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-lifecycle-v4/roles/reviewer/commands/review-code.md

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+# Code Review
+
+4-dimension code review for implementation quality.
+
+## Inputs
+
+- Plan file (plan.json)
+- Git diff or modified files list
+- Test results (if available)
+
+## Dimensions
+
+| Dimension | Critical Issues |
+|-----------|----------------|
+| Quality | Empty catch, any casts, @ts-ignore, console.log |
+| Security | Hardcoded secrets, SQL injection, eval/exec, innerHTML |
+| Architecture | Circular deps, imports >2 levels deep, files >500 lines |
+| Requirements | Missing core functionality, incomplete acceptance criteria |
+
+## Review Process
+
+1. Gather modified files from executor's state (team_msg get_state)
+2. Read each modified file
+3. Score per dimension (0-100%)
+4. Classify issues by severity (Critical/High/Medium/Low)
+5. Generate verdict (BLOCK/CONDITIONAL/APPROVE)
+
+## Output
+
+Write review report to <session>/artifacts/review-report.md:
+- Per-dimension scores
+- Issue list with file:line references
+- Verdict with justification
+- Recommendations (if CONDITIONAL)

.claude/skills/team-lifecycle-v4/roles/reviewer/commands/review-spec.md

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+# Spec Quality Review
+
+5-dimension spec quality gate with discuss protocol.
+
+## Inputs
+
+- All spec docs in <session>/spec/
+- Quality gate config from specs/quality-gates.md
+
+## Dimensions
+
+| Dimension | Weight | Focus |
+|-----------|--------|-------|
+| Completeness | 25% | All sections present with substance |
+| Consistency | 25% | Terminology, format, references uniform |
+| Traceability | 25% | Goals→Reqs→Arch→Stories chain |
+| Depth | 25% | AC testable, ADRs justified, stories estimable |
+
+## Review Process
+
+1. Read all spec documents from <session>/spec/
+2. Load quality gate thresholds from specs/quality-gates.md
+3. Score each dimension
+4. Run cross-document validation
+5. Generate readiness-report.md + spec-summary.md
+6. Run DISCUSS-003:
+   - Artifact: <session>/spec/readiness-report.md
+   - Perspectives: product, technical, quality, risk, coverage
+   - Handle verdict per consensus protocol
+   - DISCUSS-003 HIGH always triggers user pause
+
+## Quality Gate
+
+| Gate | Score |
+|------|-------|
+| PASS | >= 80% |
+| REVIEW | 60-79% |
+| FAIL | < 60% |
+
+## Output
+
+Write to <session>/artifacts/:
+- readiness-report.md: Dimension scores, issue list, traceability matrix
+- spec-summary.md: Executive summary of all spec docs

.claude/skills/team-lifecycle-v4/roles/reviewer/role.md

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+---
+role: reviewer
+prefix: REVIEW
+additional_prefixes: [QUALITY, IMPROVE]
+inner_loop: false
+discuss_rounds: [DISCUSS-003]
+message_types:
+  success_review: review_result
+  success_quality: quality_result
+  fix: fix_required
+  error: error
+---
+
+# Reviewer
+
+Quality review for both code (REVIEW-*) and specifications (QUALITY-*, IMPROVE-*).
+
+## Identity
+- Tag: [reviewer] | Prefix: REVIEW-*, QUALITY-*, IMPROVE-*
+- Responsibility: Multi-dimensional review with verdict routing
+
+## Boundaries
+### MUST
+- Detect review mode from task prefix
+- Apply correct dimensions per mode
+- Run DISCUSS-003 for spec quality (QUALITY-*/IMPROVE-*)
+- Generate actionable verdict
+### MUST NOT
+- Mix code review with spec quality dimensions
+- Skip discuss for QUALITY-* tasks
+- Implement fixes (only recommend)
+
+## Phase 2: Mode Detection
+
+| Task Prefix | Mode | Command |
+|-------------|------|---------|
+| REVIEW-* | Code Review | commands/review-code.md |
+| QUALITY-* | Spec Quality | commands/review-spec.md |
+| IMPROVE-* | Spec Quality (recheck) | commands/review-spec.md |
+
+## Phase 3: Review Execution
+
+Route to command based on detected mode.
+
+## Phase 4: Verdict
+
+### Code Review Verdict
+| Verdict | Criteria |
+|---------|----------|
+| BLOCK | Critical issues present |
+| CONDITIONAL | High/medium only |
+| APPROVE | Low or none |
+
+### Spec Quality Gate
+| Gate | Criteria |
+|------|----------|
+| PASS | Score >= 80% |
+| REVIEW | Score 60-79% |
+| FAIL | Score < 60% |
+
+Report: mode, verdict/gate, dimension scores, discuss verdict (quality only), output paths.
+
+## Error Handling
+
+| Scenario | Resolution |
+|----------|------------|
+| Missing context | Request from coordinator |
+| Invalid mode | Abort with error |
+| Discuss fails | Proceed without discuss, log warning |