Auth flow refactor, project requests, and routing updates

- Add server-side auth token loader (auth.server.ts) with SSR cookie forwarding
- Add project-requests client for explicit/signal/existing issue dispatch
- Refactor auth layout and app layout for SSR auth gating
- Update auth-client and auth-provider for convex token flow
- Extend project-issue primitives with request result schema
- Wire projectIssues backend mutation for request handling
- Update slice-one page and project-workspace hook
- Adjust routes (remove unused), Caddy config, and env templates

packages/env/src/vite-env.d.ts

@@ -1,6 +1,6 @@
 interface ImportMetaEnv {
   readonly [key: string]: string | number | boolean | undefined;
-  readonly VITE_CONVEX_SITE_URL: string;
+  readonly VITE_AUTH_URL: string;
   readonly VITE_FLUE_URL: string;
   readonly VITE_CONVEX_URL: string;
 }

packages/env/src/web.ts

@@ -8,10 +8,9 @@ const convexUrlSchema = (exampleHost: string) =>
 
 export const env = createEnv({
   client: {
-    VITE_CONVEX_SITE_URL: convexUrlSchema("example.convex.site"),
+    VITE_AUTH_URL: z.url(),
     VITE_CONVEX_URL: convexUrlSchema("example.convex.cloud"),
     VITE_FLUE_URL: z.url(),
-    VITE_ZOPU_SERVER_URL: z.url(),
   },
   clientPrefix: "VITE_",
   emptyStringAsUndefined: true,