Adds the addon_config collection so a logged-in user's addon configuration
(TorBox key, Czech-dub creds, adult addon, TMDB key) can follow their account
to a fresh device — encrypted client-side, so the server only ever holds
ciphertext.
- pb_migrations/1785200000_addon_config.js: one row per profile (unique index),
OWNS access rules like the other per-profile collections. Stores blob
(AES-GCM ciphertext), salt (per-account KDF salt; not secret), kdf
(derivation descriptor), plus the same two-clock model as #11 (client
updatedAt for LWW, server updated as the pull cursor).
- README.md: data model + a section on why this one blob is encrypted.
- scripts/verify.py: schema assertions + ciphertext round-trip + cross-user
isolation checks for addon_config.
Stacks on the #11 sync-fields backend work (PR #1). Client half is
myanime-app's encrypted addon-config sync PR (issue #20).
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
