v9.2.0

🎨 Theming Overhaul

• Replaced 25+ individual CSS files with a single template-based theming system using variable substitution

🤖 Chat Backend Improvements

• New unified Chat Backend Settings dialog (File menu) with tabs for ChatGPT, LM Studio, MiniMax, and Kobold
• Added support for OpenAI's GPT-5.4 and GPT-5.5 model families with verbosity and reasoning effort controls
• Live API cost panel displays input/cached/output pricing per model
• Migrated ChatGPT integration to OpenAI's Responses API for streaming
• Improved thinking-tag stripping in LM Studio chat to handle tags split across stream chunks

📚 Database & Document Processing

• Added support for .htm files alongside existing .html ingestion
• Folder selection now prompts whether to include subdirectory files
• New Cancel button for in-progress database creation with automatic cleanup of partial files
• Enhanced info bar showing queued files, chunk size, overlap, and embedding precision in real-time
• Symlink creation now handles filename collisions via hash-based disambiguation

🕷️ Documentation Scraper

• New Resume capability for interrupted scrapes — pick up where you left off instead of starting over
• Added Mintlify scraper for llms.txt-based documentation sites (including Model Context Protocol docs)
• Rate-limit detection (HTTP 429) automatically pauses scrapes and persists state for later resumption
• Added scrapers for curl_cffi, emoji, lxml, onnx, pyparsing, and uv documentation

🔧 UI Polish & Fixes

• Reorganized Database Query and Database Creation tabs with cleaner grid layouts
• Vector Models tab now allows re-downloading already-downloaded models with confirmation
• Voice recorder button now shows "Stop Recording" while active
• Submit Question button now styled green and set as default
• Removed unused chat history file writes and Jeeves context spinner
• Fixed search term filter tooltip (now correctly describes inclusion, not exclusion)

🐛 Bug Fixes

• Fixed TileDB search returning misaligned results when vector IDs don't match query order
• Fixed transcription and OCR worker processes to properly surface errors via exit codes
• Fixed PDF and audio file handles to use context managers, preventing resource leaks
• Fixed checkpoint saves to use atomic os.replace with retry on Windows permission errors
• Removed dependency on LangChain in favor of internal Document class