chore: unify and centralize agent configuration in .agent/

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+# Bug Triage & Resolution Guide
+
+This reference provides a structured approach to managing production bugs using the `doot` project's custom scripts.
+
+## 1. Listing Bugs
+Use `./scripts/bugs` to list all currently open bugs from the production database.
+Bugs are stored in the `bugs` table with `id`, `description`, and `created_at`.
+
+## 2. Investigating Logs
+When a bug is reported, always check the production logs first.
+Use `./scripts/logs` with various flags:
+- `scripts/logs -n 200`: View the last 200 lines.
+- `scripts/logs --since "1 hour ago"`: View recent logs.
+- `scripts/logs --grep "error"`: Search for specific error patterns.
+- `scripts/logs -f`: Follow logs in real-time (useful for reproduction).
+
+### Common Error Patterns
+- **Database Locked:** SQLite `database is locked` errors usually indicate concurrent writes or long-running transactions.
+- **Unauthorized:** Check for `401` or `403` status codes in API clients (Todoist, Trello, etc.).
+- **Template Errors:** Look for `template: ...: executing ...: nil pointer evaluating ...` which indicates missing data in the renderer.
+
+## 3. Reproduction
+Before applying a fix, attempt to reproduce the bug locally.
+1. Use `go test ./...` to ensure the current state is stable.
+2. Create a new test case in the relevant `*_test.go` file that specifically triggers the reported bug.
+3. Confirm the test fails.
+
+## 4. Resolution
+Once a fix is implemented and verified locally:
+1. Deploy the fix using `./scripts/deploy`.
+2. Verify the fix in production if possible (e.g., by checking logs).
+3. Use `./scripts/resolve-bug <id>` to mark the bug as resolved in the production database.
+
+## 5. Verification
+After resolving, run `./scripts/bugs` again to ensure it no longer appears in the list.
+Update `SESSION_STATE.md` to reflect the completed bug fix.