feat(coding): add core host api composition

electron/api/coding-product-services.ts

@@ -7,10 +7,15 @@ import type {
   ProductCodingSkill,
   ProductPiCommandInput,
 } from '../../shared/coding-product-tools';
-import { createCodingConversationStore } from '../coding-projects/conversation-store';
 import type { CodingAttachmentStore } from '../coding-projects/attachment-store';
 import { readCodingProjectConfigV2 } from '../coding-projects/project-config';
 import { CodingProjectFileService } from '../coding-projects/project-files';
+import {
+  CodingProjectServiceError,
+  type CodingProjectService,
+} from '../coding-projects/project-service';
+import type { CodingConversationService } from '../coding-runtime/conversation-service';
+import type { CodingConversationRuntime } from '../coding-runtime/contracts';
 import type { PiProductTools } from '../coding-runtime/pi/product-tools';
 
 export interface ActiveCodingProject {
@@ -31,7 +36,11 @@ export interface CodingProductHost {
 export interface CodingProductComposition {
   attachments: CodingAttachmentStore;
   productTools: PiProductTools;
+  projects: CodingProjectService;
+  conversations: CodingConversationService;
+  runtime: CodingConversationRuntime;
   host: CodingProductHost;
+  shutdown(): Promise<void>;
 }
 
 export class CodingProductHostError extends Error {
@@ -45,7 +54,7 @@ export class CodingProductHostError extends Error {
 }
 
 export interface CodingProductHostOptions {
-  getActiveProject(): Promise<ActiveCodingProject | null>;
+  projects: Pick<CodingProjectService, 'getActiveProject' | 'findActiveConversation'>;
   productTools: PiProductTools;
   files?: CodingProjectFileService;
   listPiCommands?(conversationId: string): Promise<unknown>;
@@ -77,7 +86,7 @@ export function createCodingProductHost(options: CodingProductHostOptions): Codi
   const files = options.files ?? new CodingProjectFileService();
 
   async function activeProject(): Promise<ActiveCodingProject> {
-    const project = await options.getActiveProject();
+    const project = await options.projects.getActiveProject();
     if (!project) {
       throw new CodingProductHostError(
         409,
@@ -118,15 +127,17 @@ export function createCodingProductHost(options: CodingProductHostOptions): Codi
     project: ActiveCodingProject;
     skillIds: readonly string[];
   }> {
-    const project = await activeProject();
-    const conversation = await createCodingConversationStore(project.path).get(conversationId);
-    if (!conversation) {
-      throw new CodingProductHostError(
-        404,
-        'CODING_CONVERSATION_NOT_FOUND',
-        'Coding Conversation does not exist',
-      );
+    let context;
+    try {
+      context = await options.projects.findActiveConversation(conversationId);
+    } catch (error) {
+      if (error instanceof CodingProjectServiceError
+        && (error.status === 404 || error.status === 409)) {
+        throw new CodingProductHostError(error.status, error.code, error.message);
+      }
+      throw error;
     }
+    const { project, conversation } = context;
     return {
       project,
       skillIds: await selectedSkillIds(project.path, conversation.agentId),