feat(events): the step editor reworked, and event templates (MODULE_API 1.13.0)

Rust PLAN_REDESIGNS §2 (U-3-U-6, F11; D192, D334), core half. Game-agnostic:
Module-uo's steps get the new controls and nothing else.

Contract (MODULE_API 1.12.0 -> 1.13.0, four optional additions):
- api.registerEventTemplates([{ id, label, description, inputs, build }]):
  inputs are params (<= 8); core checks them, calls build() (10 s), validates
  the result as a spec and answers an unsaved draft.
  POST /admin/events/catalog/templates/:templateId (admin, editor).
- a param's duration: 'minutes' (int/float only); core.lease's minutes has it.
- a lease's example for its value.
- an option row's note (<= 300 chars), shown under the chosen field.

Editor:
- no type tags or bare asterisks; a required field says so in words once a
  save has been tried with it empty (and the save stops before the round trip).
- boolean: toggle when required, [Not set] [Yes] [No] when optional (D334).
- a choice of two or three is a row of buttons (lease values, small sources).
- core.lease drawn as the chosen lease: picked by label; value by the lease's
  type, range, values and example; target picker over target.source (F11);
  minutes with the lease's longest hold.
- a timed step keeps its run open: a phase with no advance rule gets
  after: <longest hold> when a timed step is added; a sentence under any phase
  whose run can end sooner (U-6).
- Start asks "Publish and start" or "Start version N" when the working copy is
  ahead of the published version (draftAhead on GET/PUT/publish; U-5).
- New event can start from a module's template.
- core's own examples name no game (§0.9).

Swagger, routes.manifest/guards and engagement-triggers.json regenerated.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01E14m6SuuY6i1vASFeGDBeY

server/src/config/coreEventActions.js

@@ -137,14 +137,14 @@ const ACTIONS = [
         name: 'title',
         type: 'string',
         required: false,
-        example: 'The gates of Britain open at dusk',
+        example: 'The gates open at dusk',
         description: 'Optional heading, for legs that render one.',
       },
       {
         name: 'body',
         type: 'string',
         required: true,
-        example: 'A caravan has been sighted on the road east of Cove.',
+        example: 'A caravan has been sighted on the east road.',
         description: 'The announcement itself. Plain text.',
       },
     ],
@@ -250,7 +250,7 @@ const ACTIONS = [
         name: 'instruction',
         type: 'string',
         required: true,
-        example: 'Open the north gate and read the herald script in Britain bank.',
+        example: 'Open the north gate and read the herald script in the town square.',
         description: 'What the staff member is being asked to do.',
       },
       {
@@ -306,7 +306,10 @@ const ACTIONS = [
         name: 'lease',
         type: 'string',
         required: true,
-        example: 'uo.rate.skillgain',
+        // Game-neutral (Rust PLAN_REDESIGNS §0.9): this was a UO rate, shown to
+        // every deployment's authors. The editor now draws the chosen lease's own
+        // form and examples (MODULE_API 1.13.0), so this is only ever a fallback.
+        example: 'mygame.rate.gather',
         source: 'core.options.leases',
         description: 'Which declared value to borrow.',
       },
@@ -347,6 +350,10 @@ const ACTIONS = [
         type: 'int',
         required: true,
         example: 120,
+        // A timed step (MODULE_API 1.13.0): the editor keeps the phase open at
+        // least this long, because teardown gives the value back when the run
+        // ends, whatever this says.
+        duration: 'minutes',
         description: 'How long to hold it. Core refuses more than the lease allows.',
       },
     ],