Make the prepare script tolerate missing agent directories

skills-npm exits with status 1 when it can't detect any agent
directory (.claude, .cursor, .opencode, etc.) to install skills
into.  In a container build the source tree is copied without
those directories, so "pnpm install" failed at the prepare hook
with "No agents detected. Use --agents to specify target agents"
and the image build never reached "pnpm run build".

Tagging the script with "|| true" lets skills-npm finish silently
in environments with no agent setup while still installing skills
in local development.

Assisted-by: Claude Code:claude-opus-4-7

Author: dahlia

package.json

@@ -5,7 +5,7 @@
   "private": true,
   "type": "module",
   "scripts": {
-    "prepare": "skills-npm",
+    "prepare": "skills-npm || true",
     "prod": "pnpm run migrate && node --env-file-if-exists=.env --dns-result-order=ipv6first dist/bin/server.js",
     "dev": "pnpm run migrate && pnpm run uno:build && concurrently -k -n uno,app -c blue,green \"pnpm run uno:watch\" \"tsx watch --env-file-if-exists=.env --dns-result-order=ipv6first bin/server.ts\"",
     "worker": "NODE_TYPE=worker node --env-file-if-exists=.env --dns-result-order=ipv6first dist/bin/server.js",