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

packages/mcp/src/resources/agent-guide.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'
 
 export const AGENT_GUIDE = [
   '# Pascal MCP agent guide',
@@ -46,7 +46,7 @@ export const AGENT_GUIDE = [
   '- Use `apply_patch` for bulk exact edits after semantic tools have established the main structure.',
 ].join('\n')
 
-export function registerAgentGuide(server: McpServer, _bridge: SceneBridge): void {
+export function registerAgentGuide(server: McpServer, _bridge: SceneOperations): void {
   server.registerResource(
     'agent-guide',
     'pascal://agent/guide',

packages/mcp/src/resources/catalog-items.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 { MCP_CATALOG_ITEMS } from '../tools/asset-catalog'
 
 /**
@@ -8,7 +8,7 @@ import { MCP_CATALOG_ITEMS } from '../tools/asset-catalog'
  * The editor UI owns the full catalog. MCP intentionally keeps a dependency-free
  * subset so headless agents can still place realistic furniture and fixtures.
  */
-export function registerCatalogItems(server: McpServer, _bridge: SceneBridge): void {
+export function registerCatalogItems(server: McpServer, _bridge: SceneOperations): void {
   server.registerResource(
     'catalog-items',
     'pascal://catalog/items',

packages/mcp/src/resources/constraints.ts

@@ -2,7 +2,7 @@ import type { McpServer } from '@modelcontextprotocol/sdk/server/mcp.js'
 import { ResourceTemplate } from '@modelcontextprotocol/sdk/server/mcp.js'
 import type { AnyNode, SlabNode, WallNode } from '@pascal-app/core/schema'
 import { getWallPlanFootprint } from '@pascal-app/core/wall'
-import type { SceneBridge } from '../bridge/scene-bridge'
+import type { SceneOperations } from '../operations'
 
 type WallFootprint = {
   wallId: string
@@ -36,7 +36,10 @@ const EMPTY_MITER_DATA: Parameters<typeof getWallPlanFootprint>[1] = {
   junctions: new Map(),
 }
 
-function buildPayload(bridge: SceneBridge, levelId: string): ConstraintsPayload | ConstraintsError {
+function buildPayload(
+  bridge: SceneOperations,
+  levelId: string,
+): ConstraintsPayload | ConstraintsError {
   const level = bridge.getNode(levelId as never)
   if (!level || level.type !== 'level') {
     return {
@@ -72,7 +75,7 @@ function buildPayload(bridge: SceneBridge, levelId: string): ConstraintsPayload
  * input hints for agents: slab nodes (with polygons/holes/elevation) + each
  * wall's plan-view footprint polygon.
  */
-export function registerConstraints(server: McpServer, bridge: SceneBridge): void {
+export function registerConstraints(server: McpServer, bridge: SceneOperations): void {
   server.registerResource(
     'constraints',
     new ResourceTemplate('pascal://constraints/{levelId}', { list: undefined }),

packages/mcp/src/resources/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 { registerAgentGuide } from './agent-guide'
 import { registerCatalogItems } from './catalog-items'
 import { registerConstraints } from './constraints'
@@ -16,10 +16,10 @@ import { registerSceneSummary } from './scene-summary'
  * - `pascal://constraints/{levelId}`  — application/json, per-level constraints
  * - `pascal://agent/guide`            — text/markdown, MCP-first construction guide
  */
-export function registerResources(server: McpServer, bridge: SceneBridge): void {
-  registerAgentGuide(server, bridge)
-  registerSceneCurrent(server, bridge)
-  registerSceneSummary(server, bridge)
-  registerCatalogItems(server, bridge)
-  registerConstraints(server, bridge)
+export function registerResources(server: McpServer, operations: SceneOperations): void {
+  registerAgentGuide(server, operations)
+  registerSceneCurrent(server, operations)
+  registerSceneSummary(server, operations)
+  registerCatalogItems(server, operations)
+  registerConstraints(server, operations)
 }

packages/mcp/src/resources/scene-current.ts

@@ -1,12 +1,12 @@
 import type { McpServer } from '@modelcontextprotocol/sdk/server/mcp.js'
-import type { SceneBridge } from '../bridge/scene-bridge'
+import type { SceneOperations } from '../operations'
 
 /**
  * `pascal://scene/current` — full `{ nodes, rootNodeIds, collections }` snapshot.
  *
  * Static URI (not a template). MIME `application/json`.
  */
-export function registerSceneCurrent(server: McpServer, bridge: SceneBridge): void {
+export function registerSceneCurrent(server: McpServer, bridge: SceneOperations): void {
   server.registerResource(
     'scene-current',
     'pascal://scene/current',

packages/mcp/src/resources/scene-summary.ts

@@ -1,6 +1,6 @@
 import type { McpServer } from '@modelcontextprotocol/sdk/server/mcp.js'
 import type { AnyNode, AnyNodeType } from '@pascal-app/core/schema'
-import type { SceneBridge } from '../bridge/scene-bridge'
+import type { SceneOperations } from '../operations'
 
 type Poly2D = ReadonlyArray<readonly [number, number]>
 
@@ -77,7 +77,9 @@ function countByType(nodes: AnyNode[]): Record<string, number> {
 }
 
 /** Build the markdown summary. Pure over the SceneGraph snapshot. */
-export function buildSceneSummaryMarkdown(snapshot: ReturnType<SceneBridge['exportJSON']>): string {
+export function buildSceneSummaryMarkdown(
+  snapshot: ReturnType<SceneOperations['exportJSON']>,
+): string {
   const { nodes, rootNodeIds } = snapshot
   const allNodes = Object.values(nodes) as AnyNode[]
 
@@ -193,7 +195,7 @@ function walkToLevel(node: AnyNode, nodes: Record<string, AnyNode>): string | nu
  * `pascal://scene/current/summary` — human-readable scene overview.
  * MIME `text/markdown`.
  */
-export function registerSceneSummary(server: McpServer, bridge: SceneBridge): void {
+export function registerSceneSummary(server: McpServer, bridge: SceneOperations): void {
   server.registerResource(
     'scene-summary',
     'pascal://scene/current/summary',