feat: Add templates for epics, product brief, and requirements documentation

- Introduced a comprehensive template for generating epics and stories in Phase 5, including an index and individual epic files.
- Created a product brief template for Phase 2 to summarize product vision, goals, and target users.
- Developed a requirements PRD template for Phase 3, outlining functional and non-functional requirements, along with traceability matrices.

feat: Implement tech debt roles for assessment, execution, planning, scanning, validation, and analysis

- Added roles for tech debt assessment, executor, planner, scanner, validator, and analyst, each with defined phases and processes for managing technical debt.
- Each role includes structured input requirements, processing strategies, and output formats to ensure consistency and clarity in tech debt management.

.claude/skills/team-tech-debt/roles/executor/role.md

@@ -0,0 +1,76 @@
+---
+role: executor
+prefix: TDFIX
+inner_loop: true
+message_types: [state_update]
+---
+
+# Tech Debt Executor
+
+Debt cleanup executor. Apply remediation plan actions in worktree: refactor code, update dependencies, add tests, add documentation. Batch-delegate to CLI tools, self-validate after each batch.
+
+## Phase 2: Load Remediation Plan
+
+| Input | Source | Required |
+|-------|--------|----------|
+| Session path | task description (regex: `session:\s*(.+)`) | Yes |
+| .msg/meta.json | <session>/.msg/meta.json | Yes |
+| Remediation plan | <session>/plan/remediation-plan.json | Yes |
+| Worktree info | meta.json:worktree.path, worktree.branch | Yes |
+| Context accumulator | From prior TDFIX tasks (inner loop) | Yes (inner loop) |
+
+1. Extract session path from task description
+2. Read .msg/meta.json for worktree path and branch
+3. Read remediation-plan.json, extract all actions from plan phases
+4. Group actions by type: refactor, restructure, add-tests, update-deps, add-docs
+5. Split large groups (> 10 items) into sub-batches of 10
+6. For inner loop (fix-verify cycle): load context_accumulator from prior TDFIX tasks, parse review/validation feedback for specific issues
+
+**Batch order**: refactor -> update-deps -> add-tests -> add-docs -> restructure
+
+## Phase 3: Execute Fixes
+
+For each batch, use CLI tool for implementation:
+
+**Worktree constraint**: ALL file operations and commands must execute within worktree path. Use `cd "<worktree-path>" && ...` prefix for all Bash commands.
+
+**Per-batch delegation**:
+
+```bash
+ccw cli -p "PURPOSE: Apply tech debt fixes in batch; success = all items fixed without breaking changes
+TASK: <batch-type-specific-tasks>
+MODE: write
+CONTEXT: @<worktree-path>/**/* | Memory: Remediation plan context
+EXPECTED: Code changes that fix debt items, maintain backward compatibility, pass existing tests
+CONSTRAINTS: Minimal changes only | No new features | No suppressions | Read files before modifying
+Batch type: <refactor|update-deps|add-tests|add-docs|restructure>
+Items: <list-of-items-with-file-paths-and-descriptions>" --tool gemini --mode write --cd "<worktree-path>"
+```
+
+Wait for CLI completion before proceeding to next batch.
+
+**Fix Results Tracking**:
+
+| Field | Description |
+|-------|-------------|
+| items_fixed | Count of successfully fixed items |
+| items_failed | Count of failed items |
+| items_remaining | Remaining items count |
+| batches_completed | Completed batch count |
+| files_modified | Array of modified file paths |
+| errors | Array of error messages |
+
+After each batch, verify file modifications via `git diff --name-only` in worktree.
+
+## Phase 4: Self-Validation
+
+All commands in worktree:
+
+| Check | Command | Pass Criteria |
+|-------|---------|---------------|
+| Syntax | `tsc --noEmit` or `python -m py_compile` | No new errors |
+| Lint | `eslint --no-error-on-unmatched-pattern` | No new errors |
+
+Write `<session>/fixes/fix-log.json` with fix results. Update .msg/meta.json with `fix_results`.
+
+Append to context_accumulator for next TDFIX task (inner loop): files modified, fixes applied, validation results, discovered caveats.