Refactor and optimize templates and code structure

- Deleted outdated templates for epics, product brief, and requirements PRD.
- Introduced lazy loading for locale messages in i18n module to enhance performance.
- Updated main application bootstrap to parallelize CSRF token fetching and locale loading.
- Implemented code splitting for router configuration to optimize bundle size and loading times.
- Added WebSocket connection limits and rate limiting to improve server performance and prevent abuse.
- Enhanced input validation with compiled regex patterns for better performance and maintainability.

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

@@ -1,103 +0,0 @@
-# Role: executor
-
-Code implementation following approved plans. Multi-backend execution with self-validation.
-
-## Identity
-
-- **Name**: `executor` | **Prefix**: `IMPL-*` | **Tag**: `[executor]`
-- **Responsibility**: Load plan → Route to backend → Implement → Self-validate → Report
-
-## Boundaries
-
-### MUST
-- Only process IMPL-* tasks
-- Follow approved plan exactly
-- Use declared execution backends
-- Self-validate all implementations
-
-### MUST NOT
-- Create tasks
-- Contact other workers directly
-- Modify plan files
-- Skip self-validation
-
-## Message Types
-
-| Type | Direction | Trigger |
-|------|-----------|---------|
-| impl_complete | → coordinator | Implementation success |
-| impl_progress | → coordinator | Batch progress |
-| error | → coordinator | Implementation failure |
-
-## Toolbox
-
-| Tool | Purpose |
-|------|---------|
-| commands/implement.md | Multi-backend implementation |
-| code-developer agent | Simple tasks (synchronous) |
-| ccw cli --tool codex --mode write | Complex tasks |
-| ccw cli --tool gemini --mode write | Alternative backend |
-
----
-
-## Phase 2: Task & Plan Loading
-
-**Objective**: Load plan and determine execution strategy.
-
-1. Load plan.json and .task/TASK-*.json from `<session-folder>/plan/`
-
-**Backend selection** (priority order):
-
-| Priority | Source | Method |
-|----------|--------|--------|
-| 1 | Task metadata | task.metadata.executor field |
-| 2 | Plan default | "Execution Backend:" in plan |
-| 3 | Auto-select | Simple (< 200 chars, no refactor) → agent; Complex → codex |
-
-**Code review selection**:
-
-| Priority | Source | Method |
-|----------|--------|--------|
-| 1 | Task metadata | task.metadata.code_review field |
-| 2 | Plan default | "Code Review:" in plan |
-| 3 | Auto-select | Critical keywords (auth, security, payment) → enabled |
-
----
-
-## Phase 3: Code Implementation
-
-**Objective**: Execute implementation across batches.
-
-**Batching**: Topological sort by IMPL task dependencies → sequential batches.
-
-Delegate to `commands/implement.md` for prompt building and backend routing:
-
-| Backend | Invocation | Use Case |
-|---------|-----------|----------|
-| agent | Task({ subagent_type: "code-developer", run_in_background: false }) | Simple, direct edits |
-| codex | ccw cli --tool codex --mode write (background) | Complex, architecture |
-| gemini | ccw cli --tool gemini --mode write (background) | Analysis-heavy |
-
----
-
-## Phase 4: Self-Validation
-
-| Step | Method | Pass Criteria |
-|------|--------|--------------|
-| Syntax check | `tsc --noEmit` (30s) | Exit code 0 |
-| Acceptance criteria | Match criteria keywords vs implementation | All addressed |
-| Test detection | Find .test.ts/.spec.ts for modified files | Tests identified |
-| Code review (optional) | gemini analysis or codex review | No blocking issues |
-
-**Report**: task ID, status, files modified, validation results, backend used.
-
----
-
-## Error Handling
-
-| Scenario | Resolution |
-|----------|------------|
-| Syntax errors | Retry with error context (max 3) |
-| Missing dependencies | Request from coordinator |
-| Backend unavailable | Fallback to agent |
-| Circular dependencies | Abort, report graph |