Add worktree handoff and status tools to the t3-code MCP server

apps/server/src/mcp/McpHttpServer.ts

@@ -22,6 +22,8 @@ import {
   PreviewSnapshotToolkit,
   PreviewStandardToolkit,
 } from "./toolkits/preview/tools.ts";
+import { WorktreeToolkitHandlersLive } from "./toolkits/worktree/handlers.ts";
+import { WorktreeToolkit } from "./toolkits/worktree/tools.ts";
 
 const unauthorized = HttpServerResponse.jsonUnsafe(
   {
@@ -208,10 +210,17 @@ export const PreviewToolkitRegistrationLive = Layer.mergeAll(
   PreviewSnapshotRegistrationLive,
 );
 
+export const WorktreeToolkitRegistrationLive = McpServer.toolkit(WorktreeToolkit).pipe(
+  Layer.provide(WorktreeToolkitHandlersLive),
+);
+
 const McpTransportLive = McpServer.layerHttp({
   name: "T3 Code",
   version: packageJson.version,
   path: "/mcp",
 }).pipe(Layer.provide(McpAuthMiddlewareLive));
 
-export const layer = PreviewToolkitRegistrationLive.pipe(Layer.provideMerge(McpTransportLive));
+export const layer = Layer.mergeAll(
+  PreviewToolkitRegistrationLive,
+  WorktreeToolkitRegistrationLive,
+).pipe(Layer.provideMerge(McpTransportLive));

apps/server/src/mcp/McpInvocationContext.ts

@@ -7,7 +7,7 @@ import {
 import * as Context from "effect/Context";
 import * as Effect from "effect/Effect";
 
-export type McpCapability = "preview";
+export type McpCapability = "preview" | "worktree";
 
 export interface McpInvocationScope {
   readonly environmentId: EnvironmentId;
@@ -25,7 +25,7 @@ export class McpInvocationContext extends Context.Service<
 >()("t3/mcp/McpInvocationContext") {}
 
 export const requireMcpCapability = Effect.fn("mcp.requireCapability")(function* (
-  capability: McpCapability,
+  capability: "preview",
 ) {
   const invocation = yield* McpInvocationContext;
   if (!invocation.capabilities.has(capability)) {

apps/server/src/mcp/McpSessionRegistry.ts

@@ -114,7 +114,7 @@ const makeWithOptions = Effect.fn("McpSessionRegistry.make")(function* (
         threadId: ThreadId.make(request.threadId),
         providerSessionId,
         providerInstanceId: ProviderInstanceId.make(request.providerInstanceId),
-        capabilities: new Set(["preview"]),
+        capabilities: new Set(["preview", "worktree"]),
         issuedAt,
         expiresAt,
       };