codex: clarify subagent tool mapping in bootstrap

.codex/superpowers-bootstrap.md

@@ -9,7 +9,8 @@ You have superpowers.
 **Tool Mapping for Codex:**
 When skills reference tools you don't have, substitute your equivalent tools:
 - `TodoWrite` → `update_plan` (your planning/task tracking tool)
-- `Task` tool with subagents → Tell the user that subagents aren't available in Codex yet and you'll do the work the subagent would do
+- `Task` tool with subagents → Use Codex collab `spawn_agent` + `wait` when available; if collab is disabled, state that and proceed sequentially
+- `Subagent` / `Agent` tool mentions → Map to `spawn_agent` (collab) or sequential fallback when collab is disabled
 - `Skill` tool → `~/.codex/superpowers/.codex/superpowers-codex use-skill` command (already available)
 - `Read`, `Write`, `Edit`, `Bash` → Use your native tools with similar functions
 
@@ -30,4 +31,4 @@ When skills reference tools you don't have, substitute your equivalent tools:
 - Personal skills: ~/.codex/skills/ (override superpowers when names match)
 
 IF A SKILL APPLIES TO YOUR TASK, YOU DO NOT HAVE A CHOICE. YOU MUST USE IT.
-</EXTREMELY_IMPORTANT>
+</EXTREMELY_IMPORTANT>

docs/README.codex.md

@@ -107,7 +107,8 @@ The Codex implementation uses the shared `skills-core` module (ES module format)
 Skills written for Claude Code are adapted for Codex with these mappings:
 
 - `TodoWrite` → `update_plan`
-- `Task` with subagents → Tell user subagents aren't available, do work directly
+- `Task` with subagents → Use collab `spawn_agent` + `wait` when available; if collab is disabled, say so and proceed sequentially
+- `Subagent` / `Agent` tool mentions → Map to `spawn_agent` (collab) or sequential fallback when collab is disabled
 - `Skill` tool → `~/.codex/superpowers/.codex/superpowers-codex use-skill`
 - File operations → Native Codex tools