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

internal/api/udl.go

@@ -7,7 +7,7 @@ package api
 // meta-watch's local op-log. Records arrive already signed (and, for
 // private-tier keys, already encrypted) as opaque base64 CBOR blobs; meta-core
 // version-gates and indexes them but never inspects the crypto. See
-// internal/storage/udl.go for the Redis model.
+// internal/storage/udl.go for the key model.
 
 import (
 	"encoding/json"
@@ -65,7 +65,7 @@ type UDLPutBatchResponse struct {
 	Results []UDLPutBatchResult `json:"results"`
 }
 
-// maxUDLBatch bounds one batch. Each record is a Redis round trip while the
+// maxUDLBatch bounds one batch. Each record is a store write while the
 // request is held open; sized to match the sign batch on the other side of the
 // same operation (see maxSignBatch).
 const maxUDLBatch = 1000
@@ -126,7 +126,7 @@ func (s *Server) handleUDLRecordGet(w http.ResponseWriter, r *http.Request) {
 		Exists:  exists,
 	}
 	// json.Valid guards the encoder: a malformed `value` hash field (hand-edited
-	// Redis, a future writer bug) would otherwise fail mid-encode and emit a
+	// the store, a future writer bug) would otherwise fail mid-encode and emit a
 	// truncated body instead of a readable error.
 	if exists && cell.HasValue && json.Valid([]byte(cell.Value)) {
 		raw := json.RawMessage(cell.Value)