feat: implement AI-assisted rename prompting feature

- Added data model for AI-assisted renaming including structures for prompts, responses, and policies.
- Created implementation plan detailing the integration of Google Genkit into the CLI for renaming tasks.
- Developed quickstart guide for setting up and using the new AI rename functionality.
- Documented research decisions regarding Genkit orchestration and prompt composition.
- Established tasks for phased implementation, including setup, foundational work, and user stories.
- Implemented contract tests to ensure AI rename policies and ledger metadata are correctly applied.
- Developed integration tests for validating AI rename flows, including preview, apply, and undo functionalities.
- Added tooling to pin Genkit dependency for consistent builds.

cmd/undo.go

@@ -56,6 +56,9 @@ func newUndoCommand() *cobra.Command {
 						fmt.Fprintf(out, "Template restored to %q\n", template)
 					}
 				}
+				if aiMeta, ok := entry.AIMetadata(); ok {
+					fmt.Fprintf(out, "AI batch restored (model=%s, promptHash=%s, files=%d)\n", aiMeta.Model, aiMeta.PromptHash, aiMeta.BatchSize)
+				}
 			}
 
 			return nil