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thoughtsync/desktop
bvandeusenandClaude Opus 5 ed623a7bef
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M10.7d: download attachment bytes into a content-addressed store (task 2107)
The client half of task 1942's server work. Metadata already rides the delta
feed; this fetches the payload so a synced image exists on the device.

Blobs are filed under their own sha256, so the same image attached to five
notes is stored once and re-downloading it is free — the dedupe the task asks
for falls out of content addressing rather than needing bookkeeping.

The hash is also the integrity check, applied on the way IN. Bytes that don't
hash to what the server advertised are refused rather than filed under a name
that lies about them — and because the blob then still counts as missing, the
next sync simply tries again.

SECURITY: the hash arrives in a server response and becomes a FILENAME, so it
is validated as 64 hex characters before touching the filesystem. Without
that, a hostile or buggy server could send "../../..." and steer a write
outside the blob directory. Tested.

A failed attachment never fails the sync. Notes are the primary data and have
already landed; aborting here would let one unreachable file block every
future sync. Counted, logged, surfaced in the UI as "they'll retry on the
next sync", and retried because the blob is still absent.

sha2 is pure Rust, so the Windows cross-compile lane pays nothing for it —
the constraint recorded in ci-requirements.md.

SPLIT, deliberately: this stores the bytes but does NOT yet render them in
the webview. That half needs a custom URI scheme or the asset protocol, whose
URL form differs by platform (Windows uses http://scheme.localhost/, others
scheme://localhost/) — and CI cannot verify webview rendering at all, being
headless with no webview. Guessing at it here would ship an unverifiable
change on the most fragile lane. Follow-up filed; synced images will show as
broken until it lands.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01SreJkbxB4gx8pPsu8QbLPi
2026-07-26 00:43:34 -04:00
..

ThoughtSync desktop (Tauri v2)

Local-first desktop client. The window loads the shared Vue 3 frontend from ../frontend; the Rust core (src-tauri) owns the on-device store and the opt-in sync engine (built out across the M10 milestone). Works fully offline; optionally syncs to a self-hosted ThoughtSync server.

Layout

desktop/
  src-tauri/
    Cargo.toml
    build.rs
    tauri.conf.json          # frontendDist -> ../../frontend/dist, devUrl :5173
    capabilities/default.json
    src/
      main.rs                # thin shim -> lib::run()
      lib.rs                 # tauri::Builder entry point

The Vue frontend is the sibling ../frontend package, shared with the web build. On desktop it is backed by a local data source via frontend/src/adapters/ (M10.3) instead of the server REST API. frontend and src-tauri are siblings, not nested, so the beforeDev/beforeBuild commands cd "$(git rev-parse --show-toplevel)/frontend" to resolve regardless of the CLI's working directory.

Prerequisites

The toolchain (Rust + Node + WebKitGTK 4.1 + tauri-cli) is provided by the ci-tauri CI image. For local dev: install Rust + Node, cargo install tauri-cli, and the Tauri v2 Linux system deps — see CI-tauri/Dockerfile in the CI-runner repo for the exact apt list (libwebkit2gtk-4.1-dev, libgtk-3-dev, librsvg2-dev, libayatana-appindicator3-dev, libxdo-dev, patchelf, ...).

Dev

cd desktop/src-tauri && cargo tauri dev

beforeDevCommand starts the Vite dev server (port 5173) in ../frontend.

Build (Linux)

cargo tauri icon "$(git rev-parse --show-toplevel)/frontend/public/icon.svg"
cd desktop/src-tauri && cargo tauri build   # -> .deb + .AppImage

App icons are generated from the frontend's icon.svg via cargo tauri icon (not committed; CI does this before cargo tauri build). Bundle targets: deb, appimage (Linux-first; Windows/macOS later, no code changes expected).

Status

Scaffold (M10.2): boots the shared Vue UI in a native window. Until the local data adapter lands (M10.3 + M10.5) the app has no server configured, so it shows the login screen without a working backend — full offline functionality arrives with the local SQLite store (M10.4) + adapters/local.ts (M10.5).