fix: address PR review feedback (#1424)

- restore customFields on unarchive; reconcile all occupants on field-schema edits (store.ts)
- serialize per-field saves + controlled inputs in TaskFieldsSection (race fixes)
- fn_workflow_get includes layout; Array.isArray guards in validateCodeNodeSources
- per-instance graphStepActiveContext keying; rebase in instance worktree; clear run-once memo on RETHINK
- GET /api/step-parsers + registry-backed parser select (plugin parsers reachable from editor)
- translate new workflowNodes/workflowFields strings across all 5 non-en locales

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

packages/dashboard/app/api/legacy.ts

@@ -5058,6 +5058,16 @@ export function fetchTraits(projectId?: string): Promise<TraitCatalogEntry[]> {
   );
 }
 
+/** Fetch the step-parser id catalog (built-ins + registered plugin parsers) for
+ *  the parse-steps node inspector (KTD-12). Registry-backed, read-only,
+ *  session-scoped. Mirrors fetchTraits. */
+export function fetchStepParsers(projectId?: string): Promise<string[]> {
+  const path = withProjectId("/step-parsers", projectId);
+  return dedupe(path, () =>
+    api<{ parsers: Array<{ id: string }> }>(path).then((res) => res.parsers.map((p) => p.id)),
+  );
+}
+
 /** Fetch a single workflow definition. */
 export function fetchWorkflow(id: string, projectId?: string): Promise<import("@fusion/core").WorkflowDefinition> {
   return api<import("@fusion/core").WorkflowDefinition>(withProjectId(`/workflows/${encodeURIComponent(id)}`, projectId));