Fix Claude tests to create threads with Claude model

The two Claude tests ('forwards claude effort options' and 'restarts claude
sessions when claude effort changes') dispatched turns with provider
'claudeAgent' on thread-1, which was created by createHarness with model
'gpt-5-codex'. The provider validation infers 'codex' for that model,
rejecting the 'claudeAgent' provider mismatch.

Fix by having each Claude test create a dedicated thread with model
'claude-sonnet-4-6' so inferProviderForModel returns 'claudeAgent' and
the validation passes.

Co-authored-by: Julius Marminge <juliusmarminge@users.noreply.github.com>

Author: cursoragent

apps/server/src/orchestration/Layers/ProviderCommandReactor.test.ts

@@ -355,11 +355,27 @@ describe("ProviderCommandReactor", () => {
     const harness = await createHarness();
     const now = new Date().toISOString();
 
+    await Effect.runPromise(
+      harness.engine.dispatch({
+        type: "thread.create",
+        commandId: CommandId.makeUnsafe("cmd-thread-create-claude"),
+        threadId: ThreadId.makeUnsafe("thread-claude"),
+        projectId: asProjectId("project-1"),
+        title: "Claude Thread",
+        model: "claude-sonnet-4-6",
+        interactionMode: DEFAULT_PROVIDER_INTERACTION_MODE,
+        runtimeMode: "approval-required",
+        branch: null,
+        worktreePath: null,
+        createdAt: now,
+      }),
+    );
+
     await Effect.runPromise(
       harness.engine.dispatch({
         type: "thread.turn.start",
         commandId: CommandId.makeUnsafe("cmd-turn-start-claude-effort"),
-        threadId: ThreadId.makeUnsafe("thread-1"),
+        threadId: ThreadId.makeUnsafe("thread-claude"),
         message: {
           messageId: asMessageId("user-message-claude-effort"),
           role: "user",
@@ -391,7 +407,7 @@ describe("ProviderCommandReactor", () => {
       },
     });
     expect(harness.sendTurn.mock.calls[0]?.[0]).toMatchObject({
-      threadId: ThreadId.makeUnsafe("thread-1"),
+      threadId: ThreadId.makeUnsafe("thread-claude"),
       model: "claude-sonnet-4-6",
       modelOptions: {
         claudeAgent: {
@@ -585,11 +601,27 @@ describe("ProviderCommandReactor", () => {
     const harness = await createHarness();
     const now = new Date().toISOString();
 
+    await Effect.runPromise(
+      harness.engine.dispatch({
+        type: "thread.create",
+        commandId: CommandId.makeUnsafe("cmd-thread-create-claude-restart"),
+        threadId: ThreadId.makeUnsafe("thread-claude-restart"),
+        projectId: asProjectId("project-1"),
+        title: "Claude Restart Thread",
+        model: "claude-sonnet-4-6",
+        interactionMode: DEFAULT_PROVIDER_INTERACTION_MODE,
+        runtimeMode: "approval-required",
+        branch: null,
+        worktreePath: null,
+        createdAt: now,
+      }),
+    );
+
     await Effect.runPromise(
       harness.engine.dispatch({
         type: "thread.turn.start",
         commandId: CommandId.makeUnsafe("cmd-turn-start-claude-effort-1"),
-        threadId: ThreadId.makeUnsafe("thread-1"),
+        threadId: ThreadId.makeUnsafe("thread-claude-restart"),
         message: {
           messageId: asMessageId("user-message-claude-effort-1"),
           role: "user",
@@ -616,7 +648,7 @@ describe("ProviderCommandReactor", () => {
       harness.engine.dispatch({
         type: "thread.turn.start",
         commandId: CommandId.makeUnsafe("cmd-turn-start-claude-effort-2"),
-        threadId: ThreadId.makeUnsafe("thread-1"),
+        threadId: ThreadId.makeUnsafe("thread-claude-restart"),
         message: {
           messageId: asMessageId("user-message-claude-effort-2"),
           role: "user",