Third slice of the release-notes pipeline (#1256 format+generator, #1257 CI
gate): release screenshots become reproducible and provably mock-only.
The v0.20 capture script was single-use (hard-coded slugs, paths, hero) and
fail-open: a lost IPTVNATOR_E2E_DATA_DIR silently fell back to the user's
real ~/.iptvnator database, `...process.env` leaked ambient TMDB keys and
proxies, nothing gated network access, and no frame content was ever
validated. Each hole leaks real playlists, credentials, or copyrighted
artwork into published screenshots without a single signal.
New pipeline:
- tools/release/screenshots.manifest.json — declarative shots (slug, title,
named setup steps, themes). Adding a feature shot = one manifest entry.
- capture-release-screenshots.ts — orchestrator; output goes to
apps/website/public/blog/<release>/screenshots/<slug>-<theme>.png, release
slug derived from package.json (or --release), --only/--theme filters.
- capture-app-driver.ts / capture-navigation.ts — launch, seeding, theme,
and the named-action vocabulary; actions are order-independent (every
portal action starts from the dashboard).
- screenshot-guards.mjs — the fail-closed policy, pure and unit-tested:
G1 the real database is snapshotted (sha256+mtime) before launch and must
be byte-identical after; the isolated DB must actually exist
G2 the app receives an allowlisted environment, never ...process.env
G3 deny-by-default network gate; known app-level calls (GitHub update
check) are answered by local stubs; any other blocked request fails
the run — a silently-blocked TMDB call would leave a frame that looks
broken rather than unsafe
G4 every frame is scanned before capture: external img/background URLs,
credential-shaped text, MAC addresses, non-localhost m3u8 references
G5 TMDB enrichment asserted disabled via the renderer's IndexedDB
Any violation deletes every frame captured in the run and exits non-zero.
The guards paid for themselves on the first live run: G3 caught the mock
server redirecting stream endpoints to a public demo HLS
(test-streams.mux.dev) — meaning earlier hand-run captures could embed
third-party video frames. The M3U shot now deliberately captures the groups
layout without starting playback.
`.changes` validation now cross-checks `screenshot:` slugs against the
manifest, so a note cannot reference an image the capture run never
produces.
Verified end-to-end: 10/10 shots (5 slugs × dark/light) captured against
dist build + xtream-mock-server, frames visually inspected (fictional
titles/artwork only), guard-violation paths exercised live. 67 unit tests
in release-tools, lint green, script files within the repo size limit.
Co-authored-by: Claude Opus 5 <noreply@anthropic.com>
