Merge pull request #150 from zinzied/main - Enhanced User Experience

Features integrated:
- Stars Feature: Community-driven skill discovery with upvotes
- Auto-Update: Automatic skill updates via START_APP.bat (Git + PowerShell fallback)
- Interactive Prompt Builder: Context-aware prompt construction
- Date Tracking: Added date_added field to all skills
- Auto-Categorization: Smart category assignment based on keywords
- Enhanced UI: Risk level badges, date display, category stats

Conflicts resolved:
- START_APP.bat: Merged enhanced auto-update logic
- README.md: Kept v6.4.1 with new feature documentation
- Home.jsx: Combined fuzzy search + pagination + stars
- SkillDetail.jsx: Merged syntax highlighting + stars + date badges

All 950+ skills updated with date tracking and proper categorization.

Made-with: Cursor

web-app/public/skills/sql-optimization-patterns/SKILL.md

@@ -0,0 +1,37 @@
+---
+name: sql-optimization-patterns
+description: "Master SQL query optimization, indexing strategies, and EXPLAIN analysis to dramatically improve database performance and eliminate slow queries. Use when debugging slow queries, designing database..."
+risk: unknown
+source: community
+---
+
+# SQL Optimization Patterns
+
+Transform slow database queries into lightning-fast operations through systematic optimization, proper indexing, and query plan analysis.
+
+## Use this skill when
+
+- Debugging slow-running queries
+- Designing performant database schemas
+- Optimizing application response times
+- Reducing database load and costs
+- Improving scalability for growing datasets
+- Analyzing EXPLAIN query plans
+- Implementing efficient indexes
+- Resolving N+1 query problems
+
+## Do not use this skill when
+
+- The task is unrelated to sql optimization patterns
+- You need a different domain or tool outside this scope
+
+## Instructions
+
+- Clarify goals, constraints, and required inputs.
+- Apply relevant best practices and validate outcomes.
+- Provide actionable steps and verification.
+- If detailed examples are required, open `resources/implementation-playbook.md`.
+
+## Resources
+
+- `resources/implementation-playbook.md` for detailed patterns and examples.