fix(ui): export SECTION_META from config-form module

Export the SECTION_META constant from config-form.render.ts and
re-export it through config-form.ts so it can be imported by config.ts.

This fixes a runtime error where SECTION_META was being referenced
but not properly exported from its source module.

ui/src/ui/views/config-form.render.ts

@@ -54,7 +54,7 @@ const sectionIcons = {
 };
 
 // Section metadata
-const SECTION_META: Record<string, { label: string; description: string }> = {
+export const SECTION_META: Record<string, { label: string; description: string }> = {
   env: { label: "Environment Variables", description: "Environment variables passed to the gateway process" },
   update: { label: "Updates", description: "Auto-update settings and release channel" },
   agents: { label: "Agents", description: "Agent configurations, models, and identities" },

ui/src/ui/views/config-form.ts

@@ -1,4 +1,4 @@
-export { renderConfigForm, type ConfigFormProps } from "./config-form.render";
+export { renderConfigForm, type ConfigFormProps, SECTION_META } from "./config-form.render";
 export {
   analyzeConfigSchema,
   type ConfigSchemaAnalysis,

ui/src/ui/views/config.ts

@@ -1,6 +1,6 @@
 import { html, nothing } from "lit";
 import type { ConfigUiHints } from "../types";
-import { analyzeConfigSchema, renderConfigForm } from "./config-form";
+import { analyzeConfigSchema, renderConfigForm, SECTION_META } from "./config-form";
 import {
   hintForPath,
   humanize,