feat(panel): add three-sided web console (User, Admin, SysAdmin)

Vite + TypeScript + Tailwind single-page console presenting the three operator tiers and consuming the external felis-api face. Build output and design notes are not tracked.

panel/.gitignore

@@ -0,0 +1,15 @@
+# Dependencies
+node_modules/
+
+# Build output
+dist/
+
+# TypeScript incremental build info
+*.tsbuildinfo
+
+# Local env overrides
+.env.local
+.env.*.local
+
+# Logs
+npm-debug.log*