feat(dev): auto-switch ports on dev:all when defaults are busy

Adds a small launcher (scripts/dev-all.mjs) that probes free ports
for the daemon (OD_PORT, default 7456) and Vite (VITE_PORT, default
5173) before invoking concurrently, so a stray process holding
either port no longer breaks the boot. The resolved ports are
exported into the child env; vite.config.ts now reads VITE_PORT to
keep its dev server and /api proxy aligned with the daemon's actual
port.

Made-with: Cursor

package.json

@@ -11,7 +11,7 @@
   "scripts": {
     "daemon": "node daemon/cli.js --no-open",
     "dev": "vite",
-    "dev:all": "concurrently -k -n daemon,web -c cyan,magenta \"npm:daemon\" \"npm:dev\"",
+    "dev:all": "node scripts/dev-all.mjs",
     "build": "tsc -b && vite build",
     "preview": "vite preview",
     "typecheck": "tsc -b --noEmit",