v2.5.29 — AGY workspace fix + heading-only plans + quick-unblock hint

What's new in v2.5.29

Fixes the AGY false "Planning Gate Blocked" deadlock + accepts heading-only plans + quick-unblock hint.

🐛 Fix: AGY plugin-hook workspace path mismatch (the real deadlock)

AGY runs plugin hooks with cwd = the plugin directory, not the project root — so the planning gate looked for .agents/plan/current.md in the wrong place and blocked every source edit even with a valid plan on disk.

• matcha-agy-hooks.js now reads event.workspacePaths (AGY sends it in every hook event — confirmed from AGY's official hooks.md) and passes it as the workspace root.
• planning-gate.js resolves intensity + plan path from that cwd instead of process.cwd().
• AGY's Create tool now maps to write_to_file (plan writes via Create stay exempt, source writes stay gated).

🐛 Fix: heading-only plans no longer rejected

validateMarkdownPlan required a colon (**Problem:**) — the field report found valid heading-style plans (## Problem on its own line) were rejected. Both styles now work:

• ## Problem\n<text> (heading, no colon) ✅
• ## Problem: <text> (heading + colon) ✅
• - **Problem:** <text> (bullet, existing) ✅

⛔ DX: quick-unblock hint in deny messages

Both deny messages (no-plan + invalid-plan) now tell the agent exactly what to do:

✅ Writing to .agents/plan/current.md is ALWAYS allowed — create the plan there now via Edit/WriteFile.
💡 Run /matcha:intensity observe to bypass the gate (switch back with /matcha:intensity enforce).

✅ Validation

• 602/602 tests pass (8 new regression tests) · copies consistent across all providers (Claude Code, opencode, AGY, universal)
• All 6 agents remain pure subagents everywhere · commands + MCP config verified on every provider

📝 Full field-report verdict (AGY v2.5.27 evaluation)

• 1.1 workspace mismatch → fixed here (CRITICAL)
• 1.2 strict parser → fixed here (heading-only now valid)
• 1.3 post-PASS block on git commit/bun test → already safe (simple-task auto-skip, verified)
• 2.1 cleaner read-only → not applicable (cleaner already has edit: allow, verified)
• 2.2 subagent auto-pass metadata → rejected by design (would weaken the gate)
• 3.1 auto-inject trivial plan → rejected by design (fast-path already exists)
• 3.2 better error message → done (hint + always-allowed note)