feat: add Script Builder to Chrome Extension and reorganize LLM context files

This commit introduces significant enhancements to the Crawl4AI ecosystem:

  Chrome Extension - Script Builder (Alpha):
  - Add recording functionality to capture user interactions (clicks, typing, scrolling)
  - Implement smart event grouping for cleaner script generation
  - Support export to both JavaScript and C4A script formats
  - Add timeline view for visualizing and editing recorded actions
  - Include wait commands (time-based and element-based)
  - Add saved flows functionality for reusing automation scripts
  - Update UI with consistent dark terminal theme (Dank Mono font, green/pink accents)
  - Release new extension versions: v1.1.0, v1.2.0, v1.2.1

  LLM Context Builder Improvements:
  - Reorganize context files from llmtxt/ to llm.txt/ with better structure
  - Separate diagram templates from text content (diagrams/ and txt/ subdirectories)
  - Add comprehensive context files for all major Crawl4AI components
  - Improve file naming convention for better discoverability

  Documentation Updates:
  - Update apps index page to match main documentation theme
  - Standardize color scheme: "Available" tags use primary color (#50ffff)
  - Change "Coming Soon" tags to dark gray for better visual hierarchy
  - Add interactive two-column layout for extension landing page
  - Include code examples for both Schema Builder and Script Builder features

  Technical Improvements:
  - Enhance event capture mechanism with better element selection
  - Add support for contenteditable elements and complex form interactions
  - Implement proper scroll event handling for both window and element scrolling
  - Add meta key support for keyboard shortcuts
  - Improve selector generation for more reliable element targeting

  The Script Builder is released as Alpha, acknowledging potential bugs while providing
  early access to this powerful automation recording feature.

.claude/settings.local.json

@@ -8,7 +8,15 @@
       "Bash(mkdir:*)",
       "Bash(cp:*)",
       "Bash(rm:*)",
-      "Bash(true)"
+      "Bash(true)",
+      "Bash(./package-extension.sh:*)",
+      "Bash(find:*)",
+      "Bash(chmod:*)",
+      "Bash(rg:*)",
+      "Bash(/Users/unclecode/.npm-global/lib/node_modules/@anthropic-ai/claude-code/vendor/ripgrep/arm64-darwin/rg -A 5 -B 5 \"Script Builder\" docs/md_v2/apps/crawl4ai-assistant/)",
+      "Bash(/Users/unclecode/.npm-global/lib/node_modules/@anthropic-ai/claude-code/vendor/ripgrep/arm64-darwin/rg -A 30 \"generateCode\\(events, format\\)\" docs/md_v2/apps/crawl4ai-assistant/content/content.js)",
+      "Bash(/Users/unclecode/.npm-global/lib/node_modules/@anthropic-ai/claude-code/vendor/ripgrep/arm64-darwin/rg \"<style>\" docs/md_v2/apps/crawl4ai-assistant/index.html -A 5)",
+      "Bash(git checkout:*)"
     ]
   },
   "enableAllProjectMcpServers": false