
-{"jsonrpc":"2.0","method":"session/update","params":{"sessionId":"{{sessionId}}","update":{"sessionUpdate":"agent_thought_chunk","content":{"type":"text","text":" exit"}}}}
-{"jsonrpc":"2.0","method":"session/update","params":{"sessionId":"{{sessionId}}","update":{"sessionUpdate":"agent_thought_chunk","content":{"type":"text","text":"_"}}}}
-{"jsonrpc":"2.0","method":"session/update","params":{"sessionId":"{{sessionId}}","update":{"sessionUpdate":"agent_thought_chunk","content":{"type":"text","text":"plan"}}}}
-{"jsonrpc":"2.0","method":"session/update","params":{"sessionId":"{{sessionId}}","update":{"sessionUpdate":"agent_thought_chunk","content":{"type":"text","text":"_mode"}}}}
-{"jsonrpc":"2.0","method":"session/update","params":{"sessionId":"{{sessionId}}","update":{"sessionUpdate":"agent_thought_chunk","content":{"type":"text","text":"\n"}}}}
+{"jsonrpc":"2.0","method":"session/update","params":{"sessionId":"{{sessionId}}","update":{"sessionUpdate":"agent_thought_chunk","content":{"type":"text","text":" titled"}}}}
+{"jsonrpc":"2.0","method":"session/update","params":{"sessionId":"{{sessionId}}","update":{"sessionUpdate":"agent_thought_chunk","content":{"type":"text","text":" '#"}}}}
+{"jsonrpc":"2.0","method":"session/update","params":{"sessionId":"{{sessionId}}","update":{"sessionUpdate":"agent_thought_chunk","content":{"type":"text","text":" Fix"}}}}
+{"jsonrpc":"2.0","method":"session/update","params":{"sessionId":"{{sessionId}}","update":{"sessionUpdate":"agent_thought_chunk","content":{"type":"text","text":" the"}}}}
+{"jsonrpc":"2.0","method":"session/update","params":{"sessionId":"{{sessionId}}","update":{"sessionUpdate":"agent_thought_chunk","content":{"type":"text","text":" greeting"}}}}
+{"jsonrpc":"2.0","method":"session/update","params":{"sessionId":"{{sessionId}}","update":{"sessionUpdate":"agent_thought_chunk","content":{"type":"text","text":" typ"}}}}
+{"jsonrpc":"2.0","method":"session/update","params":{"sessionId":"{{sessionId}}","update":{"sessionUpdate":"agent_thought_chunk","content":{"type":"text","text":"o"}}}}
+{"jsonrpc":"2.0","method":"session/update","params":{"sessionId":"{{sessionId}}","update":{"sessionUpdate":"agent_thought_chunk","content":{"type":"text","text":"'"}}}}
+{"jsonrpc":"2.0","method":"session/update","params":{"sessionId":"{{sessionId}}","update":{"sessionUpdate":"agent_thought_chunk","content":{"type":"text","text":" \n"}}}}
 {"jsonrpc":"2.0","method":"session/update","params":{"sessionId":"{{sessionId}}","update":{"sessionUpdate":"agent_thought_chunk","content":{"type":"text","text":"3"}}}}
 {"jsonrpc":"2.0","method":"session/update","params":{"sessionId":"{{sessionId}}","update":{"sessionUpdate":"agent_thought_chunk","content":{"type":"text","text":"."}}}}
 {"jsonrpc":"2.0","method":"session/update","params":{"sessionId":"{{sessionId}}","update":{"sessionUpdate":"agent_thought_chunk","content":{"type":"text","text":" After"}}}}
@@ -39,9 +44,6 @@
 {"jsonrpc":"2.0","method":"session/update","params":{"sessionId":"{{sessionId}}","update":{"sessionUpdate":"agent_thought_chunk","content":{"type":"text","text":" line"}}}}
 {"jsonrpc":"2.0","method":"session/update","params":{"sessionId":"{{sessionId}}","update":{"sessionUpdate":"agent_thought_chunk","content":{"type":"text","text":" "}}}}
 {"jsonrpc":"2.0","method":"session/update","params":{"sessionId":"{{sessionId}}","update":{"sessionUpdate":"agent_thought_chunk","content":{"type":"text","text":"2"}}}}
-{"jsonrpc":"2.0","method":"session/update","params":{"sessionId":"{{sessionId}}","update":{"sessionUpdate":"agent_thought_chunk","content":{"type":"text","text":" of"}}}}
-{"jsonrpc":"2.0","method":"session/update","params":{"sessionId":"{{sessionId}}","update":{"sessionUpdate":"agent_thought_chunk","content":{"type":"text","text":" notes"}}}}
-{"jsonrpc":"2.0","method":"session/update","params":{"sessionId":"{{sessionId}}","update":{"sessionUpdate":"agent_thought_chunk","content":{"type":"text","text":".txt"}}}}
 {"jsonrpc":"2.0","method":"session/update","params":{"sessionId":"{{sessionId}}","update":{"sessionUpdate":"agent_thought_chunk","content":{"type":"text","text":" to"}}}}
 {"jsonrpc":"2.0","method":"session/update","params":{"sessionId":"{{sessionId}}","update":{"sessionUpdate":"agent_thought_chunk","content":{"type":"text","text":" say"}}}}
 {"jsonrpc":"2.0","method":"session/update","params":{"sessionId":"{{sessionId}}","update":{"sessionUpdate":"agent_thought_chunk","content":{"type":"text","text":" \""}}}}
@@ -51,22 +53,36 @@
 {"jsonrpc":"2.0","method":"session/update","params":{"sessionId":"{{sessionId}}","update":{"sessionUpdate":"agent_thought_chunk","content":{"type":"text","text":"Let"}}}}
 {"jsonrpc":"2.0","method":"session/update","params":{"sessionId":"{{sessionId}}","update":{"sessionUpdate":"agent_thought_chunk","content":{"type":"text","text":" me"}}}}
 {"jsonrpc":"2.0","method":"session/update","params":{"sessionId":"{{sessionId}}","update":{"sessionUpdate":"agent_thought_chunk","content":{"type":"text","text":" start"}}}}
-{"jsonrpc":"2.0","method":"session/update","params":{"sessionId":"{{sessionId}}","update":{"sessionUpdate":"agent_thought_chunk","content":{"type":"text","text":" by"}}}}
-{"jsonrpc":"2.0","method":"session/update","params":{"sessionId":"{{sessionId}}","update":{"sessionUpdate":"agent_thought_chunk","content":{"type":"text","text":" reading"}}}}
+{"jsonrpc":"2.0","method":"session/update","params":{"sessionId":"{{sessionId}}","update":{"sessionUpdate":"agent_thought_chunk","content":{"type":"text","text":" with"}}}}
 {"jsonrpc":"2.0","method":"session/update","params":{"sessionId":"{{sessionId}}","update":{"sessionUpdate":"agent_thought_chunk","content":{"type":"text","text":" the"}}}}
-{"jsonrpc":"2.0","method":"session/update","params":{"sessionId":"{{sessionId}}","update":{"sessionUpdate":"agent_thought_chunk","content":{"type":"text","text":" file"}}}}
+{"jsonrpc":"2.0","method":"session/update","params":{"sessionId":"{{sessionId}}","update":{"sessionUpdate":"agent_thought_chunk","content":{"type":"text","text":" cat"}}}}
+{"jsonrpc":"2.0","method":"session/update","params":{"sessionId":"{{sessionId}}","update":{"sessionUpdate":"agent_thought_chunk","content":{"type":"text","text":" command"}}}}
 {"jsonrpc":"2.0","method":"session/update","params":{"sessionId":"{{sessionId}}","update":{"sessionUpdate":"agent_thought_chunk","content":{"type":"text","text":"."}}}}
-{"jsonrpc":"2.0","method":"session/update","params":{"sessionId":"{{sessionId}}","update":{"sessionUpdate":"tool_call","toolCallId":"call_00_Tyo8K7zyt1VuPCM95ddM4274","title":"cat notes.txt","kind":"execute","status":"in_progress","rawInput":"cat notes.txt","content":[{"type":"content","content":{"type":"text","text":"Read notes.txt to find the typo"}}]}}}
-{"jsonrpc":"2.0","method":"session/update","params":{"sessionId":"{{sessionId}}","update":{"sessionUpdate":"tool_call_update","toolCallId":"call_00_Tyo8K7zyt1VuPCM95ddM4274","status":"completed","content":[{"type":"content","content":{"type":"text","text":"```console\nproject notes\n- the greeting message still says \"helo wrld\"\n```"}}]}}}
-{"jsonrpc":"2.0","method":"session/update","params":{"sessionId":"{{sessionId}}","update":{"sessionUpdate":"agent_thought_chunk","content":{"type":"text","text":"Line"}}}}
+{"jsonrpc":"2.0","method":"session/update","params":{"sessionId":"{{sessionId}}","update":{"sessionUpdate":"tool_call","toolCallId":"call_00_pNGj3ju6EXU1ScBbbmz55367","title":"cat notes.txt","kind":"execute","status":"in_progress","rawInput":"cat notes.txt","content":[{"type":"content","content":{"type":"text","text":"Inspect notes.txt file"}}]}}}
+{"jsonrpc":"2.0","method":"session/update","params":{"sessionId":"{{sessionId}}","update":{"sessionUpdate":"tool_call_update","toolCallId":"call_00_pNGj3ju6EXU1ScBbbmz55367","status":"completed","content":[{"type":"content","content":{"type":"text","text":"```console\nproject notes\n- the greeting message still says \"helo wrld\"\n```"}}]}}}
+{"jsonrpc":"2.0","method":"session/update","params":{"sessionId":"{{sessionId}}","update":{"sessionUpdate":"agent_thought_chunk","content":{"type":"text","text":"Good"}}}}
+{"jsonrpc":"2.0","method":"session/update","params":{"sessionId":"{{sessionId}}","update":{"sessionUpdate":"agent_thought_chunk","content":{"type":"text","text":"."}}}}
+{"jsonrpc":"2.0","method":"session/update","params":{"sessionId":"{{sessionId}}","update":{"sessionUpdate":"agent_thought_chunk","content":{"type":"text","text":" The"}}}}
+{"jsonrpc":"2.0","method":"session/update","params":{"sessionId":"{{sessionId}}","update":{"sessionUpdate":"agent_thought_chunk","content":{"type":"text","text":" file"}}}}
+{"jsonrpc":"2.0","method":"session/update","params":{"sessionId":"{{sessionId}}","update":{"sessionUpdate":"agent_thought_chunk","content":{"type":"text","text":" has"}}}}
+{"jsonrpc":"2.0","method":"session/update","params":{"sessionId":"{{sessionId}}","update":{"sessionUpdate":"agent_thought_chunk","content":{"type":"text","text":" two"}}}}
+{"jsonrpc":"2.0","method":"session/update","params":{"sessionId":"{{sessionId}}","update":{"sessionUpdate":"agent_thought_chunk","content":{"type":"text","text":" lines"}}}}
+{"jsonrpc":"2.0","method":"session/update","params":{"sessionId":"{{sessionId}}","update":{"sessionUpdate":"agent_thought_chunk","content":{"type":"text","text":":\n"}}}}
+{"jsonrpc":"2.0","method":"session/update","params":{"sessionId":"{{sessionId}}","update":{"sessionUpdate":"agent_thought_chunk","content":{"type":"text","text":"-"}}}}
+{"jsonrpc":"2.0","method":"session/update","params":{"sessionId":"{{sessionId}}","update":{"sessionUpdate":"agent_thought_chunk","content":{"type":"text","text":" Line"}}}}
 {"jsonrpc":"2.0","method":"session/update","params":{"sessionId":"{{sessionId}}","update":{"sessionUpdate":"agent_thought_chunk","content":{"type":"text","text":" "}}}}
-{"jsonrpc":"2.0","method":"session/update","params":{"sessionId":"{{sessionId}}","update":{"sessionUpdate":"agent_thought_chunk","content":{"type":"text","text":"2"}}}}
-{"jsonrpc":"2.0","method":"session/update","params":{"sessionId":"{{sessionId}}","update":{"sessionUpdate":"agent_thought_chunk","content":{"type":"text","text":" of"}}}}
+{"jsonrpc":"2.0","method":"session/update","params":{"sessionId":"{{sessionId}}","update":{"sessionUpdate":"agent_thought_chunk","content":{"type":"text","text":"1"}}}}
+{"jsonrpc":"2.0","method":"session/update","params":{"sessionId":"{{sessionId}}","update":{"sessionUpdate":"agent_thought_chunk","content":{"type":"text","text":":"}}}}
+{"jsonrpc":"2.0","method":"session/update","params":{"sessionId":"{{sessionId}}","update":{"sessionUpdate":"agent_thought_chunk","content":{"type":"text","text":" \""}}}}
+{"jsonrpc":"2.0","method":"session/update","params":{"sessionId":"{{sessionId}}","update":{"sessionUpdate":"agent_thought_chunk","content":{"type":"text","text":"project"}}}}
 {"jsonrpc":"2.0","method":"session/update","params":{"sessionId":"{{sessionId}}","update":{"sessionUpdate":"agent_thought_chunk","content":{"type":"text","text":" notes"}}}}
-{"jsonrpc":"2.0","method":"session/update","params":{"sessionId":"{{sessionId}}","update":{"sessionUpdate":"agent_thought_chunk","content":{"type":"text","text":".txt"}}}}
-{"jsonrpc":"2.0","method":"session/update","params":{"sessionId":"{{sessionId}}","update":{"sessionUpdate":"agent_thought_chunk","content":{"type":"text","text":" says"}}}}
-{"jsonrpc":"2.0","method":"session/update","params":{"sessionId":"{{sessionId}}","update":{"sessionUpdate":"agent_thought_chunk","content":{"type":"text","text":" `"}}}}
+{"jsonrpc":"2.0","method":"session/update","params":{"sessionId":"{{sessionId}}","update":{"sessionUpdate":"agent_thought_chunk","content":{"type":"text","text":"\"\n"}}}}
 {"jsonrpc":"2.0","method":"session/update","params":{"sessionId":"{{sessionId}}","update":{"sessionUpdate":"agent_thought_chunk","content":{"type":"text","text":"-"}}}}
+{"jsonrpc":"2.0","method":"session/update","params":{"sessionId":"{{sessionId}}","update":{"sessionUpdate":"agent_thought_chunk","content":{"type":"text","text":" Line"}}}}
+{"jsonrpc":"2.0","method":"session/update","params":{"sessionId":"{{sessionId}}","update":{"sessionUpdate":"agent_thought_chunk","content":{"type":"text","text":" "}}}}
+{"jsonrpc":"2.0","method":"session/update","params":{"sessionId":"{{sessionId}}","update":{"sessionUpdate":"agent_thought_chunk","content":{"type":"text","text":"2"}}}}
+{"jsonrpc":"2.0","method":"session/update","params":{"sessionId":"{{sessionId}}","update":{"sessionUpdate":"agent_thought_chunk","content":{"type":"text","text":":"}}}}
+{"jsonrpc":"2.0","method":"session/update","params":{"sessionId":"{{sessionId}}","update":{"sessionUpdate":"agent_thought_chunk","content":{"type":"text","text":" \"-"}}}}
 {"jsonrpc":"2.0","method":"session/update","params":{"sessionId":"{{sessionId}}","update":{"sessionUpdate":"agent_thought_chunk","content":{"type":"text","text":" the"}}}}
 {"jsonrpc":"2.0","method":"session/update","params":{"sessionId":"{{sessionId}}","update":{"sessionUpdate":"agent_thought_chunk","content":{"type":"text","text":" greeting"}}}}
 {"jsonrpc":"2.0","method":"session/update","params":{"sessionId":"{{sessionId}}","update":{"sessionUpdate":"agent_thought_chunk","content":{"type":"text","text":" message"}}}}
@@ -78,22 +94,20 @@
 {"jsonrpc":"2.0","method":"session/update","params":{"sessionId":"{{sessionId}}","update":{"sessionUpdate":"agent_thought_chunk","content":{"type":"text","text":" wr"}}}}
 {"jsonrpc":"2.0","method":"session/update","params":{"sessionId":"{{sessionId}}","update":{"sessionUpdate":"agent_thought_chunk","content":{"type":"text","text":"ld"}}}}
 {"jsonrpc":"2.0","method":"session/update","params":{"sessionId":"{{sessionId}}","update":{"sessionUpdate":"agent_thought_chunk","content":{"type":"text","text":"\""}}}}
-{"jsonrpc":"2.0","method":"session/update","params":{"sessionId":"{{sessionId}}","update":{"sessionUpdate":"agent_thought_chunk","content":{"type":"text","text":"`."}}}}
-{"jsonrpc":"2.0","method":"session/update","params":{"sessionId":"{{sessionId}}","update":{"sessionUpdate":"agent_thought_chunk","content":{"type":"text","text":" The"}}}}
+{"jsonrpc":"2.0","method":"session/update","params":{"sessionId":"{{sessionId}}","update":{"sessionUpdate":"agent_thought_chunk","content":{"type":"text","text":"\"\n\n"}}}}
+{"jsonrpc":"2.0","method":"session/update","params":{"sessionId":"{{sessionId}}","update":{"sessionUpdate":"agent_thought_chunk","content":{"type":"text","text":"The"}}}}
 {"jsonrpc":"2.0","method":"session/update","params":{"sessionId":"{{sessionId}}","update":{"sessionUpdate":"agent_thought_chunk","content":{"type":"text","text":" user"}}}}
 {"jsonrpc":"2.0","method":"session/update","params":{"sessionId":"{{sessionId}}","update":{"sessionUpdate":"agent_thought_chunk","content":{"type":"text","text":" wants"}}}}
 {"jsonrpc":"2.0","method":"session/update","params":{"sessionId":"{{sessionId}}","update":{"sessionUpdate":"agent_thought_chunk","content":{"type":"text","text":" me"}}}}
 {"jsonrpc":"2.0","method":"session/update","params":{"sessionId":"{{sessionId}}","update":{"sessionUpdate":"agent_thought_chunk","content":{"type":"text","text":" to"}}}}
-{"jsonrpc":"2.0","method":"session/update","params":{"sessionId":"{{sessionId}}","update":{"sessionUpdate":"agent_thought_chunk","content":{"type":"text","text":" present"}}}}
-{"jsonrpc":"2.0","method":"session/update","params":{"sessionId":"{{sessionId}}","update":{"sessionUpdate":"agent_thought_chunk","content":{"type":"text","text":" a"}}}}
-{"jsonrpc":"2.0","method":"session/update","params":{"sessionId":"{{sessionId}}","update":{"sessionUpdate":"agent_thought_chunk","content":{"type":"text","text":" plan"}}}}
-{"jsonrpc":"2.0","method":"session/update","params":{"sessionId":"{{sessionId}}","update":{"sessionUpdate":"agent_thought_chunk","content":{"type":"text","text":" to"}}}}
 {"jsonrpc":"2.0","method":"session/update","params":{"sessionId":"{{sessionId}}","update":{"sessionUpdate":"agent_thought_chunk","content":{"type":"text","text":" fix"}}}}
 {"jsonrpc":"2.0","method":"session/update","params":{"sessionId":"{{sessionId}}","update":{"sessionUpdate":"agent_thought_chunk","content":{"type":"text","text":" the"}}}}
 {"jsonrpc":"2.0","method":"session/update","params":{"sessionId":"{{sessionId}}","update":{"sessionUpdate":"agent_thought_chunk","content":{"type":"text","text":" typ"}}}}
 {"jsonrpc":"2.0","method":"session/update","params":{"sessionId":"{{sessionId}}","update":{"sessionUpdate":"agent_thought_chunk","content":{"type":"text","text":"o"}}}}
 {"jsonrpc":"2.0","method":"session/update","params":{"sessionId":"{{sessionId}}","update":{"sessionUpdate":"agent_thought_chunk","content":{"type":"text","text":" so"}}}}
-{"jsonrpc":"2.0","method":"session/update","params":{"sessionId":"{{sessionId}}","update":{"sessionUpdate":"agent_thought_chunk","content":{"type":"text","text":" it"}}}}
+{"jsonrpc":"2.0","method":"session/update","params":{"sessionId":"{{sessionId}}","update":{"sessionUpdate":"agent_thought_chunk","content":{"type":"text","text":" line"}}}}
+{"jsonrpc":"2.0","method":"session/update","params":{"sessionId":"{{sessionId}}","update":{"sessionUpdate":"agent_thought_chunk","content":{"type":"text","text":" "}}}}
+{"jsonrpc":"2.0","method":"session/update","params":{"sessionId":"{{sessionId}}","update":{"sessionUpdate":"agent_thought_chunk","content":{"type":"text","text":"2"}}}}
 {"jsonrpc":"2.0","method":"session/update","params":{"sessionId":"{{sessionId}}","update":{"sessionUpdate":"agent_thought_chunk","content":{"type":"text","text":" says"}}}}
 {"jsonrpc":"2.0","method":"session/update","params":{"sessionId":"{{sessionId}}","update":{"sessionUpdate":"agent_thought_chunk","content":{"type":"text","text":" \""}}}}
 {"jsonrpc":"2.0","method":"session/update","params":{"sessionId":"{{sessionId}}","update":{"sessionUpdate":"agent_thought_chunk","content":{"type":"text","text":"hello"}}}}
@@ -104,15 +118,14 @@
 {"jsonrpc":"2.0","method":"session/update","params":{"sessionId":"{{sessionId}}","update":{"sessionUpdate":"agent_thought_chunk","content":{"type":"text","text":" present"}}}}
 {"jsonrpc":"2.0","method":"session/update","params":{"sessionId":"{{sessionId}}","update":{"sessionUpdate":"agent_thought_chunk","content":{"type":"text","text":" the"}}}}
 {"jsonrpc":"2.0","method":"session/update","params":{"sessionId":"{{sessionId}}","update":{"sessionUpdate":"agent_thought_chunk","content":{"type":"text","text":" plan"}}}}
+{"jsonrpc":"2.0","method":"session/update","params":{"sessionId":"{{sessionId}}","update":{"sessionUpdate":"agent_thought_chunk","content":{"type":"text","text":" now"}}}}
 {"jsonrpc":"2.0","method":"session/update","params":{"sessionId":"{{sessionId}}","update":{"sessionUpdate":"agent_thought_chunk","content":{"type":"text","text":"."}}}}
-{"jsonrpc":"2.0","method":"session/update","params":{"sessionId":"{{sessionId}}","update":{"sessionUpdate":"agent_message_chunk","content":{"type":"text","text":"Line"}}}}
+{"jsonrpc":"2.0","method":"session/update","params":{"sessionId":"{{sessionId}}","update":{"sessionUpdate":"agent_message_chunk","content":{"type":"text","text":"Confirmed"}}}}
+{"jsonrpc":"2.0","method":"session/update","params":{"sessionId":"{{sessionId}}","update":{"sessionUpdate":"agent_message_chunk","content":{"type":"text","text":":"}}}}
+{"jsonrpc":"2.0","method":"session/update","params":{"sessionId":"{{sessionId}}","update":{"sessionUpdate":"agent_message_chunk","content":{"type":"text","text":" line"}}}}
 {"jsonrpc":"2.0","method":"session/update","params":{"sessionId":"{{sessionId}}","update":{"sessionUpdate":"agent_message_chunk","content":{"type":"text","text":" "}}}}
 {"jsonrpc":"2.0","method":"session/update","params":{"sessionId":"{{sessionId}}","update":{"sessionUpdate":"agent_message_chunk","content":{"type":"text","text":"2"}}}}
-{"jsonrpc":"2.0","method":"session/update","params":{"sessionId":"{{sessionId}}","update":{"sessionUpdate":"agent_message_chunk","content":{"type":"text","text":" of"}}}}
-{"jsonrpc":"2.0","method":"session/update","params":{"sessionId":"{{sessionId}}","update":{"sessionUpdate":"agent_message_chunk","content":{"type":"text","text":" notes"}}}}
-{"jsonrpc":"2.0","method":"session/update","params":{"sessionId":"{{sessionId}}","update":{"sessionUpdate":"agent_message_chunk","content":{"type":"text","text":".txt"}}}}
-{"jsonrpc":"2.0","method":"session/update","params":{"sessionId":"{{sessionId}}","update":{"sessionUpdate":"agent_message_chunk","content":{"type":"text","text":" reads"}}}}
-{"jsonrpc":"2.0","method":"session/update","params":{"sessionId":"{{sessionId}}","update":{"sessionUpdate":"agent_message_chunk","content":{"type":"text","text":":"}}}}
+{"jsonrpc":"2.0","method":"session/update","params":{"sessionId":"{{sessionId}}","update":{"sessionUpdate":"agent_message_chunk","content":{"type":"text","text":" says"}}}}
 {"jsonrpc":"2.0","method":"session/update","params":{"sessionId":"{{sessionId}}","update":{"sessionUpdate":"agent_message_chunk","content":{"type":"text","text":" `"}}}}
 {"jsonrpc":"2.0","method":"session/update","params":{"sessionId":"{{sessionId}}","update":{"sessionUpdate":"agent_message_chunk","content":{"type":"text","text":"-"}}}}
 {"jsonrpc":"2.0","method":"session/update","params":{"sessionId":"{{sessionId}}","update":{"sessionUpdate":"agent_message_chunk","content":{"type":"text","text":" the"}}}}
@@ -126,17 +139,19 @@
 {"jsonrpc":"2.0","method":"session/update","params":{"sessionId":"{{sessionId}}","update":{"sessionUpdate":"agent_message_chunk","content":{"type":"text","text":" wr"}}}}
 {"jsonrpc":"2.0","method":"session/update","params":{"sessionId":"{{sessionId}}","update":{"sessionUpdate":"agent_message_chunk","content":{"type":"text","text":"ld"}}}}
 {"jsonrpc":"2.0","method":"session/update","params":{"sessionId":"{{sessionId}}","update":{"sessionUpdate":"agent_message_chunk","content":{"type":"text","text":"\""}}}}
-{"jsonrpc":"2.0","method":"session/update","params":{"sessionId":"{{sessionId}}","update":{"sessionUpdate":"agent_message_chunk","content":{"type":"text","text":"`."}}}}
-{"jsonrpc":"2.0","method":"session/update","params":{"sessionId":"{{sessionId}}","update":{"sessionUpdate":"agent_message_chunk","content":{"type":"text","text":" Now"}}}}
+{"jsonrpc":"2.0","method":"session/update","params":{"sessionId":"{{sessionId}}","update":{"sessionUpdate":"agent_message_chunk","content":{"type":"text","text":"`.\n\n"}}}}
+{"jsonrpc":"2.0","method":"session/update","params":{"sessionId":"{{sessionId}}","update":{"sessionUpdate":"agent_message_chunk","content":{"type":"text","text":"Now"}}}}
 {"jsonrpc":"2.0","method":"session/update","params":{"sessionId":"{{sessionId}}","update":{"sessionUpdate":"agent_message_chunk","content":{"type":"text","text":" presenting"}}}}
 {"jsonrpc":"2.0","method":"session/update","params":{"sessionId":"{{sessionId}}","update":{"sessionUpdate":"agent_message_chunk","content":{"type":"text","text":" the"}}}}
-{"jsonrpc":"2.0","method":"session/update","params":{"sessionId":"{{sessionId}}","update":{"sessionUpdate":"agent_message_chunk","content":{"type":"text","text":" plan"}}}}
-{"jsonrpc":"2.0","method":"session/update","params":{"sessionId":"{{sessionId}}","update":{"sessionUpdate":"agent_message_chunk","content":{"type":"text","text":"."}}}}
-{"jsonrpc":"2.0","method":"session/update","params":{"sessionId":"{{sessionId}}","update":{"sessionUpdate":"tool_call","toolCallId":"call_00_6Sfr97OKAn3mJwwrUR0d5661","title":"Fix the greeting typo","kind":"other","status":"in_progress","content":[{"type":"content","content":{"type":"text","text":"# Fix the greeting typo\n\n**Step 1:** Edit line 2 of `notes.txt` — change the text to say `hello world` instead of `helo wrld`."}}]}}}
-{"jsonrpc":"2.0","id":1,"method":"elicitation/create","params":{"sessionId":"{{sessionId}}","mode":"form","message":"Approve this plan and leave plan mode?","requestedSchema":{"type":"object","title":"Plan review","properties":{"choice":{"type":"string","title":"Approve this plan and leave plan mode?","description":"Choose one option, or fill a custom answer below.","oneOf":[{"const":"Approve","title":"Approve: Leave plan mode; the full toolset returns on the next step."},{"const":"Keep planning","title":"Keep planning: Stay in plan mode; feedback goes back to the model."}]},"custom":{"type":"string","title":"Custom answer","description":"Optional free-form answer. Leave empty to use the selected option."}},"required":[]}}}
-{"jsonrpc":"2.0","method":"session/update","params":{"sessionId":"{{sessionId}}","update":{"sessionUpdate":"tool_call_update","toolCallId":"call_00_6Sfr97OKAn3mJwwrUR0d5661","status":"completed","content":[{"type":"content","content":{"type":"text","text":"Plan approved — plan mode exited; the full toolset returns on your next step."}}],"title":"Plan review"}}}
+{"jsonrpc":"2.0","method":"session/update","params":{"sessionId":"{{sessionId}}","update":{"sessionUpdate":"agent_message_chunk","content":{"type":"text","text":" planned"}}}}
+{"jsonrpc":"2.0","method":"session/update","params":{"sessionId":"{{sessionId}}","update":{"sessionUpdate":"agent_message_chunk","content":{"type":"text","text":" step"}}}}
+{"jsonrpc":"2.0","method":"session/update","params":{"sessionId":"{{sessionId}}","update":{"sessionUpdate":"agent_message_chunk","content":{"type":"text","text":":"}}}}
+{"jsonrpc":"2.0","method":"session/update","params":{"sessionId":"{{sessionId}}","update":{"sessionUpdate":"tool_call","toolCallId":"call_00_jzVbT6dgeiQcNZt7gmMB0732","title":"Fix the greeting typo","kind":"other","status":"in_progress","content":[{"type":"content","content":{"type":"text","text":"# Fix the greeting typo\n\n**Single step:**\n\n1. Edit `notes.txt` to replace line 2 with `- the greeting message still says \"hello world\"` using the edit tool."}}]}}}
+{"jsonrpc":"2.0","id":1,"method":"elicitation/create","params":{"sessionId":"{{sessionId}}","mode":"form","message":"Approve this plan and leave plan mode?","requestedSchema":{"type":"object","title":"Plan review","properties":{"choice":{"type":"string","title":"Approve this plan and leave plan mode?","description":"Choose one option, or fill a custom answer below.","oneOf":[{"const":"Approve","title":"Approve: Leave plan mode; the plan is carried out from the next step."},{"const":"Keep planning","title":"Keep planning: Stay in plan mode; feedback goes back to the model."}]},"custom":{"type":"string","title":"Custom answer","description":"Optional free-form answer. Leave empty to use the selected option."}},"required":[]}}}
+{"jsonrpc":"2.0","method":"session/update","params":{"sessionId":"{{sessionId}}","update":{"sessionUpdate":"tool_call_update","toolCallId":"call_00_jzVbT6dgeiQcNZt7gmMB0732","status":"completed","content":[{"type":"content","content":{"type":"text","text":"Plan approved — plan mode exited; carry out the plan starting with your next step."}}],"title":"Plan review"}}}
 {"jsonrpc":"2.0","method":"session/update","params":{"sessionId":"{{sessionId}}","update":{"sessionUpdate":"current_mode_update","currentModeId":"default"}}}
-{"jsonrpc":"2.0","method":"session/update","params":{"sessionId":"{{sessionId}}","update":{"sessionUpdate":"agent_thought_chunk","content":{"type":"text","text":"Plan"}}}}
+{"jsonrpc":"2.0","method":"session/update","params":{"sessionId":"{{sessionId}}","update":{"sessionUpdate":"agent_thought_chunk","content":{"type":"text","text":"The"}}}}
+{"jsonrpc":"2.0","method":"session/update","params":{"sessionId":"{{sessionId}}","update":{"sessionUpdate":"agent_thought_chunk","content":{"type":"text","text":" plan"}}}}
 {"jsonrpc":"2.0","method":"session/update","params":{"sessionId":"{{sessionId}}","update":{"sessionUpdate":"agent_thought_chunk","content":{"type":"text","text":" was"}}}}
 {"jsonrpc":"2.0","method":"session/update","params":{"sessionId":"{{sessionId}}","update":{"sessionUpdate":"agent_thought_chunk","content":{"type":"text","text":" approved"}}}}
 {"jsonrpc":"2.0","method":"session/update","params":{"sessionId":"{{sessionId}}","update":{"sessionUpdate":"agent_thought_chunk","content":{"type":"text","text":"."}}}}
@@ -148,70 +163,89 @@
 {"jsonrpc":"2.0","method":"session/update","params":{"sessionId":"{{sessionId}}","update":{"sessionUpdate":"agent_thought_chunk","content":{"type":"text","text":" the"}}}}
 {"jsonrpc":"2.0","method":"session/update","params":{"sessionId":"{{sessionId}}","update":{"sessionUpdate":"agent_thought_chunk","content":{"type":"text","text":" edit"}}}}
 {"jsonrpc":"2.0","method":"session/update","params":{"sessionId":"{{sessionId}}","update":{"sessionUpdate":"agent_thought_chunk","content":{"type":"text","text":"."}}}}
-{"jsonrpc":"2.0","method":"session/update","params":{"sessionId":"{{sessionId}}","update":{"sessionUpdate":"agent_thought_chunk","content":{"type":"text","text":" I"}}}}
-{"jsonrpc":"2.0","method":"session/update","params":{"sessionId":"{{sessionId}}","update":{"sessionUpdate":"agent_thought_chunk","content":{"type":"text","text":"'ll"}}}}
-{"jsonrpc":"2.0","method":"session/update","params":{"sessionId":"{{sessionId}}","update":{"sessionUpdate":"agent_thought_chunk","content":{"type":"text","text":" edit"}}}}
-{"jsonrpc":"2.0","method":"session/update","params":{"sessionId":"{{sessionId}}","update":{"sessionUpdate":"agent_thought_chunk","content":{"type":"text","text":" line"}}}}
+{"jsonrpc":"2.0","method":"session/update","params":{"sessionId":"{{sessionId}}","update":{"sessionUpdate":"agent_thought_chunk","content":{"type":"text","text":" Line"}}}}
 {"jsonrpc":"2.0","method":"session/update","params":{"sessionId":"{{sessionId}}","update":{"sessionUpdate":"agent_thought_chunk","content":{"type":"text","text":" "}}}}
 {"jsonrpc":"2.0","method":"session/update","params":{"sessionId":"{{sessionId}}","update":{"sessionUpdate":"agent_thought_chunk","content":{"type":"text","text":"2"}}}}
-{"jsonrpc":"2.0","method":"session/update","params":{"sessionId":"{{sessionId}}","update":{"sessionUpdate":"agent_thought_chunk","content":{"type":"text","text":" of"}}}}
-{"jsonrpc":"2.0","method":"session/update","params":{"sessionId":"{{sessionId}}","update":{"sessionUpdate":"agent_thought_chunk","content":{"type":"text","text":" notes"}}}}
-{"jsonrpc":"2.0","method":"session/update","params":{"sessionId":"{{sessionId}}","update":{"sessionUpdate":"agent_thought_chunk","content":{"type":"text","text":".txt"}}}}
-{"jsonrpc":"2.0","method":"session/update","params":{"sessionId":"{{sessionId}}","update":{"sessionUpdate":"agent_thought_chunk","content":{"type":"text","text":" to"}}}}
-{"jsonrpc":"2.0","method":"session/update","params":{"sessionId":"{{sessionId}}","update":{"sessionUpdate":"agent_thought_chunk","content":{"type":"text","text":" change"}}}}
+{"jsonrpc":"2.0","method":"session/update","params":{"sessionId":"{{sessionId}}","update":{"sessionUpdate":"agent_thought_chunk","content":{"type":"text","text":" currently"}}}}
+{"jsonrpc":"2.0","method":"session/update","params":{"sessionId":"{{sessionId}}","update":{"sessionUpdate":"agent_thought_chunk","content":{"type":"text","text":" says"}}}}
+{"jsonrpc":"2.0","method":"session/update","params":{"sessionId":"{{sessionId}}","update":{"sessionUpdate":"agent_thought_chunk","content":{"type":"text","text":" `"}}}}
+{"jsonrpc":"2.0","method":"session/update","params":{"sessionId":"{{sessionId}}","update":{"sessionUpdate":"agent_thought_chunk","content":{"type":"text","text":"-"}}}}
+{"jsonrpc":"2.0","method":"session/update","params":{"sessionId":"{{sessionId}}","update":{"sessionUpdate":"agent_thought_chunk","content":{"type":"text","text":" the"}}}}
+{"jsonrpc":"2.0","method":"session/update","params":{"sessionId":"{{sessionId}}","update":{"sessionUpdate":"agent_thought_chunk","content":{"type":"text","text":" greeting"}}}}
+{"jsonrpc":"2.0","method":"session/update","params":{"sessionId":"{{sessionId}}","update":{"sessionUpdate":"agent_thought_chunk","content":{"type":"text","text":" message"}}}}
+{"jsonrpc":"2.0","method":"session/update","params":{"sessionId":"{{sessionId}}","update":{"sessionUpdate":"agent_thought_chunk","content":{"type":"text","text":" still"}}}}
+{"jsonrpc":"2.0","method":"session/update","params":{"sessionId":"{{sessionId}}","update":{"sessionUpdate":"agent_thought_chunk","content":{"type":"text","text":" says"}}}}
 {"jsonrpc":"2.0","method":"session/update","params":{"sessionId":"{{sessionId}}","update":{"sessionUpdate":"agent_thought_chunk","content":{"type":"text","text":" \""}}}}
 {"jsonrpc":"2.0","method":"session/update","params":{"sessionId":"{{sessionId}}","update":{"sessionUpdate":"agent_thought_chunk","content":{"type":"text","text":"hel"}}}}
 {"jsonrpc":"2.0","method":"session/update","params":{"sessionId":"{{sessionId}}","update":{"sessionUpdate":"agent_thought_chunk","content":{"type":"text","text":"o"}}}}
 {"jsonrpc":"2.0","method":"session/update","params":{"sessionId":"{{sessionId}}","update":{"sessionUpdate":"agent_thought_chunk","content":{"type":"text","text":" wr"}}}}
 {"jsonrpc":"2.0","method":"session/update","params":{"sessionId":"{{sessionId}}","update":{"sessionUpdate":"agent_thought_chunk","content":{"type":"text","text":"ld"}}}}
 {"jsonrpc":"2.0","method":"session/update","params":{"sessionId":"{{sessionId}}","update":{"sessionUpdate":"agent_thought_chunk","content":{"type":"text","text":"\""}}}}
+{"jsonrpc":"2.0","method":"session/update","params":{"sessionId":"{{sessionId}}","update":{"sessionUpdate":"agent_thought_chunk","content":{"type":"text","text":"`"}}}}
+{"jsonrpc":"2.0","method":"session/update","params":{"sessionId":"{{sessionId}}","update":{"sessionUpdate":"agent_thought_chunk","content":{"type":"text","text":" and"}}}}
+{"jsonrpc":"2.0","method":"session/update","params":{"sessionId":"{{sessionId}}","update":{"sessionUpdate":"agent_thought_chunk","content":{"type":"text","text":" needs"}}}}
 {"jsonrpc":"2.0","method":"session/update","params":{"sessionId":"{{sessionId}}","update":{"sessionUpdate":"agent_thought_chunk","content":{"type":"text","text":" to"}}}}
+{"jsonrpc":"2.0","method":"session/update","params":{"sessionId":"{{sessionId}}","update":{"sessionUpdate":"agent_thought_chunk","content":{"type":"text","text":" say"}}}}
+{"jsonrpc":"2.0","method":"session/update","params":{"sessionId":"{{sessionId}}","update":{"sessionUpdate":"agent_thought_chunk","content":{"type":"text","text":" `"}}}}
+{"jsonrpc":"2.0","method":"session/update","params":{"sessionId":"{{sessionId}}","update":{"sessionUpdate":"agent_thought_chunk","content":{"type":"text","text":"-"}}}}
+{"jsonrpc":"2.0","method":"session/update","params":{"sessionId":"{{sessionId}}","update":{"sessionUpdate":"agent_thought_chunk","content":{"type":"text","text":" the"}}}}
+{"jsonrpc":"2.0","method":"session/update","params":{"sessionId":"{{sessionId}}","update":{"sessionUpdate":"agent_thought_chunk","content":{"type":"text","text":" greeting"}}}}
+{"jsonrpc":"2.0","method":"session/update","params":{"sessionId":"{{sessionId}}","update":{"sessionUpdate":"agent_thought_chunk","content":{"type":"text","text":" message"}}}}
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@@ -219,22 +253,17 @@
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-{"jsonrpc":"2.0","method":"session/update","params":{"sessionId":"{{sessionId}}","update":{"sessionUpdate":"agent_thought_chunk","content":{"type":"text","text":"Edit"}}}}
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@@ -245,25 +274,20 @@
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-{"jsonrpc":"2.0","method":"session/update","params":{"sessionId":"{{sessionId}}","update":{"sessionUpdate":"agent_thought_chunk","content":{"type":"text","text":" Done"}}}}
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@@ -277,8 +301,33 @@
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+{"jsonrpc":"2.0","method":"session/update","params":{"sessionId":"{{sessionId}}","update":{"sessionUpdate":"agent_thought_chunk","content":{"type":"text","text":" user"}}}}
+{"jsonrpc":"2.0","method":"session/update","params":{"sessionId":"{{sessionId}}","update":{"sessionUpdate":"agent_thought_chunk","content":{"type":"text","text":" wants"}}}}
+{"jsonrpc":"2.0","method":"session/update","params":{"sessionId":"{{sessionId}}","update":{"sessionUpdate":"agent_thought_chunk","content":{"type":"text","text":" me"}}}}
+{"jsonrpc":"2.0","method":"session/update","params":{"sessionId":"{{sessionId}}","update":{"sessionUpdate":"agent_thought_chunk","content":{"type":"text","text":" to"}}}}
+{"jsonrpc":"2.0","method":"session/update","params":{"sessionId":"{{sessionId}}","update":{"sessionUpdate":"agent_thought_chunk","content":{"type":"text","text":" read"}}}}
+{"jsonrpc":"2.0","method":"session/update","params":{"sessionId":"{{sessionId}}","update":{"sessionUpdate":"agent_thought_chunk","content":{"type":"text","text":" notes"}}}}
+{"jsonrpc":"2.0","method":"session/update","params":{"sessionId":"{{sessionId}}","update":{"sessionUpdate":"agent_thought_chunk","content":{"type":"text","text":".txt"}}}}
+{"jsonrpc":"2.0","method":"session/update","params":{"sessionId":"{{sessionId}}","update":{"sessionUpdate":"agent_thought_chunk","content":{"type":"text","text":" and"}}}}
+{"jsonrpc":"2.0","method":"session/update","params":{"sessionId":"{{sessionId}}","update":{"sessionUpdate":"agent_thought_chunk","content":{"type":"text","text":" reply"}}}}
+{"jsonrpc":"2.0","method":"session/update","params":{"sessionId":"{{sessionId}}","update":{"sessionUpdate":"agent_thought_chunk","content":{"type":"text","text":" with"}}}}
+{"jsonrpc":"2.0","method":"session/update","params":{"sessionId":"{{sessionId}}","update":{"sessionUpdate":"agent_thought_chunk","content":{"type":"text","text":" \""}}}}
+{"jsonrpc":"2.0","method":"session/update","params":{"sessionId":"{{sessionId}}","update":{"sessionUpdate":"agent_thought_chunk","content":{"type":"text","text":"D"}}}}
+{"jsonrpc":"2.0","method":"session/update","params":{"sessionId":"{{sessionId}}","update":{"sessionUpdate":"agent_thought_chunk","content":{"type":"text","text":"ONE"}}}}
+{"jsonrpc":"2.0","method":"session/update","params":{"sessionId":"{{sessionId}}","update":{"sessionUpdate":"agent_thought_chunk","content":{"type":"text","text":"\""}}}}
+{"jsonrpc":"2.0","method":"session/update","params":{"sessionId":"{{sessionId}}","update":{"sessionUpdate":"agent_thought_chunk","content":{"type":"text","text":" if"}}}}
+{"jsonrpc":"2.0","method":"session/update","params":{"sessionId":"{{sessionId}}","update":{"sessionUpdate":"agent_thought_chunk","content":{"type":"text","text":" line"}}}}
+{"jsonrpc":"2.0","method":"session/update","params":{"sessionId":"{{sessionId}}","update":{"sessionUpdate":"agent_thought_chunk","content":{"type":"text","text":" "}}}}
+{"jsonrpc":"2.0","method":"session/update","params":{"sessionId":"{{sessionId}}","update":{"sessionUpdate":"agent_thought_chunk","content":{"type":"text","text":"2"}}}}
+{"jsonrpc":"2.0","method":"session/update","params":{"sessionId":"{{sessionId}}","update":{"sessionUpdate":"agent_thought_chunk","content":{"type":"text","text":" now"}}}}
+{"jsonrpc":"2.0","method":"session/update","params":{"sessionId":"{{sessionId}}","update":{"sessionUpdate":"agent_thought_chunk","content":{"type":"text","text":" says"}}}}
+{"jsonrpc":"2.0","method":"session/update","params":{"sessionId":"{{sessionId}}","update":{"sessionUpdate":"agent_thought_chunk","content":{"type":"text","text":" \""}}}}
+{"jsonrpc":"2.0","method":"session/update","params":{"sessionId":"{{sessionId}}","update":{"sessionUpdate":"agent_thought_chunk","content":{"type":"text","text":"hello"}}}}
+{"jsonrpc":"2.0","method":"session/update","params":{"sessionId":"{{sessionId}}","update":{"sessionUpdate":"agent_thought_chunk","content":{"type":"text","text":" world"}}}}
+{"jsonrpc":"2.0","method":"session/update","params":{"sessionId":"{{sessionId}}","update":{"sessionUpdate":"agent_thought_chunk","content":{"type":"text","text":"\"."}}}}
+{"jsonrpc":"2.0","method":"session/update","params":{"sessionId":"{{sessionId}}","update":{"sessionUpdate":"tool_call","toolCallId":"call_00_Np3GXLMPMzOdpU1IuScL0900","title":"Read notes.txt","kind":"read","status":"in_progress","locations":[{"path":"notes.txt","line":1}]}}}
+{"jsonrpc":"2.0","method":"session/update","params":{"sessionId":"{{sessionId}}","update":{"sessionUpdate":"tool_call_update","toolCallId":"call_00_Np3GXLMPMzOdpU1IuScL0900","status":"completed","content":[{"type":"content","content":{"type":"text","text":"<path>{{cwd}}/notes.txt</path>\n<type>file</type>\n<content>\n1: project notes\n2: - the greeting message still says \"hello world\"\n\n(End of file - total 2 lines)\n</content>"}}]}}}
 {"jsonrpc":"2.0","method":"session/update","params":{"sessionId":"{{sessionId}}","update":{"sessionUpdate":"agent_thought_chunk","content":{"type":"text","text":"Line"}}}}
 {"jsonrpc":"2.0","method":"session/update","params":{"sessionId":"{{sessionId}}","update":{"sessionUpdate":"agent_thought_chunk","content":{"type":"text","text":" "}}}}
 {"jsonrpc":"2.0","method":"session/update","params":{"sessionId":"{{sessionId}}","update":{"sessionUpdate":"agent_thought_chunk","content":{"type":"text","text":"2"}}}}
@@ -287,16 +336,9 @@
 {"jsonrpc":"2.0","method":"session/update","params":{"sessionId":"{{sessionId}}","update":{"sessionUpdate":"agent_thought_chunk","content":{"type":"text","text":"hello"}}}}
 {"jsonrpc":"2.0","method":"session/update","params":{"sessionId":"{{sessionId}}","update":{"sessionUpdate":"agent_thought_chunk","content":{"type":"text","text":" world"}}}}
 {"jsonrpc":"2.0","method":"session/update","params":{"sessionId":"{{sessionId}}","update":{"sessionUpdate":"agent_thought_chunk","content":{"type":"text","text":"\"."}}}}
-{"jsonrpc":"2.0","method":"session/update","params":{"sessionId":"{{sessionId}}","update":{"sessionUpdate":"agent_thought_chunk","content":{"type":"text","text":" The"}}}}
-{"jsonrpc":"2.0","method":"session/update","params":{"sessionId":"{{sessionId}}","update":{"sessionUpdate":"agent_thought_chunk","content":{"type":"text","text":" user"}}}}
-{"jsonrpc":"2.0","method":"session/update","params":{"sessionId":"{{sessionId}}","update":{"sessionUpdate":"agent_thought_chunk","content":{"type":"text","text":" asked"}}}}
-{"jsonrpc":"2.0","method":"session/update","params":{"sessionId":"{{sessionId}}","update":{"sessionUpdate":"agent_thought_chunk","content":{"type":"text","text":" me"}}}}
-{"jsonrpc":"2.0","method":"session/update","params":{"sessionId":"{{sessionId}}","update":{"sessionUpdate":"agent_thought_chunk","content":{"type":"text","text":" to"}}}}
+{"jsonrpc":"2.0","method":"session/update","params":{"sessionId":"{{sessionId}}","update":{"sessionUpdate":"agent_thought_chunk","content":{"type":"text","text":" I"}}}}
 {"jsonrpc":"2.0","method":"session/update","params":{"sessionId":"{{sessionId}}","update":{"sessionUpdate":"agent_thought_chunk","content":{"type":"text","text":" reply"}}}}
 {"jsonrpc":"2.0","method":"session/update","params":{"sessionId":"{{sessionId}}","update":{"sessionUpdate":"agent_thought_chunk","content":{"type":"text","text":" with"}}}}
-{"jsonrpc":"2.0","method":"session/update","params":{"sessionId":"{{sessionId}}","update":{"sessionUpdate":"agent_thought_chunk","content":{"type":"text","text":" the"}}}}
-{"jsonrpc":"2.0","method":"session/update","params":{"sessionId":"{{sessionId}}","update":{"sessionUpdate":"agent_thought_chunk","content":{"type":"text","text":" single"}}}}
-{"jsonrpc":"2.0","method":"session/update","params":{"sessionId":"{{sessionId}}","update":{"sessionUpdate":"agent_thought_chunk","content":{"type":"text","text":" word"}}}}
 {"jsonrpc":"2.0","method":"session/update","params":{"sessionId":"{{sessionId}}","update":{"sessionUpdate":"agent_thought_chunk","content":{"type":"text","text":" D"}}}}
 {"jsonrpc":"2.0","method":"session/update","params":{"sessionId":"{{sessionId}}","update":{"sessionUpdate":"agent_thought_chunk","content":{"type":"text","text":"ONE"}}}}
 {"jsonrpc":"2.0","method":"session/update","params":{"sessionId":"{{sessionId}}","update":{"sessionUpdate":"agent_thought_chunk","content":{"type":"text","text":"."}}}}

examples/plan-acp-agent/tests/snapshots/plan-mode/system-prompt.golden.md

@@ -5,7 +5,7 @@ You are a coding assistant powered by the deepseek-v4-flash model. Your working
 Verify your work by running the code or tests. Keep answers brief and factual.
 
 
-You are in plan mode: a read-only planning state. Explore, analyze, and design; do not attempt to modify anything — mutating tools are not available and calls to them are denied. Where a bash tool is present it runs under a read-only sandbox: commands that only read work normally, while a command that writes is denied by the sandbox — that denial marks the edge of plan mode rather than a bug, and sandbox escalation is not offered here; put the step in the plan for after approval instead. When a decision or a missing detail blocks the plan, ask the user through the ask_user_question tool where it is available. A finished plan is delivered by calling exit_plan_mode — that call is what puts it in front of the user for review, so prefer it over pasting the plan as a plain reply or asking the user to switch modes themselves. If exit_plan_mode is unavailable or its review fails, ask the user to switch the session out of plan mode instead of retrying denied tools.
+You are in plan mode: a read-only planning state. Explore, analyze, and design; do not modify anything yet — edits and other side effects belong in the plan and run after its approval, not in this mode. Where a bash tool is present it runs under a read-only sandbox: commands that only read work normally, while a command that writes is denied by the sandbox — that denial marks the edge of plan mode rather than a bug, and sandbox escalation is not offered here; put the step in the plan for after approval instead. When a decision or a missing detail blocks the plan, ask the user through the ask_user_question tool where it is available. A finished plan is delivered by calling exit_plan_mode — that call is what puts it in front of the user for review, so prefer it over pasting the plan as a plain reply or asking the user to switch modes themselves. If exit_plan_mode is unavailable or its review fails, ask the user to switch the session out of plan mode instead of pressing on.
 
 Use the read tool — not shell commands like cat — to inspect text files. Results include line numbers. Use offset and limit to continue reading large files.
 
@@ -17,21 +17,6 @@ Check the [exit code: N] marker on every bash result; investigate failures befor
 
 <!-- dsh-user-approval-policy:ask -->
 
-<!-- request/header 2 (snapshot) -->
+<!-- request/header-delta 1: keepStart=7, keepEnd=9 -->
 
-You are an AI agent powered by the DeepSeek Harness SDK.
-
-You are a coding assistant powered by the deepseek-v4-flash model. Your working directory is {{cwd}}. Your bash tool runs under a file sandbox — a `[sandbox: file access denied …]` result is policy, not a command bug.
-
-Verify your work by running the code or tests. Keep answers brief and factual.
-
-
-Use the read tool — not shell commands like cat — to inspect text files. Results include line numbers. Use offset and limit to continue reading large files.
 
-Use the write tool to create files or completely replace file contents. Existing files are overwritten, so read an existing file first (the default fs-policy requires it) and prefer edit for targeted changes.
-
-Use the edit tool for targeted changes to existing UTF-8 text files. It replaces literal old_string with new_string; by default old_string must appear exactly once. If old_string appears multiple times, provide a more specific old_string or set replace_all to true. Read the file first (the default fs-policy requires it), unless you just created or edited it in this session.
-
-Check the [exit code: N] marker on every bash result; investigate failures before moving on.
-
-<!-- dsh-user-approval-policy:ask -->

packages/mode/README.md

@@ -1,9 +1,9 @@
 # mode/ — session-mode policy family
 
-Session modes: named, logged, per-agent policy states, with **plan mode** as the first shipped definition. A single **product** package — there is no interface/implementation seam here, because a mode's variable parts are config values (allowlist, section text), not swappable implementations.
+Session modes: named, logged, per-agent policy states, with **plan mode** as the first shipped definition. A single **product** package — there is no interface/implementation seam here, because a mode's variable parts are config values (section text, the `access` cap), not swappable implementations.
 
 | Package | Role | ctx key |
 |---|---|---|
-| `mode/` | `mode/set` vocabulary + fold, the `ctx.modes` service (list/get/set with the turn-boundary flush), the soft layer (assemble filter + `mode:policy` section), the hard layer (`tools/pre-execute` deny-by-default gate), and the model-facing `exit_plan_mode` review tool | `ctx.modes` |
+| `mode/` | `mode/set` vocabulary + fold, the `ctx.modes` service (list/get/set with the turn-boundary flush), the `mode:policy` guidance section, the `access` cap (a `bash/resolve-mode` clamp plus the cap-derived bash guards), and the model-facing `exit_plan_mode` review tool | `ctx.modes` |
 
 The mode in force is a pure function of the session log (`SessionEventMap['mode/set']`, last one wins), so resume and fork restore it with no extra machinery; the default mode is the absence of policy, keeping the plugin invisible until a mode is set. UIs read flips off `session/event`: the [stdio app](../ui/stdio-agent) exposes `/mode`, the [ACP bridge](../ui/acp) maps the vocabulary to the session-mode picker. RFC: [plan mode](../../docs/rfc/implemented/feature/2026-07-07-plan-mode.md).

packages/mode/mode/README.md

@@ -1,26 +1,20 @@
 # @deepseek-ai/dsh-mode
 
-Session modes: named, logged, per-agent policy states. **Plan mode** is the first shipped definition — the agent explores and designs under a read-only tool policy, produces a reviewable plan, and crosses back into full authority through an explicit review.
+Session modes: named, logged, per-agent policy states. **Plan mode** is the first shipped definition — the agent explores and designs under a read-only stance, produces a reviewable plan, and crosses back into full authority through an explicit review.
 
 ## The mode state is a session event
 
 `mode/set` (`{ mode: string }`) is a log-only, non-surface `SessionEventMap` member with whole-value-replace semantics; the pure `foldMode(events)` returns the mode in force (the last `mode/set`, else `default`). Because the log is the fact channel, resume, fork, and compaction restore the mode with no extra machinery, and UIs read flips off `session/event` — there is no live mirror.
 
-The `default` mode is the absence of policy: no section, no filtering, no gate. An agent that never sees a `mode/set` behaves byte-identically to a deployment that never loads this plugin.
+The `default` mode is the absence of policy: no section, no cap. An agent that never sees a `mode/set` behaves byte-identically to a deployment that never loads this plugin.
 
-## Two layers of enforcement
+## What a mode enforces
 
-**Soft — what the model sees.** A `system-prompt/assemble` listener filters the returned assembly's tools down to the mode's allowlist and the `mode:policy` section (order 50) renders the mode's guidance text. Every transition therefore surfaces as an attributable `request/header` event on the next step (a delta when expressible; adding `exit_plan_mode` resorts the canonical tool list, which the delta encoding cannot express, so entering plan mode logs the full fallback snapshot). The `exit_plan_mode` tool is visible IFF the folded mode is `plan` — on the wire and, under the registry's Code Mode, in the `tools:sdk` section alike.
+**The guidance section.** A `system-prompt/assemble` listener renders the mode's `section` text as the `mode:policy` section (order 50) while the mode is in force, and shows the `exit_plan_mode` tool IFF the folded mode is `plan` — on the wire and, under the registry's Code Mode, in the `tools:sdk` section alike. Every transition therefore surfaces as an attributable `request/header` event on the next step (entering plan adds the exit tool, a front-of-list insertion with no delta form → the full fallback snapshot; the approved exit removes exactly that tool and the section, a pure removal → one `request/header-delta`).
 
-**Hard — what can run.** A `tools/pre-execute` listener denies, deny-by-default against the same allowlist, any call the mode does not permit — a hallucinated call to a still-registered (or freshly re-widened) tool cannot run. Agent-less executions and the default mode pass through; the gate judges by the LOGGED mode only, never a pending intent. `run_code` passes both layers as a TRANSPORT: under the registry's Code Mode it is the only wire tool, every bridged sub-call re-enters this gate with the same agent, and the `tools:sdk` section is re-rendered under the mode's visibility rule — the allowlist governs each capability individually and the prompt documents exactly the callable set.
+**The `access` cap.** A definition may declare `access` — the widest sandbox access shell commands run under while the mode is in force, on the `SANDBOX_MODES` ladder from [`@deepseek-ai/dsh-bash`](../../bash/bash/) (`read-only` | `workspace-write` | `danger-full-access`). The built-in `plan` ships `access: 'read-only'`: exploration commands run for real, and a write is denied by the sandbox itself. The cap is a **clamp, not a switch**: a `bash/resolve-mode` waterfall listener returns `min(resolved, access)` on the ladder. The session's own sandbox-mode knob (`bash/sandbox-mode` events) is never written — the two folds compose at read time, so the knob and the mode switch in any order without disturbing each other, and a knob flipped during plan re-emerges intact on exit. Two guards ride with a declared cap: the bash trio (`bash`/`bash_output`/`bash_kill`) is hidden and denied while no confining executor is mounted (`ctx.bash.sandboxMode` unset — an unconfinable shell cannot honor the cap), and a `bash` call carrying `sandbox_permissions` is denied outright (the cap would otherwise be pierceable mid-mode by one approval prompt). A mode without `access` gets neither guard.
 
-## The `access` cap
-
-A definition may declare `access` — the widest sandbox access shell commands run under while the mode is in force, using the `SANDBOX_MODES` ladder from [`@deepseek-ai/dsh-bash`](../../bash/bash/) (`read-only` | `workspace-write` | `danger-full-access`). The built-in `plan` ships `access: 'read-only'`, which is what lets it keep `bash` on the allowlist: exploration commands run for real, and a write is denied by the sandbox itself.
-
-The cap is a **clamp, not a switch**: a `bash/resolve-mode` waterfall listener returns `min(resolved, access)` on the ladder. The session's own sandbox-mode knob (`bash/sandbox-mode` events) is never written — the two folds compose at read time, so the knob and the mode switch in any order without disturbing each other, and a knob flipped during plan re-emerges intact on exit. Both derive from the same log, so resume restores the composition for free.
-
-Two consequences ride with a declared cap. The bash trio (`bash`/`bash_output`/`bash_kill`) becomes CONDITIONAL: both policy layers admit it only while a confining executor is mounted (`ctx.bash.sandboxMode` set — an unconfinable shell cannot honor the cap, so under `dsh-bash-local` the trio is hidden and denied like any non-allowlisted tool). And sandbox ESCALATION is denied outright: a `bash` call carrying `sandbox_permissions` gets a deny that points the model at putting the widened step in the plan — the cap would otherwise be pierceable mid-mode by one approval prompt. A mode that allowlists `bash` WITHOUT `access` is the deployment's explicit choice of an uncapped shell in that mode; neither rule applies.
+**Deliberately absent: a tool allow/deny list.** Which tools a mode admits is an effects question — a per-tool read-only/mutating classification the harness does not yet have. Until tool definitions declare their effects (the plan-mode RFC's deferred item), a mode's non-shell restraint is the section's guidance and its shell restraint is the sandbox; the config vocabulary is exactly `{ section, access? }`, and an unknown key (a `tools` list included) fails loud at load.
 
 ## `ctx.modes`
 
@@ -30,7 +24,7 @@ Two consequences ride with a declared cap. The bash trio (`bash`/`bash_output`/`
 
 ## `exit_plan_mode`
 
-The model-facing exit tool. Its single required argument is the plan text — a durable, replayable log artifact riding the ordinary `tool/call` event. `execute` re-checks the folded mode, then conducts the review over the user-interaction seam (`ctx.get('userInteraction')`, opportunistic): one single-select question — Approve, or Keep planning — with the free-text channel open. Approve records the switch back to `default` as a silent boundary-applied pending intent (flushed at this step's end — the gate stays plan-mode for any remaining call of the same assistant response) and the next step's assembly restores the full toolset; every other outcome (keep-planning with the user's feedback verbatim, an aborted question, no provider) returns the corrective `isError` and the mode stays `plan`. `presentCall` renders a `generic` card titled by the plan's first heading with the plan markdown as content; over ACP the review rides the same elicitation flow as `ask_user_question`, in the terminal the stdio provider's prompt queue.
+The model-facing exit tool. Its single required argument is the plan text — a durable, replayable log artifact riding the ordinary `tool/call` event. `execute` re-checks the folded mode, then conducts the review over the user-interaction seam (`ctx.get('userInteraction')`, opportunistic): one single-select question — Approve, or Keep planning — with the free-text channel open. Approve records the switch back to `default` as a silent boundary-applied pending intent (flushed at this step's end — the plan policy, the sandbox clamp included, keeps holding for any remaining call of the same assistant response) and the next step runs unclamped; every other outcome (keep-planning with the user's feedback verbatim, an aborted question, no provider) returns the corrective `isError` and the mode stays `plan`. `presentCall` renders a `generic` card titled by the plan's first heading with the plan markdown as content; over ACP the review rides the same elicitation flow as `ask_user_question`, in the terminal the stdio provider's prompt queue.
 
 ## Config
 
@@ -42,10 +36,9 @@ The model-facing exit tool. Its single required argument is the plan text — a
       plan:
         section: |
           You are in plan mode: ...
-        tools: [read, todo_write, web_search, web_fetch, ask_user_question, structured_output, bash, bash_output, bash_kill, exit_plan_mode]
         access: read-only
 ```
 
-Definitions are validated at load (`resolveConfig`): the built-in `plan` (the read-only allowlist above — the ask/report channels `ask_user_question`/`structured_output` included, the bash trio conditional on a confining executor via `access: read-only`, `subagent` excluded) merges unless overridden, `default` is rejected as a key, an `access` outside the `SANDBOX_MODES` ladder throws, and allowlists may name not-yet-registered tools (registration is dynamic). An unknown name fails loudly at `set()` time.
+Definitions are validated at load (`resolveConfig`): the built-in `plan` (the shipped guidance section plus `access: read-only`) merges unless overridden, `default` is rejected as a key, an `access` outside the `SANDBOX_MODES` ladder throws, and any other key — a `tools` list included — fails loud. An unknown mode name fails loudly at `set()` time.
 
 RFC: [plan mode](../../../docs/rfc/implemented/feature/2026-07-07-plan-mode.md).

packages/mode/mode/src/index.ts

@@ -1,18 +1,22 @@
 /**
  * Session modes: named, logged, per-agent policy states, with **plan mode** as
- * the first shipped definition. A mode names which tools stay visible (the
- * soft layer, a `system-prompt/assemble` filter plus a guidance section) and
- * which may run (the hard layer, a deny-by-default `tools/pre-execute` gate);
- * a mode may also declare `access` — a cap the bash seam's per-call sandbox
- * resolution is clamped to while the mode is in force (a `bash/resolve-mode`
- * listener), composing with the session's own sandbox knob without ever
- * writing it. The mode IN FORCE for an agent is session state, folded from
- * its log (`mode/set`, last one wins), so resume and fork restore it for free.
+ * the first shipped definition. A mode carries the guidance section the model
+ * sees while it is in force and, optionally, an `access` cap — the widest
+ * sandbox access shell commands run under, made real as a `bash/resolve-mode`
+ * clamp (composing with the session's own sandbox knob without ever writing
+ * it) plus two cap-derived guards: the bash tools are withheld when no
+ * confining executor can honor the cap, and sandbox escalation is denied
+ * while the cap holds. There is deliberately NO general tool allow/deny
+ * list: which tools a mode admits is an effects question, parked until tool
+ * definitions can declare their effects (the plan-mode RFC's deferred item) —
+ * until then a mode's non-shell restraint is the section's guidance, and its
+ * shell restraint is the sandbox. The mode IN FORCE for an agent is session
+ * state, folded from its log (`mode/set`, last one wins), so resume and fork
+ * restore it for free.
  *
- * The default mode is the absence of policy: no section, no filtering, no
- * gate. An agent that never sees a `mode/set` behaves byte-identically to a
- * deployment that never loads this plugin, so it is safe to compose
- * unconditionally.
+ * The default mode is the absence of policy: no section, no cap. An agent
+ * that never sees a `mode/set` behaves byte-identically to a deployment that
+ * never loads this plugin, so it is safe to compose unconditionally.
  *
  * User flips go through {@link ModesService.set}: every session event is
  * turn-enclosed and an idle agent has no open turn, so `set()` records a
@@ -86,15 +90,14 @@ export const PLAN_MODE = 'plan'
 export const EXIT_PLAN_MODE = 'exit_plan_mode'
 
 /**
- * One mode's deployment-configured policy: the guidance section the model sees,
- * the allowlist of tool names that stay visible and executable, and an
- * optional cap on the sandbox access shell commands run under.
+ * One mode's deployment-configured policy: the guidance section the model sees
+ * and an optional cap on the sandbox access shell commands run under. There
+ * is deliberately no tool allow/deny list — which tools a mode admits is an
+ * effects question, parked until tool definitions declare their effects.
  */
 export interface ModeDefinition {
   /** Guidance text rendered as the `mode:policy` prompt section while the mode is in force. */
   section: string
-  /** Allowlist of tool NAMES; names may reference not-yet-registered tools (registration is dynamic). */
-  tools: string[]
   /**
    * The widest sandbox access shell commands may run under while this mode is
    * in force — a per-call CAP on the bash seam's resolved mode (a
@@ -125,36 +128,27 @@ export interface ResolvedModes {
 
 const PLAN_SECTION
   = 'You are in plan mode: a read-only planning state. Explore, analyze, and design; '
-  + 'do not attempt to modify anything — mutating tools are not available and calls '
-  + 'to them are denied. Where a bash tool is present it runs under a read-only '
-  + 'sandbox: commands that only read work normally, while a command that writes is '
-  + 'denied by the sandbox — that denial marks the edge of plan mode rather than a '
-  + 'bug, and sandbox escalation is not offered here; put the step in the plan for '
-  + 'after approval instead. When a decision or a missing detail blocks the plan, ask the '
+  + 'do not modify anything yet — edits and other side effects belong in the plan and '
+  + 'run after its approval, not in this mode. Where a bash tool is present it runs '
+  + 'under a read-only sandbox: commands that only read work normally, while a command '
+  + 'that writes is denied by the sandbox — that denial marks the edge of plan mode '
+  + 'rather than a bug, and sandbox escalation is not offered here; put the step in '
+  + 'the plan for after approval instead. When a decision or a missing detail blocks the plan, ask the '
   + 'user through the ask_user_question tool where it is available. A finished plan '
   + 'is delivered by calling exit_plan_mode — that call is what puts it in front of '
   + 'the user for review, so prefer it over pasting the plan as a plain reply or '
   + 'asking the user to switch modes themselves. If exit_plan_mode is unavailable or '
   + 'its review fails, ask the user to switch the session out of plan mode instead '
-  + 'of retrying denied tools.'
+  + 'of pressing on.'
 
 /**
  * The three bash tools an `access` cap conditions on a confining executor:
  * `bash` runs commands under the capped sandbox; `bash_output`/`bash_kill`
- * only observe and stop tasks that ran under it.
+ * only observe and stop tasks that ran under it. Both policy layers withhold
+ * the trio when no mounted executor can honor the cap.
  */
 const BASH_FAMILY = ['bash', 'bash_output', 'bash_kill']
 
-// 'structured_output' is a structured subagent child's result channel (pure
-// reporting, the ask/exit class of read-only-safe): its runtime re-injects the
-// schema into the FINAL assembly from an outermost per-spawn listener, so
-// allowlisting is what keeps the soft filter, that re-injection, and the hard
-// gate telling one consistent story when such a child runs in plan mode.
-// The bash trio is allowlisted CONDITIONALLY: plan's read-only `access` cap
-// can only be honored by a confining executor, so both policy layers admit
-// these three only while `ctx.bash.sandboxMode` proves one is mounted.
-const PLAN_TOOLS = ['read', 'todo_write', 'web_search', 'web_fetch', 'ask_user_question', 'structured_output', ...BASH_FAMILY, EXIT_PLAN_MODE]
-
 /** The review question's approve option label — the answer item is matched by it. */
 const APPROVE_LABEL = 'Approve'
 
@@ -164,7 +158,7 @@ const KEEP_PLANNING_LABEL = 'Keep planning'
 const EXIT_DESCRIPTION
   = 'Present your plan for the user\'s review and, on approval, leave plan mode. '
   + 'Send the COMPLETE plan as markdown, starting with a # heading that names it. '
-  + 'The user may approve (the full toolset returns on your next step) or keep '
+  + 'The user may approve (carry out the plan from your next step) or keep '
   + 'planning — their feedback comes back in the tool result; revise and present again.'
 
 /** The plan's first markdown heading (any level), or `undefined` when it has none. */
@@ -191,7 +185,7 @@ function hasEscalationArgs(args: unknown): boolean {
  */
 export function resolveConfig(config: ModeConfig): ResolvedModes {
   const definitions = new Map<string, ModeDefinition>()
-  definitions.set(PLAN_MODE, { section: PLAN_SECTION, tools: [...PLAN_TOOLS], access: 'read-only' })
+  definitions.set(PLAN_MODE, { section: PLAN_SECTION, access: 'read-only' })
   for (const [name, definition] of Object.entries(config.modes ?? {})) {
     if (name === DEFAULT_MODE) {
       throw new Error(`ModeConfig: "${DEFAULT_MODE}" is reserved (the absence of policy) and cannot be defined`)
@@ -199,15 +193,18 @@ export function resolveConfig(config: ModeConfig): ResolvedModes {
     if (typeof definition.section !== 'string') {
       throw new Error(`ModeConfig: mode "${name}" needs a string \`section\``)
     }
-    if (!Array.isArray(definition.tools) || definition.tools.some(tool => typeof tool !== 'string')) {
-      throw new Error(`ModeConfig: mode "${name}" needs a \`tools\` array of tool names`)
-    }
     if (definition.access !== undefined && !SANDBOX_MODES.includes(definition.access)) {
       throw new Error(`ModeConfig: mode "${name}" has unknown access ${JSON.stringify(definition.access)} — one of: ${SANDBOX_MODES.join(', ')}`)
     }
+    // Unknown keys fail loud rather than silently shaping nothing — the
+    // definition vocabulary is exactly { section, access? } (a tool
+    // allow/deny list is deliberately NOT part of it; see the module doc).
+    const unknown = Object.keys(definition).filter(key => key !== 'section' && key !== 'access')
+    if (unknown.length > 0) {
+      throw new Error(`ModeConfig: mode "${name}" has unknown key(s) ${unknown.join(', ')} — a definition is { section, access? }`)
+    }
     definitions.set(name, {
       section: definition.section,
-      tools: [...definition.tools],
       ...definition.access !== undefined ? { access: definition.access } : {},
     })
   }
@@ -298,10 +295,9 @@ export class ModesService extends Service {
 
     // prepend: the filter wraps OUTSIDE every append-registered listener
     // regardless of load order, so their post-next() additions are filtered
-    // too. A listener that ALSO prepends after this plugin loads (the
-    // structured runtime's per-spawn wrapper) still wins the wrap — for that
-    // one the allowlist carries the contract, and the hard gate covers
-    // execution either way.
+    // too. What it hides is deliberately narrow: the exit tool outside plan
+    // mode, and the bash trio when an access cap cannot be honored — there is
+    // no general allowlist (see the module doc).
     ctx.on('system-prompt/assemble', async (_assembly, context, next) => {
       const result = await next()
       const agent = context.agent
@@ -318,26 +314,18 @@ export class ModesService extends Service {
         rerenderSdk(result, name => name !== EXIT_PLAN_MODE)
         return result
       }
-      const allowed = new Set(active.definition.tools)
       // An access-capped mode exposes the bash trio only while a confining
       // executor is mounted — advertised tools stay honest about the cap.
       // Read per assembly via ctx.get (never static inject): the executor is
       // optional to this plugin and may swap at runtime.
       const bashUsable = active.definition.access === undefined || ctx.get('bash')?.sandboxMode !== undefined
       const visible = (name: string): boolean =>
-        allowed.has(name)
-        && (name !== EXIT_PLAN_MODE || active.name === PLAN_MODE)
+        (name !== EXIT_PLAN_MODE || active.name === PLAN_MODE)
         && (bashUsable || !BASH_FAMILY.includes(name))
-      // run_code is a TRANSPORT, not a capability: under the registry's Code
-      // Mode it is the only wire tool (filtering it would leave the model
-      // with nothing, not even the exit), and every bridged sub-call
-      // re-enters tools/pre-execute with the same agent, where the allowlist
-      // governs each capability individually.
-      result.tools = result.tools.filter(tool => visible(tool.name) || tool.name === RUN_CODE_NAME)
+      result.tools = result.tools.filter(tool => visible(tool.name))
       // Code Mode's soft surface is the SDK section, not the wire schemas —
       // section text resolves in assemble's base, so the outermost wrapper
       // re-renders it under the same visibility rule the wire filter applies.
-      // Without this the prompt would document bindings the gate denies.
       rerenderSdk(result, visible)
       return result
     }, { prepend: true })
@@ -357,37 +345,36 @@ export class ModesService extends Service {
         index === sdkIndex ? { ...section, text: sdkText } : section)
     }
 
+    // The cap-derived guard — the ONLY execution gating this plugin does
+    // (there is no general tool gate; see the module doc). Two rules, both
+    // riding a declared `access`: the bash trio cannot run when no confining
+    // executor can honor the cap, and a `bash` call carrying the escalation
+    // field cannot pierce the cap mid-mode.
     ctx.on('tools/pre-execute', (exec, next): Promise<PreToolDecision> => {
       if (exec.agent === undefined) return next()
       const active = this.activeDefinition(exec.agent.session)
-      if (active === undefined) return next()
-      // Transport pass-through: a run_code program's every tool call is
-      // serialized back through ToolRegistry.execute() with the same agent,
-      // so each sub-call is judged here individually — gating the wrapper
-      // would only remove the vehicle, not widen or narrow any capability.
-      if (exec.name === RUN_CODE_NAME) return next()
-      // The bash trio is conditional under an access cap: without a confining
-      // executor the cap cannot be honored, so the trio reads as not
-      // allowlisted — the same absence the assemble filter's hiding implies.
-      const capped = active.definition.access !== undefined && BASH_FAMILY.includes(exec.name)
-      const bashUsable = !capped || ctx.get('bash')?.sandboxMode !== undefined
-      if (active.definition.tools.includes(exec.name) && bashUsable) {
-        // A capped mode admits `bash` but no widening: escalation would pierce
-        // the cap mid-mode. Denied HERE, before tool-bash's escalation path
-        // would treat the clamped resolution as a legitimate baseline and
-        // raise the approval prompt.
-        if (capped && exec.name === 'bash' && hasEscalationArgs(exec.arguments)) {
-          return Promise.resolve({
-            kind: 'deny',
-            reason: `sandbox escalation is not available in ${active.name} mode — the sandbox stays ${active.definition.access} while it is in force; put the wider-access step in the plan for after approval`,
-          })
-        }
-        return next()
+      const access = active?.definition.access
+      if (active === undefined || access === undefined) return next()
+      if (!BASH_FAMILY.includes(exec.name)) return next()
+      if (ctx.get('bash')?.sandboxMode === undefined) {
+        // Unhonorable cap: the trio is hidden by the filter, and a call that
+        // arrives anyway (hallucinated, or re-widened by a foreign assemble
+        // listener) is refused — never run unconfined under a capped mode.
+        return Promise.resolve({
+          kind: 'deny',
+          reason: `tool "${exec.name}" is not available in ${active.name} mode: its ${access} sandbox cap needs a sandboxing bash executor, and none is mounted`,
+        })
+      }
+      if (exec.name === 'bash' && hasEscalationArgs(exec.arguments)) {
+        // Denied HERE, before tool-bash's escalation path would treat the
+        // clamped resolution as a legitimate baseline and raise the approval
+        // prompt.
+        return Promise.resolve({
+          kind: 'deny',
+          reason: `sandbox escalation is not available in ${active.name} mode — the sandbox stays ${access} while it is in force; put the wider-access step in the plan for after approval`,
+        })
       }
-      const reason = active.name === PLAN_MODE
-        ? `tool "${exec.name}" is not available in plan mode; continue planning and present your plan with ${EXIT_PLAN_MODE} when ready`
-        : `tool "${exec.name}" is not available in "${active.name}" mode`
-      return Promise.resolve({ kind: 'deny', reason })
+      return next()
     })
 
     // The access cap made real: clamp the bash seam's per-call resolution to
@@ -426,7 +413,7 @@ export class ModesService extends Service {
             header: 'Plan review',
             question: 'Approve this plan and leave plan mode?',
             options: [
-              { label: APPROVE_LABEL, description: 'Leave plan mode; the full toolset returns on the next step.' },
+              { label: APPROVE_LABEL, description: 'Leave plan mode; the plan is carried out from the next step.' },
               { label: KEEP_PLANNING_LABEL, description: 'Stay in plan mode; feedback goes back to the model.' },
             ],
           }],
@@ -444,14 +431,15 @@ export class ModesService extends Service {
         }
         // A boundary-applied switch, NOT a direct append: the loop may still
         // execute further tool calls from the SAME assistant response after
-        // this one, and they were requested under the plan-shaped header — a
-        // same-batch exit_plan_mode + write pair must not smuggle the write
-        // past the gate. The flush at this step's end appends the mode/set
-        // (still in-turn), so the next step's assembly widens; narrate: false —
-        // this result IS the narration.
+        // this one, and they were requested under the plan-shaped header — so
+        // the plan policy (the read-only sandbox clamp, the exit tool's
+        // visibility) must keep holding for that whole batch. The flush at
+        // this step's end appends the mode/set (still in-turn), so the next
+        // step's assembly widens; narrate: false — this result IS the
+        // narration.
         this.pendingIntents.set(agent.session, { mode: DEFAULT_MODE, narrate: false })
         const note = item.custom === undefined || item.custom === '' ? '' : ` User note: ${item.custom}`
-        return [{ type: 'text', text: `Plan approved — plan mode exited; the full toolset returns on your next step.${note}` }]
+        return [{ type: 'text', text: `Plan approved — plan mode exited; carry out the plan starting with your next step.${note}` }]
       },
       presentCall: args => ({
         card: 'generic',

packages/mode/mode/tests/integration.spec.ts

@@ -13,9 +13,10 @@ import { MockAdapter, textResponse, toolCallResponse } from '../../../core/agent
 /**
  * Full-loop integration: a scripted mock model drives the REAL mode plugin
  * through the agent loop — the pending-intent flush at the turn boundary, the
- * assembly the soft layer filters, the `request/header`/`request/header-delta`
- * trail every transition leaves, and the hard gate's deny. Only the model is
- * mocked; the loop, the session log, and the plugin are real.
+ * assembly the soft layer shapes (the exit tool + mode section), and the
+ * `request/header`/`request/header-delta` trail every transition leaves.
+ * Only the model is mocked; the loop, the session log, and the plugin are
+ * real.
  */
 async function harness(adapter: MockAdapter): Promise<Context> {
   const ctx = new Context()
@@ -62,10 +63,10 @@ function findEvent<T extends SessionEvent['type']>(
 }
 
 describe('plan mode through the agent loop', () => {
-  it('seeds plan mode from AgentOptions: the FIRST header is already plan-shaped and the gate denies a write', async () => {
+  it('seeds plan mode from AgentOptions: the FIRST header is already plan-shaped, and a non-shell call is guidance-constrained only', async () => {
     const adapter = new MockAdapter([
-      toolCallResponse('call-1', 'write', {}, 'Trying to write anyway.'),
-      textResponse('Back to planning.'),
+      toolCallResponse('call-1', 'write', {}, 'Writing during plan.'),
+      textResponse('Noted in the plan.'),
     ])
     const ctx = await harness(adapter)
     const agent = ctx.agentLoop.create(AgentId('it-plan-seed'), { model: 'mock', mode: PLAN_MODE })
@@ -78,16 +79,19 @@ describe('plan mode through the agent loop', () => {
     const header = findEvent(log, 'request/header')
     expect(modeSet.seq).toBeLessThan(header.seq)
     expect(header.data.reason).toBe('initial')
-    expect(header.data.header.tools?.map(tool => tool.name)).toEqual(['exit_plan_mode', 'read'])
+    expect(header.data.header.tools?.map(tool => tool.name)).toEqual(['exit_plan_mode', 'read', 'write'])
     expect(header.data.header.system).toContain('plan mode')
 
+    // No general tool gate: the write RUNS — plan's non-shell restraint is
+    // the section's guidance (the shell restraint is the sandbox clamp,
+    // pinned in mode.spec). The mode itself stays plan throughout.
     const result = findEvent(log, 'tool/result')
-    expect(result.data.isError).toBe(true)
+    expect(result.data.isError).toBe(false)
     expect(foldMode(log)).toBe(PLAN_MODE)
     expect(log.some(event => event.type === 'context/message')).toBe(false)
   })
 
-  it('a user flip between turns lands at the boundary: one notice and the widening header delta', async () => {
+  it('a user flip between turns lands at the boundary: one notice and the plan-shaped fallback header', async () => {
     const adapter = new MockAdapter([
       textResponse('First turn, default mode.'),
       textResponse('Second turn, plan mode.'),
@@ -110,12 +114,12 @@ describe('plan mode through the agent loop', () => {
     expect(findEvent(log, 'context/message').data.content).toEqual([
       { type: 'text', text: 'The user switched this session to plan mode.' },
     ])
-    // The narrowing header change is logged as a FULL fallback snapshot, not a
-    // delta: adding exit_plan_mode reorders the canonical tool list (it sorts
+    // The header change is logged as a FULL fallback snapshot, not a delta:
+    // adding exit_plan_mode reorders the canonical tool list (it sorts
     // first), and a pure reordering is inexpressible in the delta encoding.
     const second = findEvent(log, 'request/header', 'last')
     expect(second.data.reason).toBe('fallback')
-    expect(second.data.header.tools?.map(tool => tool.name)).toEqual(['exit_plan_mode', 'read'])
+    expect(second.data.header.tools?.map(tool => tool.name)).toEqual(['exit_plan_mode', 'read', 'write'])
     expect(second.data.header.system).toContain('plan mode')
   })
 })

packages/mode/mode/tests/mode.spec.ts

@@ -75,42 +75,42 @@ function execute(ctx: Context, name: string, agent?: Agent) {
 }
 
 describe('resolveConfig', () => {
-  it('merges the built-in plan definition with the read-only allowlist', () => {
+  it('merges the built-in plan definition: guidance section + read-only access cap, no tool list', () => {
     const resolved = resolveConfig({})
     const plan = resolved.definitions.get(PLAN_MODE)
-    expect(plan?.tools).toEqual(['read', 'todo_write', 'web_search', 'web_fetch', 'ask_user_question', 'structured_output', 'bash', 'bash_output', 'bash_kill', EXIT_PLAN_MODE])
+    expect(plan).toEqual({ section: plan?.section, access: 'read-only' })
     expect(plan?.section).toContain('plan mode')
-    expect(plan?.access).toBe('read-only')
   })
 
   it('lets config override plan and add further modes', () => {
     const resolved = resolveConfig({ modes: {
-      plan: { section: 'custom plan', tools: ['read'] },
-      review: { section: 'review', tools: ['read', 'write'] },
+      plan: { section: 'custom plan' },
+      review: { section: 'review', access: 'workspace-write' },
     } })
-    expect(resolved.definitions.get(PLAN_MODE)).toEqual({ section: 'custom plan', tools: ['read'] })
-    expect(resolved.definitions.get('review')).toEqual({ section: 'review', tools: ['read', 'write'] })
+    expect(resolved.definitions.get(PLAN_MODE)).toEqual({ section: 'custom plan' })
+    expect(resolved.definitions.get('review')).toEqual({ section: 'review', access: 'workspace-write' })
   })
 
   it('rejects the reserved default key loudly', () => {
-    expect(() => resolveConfig({ modes: { default: { section: '', tools: [] } } }))
+    expect(() => resolveConfig({ modes: { default: { section: '' } } }))
       .toThrow('"default" is reserved')
   })
 
   it('rejects a malformed definition loudly', () => {
-    expect(() => resolveConfig({ modes: { bad: { section: 5, tools: [] } as unknown as { section: string; tools: string[] } } }))
+    expect(() => resolveConfig({ modes: { bad: { section: 5 } as unknown as { section: string } } }))
       .toThrow('needs a string `section`')
-    expect(() => resolveConfig({ modes: { bad: { section: '', tools: 'read' } as unknown as { section: string; tools: string[] } } }))
-      .toThrow('needs a `tools` array')
-    expect(() => resolveConfig({ modes: { bad: { section: '', tools: [7] } as unknown as { section: string; tools: string[] } } }))
-      .toThrow('needs a `tools` array')
+    // Unknown keys fail loud — a tool allow/deny list is deliberately not
+    // part of the vocabulary, and a config still carrying one must not be
+    // silently accepted as if it shaped anything.
+    expect(() => resolveConfig({ modes: { bad: { section: '', tools: ['read'] } as unknown as { section: string } } }))
+      .toThrow('unknown key(s) tools — a definition is { section, access? }')
   })
 
   it('validates access against the sandbox-mode ladder', () => {
-    expect(() => resolveConfig({ modes: { locked: { section: 's', tools: [], access: 'sealed' as never } } }))
+    expect(() => resolveConfig({ modes: { locked: { section: 's', access: 'sealed' as never } } }))
       .toThrow('unknown access "sealed" — one of: read-only, workspace-write, danger-full-access')
-    const resolved = resolveConfig({ modes: { locked: { section: 's', tools: ['bash'], access: 'workspace-write' } } })
-    expect(resolved.definitions.get('locked')).toEqual({ section: 's', tools: ['bash'], access: 'workspace-write' })
+    const resolved = resolveConfig({ modes: { locked: { section: 's', access: 'workspace-write' } } })
+    expect(resolved.definitions.get('locked')).toEqual({ section: 's', access: 'workspace-write' })
   })
 })
 
@@ -135,7 +135,7 @@ describe('foldMode', () => {
 
 describe('ctx.modes: list/get/set', () => {
   it('lists default first, then the configured definitions', async () => {
-    const ctx = await setup({ modes: { review: { section: 's', tools: [] } } })
+    const ctx = await setup({ modes: { review: { section: 's' } } })
     expect(ctx.modes.list()).toEqual([DEFAULT_MODE, PLAN_MODE, 'review'])
   })
 
@@ -318,38 +318,38 @@ describe('the soft layer', () => {
     expect(assembly.sections.find(section => section.name === 'mode:policy')?.text).toBe('')
   })
 
-  it('filters plan-mode tools to the allowlist and renders the mode section', async () => {
+  it('keeps the full toolset in plan mode, adds the exit tool, and renders the mode section', async () => {
     const ctx = await setup()
     registerNamedTools(ctx, ['read', 'write', 'todo_write'])
     const agent = agentWithSession()
     agent.session.append('mode/set', { mode: PLAN_MODE })
     const assembly = await ctx.systemPrompt.assemble({ agent })
-    expect(assembly.tools.map(tool => tool.name).sort()).toEqual([EXIT_PLAN_MODE, 'read', 'todo_write'])
+    expect(assembly.tools.map(tool => tool.name).sort()).toEqual([EXIT_PLAN_MODE, 'read', 'todo_write', 'write'])
     expect(assembly.sections.find(section => section.name === 'mode:policy')?.text).toContain('plan mode')
   })
 
-  it('drops exit_plan_mode outside plan mode even when a custom allowlist names it', async () => {
-    const ctx = await setup({ modes: { review: { section: 'reviewing', tools: ['read', EXIT_PLAN_MODE] } } })
+  it('drops exit_plan_mode outside plan mode (custom modes never see it)', async () => {
+    const ctx = await setup({ modes: { review: { section: 'reviewing' } } })
     registerNamedTools(ctx, ['read', 'write'])
     const agent = agentWithSession()
     agent.session.append('mode/set', { mode: 'review' })
     const assembly = await ctx.systemPrompt.assemble({ agent })
-    expect(assembly.tools.map(tool => tool.name)).toEqual(['read'])
+    expect(assembly.tools.map(tool => tool.name)).toEqual(['read', 'write'])
     expect(assembly.sections.find(section => section.name === 'mode:policy')?.text).toBe('reviewing')
   })
 
-  it('filters additions from an append-registered final-assembly mutator, regardless of load order', async () => {
-    // A foreign listener that post-processes await next() and was registered
-    // BEFORE dsh-mode loaded: under append ordering it would wrap OUTSIDE the
-    // filter and its re-added tool would leak into the plan-mode header. The
-    // filter registers with prepend, so it wraps outside every
-    // append-registered listener and filters their additions too.
+  it('leaves foreign post-next() additions alone in plan mode (no general tool filtering)', async () => {
+    // A foreign listener that post-processes await next(): the mode filter
+    // wraps outside it (prepend) but hides only the exit tool outside plan
+    // and the bash trio under an unhonorable cap — a foreign addition
+    // survives, because which tools a mode admits is deliberately not this
+    // plugin's decision (the effects question stays parked; module doc).
     const ctx = new Context()
     await ctx.plugin(SystemPrompt)
     await ctx.plugin(ToolRegistry)
     ctx.on('system-prompt/assemble', async (_assembly, _context, next) => {
       const final = await next()
-      final.tools = [...final.tools, { name: 'smuggled', description: 'added after next()', parameters: {} }]
+      final.tools = [...final.tools, { name: 'added-later', description: 'added after next()', parameters: {} }]
       return final
     })
     await ctx.plugin(ModesService)
@@ -357,10 +357,10 @@ describe('the soft layer', () => {
     const agent = agentWithSession()
     agent.session.append('mode/set', { mode: PLAN_MODE })
     const assembly = await ctx.systemPrompt.assemble({ agent })
-    expect(assembly.tools.map(tool => tool.name)).toEqual(['exit_plan_mode', 'read'])
+    expect(assembly.tools.map(tool => tool.name)).toEqual(['exit_plan_mode', 'read', 'added-later'])
   })
 
-  it('keeps run_code visible in plan mode under the registry Code Mode (transport, not capability)', async () => {
+  it('keeps run_code the only wire tool in plan mode under the registry Code Mode; the SDK gains the exit binding', async () => {
     // Minimal scriptable runtime: the SDK section resolves ctx.codeRuntime at
     // assembly time (the code-mode.spec fake's shape).
     class FakeRuntime extends CodeRuntime {
@@ -377,19 +377,16 @@ describe('the soft layer', () => {
     const agent = agentWithSession()
     agent.session.append('mode/set', { mode: PLAN_MODE })
     const assembly = await ctx.systemPrompt.assemble({ agent })
-    // Code Mode's only wire tool survives the filter — without it the model
-    // would have NO tools at all, not even a path to the exit review.
     expect(assembly.tools.map(tool => tool.name)).toEqual(['run_code'])
-    // The SDK section is Code Mode's soft surface: it is re-rendered under
-    // the same visibility rule, so plan mode documents exactly the callable
-    // bindings — the allowlisted read and the exit — and never the denied write.
+    // The SDK documents the full binding set plus the exit — plan mode no
+    // longer prunes capabilities; its restraint is the section + the sandbox.
     const sdk = assembly.sections.find(section => section.name === 'tools:sdk')?.text ?? ''
     expect(sdk).toContain('read(args:')
+    expect(sdk).toContain('write(args:')
     expect(sdk).toContain('exit_plan_mode(args:')
-    expect(sdk).not.toContain('write(args:')
   })
 
-  it('filters native wire schemas by the allowlist under mode both, alongside the pruned SDK', async () => {
+  it('keeps native wire schemas and the SDK in step under mode both', async () => {
     class FakeRuntime extends CodeRuntime {
       readonly language = 'typescript'
       readonly isolation = 'fake'
@@ -404,12 +401,13 @@ describe('the soft layer', () => {
     const agent = agentWithSession()
     agent.session.append('mode/set', { mode: PLAN_MODE })
     const assembly = await ctx.systemPrompt.assemble({ agent })
-    // ONE visibility rule covers both surfaces: the denied write is absent
-    // from the native wire schemas AND from the SDK declaration.
-    expect(assembly.tools.map(tool => tool.name).sort()).toEqual(['exit_plan_mode', 'read', 'run_code'])
+    // ONE visibility rule covers both surfaces: in plan the exit tool is
+    // present on the wire AND in the SDK, alongside the untouched toolset.
+    expect(assembly.tools.map(tool => tool.name).sort()).toEqual(['exit_plan_mode', 'read', 'run_code', 'write'])
     const sdk = assembly.sections.find(section => section.name === 'tools:sdk')?.text ?? ''
     expect(sdk).toContain('read(args:')
-    expect(sdk).not.toContain('write(args:')
+    expect(sdk).toContain('write(args:')
+    expect(sdk).toContain('exit_plan_mode(args:')
   })
 
   it('default-mode Code Mode SDK is byte-identical to a no-dsh-mode deployment (exit binding hidden)', async () => {
@@ -462,66 +460,37 @@ describe('the hard layer', () => {
     expect(defaulted.isError).toBe(false)
   })
 
-  it('passes allowlisted calls and denies the rest with the plan-mode reason', async () => {
+  it('runs non-shell calls in plan mode untouched — restraint outside the shell is the section, not a gate', async () => {
     const ctx = await setup()
     registerNamedTools(ctx, ['read', 'write'])
     const agent = agentWithSession()
     agent.session.append('mode/set', { mode: PLAN_MODE })
-    const allowed = await execute(ctx, 'read', agent)
-    expect(allowed.isError).toBe(false)
-    const denied = await execute(ctx, 'write', agent)
-    expect(denied.isError).toBe(true)
-    expect(denied.content).toEqual([{
-      type: 'text',
-      text: 'Error: tool "write" is not available in plan mode; continue planning and present your plan with exit_plan_mode when ready',
-    }])
+    const reading = await execute(ctx, 'read', agent)
+    expect(reading.isError).toBe(false)
+    const writing = await execute(ctx, 'write', agent)
+    expect(writing.isError).toBe(false)
   })
 
-  it('denies with the generic reason in a custom mode', async () => {
-    const ctx = await setup({ modes: { review: { section: 's', tools: ['read'] } } })
-    registerNamedTools(ctx, ['write'])
-    const agent = agentWithSession()
-    agent.session.append('mode/set', { mode: 'review' })
-    const denied = await execute(ctx, 'write', agent)
-    expect(denied.isError).toBe(true)
-    expect(denied.content).toEqual([{ type: 'text', text: 'Error: tool "write" is not available in "review" mode' }])
-  })
-
-  it('passes run_code through the gate; bridged sub-calls are judged individually', async () => {
-    const ctx = await setup()
-    // Native mode here, so a stand-in run_code can register without clashing
-    // with the registry's own (Code Mode) instance; the gate exempts by name.
-    registerNamedTools(ctx, ['run_code', 'write'])
-    const agent = agentWithSession()
-    agent.session.append('mode/set', { mode: PLAN_MODE })
-    const wrapper = await execute(ctx, 'run_code', agent)
-    expect(wrapper.isError).toBe(false)
-    // A sub-dispatch re-enters execute() with the same agent — the capability
-    // is what the allowlist judges, exactly like a native call.
-    const sub = await execute(ctx, 'write', agent)
-    expect(sub.isError).toBe(true)
-    expect(sub.content).toEqual([{
-      type: 'text',
-      text: 'Error: tool "write" is not available in plan mode; continue planning and present your plan with exit_plan_mode when ready',
-    }])
-  })
-
-  it('judges by the logged mode only — a pending intent does not gate', async () => {
+  it('judges by the logged mode only — a pending plan intent neither gates nor clamps', async () => {
     const ctx = await setup()
+    await ctx.plugin(FakeSandboxExecutor, { mode: 'workspace-write' })
     registerNamedTools(ctx, ['write'])
     const agent = agentWithSession()
     ctx.modes.set(agent, PLAN_MODE)
     const result = await execute(ctx, 'write', agent)
     expect(result.isError).toBe(false)
+    expect(await ctx.bash.resolveMode(agent.session)).toBe('workspace-write')
   })
 
-  it('treats a dropped folded definition as the default mode (no gate)', async () => {
+  it('treats a dropped folded definition as the default mode (no clamp, no guard)', async () => {
     const ctx = await setup()
+    await ctx.plugin(FakeSandboxExecutor, { mode: 'workspace-write' })
     registerNamedTools(ctx, ['write'])
     const agent = agentWithSession()
     agent.session.append('mode/set', { mode: 'retired' })
     const result = await execute(ctx, 'write', agent)
     expect(result.isError).toBe(false)
+    expect(await ctx.bash.resolveMode(agent.session)).toBe('workspace-write')
   })
 })
 
@@ -597,9 +566,9 @@ describe('exit_plan_mode', () => {
     const { ctx, agent, asked } = await setupWithReview({ selected: ['Approve'] })
     const result = await callExit(ctx, agent)
     expect(result.isError).toBe(false)
-    expect(result.content).toEqual([{ type: 'text', text: 'Plan approved — plan mode exited; the full toolset returns on your next step.' }])
+    expect(result.content).toEqual([{ type: 'text', text: 'Plan approved — plan mode exited; carry out the plan starting with your next step.' }])
     // Boundary-applied, not a direct append: the fold stays plan until the
-    // step's end, so the gate covers any remaining call of the SAME batch.
+    // step's end, so the plan policy covers any remaining call of the SAME batch.
     expect(foldMode(agent.session.events)).toBe(PLAN_MODE)
     expect(ctx.modes.get(agent)).toEqual({ current: PLAN_MODE, pending: DEFAULT_MODE })
     boundary(ctx, agent.session, 'step/end')
@@ -609,22 +578,17 @@ describe('exit_plan_mode', () => {
     expect(asked[0]?.questions[0]?.options?.map(option => option.label)).toEqual(['Approve', 'Keep planning'])
   })
 
-  it('an approved exit cannot smuggle a same-batch call past the gate', async () => {
+  it('an approved exit keeps the plan clamp until the boundary (same-batch policy holds)', async () => {
     const { ctx, agent } = await setupWithReview({ selected: ['Approve'] })
-    registerNamedTools(ctx, ['write'])
+    await ctx.plugin(FakeSandboxExecutor, { mode: 'workspace-write' })
     const approved = await callExit(ctx, agent)
     expect(approved.isError).toBe(false)
-    // The next call of the SAME assistant response (no boundary between):
-    // requested under the plan-shaped header, so the gate must still deny it.
-    const smuggled = await execute(ctx, 'write', agent)
-    expect(smuggled.isError).toBe(true)
-    expect(smuggled.content).toEqual([{
-      type: 'text',
-      text: 'Error: tool "write" is not available in plan mode; continue planning and present your plan with exit_plan_mode when ready',
-    }])
+    // A bash call of the SAME assistant response (no boundary between) was
+    // requested under the plan-shaped header — the read-only clamp must
+    // still hold for it; the boundary flush is what widens the next step.
+    expect(await ctx.bash.resolveMode(agent.session)).toBe('read-only')
     boundary(ctx, agent.session, 'step/end')
-    const next = await execute(ctx, 'write', agent)
-    expect(next.isError).toBe(false)
+    expect(await ctx.bash.resolveMode(agent.session)).toBe('workspace-write')
   })
 
   it('the exit flush narrates nothing — the tool result is the narration', async () => {
@@ -640,7 +604,7 @@ describe('exit_plan_mode', () => {
     const { ctx, agent } = await setupWithReview({ selected: ['Approve'], custom: 'ship it small' })
     const result = await callExit(ctx, agent)
     expect(result.isError).toBe(false)
-    expect(result.content).toEqual([{ type: 'text', text: 'Plan approved — plan mode exited; the full toolset returns on your next step. User note: ship it small' }])
+    expect(result.content).toEqual([{ type: 'text', text: 'Plan approved — plan mode exited; carry out the plan starting with your next step. User note: ship it small' }])
   })
 
   it('keep planning returns the corrective error carrying the feedback verbatim', async () => {
@@ -789,7 +753,7 @@ describe('the access cap (bash/resolve-mode clamp)', () => {
   })
 
   it('is a min, not a replace: a knob narrower than the cap stays', async () => {
-    const ctx = await sandboxSetup('danger-full-access', { modes: { locked: { section: 's', tools: ['bash'], access: 'workspace-write' } } })
+    const ctx = await sandboxSetup('danger-full-access', { modes: { locked: { section: 's', access: 'workspace-write' } } })
     const agent = agentWithSession()
     agent.session.append('mode/set', { mode: 'locked' })
     expect(await ctx.bash.resolveMode(agent.session)).toBe('workspace-write')
@@ -798,7 +762,7 @@ describe('the access cap (bash/resolve-mode clamp)', () => {
   })
 
   it('a mode without access leaves the resolution alone', async () => {
-    const ctx = await sandboxSetup('read-only', { modes: { review: { section: 's', tools: ['bash'] } } })
+    const ctx = await sandboxSetup('read-only', { modes: { review: { section: 's' } } })
     const agent = agentWithSession()
     agent.session.append('mode/set', { mode: 'review' })
     setSandboxMode(agent.session, 'danger-full-access')
@@ -833,7 +797,7 @@ describe('the bash trio under an access cap', () => {
     const agent = agentWithSession()
     agent.session.append('mode/set', { mode: PLAN_MODE })
     const assembly = await ctx.systemPrompt.assemble({ agent })
-    expect(assembly.tools.map(tool => tool.name).sort()).toEqual(['bash', 'bash_kill', 'bash_output', EXIT_PLAN_MODE, 'read'])
+    expect(assembly.tools.map(tool => tool.name).sort()).toEqual(['bash', 'bash_kill', 'bash_output', EXIT_PLAN_MODE, 'read', 'write'])
     for (const name of TRIO) {
       const result = await execute(ctx, name, agent)
       expect(result.isError).toBe(false)
@@ -851,7 +815,7 @@ describe('the bash trio under an access cap', () => {
     expect(denied.isError).toBe(true)
     expect(denied.content).toEqual([{
       type: 'text',
-      text: 'Error: tool "bash" is not available in plan mode; continue planning and present your plan with exit_plan_mode when ready',
+      text: 'Error: tool "bash" is not available in plan mode: its read-only sandbox cap needs a sandboxing bash executor, and none is mounted',
     }])
   })
 
@@ -867,7 +831,7 @@ describe('the bash trio under an access cap', () => {
     expect(denied.isError).toBe(true)
     expect(denied.content).toEqual([{
       type: 'text',
-      text: 'Error: tool "bash_output" is not available in plan mode; continue planning and present your plan with exit_plan_mode when ready',
+      text: 'Error: tool "bash_output" is not available in plan mode: its read-only sandbox cap needs a sandboxing bash executor, and none is mounted',
     }])
   })
 
@@ -899,7 +863,7 @@ describe('the bash trio under an access cap', () => {
   })
 
   it('a mode without access exposes bash regardless of the executor (explicit deployment choice)', async () => {
-    const ctx = await setup({ modes: { shell: { section: 's', tools: ['bash'] } } })
+    const ctx = await setup({ modes: { shell: { section: 's' } } })
     registerNamedTools(ctx, ['bash'])
     const agent = agentWithSession()
     agent.session.append('mode/set', { mode: 'shell' })