Initial vibeproxy implementation

Self-contained HTTP/HTTPS/TCP/UDP reverse proxy manager written in Go,
with SQLite storage, a Bootstrap 5 admin UI (Go templates, no JS
framework), and a REST API under /api/v1.

Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01QTXFrNP1imCW7jtfL5SZrw

internal/web/templates_smoke_test.go

@@ -0,0 +1,22 @@
+package web
+
+import "testing"
+
+// TestTemplatesParse ensures every embedded template parses successfully
+// (render.go's init() panics on parse failure, so a passing test here just
+// confirms the package loaded).
+func TestTemplatesParse(t *testing.T) {
+	if templates == nil {
+		t.Fatal("templates not initialized")
+	}
+	names := []string{
+		"dashboard", "proxy_hosts", "proxy_host_form", "streams", "stream_form",
+		"backends", "certificates", "access_lists", "access_list_form",
+		"logs", "logs_audit", "settings", "api_tokens",
+	}
+	for _, n := range names {
+		if templates.Lookup(n) == nil {
+			t.Errorf("template %q not found", n)
+		}
+	}
+}