fix: Windows spawn, prefab path, preview API, asset deps, error messages; add execute-context resource, tool descriptions, scene/script/asset tools

Bug fixes (verified against Cocos Creator 3.8.8):
- diagnostics: shell:true for .cmd/.bat on Windows (T125/T126)
- prefabs: duplicatePrefab target resolves under assets/ (T420)
- cocos-project: add preview.open candidate for 3.8.8 (T444)
- assets-advanced: detect directory assets in inspectAssetDependencies (T110)
- scene: improve component-not-found errors with compilation hint (T429)

Documentation improvements:
- tool-registry: add enum and injected vars to execute_javascript, path format examples, asset ref limitation note
- resources: add cocos://mcp/execute-context resource with variables, patterns, pitfalls

New tools (core 37->38, full 101->110):
- scene-management: create_scene, query_scene_state (core), copy_paste_node, rename_node, reparent_node
- scripts: create_script with component/plain templates
- prefabs: create_prefab
- assets-advanced: batch_asset_ops, find_unused_assets

package.json

@@ -34,6 +34,7 @@
     "docs/",
     "lib/",
     "panel/",
+    "resources/",
     "browser.js",
     "scene.js",
     "server.json",
@@ -49,7 +50,7 @@
     "access": "public"
   },
   "scripts": {
-    "check": "node --check browser.js && node --check scene.js && node --check panel/index.js && node --check bin/funplay-cocos-mcp.js && node --check lib/assets.js && node --check lib/client-config.js && node --check lib/config.js && node --check lib/diagnostics.js && node --check lib/electron-tools.js && node --check lib/input.js && node --check lib/interaction-log.js && node --check lib/javascript-safety.js && node --check lib/logs.js && node --check lib/path-safety.js && node --check lib/prefabs.js && node --check lib/project-instructions.js && node --check lib/prompts.js && node --check lib/resources.js && node --check lib/runtime-log.js && node --check lib/screenshots.js && node --check lib/server.js && node --check lib/tool-profiles.js && node --check lib/tool-registry.js && node --check lib/tools/assets-advanced.js && node --check lib/tools/cocos-project.js && node --check lib/tools/files.js && node --check lib/tools/scene-events.js && node --check lib/update-checker.js && node --check lib/utils.js && node --check scripts/generate-tool-docs.js && node --check scripts/release.js",
+    "check": "node --check browser.js && node --check scene.js && node --check panel/index.js && node --check bin/funplay-cocos-mcp.js && node --check lib/assets.js && node --check lib/client-config.js && node --check lib/config.js && node --check lib/diagnostics.js && node --check lib/electron-tools.js && node --check lib/input.js && node --check lib/interaction-log.js && node --check lib/javascript-safety.js && node --check lib/logs.js && node --check lib/path-safety.js && node --check lib/prefabs.js && node --check lib/project-instructions.js && node --check lib/prompts.js && node --check lib/resources.js && node --check lib/runtime-log.js && node --check lib/screenshots.js && node --check lib/server.js && node --check lib/tool-profiles.js && node --check lib/tool-registry.js && node --check lib/tools/assets-advanced.js && node --check lib/tools/cocos-project.js && node --check lib/tools/files.js && node --check lib/tools/scene-events.js && node --check lib/tools/scene-management.js && node --check lib/tools/scripts.js && node --check lib/update-checker.js && node --check lib/utils.js && node --check scripts/generate-tool-docs.js && node --check scripts/release.js",
     "test": "node --test",
     "docs:generate": "node scripts/generate-tool-docs.js",
     "docs:check": "node scripts/generate-tool-docs.js --check",