Add tables, indexes, FTS5 virtual table, and triggers to support EPG
(electronic program guide) data in the shared SQLite connection. The
changes introduce epg_channels and epg_programs tables, multiple
indexes for efficient lookups (by source, name, channel, start, and
time range), and an epg_programs_fts virtual table with triggers to
keep the full-text index synchronized with epg_programs.
Register EPG database event handlers in the Electron backend and
add an IPC handler for bulk-saving channels. The handler deletes
existing channels for a source and inserts new channels in chunks to
avoid large single inserts, returning the inserted count.
These changes enable storing, querying, and full-text searching EPG
data and prepare backend IPC endpoints for importing program guide
data.
Introduce a shared database schema library for Drizzle ORM and
configure its TypeScript build settings. Move the canonical schema
into libs/shared/database/src/lib/schema.ts and expose strong
typing and table definitions for playlists, categories, content,
recently_viewed and favorites. Add tsconfig.lib.json to set
outDir, declaration output and node types for the shared lib.
Keep apps/electron-backend compatibility by re-exporting the
schema and types from the new shared library (apps/electron-backend
now imports the shared definitions rather than duplicating them).
These changes centralize the database schema as a single source
of truth, prevent duplication, and enable read-only consumers
(e.g. agent-backend) to depend on compiled type declarations.
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