fix: type-safe nitro editor helpers and stabilize deploy build

Rewrite getNested/updateNested without fragile any/Json inference, clear stale .next types before build, and skip env refine during compile.

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

.gitea/workflows/deploy.yaml

@@ -66,6 +66,10 @@ jobs:
           pnpm test
 
           # 7. Next.js Build
+          # Skip env refine during compile/page-data; runtime still validates via env.ts.
+          # Drop stale generated types that can diverge from source after incremental builds.
+          rm -rf .next/types .next/dev
+          export SKIP_ENV_VALIDATION=1
           pnpm build
 
           # 8. Fix ownership: Build first, THEN set permissions for the web server