Reuse the same Sieve UI for both server-side (ManageSieve/JMAP) and local
email filters. Both filter sets are stored and managed independently.
Changes:
- Add LocalSieveScripts table (DB schema v29) to store local Sieve scripts
- Add LocalSieveRepository with full CRUD and activate-script support
- Add isLocal param to SieveScriptsScreen and SieveScriptEditScreen; each
screen shows a banner explaining whether scripts run on the server or device
- Add routes /accounts/:id/sieve/local and /accounts/:id/sieve/local/edit
- Split "Email filters" account menu entry into "Server email filters" and
"Local email filters" (local is always available, server requires ManageSieve)
- Wire up localSieveRepositoryProvider in DI
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
