25b1c3a366
Unlicensed users can now summarize a single video at a time using their
own Gemini API key. The result renders in the UI exactly like a paid
summary, but is not persisted — there's no library entry, no history,
and a second submission while one is in flight is rejected.
Server (server/index.js):
• /api/process is now in LICENSE_OPEN_PATHS. The route handler
distinguishes free users (state !== "licensed" || no "core") and:
- rejects USE_SERVER_KEY / empty key with 402 byo_key_required
(so the bundled Gemini key stays paid-only)
- rejects a second concurrent job with 409 processing_in_progress
via a module-level freeJobInFlight flag, released in finally
- skips saveToHistory so the host's library stays clean
• Pro feature gates (history/library/subscriptions) unchanged — still
return 402 feature_not_in_tier for unlicensed callers.
Frontend (public/index.html):
• New state.activationSkipped flag (persisted to localStorage). The
activation screen still appears on first launch, but now offers a
"Skip — use free mode" button alongside Activate / Buy a key.
Once skipped, the main app renders normally.
• Free-mode upgrade banner under the top bar with Upgrade and "I have
a key" buttons (the latter routes back to the activation screen).
• handleLibraryClick / handleSubscribeClick wrappers — for unlicensed
users, the library (clock) icon and the channel-URL Subscribe
submission show a toast explaining the upgrade rather than opening
an empty sidebar / hitting a 402.
• Submit button enforces BYO key for unlicensed users (the bundled
state.hasServerKey doesn't enable submit). handleSubmit shows a
toast when an unlicensed user tries to queue a second video.