Clarify interactive tmux plan-review flow

[axeldelafosse]

Summary

• tell the interactive tmux primary prompt to write PLAN.md, ask the peer for plan review, iterate on the plan, then ask the human to review it before implementing
• tell the interactive tmux peer prompt how to handle a plan-review request
• extend tmux prompt tests to cover both instructions

Verification

• bun test tests/loop/tmux.test.ts
• bun run check

[gemini-code-assist]

Code Review

This pull request introduces a 'plan mode' workflow to the tmux interactive prompts, instructing agents to create, review, and iterate on a PLAN.md file before implementation. The feedback suggests improving the robustness of the associated tests by asserting the full content of the new prompt instructions rather than using fragmented checks.

[gemini-code-assist]

These checks for the primary agent's prompt are a bit fragmented and miss some key parts of the new instruction, such as write PLAN.md first and iterate on PLAN.md. Combining them into a single, more comprehensive assertion will make the test more robust and ensure the entire instruction is present.

Suggested change

	expect(primaryPrompt).toContain("If the human asks for plan mode");
	expect(primaryPrompt).toContain("ask Claude for a plan review");
	expect(primaryPrompt).toContain("ask the human to review the plan");
	expect(primaryPrompt).toContain(
	"If the human asks for plan mode, write PLAN.md first, ask Claude for a plan review, iterate on PLAN.md, then ask the human to review the plan before implementing"
	);

[gemini-code-assist]

This check for the peer agent's prompt is incomplete. It misses important parts of the instruction like suggest concrete fixes and wait for the next request. A more comprehensive assertion would improve the test's coverage and robustness.

Suggested change

	expect(peerPrompt).toContain(
	"If Codex asks for a plan review, review PLAN.md only"
	);
	expect(peerPrompt).toContain(
	"If Codex asks for a plan review, review PLAN.md only, suggest concrete fixes, and wait for the next request"
	);