fix: guard embedding sync and queries against missing vec table

Author: chriswritescode-dev

packages/memory/src/index.ts

@@ -270,6 +270,12 @@ export function createMemoryPlugin(config: PluginConfig): Plugin {
     const initPromise = createVecService(db, dataDir, dimensions)
       .then(async (vec) => {
         memoryService.setVecService(vec)
+
+        if (!vec.available) {
+          logger.log('Vec service unavailable, skipping embedding sync')
+          return
+        }
+
         logger.log('Vec service initialized')
 
         const embeddingSync = createEmbeddingSyncService(memoryService, logger)

packages/memory/src/storage/memory-queries.ts

@@ -316,6 +316,31 @@ export function createMemoryQuery(db: Database, vec: VecService, logger?: Logger
       projectId?: string,
       limit: number = 50
     ): Memory[] {
+      const embeddingsTableExists = db.prepare(
+        "SELECT name FROM sqlite_master WHERE type='table' AND name='memory_embeddings'"
+      ).get()
+
+      if (!embeddingsTableExists) {
+        const conditions: string[] = []
+        const params: (string | number)[] = []
+
+        if (projectId) {
+          conditions.push('project_id = ?')
+          params.push(projectId)
+        }
+
+        const where = conditions.length > 0 ? `WHERE ${conditions.join(' AND ')}` : ''
+        const rows = db.prepare(`
+          SELECT id, project_id, scope, content, file_path, access_count, last_accessed_at, created_at, updated_at
+          FROM memories
+          ${where}
+          ORDER BY created_at ASC
+          LIMIT ? OFFSET 0
+        `).all(...params, limit) as MemoryRow[]
+
+        return rows.map(mapRow)
+      }
+
       const conditions: string[] = ['e.memory_id IS NULL']
       const params: (string | number)[] = []
 
@@ -337,6 +362,27 @@ export function createMemoryQuery(db: Database, vec: VecService, logger?: Logger
     },
 
     countMemoriesWithoutEmbeddings(projectId?: string): number {
+      const embeddingsTableExists = db.prepare(
+        "SELECT name FROM sqlite_master WHERE type='table' AND name='memory_embeddings'"
+      ).get()
+
+      if (!embeddingsTableExists) {
+        const conditions: string[] = []
+        const params: (string | number)[] = []
+
+        if (projectId) {
+          conditions.push('project_id = ?')
+          params.push(projectId)
+        }
+
+        const where = conditions.length > 0 ? `WHERE ${conditions.join(' AND ')}` : ''
+        const result = db.prepare(`
+          SELECT COUNT(*) as count FROM memories ${where}
+        `).get(...params) as { count: number }
+
+        return result.count
+      }
+
       const conditions: string[] = ['e.memory_id IS NULL']
       const params: (string | number)[] = []