feat(subtitles): add no-jump subtitle-delay shift commands

src/main/runtime/composers/ipc-runtime-composer.test.ts

@@ -14,6 +14,7 @@ test('composeIpcRuntimeHandlers returns callable IPC handlers and registration b
       showMpvOsd: () => {},
       replayCurrentSubtitle: () => {},
       playNextSubtitle: () => {},
+      shiftSubDelayToAdjacentSubtitle: async () => {},
       sendMpvCommand: () => {},
       isMpvConnected: () => false,
       hasRuntimeOptionsManager: () => true,

src/main/runtime/ipc-bridge-actions-main-deps.test.ts

@@ -17,6 +17,7 @@ test('ipc bridge action main deps builders map callbacks', async () => {
       showMpvOsd: () => {},
       replayCurrentSubtitle: () => {},
       playNextSubtitle: () => {},
+      shiftSubDelayToAdjacentSubtitle: async () => {},
       sendMpvCommand: () => {},
       isMpvConnected: () => true,
       hasRuntimeOptionsManager: () => true,

src/main/runtime/ipc-bridge-actions.test.ts

@@ -14,6 +14,7 @@ test('handle mpv command handler forwards command and built deps', () => {
     showMpvOsd: () => {},
     replayCurrentSubtitle: () => {},
     playNextSubtitle: () => {},
+    shiftSubDelayToAdjacentSubtitle: async () => {},
     sendMpvCommand: () => {},
     isMpvConnected: () => true,
     hasRuntimeOptionsManager: () => true,

src/main/runtime/ipc-mpv-command-main-deps.test.ts

@@ -11,6 +11,9 @@ test('ipc mpv command main deps builder maps callbacks', () => {
     showMpvOsd: (text) => calls.push(`osd:${text}`),
     replayCurrentSubtitle: () => calls.push('replay'),
     playNextSubtitle: () => calls.push('next'),
+    shiftSubDelayToAdjacentSubtitle: async (direction) => {
+      calls.push(`shift:${direction}`);
+    },
     sendMpvCommand: (command) => calls.push(`cmd:${command.join(':')}`),
     isMpvConnected: () => true,
     hasRuntimeOptionsManager: () => false,
@@ -22,6 +25,7 @@ test('ipc mpv command main deps builder maps callbacks', () => {
   deps.showMpvOsd('hello');
   deps.replayCurrentSubtitle();
   deps.playNextSubtitle();
+  void deps.shiftSubDelayToAdjacentSubtitle('next');
   deps.sendMpvCommand(['show-text', 'ok']);
   assert.equal(deps.isMpvConnected(), true);
   assert.equal(deps.hasRuntimeOptionsManager(), false);
@@ -31,6 +35,7 @@ test('ipc mpv command main deps builder maps callbacks', () => {
     'osd:hello',
     'replay',
     'next',
+    'shift:next',
     'cmd:show-text:ok',
   ]);
 });

src/main/runtime/ipc-mpv-command-main-deps.ts

@@ -10,6 +10,8 @@ export function createBuildMpvCommandFromIpcRuntimeMainDepsHandler(
     showMpvOsd: (text: string) => deps.showMpvOsd(text),
     replayCurrentSubtitle: () => deps.replayCurrentSubtitle(),
     playNextSubtitle: () => deps.playNextSubtitle(),
+    shiftSubDelayToAdjacentSubtitle: (direction) =>
+      deps.shiftSubDelayToAdjacentSubtitle(direction),
     sendMpvCommand: (command: (string | number)[]) => deps.sendMpvCommand(command),
     isMpvConnected: () => deps.isMpvConnected(),
     hasRuntimeOptionsManager: () => deps.hasRuntimeOptionsManager(),