feat: add debug_issue prompt builder

TASKS.md

@@ -248,6 +248,25 @@ Create `test/prompts/debug-issue.test.js`.
 Requirements:
 - Mirror structure of ask_chatgpt, review-plan, and review-code tests: base composition, debug_issue-specific instructions, optional fields, expectedOutput, input validation, tool guard, full integration.
 
+Status: ✅ Complete
+
+### Task 3.7 - architecture_review prompt builder (NEXT)
+
+Create `src/prompts/architecture-review.js`.
+
+Requirements:
+- Export a `buildArchitectureReviewPrompt(input)` function that returns a tool-specific prompt for the architecture_review MCP tool.
+- Compose with `buildBasePrompt()` — call it internally and append the result with `---` separator.
+- Instruct ChatGPT to review architecture decisions and trade-offs.
+- Look for: local vs cloud trade-offs, simplicity, maintainability, operational risk, vendor lock-in, future extension paths.
+- Support `relevantFiles` and `context` input fields.
+- No other tool prompts yet.
+
+Create `test/prompts/architecture-review.test.js`.
+
+Requirements:
+- Mirror structure of ask_chatgpt, review-plan, review-code, and debug-issue tests: base composition, architecture_review-specific instructions, optional fields, expectedOutput, input validation, tool guard, full integration.
+
 Status: ⬜ Pending
 
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