fix(hachidori): preserve setup completion while host connects

- Reopen setup only when a reachable host has no dictionaries

src/main/runtime/first-run-setup-service.test.ts

@@ -892,12 +892,13 @@ test('Hachidori setup gates on the linked host instead of local dictionaries', a
     assert.equal(snapshot.dictionaryCount, 2);
     assert.equal(snapshot.canFinish, true);
     assert.equal((await service.markSetupCompleted()).state.status, 'completed');
-    host = { kind: 'disconnected', address: 'ws://127.0.0.1:8771/link', message: 'Host offline' };
+    // The link is still connecting at startup; that must not undo a finished setup.
+    host = { kind: 'disconnected', address: 'ws://127.0.0.1:8771/link', message: 'Connecting' };
     snapshot = await service.ensureSetupStateInitialized();
     assert.equal(snapshot.canFinish, false);
     assert.equal(snapshot.dictionaryCount, 0);
-    assert.equal(snapshot.state.status, 'incomplete');
+    assert.equal(snapshot.state.status, 'completed');
-    assert.notEqual((await service.markSetupCompleted()).state.status, 'completed');
+    assert.equal(service.isSetupCompleted(), true);
     host = {
       kind: 'connected',
       address: 'ws://127.0.0.1:8771/link',
@@ -905,6 +906,9 @@ test('Hachidori setup gates on the linked host instead of local dictionaries', a
       dictionaryCount: 0,
     };
     assert.equal((await service.getSetupStatus()).canFinish, false);
+    // A reachable host with no dictionaries does reopen setup.
+    assert.equal((await service.ensureSetupStateInitialized()).state.status, 'incomplete');
+    assert.notEqual((await service.markSetupCompleted()).state.status, 'completed');
     host = { kind: 'local' };
     assert.equal((await service.getSetupStatus()).dictionaryCount, 7);
     assert.equal((await service.getSetupStatus()).canFinish, true);

src/main/runtime/first-run-setup-service.ts

@@ -448,7 +448,7 @@ export function createFirstRunSetupService(deps: {
         getSetupStateDictionaryBackend(stored) === getDictionaryBackend()
           ? stored
           : writeState(projectState(stored));
-      const { configReady, dictionaryCount, externalYomitanConfigured } =
+      const { configReady, dictionaryCount, externalYomitanConfigured, hachidoriHost } =
         await resolveYomitanSetupStatus({
           configFilePaths,
           getYomitanDictionaryCount: deps.getYomitanDictionaryCount,
@@ -461,7 +461,11 @@ export function createFirstRunSetupService(deps: {
         dictionaryCount,
         externalYomitanConfigured,
       });
-      if (isSetupCompleted(state) && canFinish) {
+      // A linked host is usually still connecting at startup, so an unreachable host
+      // says nothing about its dictionaries; only a reachable empty host reopens setup.
+      const hostUnreachable =
+        hachidoriHost?.kind === 'disconnected' || hachidoriHost?.kind === 'unavailable';
+      if (isSetupCompleted(state) && (canFinish || (configReady && hostUnreachable))) {
         completed = true;
         return refreshWithState(state);
       }