refactor: Add tree-style execution flow diagrams to all workflow commands

Added tree-style execution process diagrams using ASCII art (├─, └─, │) to 34 workflow command files across three directories for improved readability and execution flow clarity.

## Changes by Directory

### workflow/ root (17 files)
- lite-plan.md, lite-execute.md, lite-fix.md
- plan.md, execute.md, replan.md
- status.md, review.md, review-fix.md
- review-session-cycle.md, review-module-cycle.md
- session commands (start, complete, resume, list)
- tdd-plan.md, tdd-verify.md, test-cycle-execute.md, test-gen.md, test-fix-gen.md

### workflow/ui-design/ (10 files)
- layout-extract.md, animation-extract.md, style-extract.md
- generate.md, import-from-code.md, codify-style.md
- imitate-auto.md, explore-auto.md
- reference-page-generator.md, design-sync.md

### workflow/tools/ (8 files)
- conflict-resolution.md, task-generate-agent.md, context-gather.md
- tdd-coverage-analysis.md, task-generate-tdd.md
- test-task-generate.md, test-concept-enhanced.md, test-context-gather.md

## Diagram Features
- Input parsing with flag enumeration
- Decision branching with conditional paths
- Phase/step hierarchy with clear nesting
- Mode detection and validation flows

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude <noreply@anthropic.com>

.claude/commands/workflow/tools/tdd-coverage-analysis.md

@@ -17,6 +17,38 @@ Analyze test coverage and verify Red-Green-Refactor cycle execution for TDD work
 - Verify TDD cycle execution (Red -> Green -> Refactor)
 - Generate coverage and cycle reports
 
+## Execution Process
+
+```
+Input Parsing:
+   ├─ Parse flags: --session
+   └─ Validation: session_id REQUIRED
+
+Phase 1: Extract Test Tasks
+   └─ Find TEST-*.json files and extract focus_paths
+
+Phase 2: Run Test Suite
+   └─ Decision (test framework):
+      ├─ Node.js → npm test --coverage --json
+      ├─ Python → pytest --cov --json-report
+      └─ Other → [test_command] --coverage --json
+
+Phase 3: Parse Coverage Data
+   ├─ Extract line coverage percentage
+   ├─ Extract branch coverage percentage
+   ├─ Extract function coverage percentage
+   └─ Identify uncovered lines/branches
+
+Phase 4: Verify TDD Cycle
+   └─ FOR each TDD chain (TEST-N.M → IMPL-N.M → REFACTOR-N.M):
+      ├─ Red Phase: Verify tests created and failed initially
+      ├─ Green Phase: Verify tests now pass
+      └─ Refactor Phase: Verify code quality improved
+
+Phase 5: Generate Analysis Report
+   └─ Create tdd-cycle-report.md with coverage metrics and cycle verification
+```
+
 ## Execution Lifecycle
 
 ### Phase 1: Extract Test Tasks