fix: remove all hardcoded user paths from plugins — dynamic SDK resolution

- plugins/macp/src/index.ts: use createRequire + dynamic import() for OC SDK
- plugins/macp/src/acp-runtime-types.ts: local ACP runtime type definitions
- plugins/macp/src/macp-runtime.ts: DEFAULT_REPO_ROOT and PI_RUNNER_PATH use
  os.homedir() instead of hardcoded /home/user/
- plugins/mosaic-framework/src/index.ts: removed hardcoded SDK import
- No hardcoded /home/ paths remain in any plugin source file
- Plugin works on any machine with openclaw installed globally

plugins/mosaic-framework/src/index.ts

@@ -17,7 +17,8 @@
 import os from 'node:os';
 import path from 'node:path';
 import { existsSync, readFileSync, writeFileSync, mkdirSync } from 'node:fs';
-import type { OpenClawPluginApi } from '/home/woltjejason/.npm-global/lib/node_modules/openclaw/dist/plugin-sdk/index.js';
+// OpenClawPluginApi type — the OC plugin loader provides the actual api object at runtime
+type OpenClawPluginApi = any;
 
 // ---------------------------------------------------------------------------
 // Config types