docs(kanban): fix worker skill setup instructions too (#20960)

Follow-up to #20958. The worker skill section had the same stale
'hermes skills install devops/kanban-worker' command — kanban-worker
is also bundled, so that command fails with 'Could not fetch from any
source.'

Replace with bundled-skill verification + restore pattern, matching
the orchestrator section. Uses <your-worker-profile> placeholder since
assignees vary (researcher, writer, ops, linguist, reviewer, etc.)
rather than a single fixed 'worker' profile.

website/docs/user-guide/features/kanban.md

@@ -335,10 +335,19 @@ Any profile that should be able to work kanban tasks must load the `kanban-worke
 3. Call `kanban_heartbeat(note="...")` every few minutes during long operations.
 4. Complete with `kanban_complete(summary="...", metadata={...})`, or `kanban_block(reason="...")` if stuck.
 
-Load it with (this one is **you**, installing into a profile — not a tool call):
+`kanban-worker` is a bundled skill, synced into every profile during install and
+update — there is no separate Skills Hub install step. Verify it is present in
+whichever profile you use for kanban workers (`researcher`, `writer`, `ops`,
+etc.):
 
 ```bash
-hermes skills install devops/kanban-worker
+hermes -p <your-worker-profile> skills list | grep kanban-worker
+```
+
+If the bundled copy is missing, restore it for that profile:
+
+```bash
+hermes -p <your-worker-profile> skills reset kanban-worker --restore
 ```
 
 The dispatcher also auto-passes `--skills kanban-worker` when spawning every worker, so the worker always has the pattern library available even if a profile's default skills config doesn't include it.