Prepare for stable release 2025.12.09

- Remove all DEBUG print statements from AIAssistant plugin
- Update version to 2025.12.09 across all build files
  - src/cthulhu/cthulhuVersion.py
  - meson.build
  - distro-packages/Arch-Linux/PKGBUILD
- Add OCR optional dependencies to meson.build
  - pdf2image: PDF processing for OCR
  - scipy: Scientific computing for OCR analysis
  - webcolors: Color name resolution for OCR
- Add explicit OCR Python packages to PKGBUILD optdepends
  - python-pdf2image
  - python-scipy
  - python-webcolors
- Remove temporary test files from repository root
  - test_atspi_version.py
  - test_axtext_basic.py
  - test_modern_atspi_keystroke.py

All changes validated with successful local build.
Ready for final testing before stable release tag.

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

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

distro-packages/Arch-Linux/PKGBUILD

@@ -1,7 +1,7 @@
 # Maintainer: Storm Dragon <storm_dragon@stormux.org>
 
 pkgname=cthulhu
-pkgver=2025.08.14
+pkgver=2025.12.09
 pkgrel=1
 pkgdesc="Desktop-agnostic screen reader with plugin system, forked from Orca"
 url="https://git.stormux.org/storm/cthulhu"
@@ -60,6 +60,9 @@ optdepends=(
   # OCR plugin dependencies (optional)
   'python-pillow: Image processing for OCR and AI Assistant'
   'python-pytesseract: Python wrapper for Tesseract OCR engine'
+  'python-pdf2image: PDF to image conversion for OCR'
+  'python-scipy: Scientific computing for OCR color analysis'
+  'python-webcolors: Color name lookup for OCR text decoration'
   'tesseract: OCR engine for text recognition'
   'tesseract-data-eng: English language data for Tesseract'
 )