diff --git a/ccw/tests/embedding-batch.test.ts b/ccw/tests/embedding-batch.test.ts
new file mode 100644
index 00000000..59e0768c
--- /dev/null
+++ b/ccw/tests/embedding-batch.test.ts
@@ -0,0 +1,192 @@
+/**
+ * Unit tests for memory embedding batch/status bridge (ccw/dist/core/memory-embedder-bridge.js).
+ *
+ * Notes:
+ * - Targets runtime implementation shipped in `ccw/dist`.
+ * - Stubs `fs.existsSync` and `child_process.spawn` to avoid depending on local Python setup.
+ */
+
+import { after, beforeEach, describe, it } from 'node:test';
+import assert from 'node:assert/strict';
+import { EventEmitter } from 'node:events';
+import { createRequire } from 'node:module';
+
+const require = createRequire(import.meta.url);
+// eslint-disable-next-line @typescript-eslint/no-var-requires
+const fs = require('node:fs') as typeof import('node:fs');
+// eslint-disable-next-line @typescript-eslint/no-var-requires
+const childProcess = require('node:child_process') as typeof import('node:child_process');
+
+type SpawnBehavior =
+  | { type: 'close'; code?: number; stdout?: string; stderr?: string }
+  | { type: 'error'; error: Error }
+  | { type: 'hang' };
+
+class FakeChildProcess extends EventEmitter {
+  stdout = new EventEmitter();
+  stderr = new EventEmitter();
+}
+
+type SpawnCall = {
+  command: string;
+  args: string[];
+  // eslint-disable-next-line @typescript-eslint/no-explicit-any
+  options: any;
+};
+
+const spawnCalls: SpawnCall[] = [];
+const spawnPlan: SpawnBehavior[] = [];
+
+let embedderAvailable = true;
+
+const originalExistsSync = fs.existsSync;
+const originalSpawn = childProcess.spawn;
+
+fs.existsSync = ((..._args: any[]) => embedderAvailable) as any;
+
+childProcess.spawn = ((command: string, args: string[] = [], options: any = {}) => {
+  spawnCalls.push({ command: String(command), args: args.map(String), options });
+
+  const proc = new FakeChildProcess();
+  const next = spawnPlan.shift() ?? { type: 'close', code: 0, stdout: '{}' };
+
+  queueMicrotask(() => {
+    if (next.type === 'error') {
+      proc.emit('error', next.error);
+      return;
+    }
+
+    if (next.type === 'close') {
+      if (next.stdout !== undefined) proc.stdout.emit('data', next.stdout);
+      if (next.stderr !== undefined) proc.stderr.emit('data', next.stderr);
+      proc.emit('close', next.code ?? 0);
+      return;
+    }
+
+    // hang: intentionally do nothing
+  });
+
+  return proc as any;
+}) as any;
+
+const bridgeUrl = new URL('../dist/core/memory-embedder-bridge.js', import.meta.url);
+bridgeUrl.searchParams.set('t', String(Date.now()));
+
+// eslint-disable-next-line @typescript-eslint/no-explicit-any
+let mod: any;
+
+beforeEach(async () => {
+  embedderAvailable = true;
+  spawnCalls.length = 0;
+  spawnPlan.length = 0;
+
+  mod = await import(bridgeUrl.href);
+});
+
+describe('memory-embedder-bridge', () => {
+  it('getEmbeddingStatus returns parsed status and adds success=true', async () => {
+    spawnPlan.push({
+      type: 'close',
+      code: 0,
+      stdout: JSON.stringify({
+        total_chunks: 3,
+        embedded_chunks: 1,
+        pending_chunks: 2,
+        by_type: { core_memory: { total: 3, embedded: 1, pending: 2 } },
+      }),
+    });
+
+    const status = await mod.getEmbeddingStatus('C:\\tmp\\db.sqlite');
+    assert.equal(status.success, true);
+    assert.equal(status.total_chunks, 3);
+    assert.equal(status.pending_chunks, 2);
+    assert.equal(status.by_type.core_memory.total, 3);
+
+    assert.equal(spawnCalls.length, 1);
+    assert.equal(spawnCalls[0].args.at(-2), 'status');
+    assert.equal(spawnCalls[0].args.at(-1), 'C:\\tmp\\db.sqlite');
+    assert.equal(spawnCalls[0].options.timeout, 30000);
+  });
+
+  it('generateEmbeddings builds args for sourceId, batchSize, and force', async () => {
+    spawnPlan.push({
+      type: 'close',
+      code: 0,
+      stdout: JSON.stringify({ success: true, chunks_processed: 2, chunks_failed: 0, elapsed_time: 0.01 }),
+    });
+
+    const result = await mod.generateEmbeddings('C:\\tmp\\db.sqlite', {
+      sourceId: 'CMEM-1',
+      batchSize: 4,
+      force: true,
+    });
+
+    assert.equal(result.success, true);
+    assert.equal(result.chunks_failed, 0);
+
+    assert.equal(spawnCalls.length, 1);
+    const args = spawnCalls[0].args.map((a) => a.replace(/\\/g, '/'));
+    assert.ok(args[0].endsWith('memory_embedder.py'));
+    assert.ok(args.includes('embed'));
+    assert.ok(args.includes('C:/tmp/db.sqlite'));
+    const sourceIdIndex = args.indexOf('--source-id');
+    assert.ok(sourceIdIndex !== -1);
+    assert.equal(args[sourceIdIndex + 1], 'CMEM-1');
+
+    const batchSizeIndex = args.indexOf('--batch-size');
+    assert.ok(batchSizeIndex !== -1);
+    assert.equal(args[batchSizeIndex + 1], '4');
+
+    assert.ok(args.includes('--force'));
+    assert.equal(spawnCalls[0].options.timeout, 300000);
+
+    spawnCalls.length = 0;
+    spawnPlan.push({
+      type: 'close',
+      code: 0,
+      stdout: JSON.stringify({ success: true, chunks_processed: 0, chunks_failed: 0, elapsed_time: 0.01 }),
+    });
+
+    await mod.generateEmbeddings('C:\\tmp\\db.sqlite', { batchSize: 8, force: false });
+    assert.equal(spawnCalls.length, 1);
+    const argsDefault = spawnCalls[0].args;
+    assert.equal(argsDefault.includes('--batch-size'), false);
+    assert.equal(argsDefault.includes('--force'), false);
+  });
+
+  it('returns failure objects when embedder is unavailable (no spawn)', async () => {
+    embedderAvailable = false;
+
+    const status = await mod.getEmbeddingStatus('C:\\tmp\\db.sqlite');
+    assert.equal(status.success, false);
+    assert.equal(status.total_chunks, 0);
+    assert.ok(String(status.error).includes('Memory embedder not available'));
+
+    const embed = await mod.generateEmbeddings('C:\\tmp\\db.sqlite');
+    assert.equal(embed.success, false);
+    assert.equal(embed.chunks_processed, 0);
+    assert.ok(String(embed.error).includes('Memory embedder not available'));
+
+    assert.equal(spawnCalls.length, 0);
+  });
+
+  it('handles timeouts and non-zero exit codes gracefully', async () => {
+    const timeoutErr: any = new Error('spawn timeout');
+    timeoutErr.code = 'ETIMEDOUT';
+    spawnPlan.push({ type: 'error', error: timeoutErr });
+
+    const timed = await mod.generateEmbeddings('C:\\tmp\\db.sqlite');
+    assert.equal(timed.success, false);
+    assert.ok(String(timed.error).includes('Python script timed out'));
+
+    spawnPlan.push({ type: 'close', code: 1, stdout: '{"success": false, "error": "partial"}' });
+    const failed = await mod.getEmbeddingStatus('C:\\tmp\\db.sqlite');
+    assert.equal(failed.success, false);
+    assert.ok(String(failed.error).includes('Python script failed (exit code 1)'));
+  });
+});
+
+after(() => {
+  fs.existsSync = originalExistsSync;
+  childProcess.spawn = originalSpawn;
+});