Replace deprecated query provider with index-based architecture.
Events are now indexed using index.indexObjects() and queryable
via Lua Integrated Query (LIQ).
Breaking changes:
- Plugin now requires SilverBullet v2 (use v0.1.0 for SB v1)
- Old query syntax no longer works (use LIQ instead)
- Manual sync required via 'iCalendar: Sync' command
- Events cached for 6h by default (was real-time)
Co-Authored-By: Claude <noreply@anthropic.com>
Signed-off-by: Alexandre Nicolaie <xunleii@users.noreply.github.com>
