Document tala.run, the documentation hosts and the ASP.NET Core API

- README, Architecture and Operations describe the three sites one
  build serves, their routes, the per-host sitemap and robots files,
  forum.tala.run, the permanent redirects of the former domain, and that
  tala.run has no ViGet host.
- The backend sections describe the ASP.NET Core 10 API: how to build,
  test, run and publish it, its lock files, and its place on the server
  in current/site-api beside the legacy process of Progmaweb.
- Development explains ?site=talac and ?site=tazel on a development host
  and lists the new test file; the release and rollback steps label
  current/site-api for SELinux as well.
- The development server proxies /api to port 5086, the port the API
  uses unless PORT says otherwise.

1 files changed, 1 insertions, 1 deletions

diff --git a/frontend/vite.config.ts b/frontend/vite.config.ts
index b1fcbb7..8db39da 100644
--- a/frontend/vite.config.ts
+++ b/frontend/vite.config.ts
@@ -6,5 +6,5 @@ import vue from "@vitejs/plugin-vue";
 
 export default defineConfig({
   plugins: [vue()],
-  server: { proxy: { "/api": "http://127.0.0.1:5080" } },
+  server: { proxy: { "/api": "http://127.0.0.1:5086" } },
 });