refactor(sync-ui): split runtime into focused modules

- Extract sync-ui-runtime.ts into sync-ui-hosts-state, sync-ui-ipc-handlers, sync-ui-run-lifecycle, sync-ui-snapshots
- Reject sync --ui combined with --remote-cmd or --db in cli-parser-builder

launcher/config/cli-parser-builder.test.ts

@@ -87,7 +87,10 @@ test('parseCliPrograms lowers sync options into app-owned CLI tokens', () => {
   const makeTemp = parseCliPrograms(['sync', '--make-temp'], 'subminer');
   assert.deepEqual(makeTemp.invocations.syncCliTokens, ['--make-temp']);
 
-  const removeTemp = parseCliPrograms(['sync', '--remove-temp', '/tmp/subminer-sync-x'], 'subminer');
+  const removeTemp = parseCliPrograms(
+    ['sync', '--remove-temp', '/tmp/subminer-sync-x'],
+    'subminer',
+  );
   assert.deepEqual(removeTemp.invocations.syncCliTokens, ['--remove-temp', '/tmp/subminer-sync-x']);
 });
 
@@ -112,3 +115,16 @@ test('parseCliPrograms captures sync --ui', () => {
     /--ui cannot be combined/,
   );
 });
+
+test('parseCliPrograms rejects sync --ui with --remote-cmd', () => {
+  assert.throws(
+    () => parseCliPrograms(['sync', '--ui', '--remote-cmd', '/opt/SubMiner.AppImage'], 'subminer'),
+    { message: 'Sync --ui cannot be combined with other sync options.' },
+  );
+});
+
+test('parseCliPrograms rejects sync --ui with --db', () => {
+  assert.throws(() => parseCliPrograms(['sync', '--ui', '--db', '/tmp/db.sqlite'], 'subminer'), {
+    message: 'Sync --ui cannot be combined with other sync options.',
+  });
+});

launcher/config/cli-parser-builder.ts

@@ -340,6 +340,8 @@ export function parseCliPrograms(
           check ||
           makeTemp ||
           removeTemp ||
+          options.remoteCmd !== undefined ||
+          options.db !== undefined ||
           options.json === true ||
           options.force === true
         ) {