fix(httpapi): phase 1 compliance — ERR-01, SEC-04, CDN client, scheduler docs

Co-authored-by: Cursor <[email protected]>

internal/httpapi/server.go

@@ -24,6 +24,7 @@ type Server struct {
 	apiKeys     []apiKeyRecord
 	insecureDev bool
 	corsOrigins []string
+	cdnHTTP     *http.Client
 	mux         *http.ServeMux
 }
 
@@ -67,6 +68,7 @@ func New(opts Options) (*Server, error) {
 		apiKeys:     parseAPIKeysSpec(opts.APIKeys),
 		insecureDev: opts.InsecureDev && opts.SeedDemo,
 		corsOrigins: parseCORSOrigins(opts.CORSAllowedOrigins),
+		cdnHTTP:     NewCDNHTTPClient(),
 	}
 	s.mux = http.NewServeMux()
 	s.registerRoutes()