Add ccc-server/client/queue bins and blessed queue TUI

- bin/ccc-server, ccc-client, ccc-queue wired up via package.json bin
- client/config.mjs: shared secrets/user resolution from CLI args or
  CCC_SECRETS/CCC_USER env vars
- ccc-queue: blessed TUI with two-pane layout (list + detail), polls
  every 2s, y/n to approve/deny selected item, r to refresh, q to quit

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

package.json

@@ -7,7 +7,13 @@
     "server": "node server/index.mjs",
     "client": "node client/index.mjs"
   },
+  "bin": {
+    "ccc-server": "bin/ccc-server.mjs",
+    "ccc-client": "bin/ccc-client.mjs",
+    "ccc-queue":  "bin/ccc-queue.mjs"
+  },
   "dependencies": {
+    "blessed": "^0.1.81",
     "express": "^5.2.1"
   }
 }