diff --git a/apps/desktop/main/worker/import/streamImport.ts b/apps/desktop/main/worker/import/streamImport.ts
index f53a7166..bda7347c 100644
--- a/apps/desktop/main/worker/import/streamImport.ts
+++ b/apps/desktop/main/worker/import/streamImport.ts
@@ -20,6 +20,7 @@ import {
   computeAndSetOverviewCache,
   createImportPerfLogger,
   deleteSessionCache,
+  listDatabaseCandidateIds,
 } from '@openchatlab/node-runtime'
 import type {
   AutoImportBatchItemResult,
@@ -131,13 +132,7 @@ export async function autoImport(
   return sharedAutoImportFile(
     filePath,
     {
-      listSessionIds: () =>
-        fs.existsSync(getDbDir())
-          ? fs
-              .readdirSync(getDbDir())
-              .filter((name) => name.endsWith('.db'))
-              .map((name) => name.slice(0, -3))
-          : [],
+      listSessionIds: () => listDatabaseCandidateIds(getDbDir()),
       openReadonly: (sessionId) => new BetterSqliteAdapter(openRawDatabase(getDbPath(sessionId), { readonly: true })),
       onProgress: (progress) => sendProgress(requestId, progress),
       sessionExists: (sessionId) => fs.existsSync(getDbPath(sessionId)),
@@ -183,13 +178,7 @@ export async function autoImportBatch(
       },
     })),
     {
-      listSessionIds: () =>
-        fs.existsSync(getDbDir())
-          ? fs
-              .readdirSync(getDbDir())
-              .filter((name) => name.endsWith('.db'))
-              .map((name) => name.slice(0, -3))
-          : [],
+      listSessionIds: () => listDatabaseCandidateIds(getDbDir()),
       openReadonly: (sessionId) => new BetterSqliteAdapter(openRawDatabase(getDbPath(sessionId), { readonly: true })),
       sessionExists: (sessionId) => fs.existsSync(getDbPath(sessionId)),
       createSession: (sourcePath, sourceFormatOptions, sessionId, itemProgress) =>
diff --git a/packages/node-runtime/src/database-manager.test.ts b/packages/node-runtime/src/database-manager.test.ts
index fc32bf75..ec7fd56f 100644
--- a/packages/node-runtime/src/database-manager.test.ts
+++ b/packages/node-runtime/src/database-manager.test.ts
@@ -7,7 +7,7 @@ import Database from 'better-sqlite3'
 import type { PathProvider } from '@openchatlab/core'
 import { CHAT_DB_SCHEMA, CURRENT_SCHEMA_VERSION, getSessionInfo } from '@openchatlab/core'
 import { DataDirCompatibilityError, readDataDirCompatibilityMeta } from './data-dir-compat'
-import { DatabaseManager } from './database-manager'
+import { DatabaseManager, listDatabaseCandidateIds } from './database-manager'
 
 const nativeBinding = path.resolve('apps/cli/native/better_sqlite3.node')
 
@@ -1031,3 +1031,20 @@ test('listSessionIds ignores non-ChatLab sqlite databases without migrating them
   assert.deepEqual(manager.listSessionIds(), [])
   manager.closeAll()
 })
+
+test('database candidate enumeration ignores AppleDouble sidecars but keeps damaged databases visible', () => {
+  const root = makeTempDir()
+  const dbDir = path.join(root, 'data', 'databases')
+  fs.mkdirSync(dbDir, { recursive: true })
+  fs.writeFileSync(path.join(dbDir, '._chat_existing.db'), Buffer.from([0x00, 0x05, 0x16, 0x07]))
+
+  const manager = new DatabaseManager(createPathProvider(root), { nativeBinding, allowMissingRuntimeForTests: true })
+  assert.deepEqual(listDatabaseCandidateIds(dbDir), [])
+  assert.deepEqual(manager.listSessionIds(), [])
+  assert.deepEqual(manager.listSessionIdsReadonly(), [])
+
+  fs.writeFileSync(path.join(dbDir, 'damaged.db'), 'not a sqlite database')
+  assert.deepEqual(listDatabaseCandidateIds(dbDir), ['damaged'])
+  assert.throws(() => manager.listSessionIds(), /file is not a database/)
+  assert.throws(() => manager.listSessionIdsReadonly(), /file is not a database/)
+})
diff --git a/packages/node-runtime/src/database-manager.ts b/packages/node-runtime/src/database-manager.ts
index 3a36c731..67b78019 100644
--- a/packages/node-runtime/src/database-manager.ts
+++ b/packages/node-runtime/src/database-manager.ts
@@ -52,6 +52,19 @@ interface OpenRawSessionDatabaseOptions {
   initializeChatTables?: boolean
 }
 
+/**
+ * List database candidates that require further inspection.
+ * macOS AppleDouble `._*` files contain metadata rather than SQLite data.
+ */
+export function listDatabaseCandidateIds(databaseDir: string): string[] {
+  if (!fs.existsSync(databaseDir)) return []
+
+  return fs
+    .readdirSync(databaseDir)
+    .filter((fileName) => fileName.endsWith('.db') && !fileName.startsWith('._'))
+    .map((fileName) => fileName.slice(0, -3))
+}
+
 export class DatabaseManager {
   private cache = new Map<string, DatabaseAdapter>()
   private nativeBinding?: string
@@ -185,17 +198,11 @@ export class DatabaseManager {
     this.assertCompatible()
 
     const dbDir = this.pathProvider.getDatabaseDir()
-    if (!fs.existsSync(dbDir)) return []
-
-    return fs
-      .readdirSync(dbDir)
-      .filter((f) => f.endsWith('.db'))
-      .map((f) => f.replace('.db', ''))
-      .filter((id) => {
-        const db = this.open(id)
-        if (!db) return false
-        return isChatSessionDb(db)
-      })
+    return listDatabaseCandidateIds(dbDir).filter((id) => {
+      const db = this.open(id)
+      if (!db) return false
+      return isChatSessionDb(db)
+    })
   }
 
   /**
@@ -205,20 +212,14 @@ export class DatabaseManager {
     this.assertCompatible()
 
     const dbDir = this.pathProvider.getDatabaseDir()
-    if (!fs.existsSync(dbDir)) return []
-
-    return fs
-      .readdirSync(dbDir)
-      .filter((fileName) => fileName.endsWith('.db'))
-      .map((fileName) => fileName.replace('.db', ''))
-      .filter((sessionId) => {
-        const db = this.openRawSessionDatabase(sessionId, { readonly: true })
-        try {
-          return isChatSessionDb(db)
-        } finally {
-          db.close()
-        }
-      })
+    return listDatabaseCandidateIds(dbDir).filter((sessionId) => {
+      const db = this.openRawSessionDatabase(sessionId, { readonly: true })
+      try {
+        return isChatSessionDb(db)
+      } finally {
+        db.close()
+      }
+    })
   }
 
   getUserDataDir(): string {
diff --git a/packages/node-runtime/src/index.ts b/packages/node-runtime/src/index.ts
index d85536a7..abe4e5cf 100644
--- a/packages/node-runtime/src/index.ts
+++ b/packages/node-runtime/src/index.ts
@@ -120,7 +120,7 @@ export {
   getSystemLogsDir,
   hasPendingElectronDataWarning,
 } from './node-path-provider'
-export { DatabaseManager } from './database-manager'
+export { DatabaseManager, listDatabaseCandidateIds } from './database-manager'
 export { createJiebaNlpProvider } from './jieba-nlp-provider'
 export {
   applyPendingNodeDataDirMigration,