SubMaker 1.4.7-beta

v1.4.6 hotfix.

Default storage now redis: runtime fallback is redis unless explicitly set to filesystem; documentation updated to reflect redis as default and keep filesystem as an opt-in for local dev.
Synced subtitle saves now reject missing/invalid session tokens with a 401 response, preventing cross-user pollution of the shared sync cache.
Service worker skips caching responses that advertise Vary: * or no-store, avoiding runtime cache failures and leaking user-specific assets.
Gemini config button visibility no longer flickers during init; it shows whenever a session token is present for the current origin.
Simplified Gemini API key help by removing the inline tooltip widget; translation UI copy clarified for the triple-click retrigger tip.