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@helixnow helixnow released this 09 Aug 08:54
v0.9.44
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Deep Student v0.9.44 Release Notes

v0.9.44 follows up the learning-OS milestone with 52 commits: VLM grounding reliability, prompt-cache cost optimization, the DeepSeek Responses API, mobile UX alignment, and a hardened release pipeline.

Highlights

🖼️ VLM Grounding & OCR

  • Multi-candidate model fallback for VLM grounding: grounding requests now fail over across candidate models (Qwen3-VL / GLM-4.6V) instead of erroring out
  • OCR improvements: corrected model-version mapping for Qwen3-VL-8B and GLM-4.6V OCR engines, plus Linux PDFium support so PDF preview / text extraction / OCR work on Linux

💬 AI Chat

  • Prompt-cache replay consistency: cross-turn requests are now replayed byte-identically to what was sent live (tool-call IDs, pre-tool text, and exact LLM-visible content are persisted). DeepSeek/OpenAI prefix caches hit far more often, cutting per-turn cost — with a new token-weighted cache hit-rate report (scripts/cache-hit-report.py) to track it
  • DeepSeek official Responses API is now the default path, with server-side web_search (deep search fixes) returning cited sources
  • Session-settings toggle semantics fixed; top bar alignment unified across search / commands / overview / data management

📱 Mobile

  • Learning resource panel drops its secondary top bar; multi-select actions moved to the global top bar
  • Three-panel swipe layout no longer scrolls horizontally (fixes scrollLeft pollution causing whole-view offset)
  • "All conversations" entry removed; scrollbar contract enforced repo-wide

🤖 Android

  • Guarded desktop-only browser APIs to prevent crashes in the Android WebView

🏗️ Engineering

  • Release pipeline hardening: strict migration gate with fixture tiers, fail-closed manifest validation, unsigned-recovery paths for macOS/Windows, updater artifact naming with version, pdfium download retries, and multi-arch verification
  • Version metadata baseline advanced to v0.9.44

⚠️ Notes

  • macOS builds are unsigned (not notarized) and Windows builds have no Authenticode signature — same recovery path used for v0.9.43, since the Apple/Windows signing certificates are not configured in this repository. Gatekeeper may warn on first launch on macOS.
  • Android APK is included; desktop release does not depend on it.
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