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/status.md

@@ -23,6 +23,35 @@ No synchronization needed - all views are calculated from current JSON state.
 /workflow:status --dashboard        # Generate HTML dashboard board
 ```
 
+## Execution Process
+
+```
+Input Parsing:
+   └─ Decision (mode detection):
+      ├─ --project flag → Project Overview Mode
+      ├─ --dashboard flag → Dashboard Mode
+      ├─ task-id argument → Task Details Mode
+      └─ No flags → Workflow Session Mode (default)
+
+Project Overview Mode:
+   ├─ Check project.json exists
+   ├─ Read project data
+   ├─ Parse and display overview + features
+   └─ Show recent archived sessions
+
+Workflow Session Mode (default):
+   ├─ Find active session
+   ├─ Load session data
+   ├─ Scan task files
+   └─ Display task progress
+
+Dashboard Mode:
+   ├─ Collect active sessions
+   ├─ Collect archived sessions
+   ├─ Generate HTML from template
+   └─ Write dashboard.html
+```
+
 ## Implementation Flow
 
 ### Mode Selection