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/executor/commands/implement.md

@@ -0,0 +1,62 @@
+# Implement
+
+Execute implementation from task JSON via agent or CLI delegation.
+
+## Agent Mode
+
+Direct implementation using Edit/Write/Bash tools:
+
+1. Read task.files[] as target files
+2. Read task.implementation[] as step-by-step instructions
+3. For each step:
+   - Substitute [variable] placeholders with pre_analysis results
+   - New file → Write tool; Modify file → Edit tool
+   - Follow task.reference patterns
+4. Apply task.rationale.chosen_approach
+5. Mitigate task.risks[] during implementation
+
+Quality rules:
+- Verify module existence before referencing
+- Incremental progress — small working changes
+- Follow existing patterns from task.reference
+- ASCII-only, no premature abstractions
+
+## CLI Delegation Mode
+
+Build prompt from task JSON, delegate to CLI:
+
+Prompt structure:
+```
+PURPOSE: <task.title>
+<task.description>
+
+TARGET FILES:
+<task.files[] with paths and changes>
+
+IMPLEMENTATION STEPS:
+<task.implementation[] numbered>
+
+PRE-ANALYSIS CONTEXT:
+<pre_analysis results>
+
+REFERENCE:
+<task.reference pattern and files>
+
+DONE WHEN:
+<task.convergence.criteria[]>
+
+MODE: write
+CONSTRAINTS: Only modify listed files | Follow existing patterns
+```
+
+CLI call:
+```
+Bash({ command: `ccw cli -p "<prompt>" --tool <tool> --mode write --rule development-implement-feature`,
+  run_in_background: false, timeout: 3600000 })
+```
+
+Resume strategy:
+| Strategy | Command |
+|----------|---------|
+| new | --id <session>-<task_id> |
+| resume | --resume <parent_id> |