Operator-asked 2026-05-31 (during sidecar synthetic anchor cleanup): "the add source/subscription button idea to the firefox extension so it can tell me if a source/artist is added or not and offer an option to add it if it isn't." Plan tracked in Scribe task #507. ## Backend - `ExtensionService.probe(url)` — read-only resolution. Reuses `_derive` for platform+slug, then 2 SELECTs. Returns one of: - `source_match` (exact (artist, platform, url) Source exists) - `artist_match` (artist exists, this URL isn't a Source yet; collapses the sidecar-synthetic-only case from v26.06.01.0) - `new` (neither exists) - `unknown_platform` (URL didn't match any artist-page regex) - `GET /api/extension/probe?url=...` route with `X-Extension-Key` auth posture matching `/quick-add-source`. Read-only, side-effect free. - 6 backend tests in tests/test_api_extension.py covering each state + auth + invalid URL. ## Extension - `api.js`: `probeSource(url)` mirroring `quickAddSource` shape. - `background.js`: `PROBE_SOURCE` + `OPEN_ARTIST_PAGE` handlers. The latter strips the `/api` suffix from configured `apiUrl` (placeholder format per options.html) and opens `${base}/artist/{slug}` in a new tab via `browser.tabs.create`. - `content-script.js`: probe-first render — on page-load and SPA navigation, asks the backend for the URL's state and renders the chip in the matching color/copy on FIRST paint instead of flashing generic "Add" and updating after. Click handler branches: `source_match` → OPEN_ARTIST_PAGE; `artist_match`/`new` → existing ADD_AS_SOURCE flow (then re-probes so the chip flips green immediately, no wait for next nav). - `content-script.css`: three state-color modifiers (--new, --artist-match, --source-match) on the FC parchment-on-slate palette. Sage for already-added, amber for artist-exists, accent orange for new. ## Versioning - `extension/manifest.json` + `extension/package.json` → 1.0.6. build.yml's sign-extension job will fire on push to main since no `ext-1.0.6` Forgejo/Gitea release exists yet — exercises the regenerated AMO keys end-to-end. ## Behavior on the sidecar-synthetic case Filesystem-imported "Dymkens"-style artist with only a sidecar synthetic Source: probe returns `artist_match` (not `new`), so the chip reads "+ Add Patreon source to Dymkens" rather than offering to recreate the artist. Clicking adds the real Source; existing `_source_for_sidecar` preference logic (v26.06.01.0) routes future gallery-dl Posts to the real one.
FabledCurator Firefox Extension
Self-hosted Firefox extension that pushes session cookies from supported platforms (Patreon, SubscribeStar, Hentai-Foundry, Discord, Pixiv, DeviantArt) into FabledCurator, and lets you add a creator as a Source from their page in one click.
Install (operator)
The signed XPI is bundled into the FC Docker image. Open FC → Settings → Maintenance → Browser extension → click "Install Firefox extension". Firefox shows its native install prompt. After installing, open the extension's options page (about:addons → FabledCurator → Preferences) and paste in the FC URL + extension API key shown on the same card.
Develop
cd extension/
npm install --no-save # web-ext only
npm run lint # web-ext lint
npm run start # launches Firefox with extension loaded
npm run build # unsigned XPI in web-ext-artifacts/
Smoke checklist (after every release that touches extension/**)
npm run lintpassesnpm run startloads the extension in a clean Firefox profile- Options page accepts FC URL + key, indicator turns green
- Cookie export: log into patreon.com, click Patreon card → "X cookies exported"
- Discord token: open discord.com, click Discord card → "Token captured"
- Pixiv OAuth: click Pixiv card → login redirects, token stored
- Add as source: visit patreon.com/, click floating button → toast
- Subscriptions list: popup → "Sources" tab → list renders
- Check now: click play icon on source row → no error toast
Release
Bump manifest.json + package.json SemVer (both files) and commit
under extension/**. The .forgejo/workflows/extension.yml workflow
runs web-ext sign on main, commits the signed XPI to
frontend/public/extension/, and the next FC server build bundles it
into the Docker image.