feat: organize project conversations and add coding teacher side chat

electron/coding-projects/project-store.ts

@@ -196,6 +196,7 @@ export async function createLocalCodingProject(
     projectPath: string;
     projectType?: ProjectType;
     projectId?: string;
+    defaultModel?: import('../../shared/coding-conversation-contracts').ProductModelRef | null;
     now?: string;
   },
   store: CodingProjectStore,
@@ -203,6 +204,7 @@ export async function createLocalCodingProject(
   const config = await createCodingProjectMetadata(input.projectPath, {
     projectType: input.projectType,
     projectId: input.projectId,
+    defaultModel: input.defaultModel,
     now: input.now,
   });
   const project = await store.openFolder(input.projectPath);