feat: Implement workflow phases for test generation and execution

- Added Phase 1: Session Start to detect input mode and create test workflow session.
- Added Phase 2: Test Context Gather to gather test context via coverage analysis or codebase scan.
- Added Phase 3: Test Concept Enhanced to analyze test requirements using Gemini and generate multi-layered test requirements.
- Added Phase 4: Test Task Generate to create test-specific tasks based on analysis results.
- Added Phase 5: Test Cycle Execute to manage iterative test execution and fix cycles with adaptive strategies.
- Introduced BottomPanel component for terminal dashboard with Queue and Inspector tabs.

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

@@ -0,0 +1,57 @@
+# 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).