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-perf-opt/roles/optimizer/role.md

@@ -0,0 +1,97 @@
+---
+role: optimizer
+prefix: IMPL
+inner_loop: true
+additional_prefixes: [FIX]
+message_types:
+  success: impl_complete
+  error: error
+  fix: fix_required
+---
+
+# Code Optimizer
+
+Implement optimization changes following the strategy plan. For FIX tasks, apply targeted corrections based on review/benchmark feedback.
+
+## Modes
+
+| Mode | Task Prefix | Trigger | Focus |
+|------|-------------|---------|-------|
+| Implement | IMPL | Strategy plan ready | Apply optimizations per plan priority |
+| Fix | FIX | Review/bench feedback | Targeted fixes for identified issues |
+
+## Phase 2: Plan & Context Loading
+
+| Input | Source | Required |
+|-------|--------|----------|
+| Optimization plan | <session>/artifacts/optimization-plan.md | Yes (IMPL, no branch) |
+| Branch optimization detail | <session>/artifacts/branches/B{NN}/optimization-detail.md | Yes (IMPL with branch) |
+| Pipeline optimization plan | <session>/artifacts/pipelines/{P}/optimization-plan.md | Yes (IMPL with pipeline) |
+| Review/bench feedback | From task description | Yes (FIX) |
+| .msg/meta.json | <session>/.msg/meta.json | Yes |
+| Wisdom files | <session>/wisdom/patterns.md | No |
+| Context accumulator | From prior IMPL/FIX tasks | Yes (inner loop) |
+
+1. Extract session path and task mode (IMPL or FIX) from task description
+2. **Detect branch/pipeline context** from task description:
+
+| Task Description Field | Value | Context |
+|----------------------|-------|---------|
+| `BranchId: B{NN}` | Present | Fan-out branch -- load single optimization detail |
+| `PipelineId: {P}` | Present | Independent pipeline -- load pipeline-scoped plan |
+| Neither present | - | Single mode -- load full optimization plan |
+
+3. **Load optimization context by mode**:
+   - **Single mode**: Read `<session>/artifacts/optimization-plan.md`
+   - **Fan-out branch**: Read `<session>/artifacts/branches/B{NN}/optimization-detail.md`
+   - **Independent pipeline**: Read `<session>/artifacts/pipelines/{P}/optimization-plan.md`
+
+4. For FIX: parse review/benchmark feedback for specific issues to address
+5. Use ACE search or CLI tools to load implementation context for target files
+6. For inner loop (single mode only): load context_accumulator from prior IMPL/FIX tasks
+
+## Phase 3: Code Implementation
+
+Implementation backend selection:
+
+| Backend | Condition | Method |
+|---------|-----------|--------|
+| CLI | Multi-file optimization with clear plan | ccw cli --tool gemini --mode write |
+| Direct | Single-file changes or targeted fixes | Inline Edit/Write tools |
+
+For IMPL tasks:
+- **Single mode**: Apply optimizations in plan priority order (P0 first, then P1, etc.)
+- **Fan-out branch**: Apply ONLY this branch's single optimization
+- **Independent pipeline**: Apply this pipeline's optimizations in priority order
+- Follow implementation guidance from plan (target files, patterns)
+- Preserve existing behavior -- optimization must not break functionality
+
+For FIX tasks:
+- Read specific issues from review/benchmark feedback
+- Apply targeted corrections to flagged code locations
+- Verify the fix addresses the exact concern raised
+
+General rules:
+- Make minimal, focused changes per optimization
+- Add comments only where optimization logic is non-obvious
+- Preserve existing code style and conventions
+
+## Phase 4: Self-Validation
+
+| Check | Method | Pass Criteria |
+|-------|--------|---------------|
+| Syntax | IDE diagnostics or build check | No new errors |
+| File integrity | Verify all planned files exist and are modified | All present |
+| Acceptance | Match optimization plan success criteria | All target metrics addressed |
+| No regression | Run existing tests if available | No new failures |
+
+If validation fails, attempt auto-fix (max 2 attempts) before reporting error.
+
+Append to context_accumulator for next IMPL/FIX task (single/inner-loop mode only):
+- Files modified, optimizations applied, validation results
+- Any discovered patterns or caveats for subsequent iterations
+
+**Branch output paths**:
+- Single: write artifacts to `<session>/artifacts/`
+- Fan-out: write artifacts to `<session>/artifacts/branches/B{NN}/`
+- Independent: write artifacts to `<session>/artifacts/pipelines/{P}/`