pi subagents and workflow skill plus HA

pi/.pi/agent/prompts/implement-critical.md

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+---
+description: "Maximum quality pipeline — deep scout, Max planning, Opus plan review, approval gate, Sonnet coding, Opus code review"
+---
+
+Use the subagent tool to implement with maximum quality. This is for high-risk or architecturally significant changes.
+
+## Step 1: Deep scout + Plan + Plan review
+```
+{ chain: [
+  { agent: "deep-scout", task: "Thoroughly investigate all code relevant to: $@" },
+  { agent: "planner", task: "Create a detailed implementation plan for: $@\n\nDeep context:\n\n{previous}" },
+  { agent: "plan-reviewer", task: "Review this plan critically. Verify all file paths, line numbers, and assumptions against the codebase. Check for missing steps, edge cases, and risks.\n\n{previous}" }
+]}
+```
+
+## Step 2: APPROVAL GATE
+
+**STOP. Present the plan and the Opus review to the user.**
+
+Show clearly:
+- The implementation plan (steps, files, risks)
+- Opus's verdict and any issues found
+- Ask: "Approve this plan, or want changes?"
+
+Do NOT proceed until the user explicitly approves.
+If the user requests changes, revise the plan and present again.
+
+## Step 3: Implement (only after approval)
+- Use "coder-claude" (Sonnet 4.6) for the implementation steps
+- For multiple independent steps, run them in parallel using separate coder-claude tasks
+
+## Step 4: Opus review
+Run the "reviewer" agent on all changes.
+
+## Step 5: Fix
+If the reviewer says NEEDS_FIXES, run the "fixer" agent with the review output.
+
+## Step 6: Report
+Summarize everything: what was planned, what was implemented, what was reviewed, what was fixed, and any remaining concerns.