fix: include dashboard files in npm package

dashboard/server.ts and dashboard/index.html were missing from the
files array in package.json, causing 'Cannot find module' error
when the plugin loads after npm install.

Author: bm-clawd

package.json

@@ -2,7 +2,7 @@
   "name": "@basicmemory/openclaw-basic-memory",
   "version": "0.1.0-alpha.9",
   "type": "module",
-  "description": "Basic Memory plugin for OpenClaw — local-first knowledge graph for agent memory",
+  "description": "Basic Memory plugin for OpenClaw \u2014 local-first knowledge graph for agent memory",
   "license": "MIT",
   "repository": {
     "type": "git",
@@ -34,6 +34,8 @@
     "tools/write-note.ts",
     "types/openclaw.d.ts",
     "schema/task-schema.ts",
+    "dashboard/server.ts",
+    "dashboard/index.html",
     "skills/",
     "scripts/setup-bm.sh",
     "openclaw.plugin.json",