fix(mcp): add shared operations and secure scene APIs

packages/mcp/src/prompts/from-brief.ts

@@ -1,6 +1,6 @@
 import type { McpServer } from '@modelcontextprotocol/sdk/server/mcp.js'
 import { z } from 'zod'
-import type { SceneBridge } from '../bridge/scene-bridge'
+import type { SceneOperations } from '../operations'
 import { SCENE_DESIGN_GUIDANCE } from './scene-guidance'
 
 const PREAMBLE = [
@@ -37,7 +37,7 @@ export function buildFromBriefPrompt(args: {
   return parts.join('\n')
 }
 
-export function registerFromBrief(server: McpServer, _bridge: SceneBridge): void {
+export function registerFromBrief(server: McpServer, _bridge: SceneOperations): void {
   server.registerPrompt(
     'from_brief',
     {

packages/mcp/src/prompts/index.ts

@@ -1,5 +1,5 @@
 import type { McpServer } from '@modelcontextprotocol/sdk/server/mcp.js'
-import type { SceneBridge } from '../bridge/scene-bridge'
+import type { SceneOperations } from '../operations'
 import { registerFromBrief } from './from-brief'
 import { registerIterateOnFeedback } from './iterate-on-feedback'
 import { registerRenovationFromPhotos } from './renovation-from-photos'
@@ -10,8 +10,8 @@ import { registerRenovationFromPhotos } from './renovation-from-photos'
  * - `iterate_on_feedback`       — minimal-diff patches from user feedback
  * - `renovation_from_photos`    — photo-driven renovation plan via vision tools
  */
-export function registerPrompts(server: McpServer, bridge: SceneBridge): void {
-  registerFromBrief(server, bridge)
-  registerIterateOnFeedback(server, bridge)
-  registerRenovationFromPhotos(server, bridge)
+export function registerPrompts(server: McpServer, operations: SceneOperations): void {
+  registerFromBrief(server, operations)
+  registerIterateOnFeedback(server, operations)
+  registerRenovationFromPhotos(server, operations)
 }

packages/mcp/src/prompts/iterate-on-feedback.ts

@@ -1,6 +1,6 @@
 import type { McpServer } from '@modelcontextprotocol/sdk/server/mcp.js'
 import { z } from 'zod'
-import type { SceneBridge } from '../bridge/scene-bridge'
+import type { SceneOperations } from '../operations'
 import { SCENE_DESIGN_GUIDANCE } from './scene-guidance'
 
 const PREAMBLE = [
@@ -25,7 +25,7 @@ export function buildIterateOnFeedbackPrompt(args: { feedback: string }): string
   return [PREAMBLE, '', '## User feedback', args.feedback.trim()].join('\n')
 }
 
-export function registerIterateOnFeedback(server: McpServer, _bridge: SceneBridge): void {
+export function registerIterateOnFeedback(server: McpServer, _bridge: SceneOperations): void {
   server.registerPrompt(
     'iterate_on_feedback',
     {

packages/mcp/src/prompts/renovation-from-photos.ts

@@ -1,6 +1,6 @@
 import type { McpServer } from '@modelcontextprotocol/sdk/server/mcp.js'
 import { z } from 'zod'
-import type { SceneBridge } from '../bridge/scene-bridge'
+import type { SceneOperations } from '../operations'
 
 const PREAMBLE = [
   'You are renovating an existing room based on photos of the current space and reference photos of the target aesthetic.',
@@ -138,7 +138,7 @@ export function buildRenovationMessages(args: {
   return messages
 }
 
-export function registerRenovationFromPhotos(server: McpServer, _bridge: SceneBridge): void {
+export function registerRenovationFromPhotos(server: McpServer, _bridge: SceneOperations): void {
   server.registerPrompt(
     'renovation_from_photos',
     {