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/ui-design/import-from-code.md

@@ -43,6 +43,25 @@ Extract design system tokens from source code files (CSS/SCSS/JS/TS/HTML) using
 
 ## Execution Process
 
+```
+Input Parsing:
+   ├─ Parse flags: --design-id, --session, --source
+   └─ Decision (base path resolution):
+      ├─ --design-id provided → Exact match by design ID
+      ├─ --session provided → Latest design run in session
+      └─ Neither → ERROR: Must provide --design-id or --session
+
+Phase 0: Setup & File Discovery
+   ├─ Step 1: Resolve base path
+   ├─ Step 2: Initialize directories
+   └─ Step 3: Discover files using script
+
+Phase 1: Parallel Agent Analysis (3 agents)
+   ├─ Style Agent → design-tokens.json + code_snippets
+   ├─ Animation Agent → animation-tokens.json + code_snippets
+   └─ Layout Agent → layout-templates.json + code_snippets
+```
+
 ### Step 1: Setup & File Discovery
 
 **Purpose**: Initialize session, discover and categorize code files