fix: Docker build and runtime fixes

- Fix duplicate 'signature' variable in webhooks.ts
- Add Prisma binary target for Alpine Linux
- Fix tsconfig path alias (@/* -> ./src/*)
- Add missing next-themes dependency
- Add build args for NEXT_PUBLIC_* env vars
- Fix SSR issues with zustand and providers
- Add providers-wrapper with dynamic ssr:false import
- Add SSL certs and public dir for nginx
- Update Dockerfiles for proper Prisma engine handling

.pi-token-usage.json

@@ -0,0 +1,11 @@
+{
+  "enabled": true,
+  "items": [
+    "projectTodayTokens",
+    "projectTodayCost",
+    "totalTodayTokens",
+    "totalTodayCost"
+  ],
+  "separator": "  •  ",
+  "style": "muted"
+}