fix: field normalization, AI connection validation, autofix filter (#581) (#638)

- Normalize name→nodeName and id→nodeId for node-targeting operations in
  the Zod schema transform, so LLMs using natural field names no longer
  get "Node not found" errors
- Replace hardcoded ALL_CONNECTION_TYPES with dynamic iteration so AI
  sub-nodes (ai_outputParser, ai_document, ai_textSplitter, etc.) are
  not flagged as disconnected during save
- Add .catchall() to workflowConnectionSchema and extend connection
  reference validation to cover all connection types, not just main
- Fix filterOperationsByFixes ID-vs-name mismatch: typeversion-upgrade
  operations now include nodeName alongside nodeId, and the filter checks
  both fields

Conceived by Romuald Członkowski - https://www.aiadvisors.pl/en

Co-authored-by: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

dist/services/n8n-api-client.d.ts

@@ -36,6 +36,7 @@ export declare class N8nApiClient {
     createTag(tag: Partial<Tag>): Promise<Tag>;
     updateTag(id: string, tag: Partial<Tag>): Promise<Tag>;
     deleteTag(id: string): Promise<void>;
+    updateWorkflowTags(workflowId: string, tagIds: string[]): Promise<Tag[]>;
     getSourceControlStatus(): Promise<SourceControlStatus>;
     pullSourceControl(force?: boolean): Promise<SourceControlPullResult>;
     pushSourceControl(message: string, fileNames?: string[]): Promise<SourceControlPushResult>;