feat: sync — migration 010 for sync_ops and sync_state tables

internal/core/storage/migrations_010.sql.go

@@ -0,0 +1,29 @@
+package storage
+
+// migration010 — sync_ops table for recording operations to push to sync server.
+const migration010 = `
+CREATE TABLE IF NOT EXISTS sync_ops (
+    id TEXT PRIMARY KEY,
+    op_id TEXT NOT NULL UNIQUE,
+    device_id TEXT NOT NULL,
+    entity_type TEXT NOT NULL,
+    entity_id TEXT NOT NULL,
+    op_type TEXT NOT NULL,
+    payload_json TEXT NOT NULL DEFAULT '{}',
+    created_at TEXT NOT NULL,
+    pushed_at TEXT,
+    applied_at TEXT
+);
+
+CREATE INDEX IF NOT EXISTS idx_sync_ops_pushed ON sync_ops(pushed_at);
+CREATE INDEX IF NOT EXISTS idx_sync_ops_entity ON sync_ops(entity_type, entity_id);
+
+CREATE TABLE IF NOT EXISTS sync_state (
+    device_id TEXT PRIMARY KEY,
+    server_url TEXT NOT NULL DEFAULT '',
+    api_key TEXT NOT NULL DEFAULT '',
+    last_push_rev INTEGER NOT NULL DEFAULT 0,
+    last_pull_rev INTEGER NOT NULL DEFAULT 0,
+    last_sync_at TEXT
+);
+`

internal/core/storage/storage.go

@@ -66,6 +66,7 @@ var migrationFiles = map[int]string{
 	// 7: migration007 (FTS5) — created lazily by search.Rebuild()
 	8: migration008,
 	9: migration009,
+	10: migration010,
 }
 
 func (db *DB) runInitialSchema() error {