Reset core/viewer/editor/mcp packages and apps/editor from private-editor

Wholesale swap of packages/{core,viewer,editor,mcp} and apps/editor with the
versions from the private editor repo, which is the production source of truth.

Setup changes:
- packages/{core,viewer,editor} versions held at 0.7.0 baseline (matching
  the most recent published release) so a bump=minor publishes 0.8.0
- packages/mcp held at 0.1.1 (never published; first publish will go through
  the new release.yml flow)
- peerDependencies and devDependencies for inter-package @pascal-app/*
  references pinned to ^0.7.0 instead of '*' / 'workspace:*' so they are
  valid for npm consumers
- Root package.json: TypeScript bumped to 6.0.2, added overrides for
  @types/react, @types/react-dom, @types/three to prevent JSX namespace
  fragmentation across the workspace
- release.yml extended to also publish editor and mcp; 'both' option renamed
  to 'all'; added a sync step that updates inter-package peerDeps/devDeps to
  match the new versions on every bump (so viewer/editor/mcp tarballs always
  reference the version of core they were built against)
- Root scripts gained release:editor and release:mcp shortcuts

Verification:
- bun install --frozen-lockfile is consistent
- packages/{core,viewer,mcp} build cleanly, dist/index.d.ts emitted
- packages/editor check-types reports 21 pre-existing errors, identical to
  what private-editor currently reports

Open PRs against editor-v2 will need rebasing/conflict resolution.

packages/mcp/src/tools/scene-lifecycle/load-scene.ts

@@ -2,6 +2,7 @@ import type { McpServer } from '@modelcontextprotocol/sdk/server/mcp.js'
 import { z } from 'zod'
 import type { SceneOperations } from '../../operations'
 import { ErrorCode, throwMcpError } from '../errors'
+import { currentLevelContext, sceneMetaPayload } from './metadata'
 
 export const loadSceneInput = {
   id: z.string().min(1).max(64),
@@ -18,6 +19,14 @@ export const loadSceneOutput = {
   ownerId: z.string().nullable(),
   sizeBytes: z.number(),
   nodeCount: z.number(),
+  url: z.string(),
+  editorUrl: z.string(),
+  published: z.boolean(),
+  isDraft: z.boolean(),
+  saveMode: z.enum(['draft', 'checkpoint']),
+  graphHash: z.string().optional(),
+  levelIds: z.array(z.string()),
+  defaultLevelId: z.string().nullable(),
 }
 
 export function registerLoadScene(server: McpServer, bridge: SceneOperations): void {
@@ -43,16 +52,8 @@ export function registerLoadScene(server: McpServer, bridge: SceneOperations): v
         throwMcpError(ErrorCode.InvalidRequest, `load_failed: ${msg}`, { id })
       }
       const payload = {
-        id: result.id,
-        name: result.name,
-        projectId: result.projectId,
-        thumbnailUrl: result.thumbnailUrl,
-        version: result.version,
-        createdAt: result.createdAt,
-        updatedAt: result.updatedAt,
-        ownerId: result.ownerId,
-        sizeBytes: result.sizeBytes,
-        nodeCount: result.nodeCount,
+        ...sceneMetaPayload(result, result.graph),
+        ...currentLevelContext(bridge),
       }
       return {
         content: [{ type: 'text' as const, text: JSON.stringify(payload) }],