feat: organize project conversations and add coding teacher side chat

electron/coding-projects/project-service.ts

@@ -8,6 +8,7 @@ import {
   type CodingConversationV2,
 } from './conversation-store';
 import {
+  ensureDefaultCodingAgent,
   isCanonicalCodingProjectId,
   normalizeCodingProjectConfigV2,
   normalizeProjectIdentityChoice,
@@ -60,6 +61,7 @@ export interface CodingProjectConfigSnapshot {
 }
 
 export interface CodingProjectServiceOptions {
+  getDefaultModel?(): Promise<import('../../shared/coding-conversation-contracts').ProductModelRef | null>;
   createProjectId?: () => string;
   now?: () => string;
   onResourcesChanged?(project: CodingProject): Promise<void> | void;
@@ -287,6 +289,7 @@ export class CodingProjectService {
         const { project, config } = await createLocalCodingProject({
           projectPath,
           projectId,
+          defaultModel: await this.options.getDefaultModel?.().catch(() => null),
           ...(input.projectType ? { projectType: input.projectType } : {}),
         }, this.store);
         const snapshot = { project, config, knowledgeFiles: [] };
@@ -338,7 +341,8 @@ export class CodingProjectService {
   async getConfig(projectId?: string): Promise<CodingProjectConfigSnapshot> {
     const project = projectId ? await this.getProject(projectId) : await this.requireActiveProject();
     const config = await this.requireCurrentConfig(project);
-    return config.projectId
+    return config.projectId && config.initialized && config.agents.some((agent) =>
+      agent.id === config.defaultAgentId && agent.enabled && !agent.archivedAt)
       ? await this.projectConfigSnapshot(project, config)
       : await this.ensureProjectIdentity(project);
   }
@@ -530,20 +534,21 @@ export class CodingProjectService {
   ): Promise<CodingProjectConfigSnapshot> {
     return await this.serializeIdentityTransition(project.path, async () => {
       const current = await this.requireCurrentConfig(project);
-      if (current.projectId) {
+      const normalized = ensureDefaultCodingAgent(current, this.options.now?.());
+      if (current.projectId && normalized === current) {
         return await this.projectConfigSnapshot(project, current);
       }
-      const nextProjectId = resolveProjectIdentity(
+      const nextProjectId = current.projectId ?? resolveProjectIdentity(
         { kind: 'create' },
         this.options.createProjectId ?? randomUUID,
       );
-      await this.options.onProjectIdentityChanging?.(
+      if (!current.projectId) await this.options.onProjectIdentityChanging?.(
         project,
         undefined,
         nextProjectId,
       );
       const next = {
-        ...current,
+        ...normalized,
         projectId: nextProjectId,
         updatedAt: this.options.now?.() ?? new Date().toISOString(),
       };