MV3 extension that captures the rendered active tab (via the shared
snapshot-extractor contract) and imports it into OpenPencil. Logic lives
in the new op-chrome-extension-core crate (wasm): endpoint rules,
chunked-transfer integrity, /mcp envelope + reply classification,
download-name sanitisation, SSO/account session parsing, and hub
snapshot-inbox delivery. JS is glue only (chrome.* APIs, fetch, popup
DOM, injected page functions).
Capture: full page + element pick. Delivery: local ingress
(POST /api/import/web-snapshot) with /mcp fallback, JSON download, and —
when signed in to OP Hub — the account snapshot inbox. Flat popup UI,
15-locale strings with an in-popup language switcher, store packaging.
Why a crate: keeps the security-sensitive logic in tested Rust rather
than glue JS, and the SW/popup split keeps dynamic import() out of the
service-worker graph (guarded by check-sw-imports).
Drives the three-OS CI matrix verification of the skia-safe + glutin +
glow + winit dep stack per Step 1a spec §7.
- examples/p0_probe.rs: stencil_visibility + readback chain runner (must
own a real OS main thread because winit on macOS rejects
EventLoop::new() from cargo test worker threads).
- tests/p0_probe.rs: subprocess-invoke wrapper, gated
#[ignore = "P0_PROBE_GATE"] so default cargo test stays untouched.
- Cargo.toml: add transient [target.'cfg(not(target_arch = "wasm32"))'.
dev-dependencies] block (skia-safe 0.97 + glutin 0.32.3 + glutin-winit
0.5.0 + glow 0.17.0 + raw-window-handle 0.6.2 + scopeguard 1.2.0 +
winit defaults). Pinned to versions resolved in /tmp/skia-glow-probe.
- .github/workflows/rust-check.yml: install Linux GL prereqs (xvfb,
mesa, libxkbcommon, libwayland) and add a P0-probe-gate step running
cargo test --ignored on each OS (Linux through xvfb-run; Windows
early-returns per spec §8.2 WINDOWS_GPU_DEFERRED_NO_RUNNER).
All three artefacts are TRANSIENT — reverted in a follow-up cleanup
commit after CI is green and the loader-compat notes commit lands.
Task 1 owns the permanent integration.
