feat(forks): CLI --fork-triggers flag, fork-trigger docs, skill update

- Adds --fork-triggers boolean to wmill workspace fork; passes
  fork_triggers through to the create_fork API call.
- New docs/fork-triggers.md describing the model end-to-end (default,
  opt-in clone, merge-direction filter, conflict warning, future
  runtime-suffix work).
- Updates the adding-a-trigger SKILL.md to mention the fork-export
  ignore-keys participation and the clone_triggers_and_schedules
  block that new trigger kinds must extend.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

cli/src/commands/workspace/fork.ts

@@ -14,6 +14,7 @@ async function createWorkspaceFork(
     createWorkspaceName: string | undefined;
     color: string | undefined;
     datatableBehavior: string | undefined;
+    forkTriggers: boolean | undefined;
     yes: boolean | undefined;
   },
   workspaceName: string | undefined,
@@ -231,6 +232,7 @@ async function createWorkspaceFork(
         name: opts.createWorkspaceName ?? trueWorkspaceId,
         color: forkColor,
         forked_datatables: forkedDatatables,
+        fork_triggers: opts.forkTriggers ?? false,
       },
     });
 

cli/src/commands/workspace/workspace.ts

@@ -772,6 +772,10 @@ const command = new Command()
     "--datatable-behavior <behavior:string>",
     "How to handle datatables: skip, schema_only, or schema_and_data (default: interactive prompt)"
   )
+  .option(
+    "--fork-triggers",
+    "Clone every trigger and schedule from the parent into the fork (always disabled). Defaults to off."
+  )
   .option("-y --yes", "Skip interactive prompts (defaults datatable behavior to 'skip')")
   .action(createWorkspaceFork as any)
   .command("delete-fork")