Update installation scripts and documentation

- Enhanced install.sh with better error handling and multi-shell support
- Updated configuration files (CLAUDE.md, MCP.md, RULES.md) to latest version
- Added comprehensive CONTRIBUTING.md guidelines
- Improved README.md formatting and clarity
- Fixed Commands_Cheat_Sheet.md formatting
- Updated .gitignore with better exclusions
- Minor LICENSE and CHANGELOG.md updates

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

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

MCP.md

@@ -20,10 +20,10 @@ User Triggers (no flags):
   "need button/form/component" → Magic(builder) → integrate
   "why slow/broken" → Sequential(analysis) → impl fix
   "design architecture" → Sequential(system design) → C7(patterns)
-  
+
 Context Triggers (flags override):
   Import errors → C7(resolve-library-id) → verify docs
-  Complex debugging → Sequential(root cause) → native impl  
+  Complex debugging → Sequential(root cause) → native impl
   UI requests → Magic(builder/refiner) → Puppeteer(test)
   Perf issues → Sequential(analysis) → optimize impl
 
@@ -33,7 +33,7 @@ Research-First (shared/research-first.yml):
   API integration → WebSearch REQUIRED for official docs
   Unknown pattern → Sequential thinking + research REQUIRED
   Confidence < 90% → Impl BLOCKED until research complete
-  
+
 Task Complexity:
   Simple queries → Native tools only (unless flagged)
   Lib questions → C7 progressive loading (or --c7)
@@ -69,7 +69,7 @@ UltraCompressed: --uc flag|High context|Token budget | ~70% reduction | Clarity
 
 ```yaml
 C7: ✓Relevant docs→Proceed | ⚠Partial→Try different terms | ✗No match→Sequential alternatives
-Sequential: ✓Clear analysis+steps→Impl | ⚠Partial→Continue thoughts | ✗Unclear/timeout→Native+user questions  
+Sequential: ✓Clear analysis+steps→Impl | ⚠Partial→Continue thoughts | ✗Unclear/timeout→Native+user questions
 Magic: ✓Component matches→Integrate | ⚠Close needs changes→Refiner | ✗Poor→Try different terms
 Multi-MCP: Results enhance each other | Conflict→Most authoritative | Redundant→Stop calls
 ```