Fix V build: bootstrap toolchain, vanilla_epoll src/ layout & module path

v/config.yaml

@@ -1,10 +1,10 @@
 language:
-  version: weekly.2026.08
+  version: 0.5.1
   files:
     - "**/*.v"
     - server
   bootstrap:
-    - cd /opt/vlang && git fetch --all --tags && git checkout weekly.2026.08 && make && v -version && cd /app
+    - cd /opt/vlang && v -version && cd /app
   build_flags:
 
   engines:

v/pico/main.v

@@ -27,7 +27,7 @@ fn callback(data voidptr, req picohttpparser.Request, mut res picohttpparser.Res
 	}
 	if req.method == 'POST' {
 		if req.path == '/user' {
-			res.write_string('HTTP/1.1 200 OK\r\n')
+			res.write_string('HTTP/1.1 201 Created\r\n')
 			res.header('Connection', 'keep-alive')
 			res.header('Content-Type', 'text/plain')
 			res.header('Content-Length', '0')

v/vanilla_epoll/config.yaml

@@ -1,8 +1,11 @@
 framework:
   github: vlang/v
 
+  # Install as the `vanilla` module (import vanilla.http_server). `v install <url>`
+  # now namespaces by owner (~/.vmodules/enghitalo/vanilla), so clone to the
+  # expected path instead.
   download:
-    - v install https://github.com/enghitalo/vanilla
+    - mkdir -p $HOME/.vmodules && git clone --depth 1 https://github.com/enghitalo/vanilla $HOME/.vmodules/vanilla
 
   build_deps:
     - liburing-dev linux-libc-dev liburing2

v/veb/main.v

@@ -27,6 +27,7 @@ fn (mut app App) get_user_id(mut ctx Context, id string) veb.Result {
 
 @['/user'; post]
 fn (mut app App) post_user(mut ctx Context) veb.Result {
+	ctx.res.set_status(.created)
 	ctx.set_header(.connection, 'keep-alive')
 	ctx.set_header(.content_length, '0')
 	return ctx.text('')