feat(analytics): upload web source maps to Sentry + tie release to build (#369)

* feat(analytics): upload web source maps to Sentry + tie release to build

Web crash reports were unusable: the bundle ships minified with no source
maps uploaded, and every build reported as the frozen APP_VERSION, so a
Sentry error showed an unreadable stack under a single release.

- Add @sentry/vite-plugin: emit hidden source maps and upload them by debug
  id when SENTRY_AUTH_TOKEN is present (published Docker build only), then
  delete the maps so they never ship. No-op for dev and the source archive.
- Set the Sentry release from SENTRY_RELEASE / VITE_SENTRY_RELEASE (the Docker
  build passes the release version), falling back to APP_VERSION.
- Relax beforeSend so app bundle frames keep a host-stripped path (Sentry needs
  it to match the uploaded map) while the instance hostname, error message, and
  PII stay stripped. Filesystem paths still collapse to the basename.
- Wire the Dockerfile (sentry_auth_token build secret + SENTRY_RELEASE arg/env)
  and the release docker job.

* fix(analytics): point source map upload at the snapotter org (project node)

.github/workflows/release.yml

@@ -241,6 +241,9 @@ jobs:
             SNAPOTTER_ANALYTICS=on
             SNAPOTTER_POSTHOG_KEY=${{ secrets.SNAPOTTER_POSTHOG_KEY }}
             SNAPOTTER_SENTRY_DSN=${{ secrets.SNAPOTTER_SENTRY_DSN }}
+            SENTRY_RELEASE=${{ needs.release.outputs.new_version }}
+          secrets: |
+            sentry_auth_token=${{ secrets.SENTRY_AUTH_TOKEN }}
           labels: ${{ steps.meta.outputs.labels }}
           outputs: type=image,"name=snapotter/snapotter,ghcr.io/snapotter-hq/snapotter",push-by-digest=true,name-canonical=true,push=true
           cache-from: type=registry,ref=ghcr.io/snapotter-hq/snapotter:cache-${{ env.PLATFORM_PAIR }}