fix: sync AniList after seeked completion

src/core/services/ipc.test.ts

@@ -302,6 +302,54 @@ test('createIpcDepsRuntime wires AniList handlers', async () => {
   assert.equal(deps.getPlaybackPaused(), true);
 });
 
+test('registerIpcHandlers runs AniList update after manual mark watched succeeds', async () => {
+  const { registrar, handlers } = createFakeIpcRegistrar();
+  const calls: string[] = [];
+  registerIpcHandlers(
+    createRegisterIpcDeps({
+      immersionTracker: createFakeImmersionTracker({
+        markActiveVideoWatched: async () => {
+          calls.push('mark');
+          return true;
+        },
+      }),
+      runAnilistPostWatchUpdateOnManualMark: async () => {
+        calls.push('anilist');
+      },
+    }),
+    registrar,
+  );
+
+  const result = await handlers.handle.get(IPC_CHANNELS.command.markActiveVideoWatched)?.({});
+
+  assert.equal(result, true);
+  assert.deepEqual(calls, ['mark', 'anilist']);
+});
+
+test('registerIpcHandlers skips AniList update when manual mark watched has no active session', async () => {
+  const { registrar, handlers } = createFakeIpcRegistrar();
+  const calls: string[] = [];
+  registerIpcHandlers(
+    createRegisterIpcDeps({
+      immersionTracker: createFakeImmersionTracker({
+        markActiveVideoWatched: async () => {
+          calls.push('mark');
+          return false;
+        },
+      }),
+      runAnilistPostWatchUpdateOnManualMark: async () => {
+        calls.push('anilist');
+      },
+    }),
+    registrar,
+  );
+
+  const result = await handlers.handle.get(IPC_CHANNELS.command.markActiveVideoWatched)?.({});
+
+  assert.equal(result, false);
+  assert.deepEqual(calls, ['mark']);
+});
+
 test('registerIpcHandlers exposes playlist browser snapshot and mutations', async () => {
   const { registrar, handlers } = createFakeIpcRegistrar();
   const calls: Array<[string, unknown[]]> = [];