test: use portable command in fs policy snapshot

AGENTS.md

@@ -96,7 +96,7 @@ Real-API tests and demos read `DEEPSEEK_API_KEY` (and optional `DEEPSEEK_BASE_UR
 - **Symmetry is usually more correct**: parallel values get parallel form; asymmetry smells of a missed extraction.
 - **Tests document behavior, not golden truth**: a green test pins what the code DOES, not what it SHOULD do. Before preserving a behavior solely for its test, ask whether it is load-bearing; an artifact changes together with its test, with the why in the PR ([worked example](docs/rfc/implemented/simplification/2026-06-19-drop-mutable-session-summary.md)).
 - **RFCs are proposals, not golden truth**: validate its premise against current code before implementing; friction is evidence of over-reach — amend on the way to `implemented/` ([worked example](docs/rfc/implemented/simplification/2026-06-20-public-agent-stop-surface.md)).
-- **Testing policy** — tiers, with-key generosity, real-over-mock, world-verification, real-load-path and published-bin guards: [docs/testing.md](docs/testing.md). A transcript/UX-affecting change needs a snapshot test, or a PR note why none applies.
+- **Testing policy** — [docs/testing.md](docs/testing.md). Transcript/UX changes need snapshots or a PR note. Snapshot fixtures must replay on macOS/Linux; avoid GNU/BSD-only commands (e.g. `sed -i`); fix fixtures, not normalizers.
 - **A tool's ACP render intent is part of its design**, decided up front (`generic`/`terminal`/`diff`, `locations`); presentation methods are pure functions of `args` ([render-intent RFC](docs/rfc/implemented/architecture/2026-07-02-tool-render-intent-union.md), [cookbook](docs/cookbook/adding-a-tool.md)).
 - **A new capability seam, lifecycle shape, or transcript surface names its coverage at every tier (unit, e2e, snapshot) at plan time** and verifies the harness can express it — a gap is scheduled work, not a mid-build surprise.
 - **Merge PRs with merge commits** (`gh pr merge --merge`), never squash/rebase. **Never rewrite a pushed branch**; update a child by merging its parent down. **A review fix lands on the PR that introduced the issue, as a separate commit**, then merges down ([stacked-review guide](docs/cookbook/responding-to-pr-review-on-a-stack.md)).

examples/acp-agent/tests/snapshot-normalize.spec.ts

@@ -42,20 +42,6 @@ describe('normalizeStdout', () => {
     expect(normalizeStdout(raw, ctx)).toContain('{{sessionId}}')
   })
 
-  it('normalizes macOS sed -i stderr for the fs-policy-reject fixture', () => {
-    const raw = JSON.stringify({
-      jsonrpc: '2.0',
-      method: 'session/update',
-      params: {
-        update: {
-          sessionUpdate: 'tool_call_update',
-          content: [{ type: 'content', content: { type: 'text', text: '```console\n[stderr]\nsed: 1: "settings.txt\n": unterminated substitute pattern\n[exit code: 1]\n```' } }],
-        },
-      },
-    })
-    expect(normalizeStdout(raw, ctx)).toContain('```console\\n(no output)\\n```')
-  })
-
   it('leaves notification frames without an id untouched in id-space', () => {
     const raw = JSON.stringify({ jsonrpc: '2.0', method: 'session/update', params: {} })
     const out = normalizeStdout(raw, ctx)
@@ -105,15 +91,6 @@ describe('normalizeSessionLog', () => {
     expect(out).toContain('{{sessionId}}')
   })
 
-  it('normalizes macOS sed -i stderr in persisted tool results', () => {
-    const ev = JSON.stringify({
-      type: 'tool/result', seq: 2, time: 5,
-      data: { content: [{ type: 'text', text: '[stderr]\nsed: 1: "settings.txt\n": unterminated substitute pattern\n[exit code: 1]' }] },
-    })
-    const out = normalizeSessionLog(`${header({})}\n${ev}\n`, ctx)
-    expect(out).toContain('"text":"(no output)"')
-  })
-
   it('zeroes a hook/result durationMs (run-to-run noise) but keeps its decision', () => {
     const ev = JSON.stringify({
       type: 'hook/result', seq: 2, time: 5,

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

@@ -37,11 +37,6 @@ function scrubString(value: string, ctx: NormalizeContext): string {
   out = out.split(ctx.cwd).join(CWD)
   for (const id of ctx.sessionIds) out = out.split(id).join(SESSION_ID)
   out = out.replace(UUID_RE, SESSION_ID)
-  // The fs-policy-reject fixture replays a recorded GNU-sed `sed -i` command.
-  // macOS/BSD sed treats the same argv as an error. The snapshot's behavior is
-  // the policy flow, not platform sed syntax, so normalize this exact stderr to
-  // the Linux no-output result the fixture records.
-  out = out.split('[stderr]\nsed: 1: "settings.txt\n": unterminated substitute pattern\n[exit code: 1]').join('(no output)')
   return out
 }
 

examples/acp-agent/tests/snapshots/fs-policy-reject/session.jsonl

@@ -180,7 +180,7 @@
 {"type":"assistant/chunk","seq":178,"time":1783279386389,"data":{"turn":1,"step":2,"chunk":{"type":"reasoning-delta","index":0,"text":" use"}}}
 {"type":"assistant/chunk","seq":179,"time":1783279386416,"data":{"turn":1,"step":2,"chunk":{"type":"reasoning-delta","index":0,"text":" bash"}}}
 {"type":"assistant/chunk","seq":180,"time":1783279386416,"data":{"turn":1,"step":2,"chunk":{"type":"reasoning-delta","index":0,"text":" with"}}}
-{"type":"assistant/chunk","seq":181,"time":1783279386416,"data":{"turn":1,"step":2,"chunk":{"type":"reasoning-delta","index":0,"text":" sed"}}}
+{"type":"assistant/chunk","seq":181,"time":1783279386416,"data":{"turn":1,"step":2,"chunk":{"type":"reasoning-delta","index":0,"text":" awk"}}}
 {"type":"assistant/chunk","seq":182,"time":1783279386416,"data":{"turn":1,"step":2,"chunk":{"type":"reasoning-delta","index":0,"text":" to"}}}
 {"type":"assistant/chunk","seq":183,"time":1783279386444,"data":{"turn":1,"step":2,"chunk":{"type":"reasoning-delta","index":0,"text":" replace"}}}
 {"type":"assistant/chunk","seq":184,"time":1783279386444,"data":{"turn":1,"step":2,"chunk":{"type":"reasoning-delta","index":0,"text":" \""}}}
@@ -197,47 +197,47 @@
 {"type":"assistant/chunk","seq":195,"time":1783279386528,"data":{"turn":1,"step":2,"chunk":{"type":"reasoning-delta","index":0,"text":"."}}}
 {"type":"assistant/chunk","seq":196,"time":1783279386614,"data":{"turn":1,"step":2,"chunk":{"type":"block-start","index":1,"blockType":"tool-call"}}}
 {"type":"assistant/chunk","seq":197,"time":1783279386615,"data":{"turn":1,"step":2,"chunk":{"type":"tool-call-delta","index":1,"id":"call_00_SvvpTh6bWybYXoO77NHg8535","name":"bash","argumentsDelta":""}}}
-{"type":"assistant/chunk","seq":198,"time":1783279386615,"data":{"turn":1,"step":2,"chunk":{"type":"tool-call-delta","index":1,"id":"call_00_SvvpTh6bWybYXoO77NHg8535","name":"bash","argumentsDelta":"{"}}}
-{"type":"assistant/chunk","seq":199,"time":1783279386615,"data":{"turn":1,"step":2,"chunk":{"type":"tool-call-delta","index":1,"id":"call_00_SvvpTh6bWybYXoO77NHg8535","name":"bash","argumentsDelta":"\""}}}
-{"type":"assistant/chunk","seq":200,"time":1783279386643,"data":{"turn":1,"step":2,"chunk":{"type":"tool-call-delta","index":1,"id":"call_00_SvvpTh6bWybYXoO77NHg8535","name":"bash","argumentsDelta":"command"}}}
-{"type":"assistant/chunk","seq":201,"time":1783279386643,"data":{"turn":1,"step":2,"chunk":{"type":"tool-call-delta","index":1,"id":"call_00_SvvpTh6bWybYXoO77NHg8535","name":"bash","argumentsDelta":"\""}}}
-{"type":"assistant/chunk","seq":202,"time":1783279386643,"data":{"turn":1,"step":2,"chunk":{"type":"tool-call-delta","index":1,"id":"call_00_SvvpTh6bWybYXoO77NHg8535","name":"bash","argumentsDelta":": "}}}
-{"type":"assistant/chunk","seq":203,"time":1783279386643,"data":{"turn":1,"step":2,"chunk":{"type":"tool-call-delta","index":1,"id":"call_00_SvvpTh6bWybYXoO77NHg8535","name":"bash","argumentsDelta":"\""}}}
-{"type":"assistant/chunk","seq":204,"time":1783279386671,"data":{"turn":1,"step":2,"chunk":{"type":"tool-call-delta","index":1,"id":"call_00_SvvpTh6bWybYXoO77NHg8535","name":"bash","argumentsDelta":"sed"}}}
-{"type":"assistant/chunk","seq":205,"time":1783279386671,"data":{"turn":1,"step":2,"chunk":{"type":"tool-call-delta","index":1,"id":"call_00_SvvpTh6bWybYXoO77NHg8535","name":"bash","argumentsDelta":" -"}}}
-{"type":"assistant/chunk","seq":206,"time":1783279386671,"data":{"turn":1,"step":2,"chunk":{"type":"tool-call-delta","index":1,"id":"call_00_SvvpTh6bWybYXoO77NHg8535","name":"bash","argumentsDelta":"i"}}}
-{"type":"assistant/chunk","seq":207,"time":1783279386671,"data":{"turn":1,"step":2,"chunk":{"type":"tool-call-delta","index":1,"id":"call_00_SvvpTh6bWybYXoO77NHg8535","name":"bash","argumentsDelta":" '"}}}
-{"type":"assistant/chunk","seq":208,"time":1783279386671,"data":{"turn":1,"step":2,"chunk":{"type":"tool-call-delta","index":1,"id":"call_00_SvvpTh6bWybYXoO77NHg8535","name":"bash","argumentsDelta":"s"}}}
-{"type":"assistant/chunk","seq":209,"time":1783279386671,"data":{"turn":1,"step":2,"chunk":{"type":"tool-call-delta","index":1,"id":"call_00_SvvpTh6bWybYXoO77NHg8535","name":"bash","argumentsDelta":"/"}}}
-{"type":"assistant/chunk","seq":210,"time":1783279386699,"data":{"turn":1,"step":2,"chunk":{"type":"tool-call-delta","index":1,"id":"call_00_SvvpTh6bWybYXoO77NHg8535","name":"bash","argumentsDelta":"blue"}}}
-{"type":"assistant/chunk","seq":211,"time":1783279386700,"data":{"turn":1,"step":2,"chunk":{"type":"tool-call-delta","index":1,"id":"call_00_SvvpTh6bWybYXoO77NHg8535","name":"bash","argumentsDelta":"/g"}}}
-{"type":"assistant/chunk","seq":212,"time":1783279386700,"data":{"turn":1,"step":2,"chunk":{"type":"tool-call-delta","index":1,"id":"call_00_SvvpTh6bWybYXoO77NHg8535","name":"bash","argumentsDelta":"reen"}}}
-{"type":"assistant/chunk","seq":213,"time":1783279386700,"data":{"turn":1,"step":2,"chunk":{"type":"tool-call-delta","index":1,"id":"call_00_SvvpTh6bWybYXoO77NHg8535","name":"bash","argumentsDelta":"/g"}}}
-{"type":"assistant/chunk","seq":214,"time":1783279386700,"data":{"turn":1,"step":2,"chunk":{"type":"tool-call-delta","index":1,"id":"call_00_SvvpTh6bWybYXoO77NHg8535","name":"bash","argumentsDelta":"'"}}}
-{"type":"assistant/chunk","seq":215,"time":1783279386700,"data":{"turn":1,"step":2,"chunk":{"type":"tool-call-delta","index":1,"id":"call_00_SvvpTh6bWybYXoO77NHg8535","name":"bash","argumentsDelta":" settings"}}}
-{"type":"assistant/chunk","seq":216,"time":1783279386726,"data":{"turn":1,"step":2,"chunk":{"type":"tool-call-delta","index":1,"id":"call_00_SvvpTh6bWybYXoO77NHg8535","name":"bash","argumentsDelta":".txt"}}}
-{"type":"assistant/chunk","seq":217,"time":1783279386727,"data":{"turn":1,"step":2,"chunk":{"type":"tool-call-delta","index":1,"id":"call_00_SvvpTh6bWybYXoO77NHg8535","name":"bash","argumentsDelta":"\""}}}
-{"type":"assistant/chunk","seq":218,"time":1783279386754,"data":{"turn":1,"step":2,"chunk":{"type":"tool-call-delta","index":1,"id":"call_00_SvvpTh6bWybYXoO77NHg8535","name":"bash","argumentsDelta":", "}}}
-{"type":"assistant/chunk","seq":219,"time":1783279386754,"data":{"turn":1,"step":2,"chunk":{"type":"tool-call-delta","index":1,"id":"call_00_SvvpTh6bWybYXoO77NHg8535","name":"bash","argumentsDelta":"\""}}}
-{"type":"assistant/chunk","seq":220,"time":1783279386754,"data":{"turn":1,"step":2,"chunk":{"type":"tool-call-delta","index":1,"id":"call_00_SvvpTh6bWybYXoO77NHg8535","name":"bash","argumentsDelta":"description"}}}
-{"type":"assistant/chunk","seq":221,"time":1783279386754,"data":{"turn":1,"step":2,"chunk":{"type":"tool-call-delta","index":1,"id":"call_00_SvvpTh6bWybYXoO77NHg8535","name":"bash","argumentsDelta":"\""}}}
-{"type":"assistant/chunk","seq":222,"time":1783279386781,"data":{"turn":1,"step":2,"chunk":{"type":"tool-call-delta","index":1,"id":"call_00_SvvpTh6bWybYXoO77NHg8535","name":"bash","argumentsDelta":": "}}}
-{"type":"assistant/chunk","seq":223,"time":1783279386781,"data":{"turn":1,"step":2,"chunk":{"type":"tool-call-delta","index":1,"id":"call_00_SvvpTh6bWybYXoO77NHg8535","name":"bash","argumentsDelta":"\""}}}
-{"type":"assistant/chunk","seq":224,"time":1783279386781,"data":{"turn":1,"step":2,"chunk":{"type":"tool-call-delta","index":1,"id":"call_00_SvvpTh6bWybYXoO77NHg8535","name":"bash","argumentsDelta":"Replace"}}}
-{"type":"assistant/chunk","seq":225,"time":1783279386781,"data":{"turn":1,"step":2,"chunk":{"type":"tool-call-delta","index":1,"id":"call_00_SvvpTh6bWybYXoO77NHg8535","name":"bash","argumentsDelta":" blue"}}}
-{"type":"assistant/chunk","seq":226,"time":1783279386809,"data":{"turn":1,"step":2,"chunk":{"type":"tool-call-delta","index":1,"id":"call_00_SvvpTh6bWybYXoO77NHg8535","name":"bash","argumentsDelta":" with"}}}
-{"type":"assistant/chunk","seq":227,"time":1783279386809,"data":{"turn":1,"step":2,"chunk":{"type":"tool-call-delta","index":1,"id":"call_00_SvvpTh6bWybYXoO77NHg8535","name":"bash","argumentsDelta":" green"}}}
-{"type":"assistant/chunk","seq":228,"time":1783279386809,"data":{"turn":1,"step":2,"chunk":{"type":"tool-call-delta","index":1,"id":"call_00_SvvpTh6bWybYXoO77NHg8535","name":"bash","argumentsDelta":" in"}}}
-{"type":"assistant/chunk","seq":229,"time":1783279386809,"data":{"turn":1,"step":2,"chunk":{"type":"tool-call-delta","index":1,"id":"call_00_SvvpTh6bWybYXoO77NHg8535","name":"bash","argumentsDelta":" settings"}}}
-{"type":"assistant/chunk","seq":230,"time":1783279386809,"data":{"turn":1,"step":2,"chunk":{"type":"tool-call-delta","index":1,"id":"call_00_SvvpTh6bWybYXoO77NHg8535","name":"bash","argumentsDelta":".txt"}}}
-{"type":"assistant/chunk","seq":231,"time":1783279386837,"data":{"turn":1,"step":2,"chunk":{"type":"tool-call-delta","index":1,"id":"call_00_SvvpTh6bWybYXoO77NHg8535","name":"bash","argumentsDelta":"\""}}}
-{"type":"assistant/chunk","seq":232,"time":1783279386838,"data":{"turn":1,"step":2,"chunk":{"type":"tool-call-delta","index":1,"id":"call_00_SvvpTh6bWybYXoO77NHg8535","name":"bash","argumentsDelta":"}"}}}
-{"type":"assistant/chunk","seq":233,"time":1783279386896,"data":{"turn":1,"step":2,"chunk":{"type":"block-end","index":0,"block":{"type":"reasoning","text":"The edit tool requires reading the file first due to the default fs-policy. However, the user explicitly instructed me NOT to use the read tool. I need to follow the user's instructions. The edit tool returned an error saying it requires reading the file first. I cannot comply with the user's request to not read the file because the tool enforces it. Let me try a different approach - maybe I can use subagent to do this, or use bash to do the replacement. Let me use bash with sed to replace \"blue\" with \"green\" without reading the file."}}}}
-{"type":"assistant/chunk","seq":234,"time":1783279386896,"data":{"turn":1,"step":2,"chunk":{"type":"block-end","index":1,"block":{"type":"tool-call","id":"call_00_SvvpTh6bWybYXoO77NHg8535","name":"bash","arguments":"{\"command\": \"sed -i 's/blue/green/g' settings.txt\", \"description\": \"Replace blue with green in settings.txt\"}"}}}}
+{"type":"assistant/chunk","seq":198,"time":1783279386615,"data":{"turn":1,"step":2,"chunk":{"type":"tool-call-delta","index":1,"id":"call_00_SvvpTh6bWybYXoO77NHg8535","name":"bash","argumentsDelta":"{\"com"}}}
+{"type":"assistant/chunk","seq":199,"time":1783279386615,"data":{"turn":1,"step":2,"chunk":{"type":"tool-call-delta","index":1,"id":"call_00_SvvpTh6bWybYXoO77NHg8535","name":"bash","argumentsDelta":"mand\""}}}
+{"type":"assistant/chunk","seq":200,"time":1783279386643,"data":{"turn":1,"step":2,"chunk":{"type":"tool-call-delta","index":1,"id":"call_00_SvvpTh6bWybYXoO77NHg8535","name":"bash","argumentsDelta":":\"awk"}}}
+{"type":"assistant/chunk","seq":201,"time":1783279386643,"data":{"turn":1,"step":2,"chunk":{"type":"tool-call-delta","index":1,"id":"call_00_SvvpTh6bWybYXoO77NHg8535","name":"bash","argumentsDelta":" '{gs"}}}
+{"type":"assistant/chunk","seq":202,"time":1783279386643,"data":{"turn":1,"step":2,"chunk":{"type":"tool-call-delta","index":1,"id":"call_00_SvvpTh6bWybYXoO77NHg8535","name":"bash","argumentsDelta":"ub(/b"}}}
+{"type":"assistant/chunk","seq":203,"time":1783279386643,"data":{"turn":1,"step":2,"chunk":{"type":"tool-call-delta","index":1,"id":"call_00_SvvpTh6bWybYXoO77NHg8535","name":"bash","argumentsDelta":"lue/,"}}}
+{"type":"assistant/chunk","seq":204,"time":1783279386671,"data":{"turn":1,"step":2,"chunk":{"type":"tool-call-delta","index":1,"id":"call_00_SvvpTh6bWybYXoO77NHg8535","name":"bash","argumentsDelta":"\\\"gre"}}}
+{"type":"assistant/chunk","seq":205,"time":1783279386671,"data":{"turn":1,"step":2,"chunk":{"type":"tool-call-delta","index":1,"id":"call_00_SvvpTh6bWybYXoO77NHg8535","name":"bash","argumentsDelta":"en\\\")"}}}
+{"type":"assistant/chunk","seq":206,"time":1783279386671,"data":{"turn":1,"step":2,"chunk":{"type":"tool-call-delta","index":1,"id":"call_00_SvvpTh6bWybYXoO77NHg8535","name":"bash","argumentsDelta":"}1' s"}}}
+{"type":"assistant/chunk","seq":207,"time":1783279386671,"data":{"turn":1,"step":2,"chunk":{"type":"tool-call-delta","index":1,"id":"call_00_SvvpTh6bWybYXoO77NHg8535","name":"bash","argumentsDelta":"ettin"}}}
+{"type":"assistant/chunk","seq":208,"time":1783279386671,"data":{"turn":1,"step":2,"chunk":{"type":"tool-call-delta","index":1,"id":"call_00_SvvpTh6bWybYXoO77NHg8535","name":"bash","argumentsDelta":"gs.tx"}}}
+{"type":"assistant/chunk","seq":209,"time":1783279386671,"data":{"turn":1,"step":2,"chunk":{"type":"tool-call-delta","index":1,"id":"call_00_SvvpTh6bWybYXoO77NHg8535","name":"bash","argumentsDelta":"t > s"}}}
+{"type":"assistant/chunk","seq":210,"time":1783279386699,"data":{"turn":1,"step":2,"chunk":{"type":"tool-call-delta","index":1,"id":"call_00_SvvpTh6bWybYXoO77NHg8535","name":"bash","argumentsDelta":"ettin"}}}
+{"type":"assistant/chunk","seq":211,"time":1783279386700,"data":{"turn":1,"step":2,"chunk":{"type":"tool-call-delta","index":1,"id":"call_00_SvvpTh6bWybYXoO77NHg8535","name":"bash","argumentsDelta":"gs.tm"}}}
+{"type":"assistant/chunk","seq":212,"time":1783279386700,"data":{"turn":1,"step":2,"chunk":{"type":"tool-call-delta","index":1,"id":"call_00_SvvpTh6bWybYXoO77NHg8535","name":"bash","argumentsDelta":"p && "}}}
+{"type":"assistant/chunk","seq":213,"time":1783279386700,"data":{"turn":1,"step":2,"chunk":{"type":"tool-call-delta","index":1,"id":"call_00_SvvpTh6bWybYXoO77NHg8535","name":"bash","argumentsDelta":"mv se"}}}
+{"type":"assistant/chunk","seq":214,"time":1783279386700,"data":{"turn":1,"step":2,"chunk":{"type":"tool-call-delta","index":1,"id":"call_00_SvvpTh6bWybYXoO77NHg8535","name":"bash","argumentsDelta":"tting"}}}
+{"type":"assistant/chunk","seq":215,"time":1783279386700,"data":{"turn":1,"step":2,"chunk":{"type":"tool-call-delta","index":1,"id":"call_00_SvvpTh6bWybYXoO77NHg8535","name":"bash","argumentsDelta":"s.tmp"}}}
+{"type":"assistant/chunk","seq":216,"time":1783279386726,"data":{"turn":1,"step":2,"chunk":{"type":"tool-call-delta","index":1,"id":"call_00_SvvpTh6bWybYXoO77NHg8535","name":"bash","argumentsDelta":" sett"}}}
+{"type":"assistant/chunk","seq":217,"time":1783279386727,"data":{"turn":1,"step":2,"chunk":{"type":"tool-call-delta","index":1,"id":"call_00_SvvpTh6bWybYXoO77NHg8535","name":"bash","argumentsDelta":"ings."}}}
+{"type":"assistant/chunk","seq":218,"time":1783279386754,"data":{"turn":1,"step":2,"chunk":{"type":"tool-call-delta","index":1,"id":"call_00_SvvpTh6bWybYXoO77NHg8535","name":"bash","argumentsDelta":"txt\","}}}
+{"type":"assistant/chunk","seq":219,"time":1783279386754,"data":{"turn":1,"step":2,"chunk":{"type":"tool-call-delta","index":1,"id":"call_00_SvvpTh6bWybYXoO77NHg8535","name":"bash","argumentsDelta":"\"des"}}}
+{"type":"assistant/chunk","seq":220,"time":1783279386754,"data":{"turn":1,"step":2,"chunk":{"type":"tool-call-delta","index":1,"id":"call_00_SvvpTh6bWybYXoO77NHg8535","name":"bash","argumentsDelta":"crip"}}}
+{"type":"assistant/chunk","seq":221,"time":1783279386754,"data":{"turn":1,"step":2,"chunk":{"type":"tool-call-delta","index":1,"id":"call_00_SvvpTh6bWybYXoO77NHg8535","name":"bash","argumentsDelta":"tion"}}}
+{"type":"assistant/chunk","seq":222,"time":1783279386781,"data":{"turn":1,"step":2,"chunk":{"type":"tool-call-delta","index":1,"id":"call_00_SvvpTh6bWybYXoO77NHg8535","name":"bash","argumentsDelta":"\":\"R"}}}
+{"type":"assistant/chunk","seq":223,"time":1783279386781,"data":{"turn":1,"step":2,"chunk":{"type":"tool-call-delta","index":1,"id":"call_00_SvvpTh6bWybYXoO77NHg8535","name":"bash","argumentsDelta":"epla"}}}
+{"type":"assistant/chunk","seq":224,"time":1783279386781,"data":{"turn":1,"step":2,"chunk":{"type":"tool-call-delta","index":1,"id":"call_00_SvvpTh6bWybYXoO77NHg8535","name":"bash","argumentsDelta":"ce b"}}}
+{"type":"assistant/chunk","seq":225,"time":1783279386781,"data":{"turn":1,"step":2,"chunk":{"type":"tool-call-delta","index":1,"id":"call_00_SvvpTh6bWybYXoO77NHg8535","name":"bash","argumentsDelta":"lue "}}}
+{"type":"assistant/chunk","seq":226,"time":1783279386809,"data":{"turn":1,"step":2,"chunk":{"type":"tool-call-delta","index":1,"id":"call_00_SvvpTh6bWybYXoO77NHg8535","name":"bash","argumentsDelta":"with"}}}
+{"type":"assistant/chunk","seq":227,"time":1783279386809,"data":{"turn":1,"step":2,"chunk":{"type":"tool-call-delta","index":1,"id":"call_00_SvvpTh6bWybYXoO77NHg8535","name":"bash","argumentsDelta":" gre"}}}
+{"type":"assistant/chunk","seq":228,"time":1783279386809,"data":{"turn":1,"step":2,"chunk":{"type":"tool-call-delta","index":1,"id":"call_00_SvvpTh6bWybYXoO77NHg8535","name":"bash","argumentsDelta":"en i"}}}
+{"type":"assistant/chunk","seq":229,"time":1783279386809,"data":{"turn":1,"step":2,"chunk":{"type":"tool-call-delta","index":1,"id":"call_00_SvvpTh6bWybYXoO77NHg8535","name":"bash","argumentsDelta":"n se"}}}
+{"type":"assistant/chunk","seq":230,"time":1783279386809,"data":{"turn":1,"step":2,"chunk":{"type":"tool-call-delta","index":1,"id":"call_00_SvvpTh6bWybYXoO77NHg8535","name":"bash","argumentsDelta":"ttin"}}}
+{"type":"assistant/chunk","seq":231,"time":1783279386837,"data":{"turn":1,"step":2,"chunk":{"type":"tool-call-delta","index":1,"id":"call_00_SvvpTh6bWybYXoO77NHg8535","name":"bash","argumentsDelta":"gs.t"}}}
+{"type":"assistant/chunk","seq":232,"time":1783279386838,"data":{"turn":1,"step":2,"chunk":{"type":"tool-call-delta","index":1,"id":"call_00_SvvpTh6bWybYXoO77NHg8535","name":"bash","argumentsDelta":"xt\"}"}}}
+{"type":"assistant/chunk","seq":233,"time":1783279386896,"data":{"turn":1,"step":2,"chunk":{"type":"block-end","index":0,"block":{"type":"reasoning","text":"The edit tool requires reading the file first due to the default fs-policy. However, the user explicitly instructed me NOT to use the read tool. I need to follow the user's instructions. The edit tool returned an error saying it requires reading the file first. I cannot comply with the user's request to not read the file because the tool enforces it. Let me try a different approach - maybe I can use subagent to do this, or use bash to do the replacement. Let me use bash with awk to replace \"blue\" with \"green\" without reading the file."}}}}
+{"type":"assistant/chunk","seq":234,"time":1783279386896,"data":{"turn":1,"step":2,"chunk":{"type":"block-end","index":1,"block":{"type":"tool-call","id":"call_00_SvvpTh6bWybYXoO77NHg8535","name":"bash","arguments":"{\"command\":\"awk '{gsub(/blue/,\\\"green\\\")}1' settings.txt > settings.tmp && mv settings.tmp settings.txt\",\"description\":\"Replace blue with green in settings.txt\"}"}}}}
 {"type":"assistant/chunk","seq":235,"time":1783279386896,"data":{"turn":1,"step":2,"chunk":{"type":"usage","usage":{"inputTokens":227,"outputTokens":195,"cacheReadTokens":2048,"reasoningTokens":118}}}}
 {"type":"assistant/chunk","seq":236,"time":1783279386896,"data":{"turn":1,"step":2,"chunk":{"type":"finish","reason":{"kind":"tool-calls"}}}}
-{"type":"assistant/message","seq":237,"time":1783279386897,"data":{"turn":1,"step":2,"content":[{"type":"reasoning","text":"The edit tool requires reading the file first due to the default fs-policy. However, the user explicitly instructed me NOT to use the read tool. I need to follow the user's instructions. The edit tool returned an error saying it requires reading the file first. I cannot comply with the user's request to not read the file because the tool enforces it. Let me try a different approach - maybe I can use subagent to do this, or use bash to do the replacement. Let me use bash with sed to replace \"blue\" with \"green\" without reading the file."},{"type":"tool-call","id":"call_00_SvvpTh6bWybYXoO77NHg8535","name":"bash","arguments":"{\"command\": \"sed -i 's/blue/green/g' settings.txt\", \"description\": \"Replace blue with green in settings.txt\"}"}],"usage":{"inputTokens":227,"outputTokens":195,"cacheReadTokens":2048,"reasoningTokens":118}},"sourceEventSeqs":[77,78,79,80,81,82,83,84,85,86,87,88,89,90,91,92,93,94,95,96,97,98,99,100,101,102,103,104,105,106,107,108,109,110,111,112,113,114,115,116,117,118,119,120,121,122,123,124,125,126,127,128,129,130,131,132,133,134,135,136,137,138,139,140,141,142,143,144,145,146,147,148,149,150,151,152,153,154,155,156,157,158,159,160,161,162,163,164,165,166,167,168,169,170,171,172,173,174,175,176,177,178,179,180,181,182,183,184,185,186,187,188,189,190,191,192,193,194,195,196,197,198,199,200,201,202,203,204,205,206,207,208,209,210,211,212,213,214,215,216,217,218,219,220,221,222,223,224,225,226,227,228,229,230,231,232,233,234,235,236],"surfaceOp":"append"}
-{"type":"tool/call","seq":238,"time":1783279386897,"data":{"turn":1,"step":2,"callId":"call_00_SvvpTh6bWybYXoO77NHg8535","name":"bash","arguments":"{\"command\": \"sed -i 's/blue/green/g' settings.txt\", \"description\": \"Replace blue with green in settings.txt\"}"}}
+{"type":"assistant/message","seq":237,"time":1783279386897,"data":{"turn":1,"step":2,"content":[{"type":"reasoning","text":"The edit tool requires reading the file first due to the default fs-policy. However, the user explicitly instructed me NOT to use the read tool. I need to follow the user's instructions. The edit tool returned an error saying it requires reading the file first. I cannot comply with the user's request to not read the file because the tool enforces it. Let me try a different approach - maybe I can use subagent to do this, or use bash to do the replacement. Let me use bash with awk to replace \"blue\" with \"green\" without reading the file."},{"type":"tool-call","id":"call_00_SvvpTh6bWybYXoO77NHg8535","name":"bash","arguments":"{\"command\":\"awk '{gsub(/blue/,\\\"green\\\")}1' settings.txt > settings.tmp && mv settings.tmp settings.txt\",\"description\":\"Replace blue with green in settings.txt\"}"}],"usage":{"inputTokens":227,"outputTokens":195,"cacheReadTokens":2048,"reasoningTokens":118}},"sourceEventSeqs":[77,78,79,80,81,82,83,84,85,86,87,88,89,90,91,92,93,94,95,96,97,98,99,100,101,102,103,104,105,106,107,108,109,110,111,112,113,114,115,116,117,118,119,120,121,122,123,124,125,126,127,128,129,130,131,132,133,134,135,136,137,138,139,140,141,142,143,144,145,146,147,148,149,150,151,152,153,154,155,156,157,158,159,160,161,162,163,164,165,166,167,168,169,170,171,172,173,174,175,176,177,178,179,180,181,182,183,184,185,186,187,188,189,190,191,192,193,194,195,196,197,198,199,200,201,202,203,204,205,206,207,208,209,210,211,212,213,214,215,216,217,218,219,220,221,222,223,224,225,226,227,228,229,230,231,232,233,234,235,236],"surfaceOp":"append"}
+{"type":"tool/call","seq":238,"time":1783279386897,"data":{"turn":1,"step":2,"callId":"call_00_SvvpTh6bWybYXoO77NHg8535","name":"bash","arguments":"{\"command\":\"awk '{gsub(/blue/,\\\"green\\\")}1' settings.txt > settings.tmp && mv settings.tmp settings.txt\",\"description\":\"Replace blue with green in settings.txt\"}"}}
 {"type":"tool/result","seq":239,"time":1783279386915,"data":{"turn":1,"step":2,"callId":"call_00_SvvpTh6bWybYXoO77NHg8535","content":[{"type":"text","text":"(no output)"}],"isError":false},"sourceEventSeqs":[238],"surfaceOp":"append"}
 {"type":"step/end","seq":240,"time":1783279386916,"data":{"turn":1,"step":2}}
 {"type":"step/start","seq":241,"time":1783279386916,"data":{"turn":1,"step":3}}

examples/acp-agent/tests/snapshots/fs-policy-reject/stdout.golden.jsonl

@@ -137,7 +137,7 @@
 {"jsonrpc":"2.0","method":"session/update","params":{"sessionId":"{{sessionId}}","update":{"sessionUpdate":"agent_thought_chunk","content":{"type":"text","text":" use"}}}}
 {"jsonrpc":"2.0","method":"session/update","params":{"sessionId":"{{sessionId}}","update":{"sessionUpdate":"agent_thought_chunk","content":{"type":"text","text":" bash"}}}}
 {"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":" sed"}}}}
+{"jsonrpc":"2.0","method":"session/update","params":{"sessionId":"{{sessionId}}","update":{"sessionUpdate":"agent_thought_chunk","content":{"type":"text","text":" awk"}}}}
 {"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":" replace"}}}}
 {"jsonrpc":"2.0","method":"session/update","params":{"sessionId":"{{sessionId}}","update":{"sessionUpdate":"agent_thought_chunk","content":{"type":"text","text":" \""}}}}
@@ -152,7 +152,7 @@
 {"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":"."}}}}
-{"jsonrpc":"2.0","method":"session/update","params":{"sessionId":"{{sessionId}}","update":{"sessionUpdate":"tool_call","toolCallId":"call_00_SvvpTh6bWybYXoO77NHg8535","title":"sed -i 's/blue/green/g' settings.txt","kind":"execute","status":"in_progress","rawInput":"sed -i 's/blue/green/g' settings.txt","content":[{"type":"content","content":{"type":"text","text":"Replace blue with green in settings.txt"}}]}}}
+{"jsonrpc":"2.0","method":"session/update","params":{"sessionId":"{{sessionId}}","update":{"sessionUpdate":"tool_call","toolCallId":"call_00_SvvpTh6bWybYXoO77NHg8535","title":"awk '{gsub(/blue/,\"green\")}1' settings.txt > settings.tmp && mv settings.tmp settings.txt","kind":"execute","status":"in_progress","rawInput":"awk '{gsub(/blue/,\"green\")}1' settings.txt > settings.tmp && mv settings.tmp settings.txt","content":[{"type":"content","content":{"type":"text","text":"Replace blue with green in settings.txt"}}]}}}
 {"jsonrpc":"2.0","method":"session/update","params":{"sessionId":"{{sessionId}}","update":{"sessionUpdate":"tool_call_update","toolCallId":"call_00_SvvpTh6bWybYXoO77NHg8535","status":"completed","content":[{"type":"content","content":{"type":"text","text":"```console\n(no output)\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":" bash"}}}}