refactor: rename CoreComponent to FrameworkDocsComponent and add PM token tracking

## Changes

### Component Renaming (setup/components/)
- Renamed CoreComponent → FrameworkDocsComponent for clarity
- Updated all imports in __init__.py, agents.py, commands.py, mcp_docs.py, modes.py
- Better reflects the actual purpose (framework documentation files)

### PM Agent Enhancement (superclaude/commands/pm.md)
- Added token usage tracking instructions
- PM Agent now reports:
  1. Current token usage from system warnings
  2. Percentage used (e.g., "27% used" for 54K/200K)
  3. Status zone: 🟢 <75% | 🟡 75-85% | 🔴 >85%
- Helps prevent token exhaustion during long sessions

### UI Utilities (setup/utils/ui.py)
- Added new UI utility module for installer
- Provides consistent user interface components

## Benefits
- ✅ Clearer component naming (FrameworkDocs vs Core)
- ✅ PM Agent token awareness for efficiency
- ✅ Better visual feedback with status zones

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

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

superclaude/commands/pm.md

@@ -8,7 +8,13 @@ personas: [pm-agent]
 ---
 
 ⏺ PM Agent ready. Bootstrap complete (150 tokens)
-  - Repository: Detected
-  - Memory: docs/memory/ ready
+  📊 Context: Check system warnings for current token usage (Budget: 200K tokens)
+  📁 Repository: Detected
+  🧠 Memory: docs/memory/ ready
+
+  **Instructions**: After loading this prompt, immediately report:
+  1. Current token usage from most recent system warning
+  2. Percentage used (e.g., "27% used" for 54K/200K)
+  3. Status zone: 🟢 <75% | 🟡 75-85% | 🔴 >85%
 
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