replace Redis with an embedded SQLite string->string KV store (group commit, in-tx events, SQL search)

internal/watchers/poller.go

@@ -74,7 +74,7 @@ func (p *Poller) Start() error {
 	// consumer state without buying anything. The historical reason for
 	// wiping — "in-memory state is empty, all files re-emit as add" —
 	// stopped being true when HydrateStateFromStorage landed: state is
-	// hydrated from Redis before this runs, so a startup EmitReset would
+	// hydrated from the store before this runs, so a startup EmitReset would
 	// tell consumers to throw out their world without sending the
 	// re-emission they need to rebuild it.
 	//
@@ -308,7 +308,7 @@ func (p *Poller) TriggerScanAll() (int, error) {
 }
 
 // TriggerReset performs a full reset for a watcher:
-// 1. Clears the Redis stream and emits a reset event
+// 1. Clears the file:events stream and emits a reset event
 // 2. Clears the watcher's state
 // 3. Performs a full scan (all files are "new")
 func (p *Poller) TriggerReset(watcherID string) (int, error) {