docs: Windows port proposal (solo-first, gated on gbrain PGLite/Windows #1549)#5
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Approach-before-code proposal per CONTRIBUTING. Maps the macOS-bound layers (launchd, brew, zsh gbq, bash installer, /tmp hook paths), flags the gating unknown (gbrain+PGLite on Windows = Phase 0 spike), and phases the work: cross-platform hooks → scheduler abstraction (Task Scheduler) → cross-platform gbq → install.ps1 → CI → docs. Solo+PGLite only for v1; native PowerShell, not WSL.
- /tmp -> tempfile.gettempdir() (session-logger/indexer/recap, daily-reflection) - claude binary via CLAUDE_BIN > ~/.local/bin/claude > shutil.which (no __HOME__ bake-in) - BRAIN/home resolved at runtime with Path.home() - .gitattributes: enforce LF so CRLF can't break hooks on Windows - test-hooks.sh: isolate TMPDIR in the throwaway HOME (locks no longer leak) - windows-port.md: mark Phase 1 done + note server-side-search sidesteps gbrain gating Pure Python, benefits macOS too, not gated by gbrain (#1549). 15/15 test-hooks pass.
- engine/search/brain_search.py: pure-Python BM25 local search (index/query/health), no bun/pgvector/model download. Cross-platform, offline. Replaces gbrain search on Windows where PGLite/pgvector is broken (#1549). Tested on a real vault (1922 chunks). - install.ps1: Windows-native installer mirroring install.sh — vault skeleton, hooks, brain_search index, gbq.cmd shim (so 'gbq query' works unchanged), Task Scheduler (reindex 04:00 + reflection 12:00/23:00), CLAUDE.md merge, git init. ASCII-only (PS 5.1). - windows-port.md: documents the un-gated Windows path. Note: install.ps1 needs a real-Windows smoke test; BM25 = keyword (embeddings optional).
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Approach-before-code proposal per CONTRIBUTING. Research finding: the foundation is Windows-ready (bun 1.2+ stable Windows, PGLite is WASM) but gbrain itself blocks the solo path — issue #1549 (pgvector missing from the PGLite WASM binary on Windows = no semantic search). Recommendation: do the cross-platform-hooks phase regardless, watch gbrain #1549, run the spike once it's fixed; meanwhile point Windows users at the standalone git-only journal tool.