Add TDD Structure Validation and Verification Phases with Comprehensive Reporting

- Introduced Phase 6: TDD Structure Validation to ensure compliance with TDD workflow standards, including task structure validation, dependency checks, and user configuration verification.
- Implemented Phase 7: TDD Verification for full compliance checks, including task chain structure validation, coverage analysis, and TDD cycle verification.
- Generated detailed TDD compliance reports with quality gate recommendations based on objective criteria.
- Added documentation for new commands and workflows in the Claude Commands index.

.claude/skills/workflow-tdd-plan/phases/01-session-discovery.md

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+# Phase 1: Session Discovery
+
+Create or discover TDD workflow session and extract session ID.
+
+## Objective
+
+- Create a new TDD workflow session via `/workflow:session:start`
+- Extract session ID for subsequent phases
+
+## Execution
+
+### Step 1.1: Execute Session Start
+
+```javascript
+Skill(skill="workflow:session:start", args="--type tdd --auto \"TDD: [structured-description]\"")
+```
+
+**TDD Structured Format**:
+```
+TDD: [Feature Name]
+GOAL: [Objective]
+SCOPE: [Included/excluded]
+CONTEXT: [Background]
+TEST_FOCUS: [Test scenarios]
+```
+
+**Example**:
+```
+TDD: JWT Authentication
+GOAL: Implement JWT-based authentication
+SCOPE: Email/password login, token generation, token refresh endpoints
+CONTEXT: Existing user database schema, REST API
+TEST_FOCUS: Login flow, token validation, refresh rotation, error cases
+```
+
+### Step 1.2: Parse Output
+
+- Extract: `SESSION_ID: WFS-[id]` (store as `sessionId`)
+
+**Validation**:
+- Session ID successfully extracted
+- Session directory `.workflow/active/[sessionId]/` exists
+
+**Note**: Session directory contains `workflow-session.json` (metadata). Do NOT look for `manifest.json` here - it only exists in `.workflow/archives/` for archived sessions.
+
+**TodoWrite**: Mark phase 1 completed, phase 2 in_progress
+
+**After Phase 1**: Return to user showing Phase 1 results, then auto-continue to Phase 2
+
+## Output
+
+- **Variable**: `sessionId` (WFS-xxx)
+- **TodoWrite**: Mark Phase 1 completed, Phase 2 in_progress
+
+## Next Phase
+
+Return to orchestrator, then auto-continue to [Phase 2: Context Gathering](02-context-gathering.md).