feat: Add key_npub to admin token response and update .gitignore

- Include `key_npub` field in token response for admin methods.
- Update `.gitignore` to ignore `/claude/` and `/idea/` directories.

.gitignore

@@ -9,3 +9,5 @@ config
 .env
 .turbo
 prisma
+/.claude/
+/.idea/

src/daemon/admin/index.ts

@@ -227,6 +227,7 @@ class AdminInterface {
             return {
                 id: t.id,
                 key_name: t.keyName,
+                key_npub: npub,
                 client_name: t.clientName,
                 token: [ npub, t.token ].join('#'),
                 policy_id: t.policyId,