docs(store): clarify journal metadata

Align the RFC text and store comments with the SQLite-backed journal implementation.

Co-Authored-By: Virgil <virgil@lethean.io>

docs/RFC-STORE.md

@@ -43,9 +43,9 @@ SQLite-backed key-value store with TTL, namespace isolation, reactive events, an
 // Store is the SQLite KV store with optional SQLite journal backing.
 type Store struct {
     db      *sql.DB            // SQLite connection (single, WAL mode)
-    journal influxdb2.Client   // InfluxDB client (nil if no journal configured)
-    bucket  string             // InfluxDB bucket name
-    org     string             // InfluxDB org
+    journal JournalConfiguration // SQLite journal metadata (nil-equivalent when zero-valued)
+    bucket  string             // Journal bucket name
+    org     string             // Journal organisation
     mu      sync.RWMutex
     watchers map[string][]chan Event
 }
@@ -62,7 +62,7 @@ type Event struct {
 // New creates a store. Journal is optional — pass WithJournal() to enable.
 //
 //   st, _ := store.New(":memory:")                           // SQLite only
-//   st, _ := store.New("/path/to/db", store.WithJournal(    // SQLite + InfluxDB
+//   st, _ := store.New("/path/to/db", store.WithJournal(
 //       "http://localhost:8086", "core-org", "core-bucket",
 //   ))
 func New(path string, opts ...StoreOption) (*Store, error) { }

store.go

@@ -67,6 +67,10 @@ func (storeConfig StoreConfig) Validate() error {
 }
 
 // Usage example: `config := storeInstance.JournalConfiguration(); fmt.Println(config.EndpointURL, config.Organisation, config.BucketName)`
+// JournalConfiguration stores the SQLite journal metadata used by
+// CommitToJournal and QueryJournal. The field names stay aligned with the
+// agent-facing RFC vocabulary even though the implementation is local to this
+// package.
 // Usage example: `store.NewConfigured(store.StoreConfig{DatabasePath: ":memory:", Journal: store.JournalConfiguration{EndpointURL: "http://127.0.0.1:8086", Organisation: "core", BucketName: "events"}})`
 type JournalConfiguration struct {
 	// Usage example: `config := store.JournalConfiguration{EndpointURL: "http://127.0.0.1:8086"}`