feat(events): an event action's progress() on a live run's public page (MODULE_API 1.12.0)

An event action may declare an optional `progress(envelope)`: how its
step stands while the run is live. Core accepts two shapes and
interprets neither:

- a count: { label, left, of }, rendered "Bandits: 3 of 8 left";
- a percentage: { label, percent }, rendered "The Juggernaut: 62%".

How core asks:

- `events/progress.js` asks each step of a live run whose action has
  one. It passes the step's own held ledger rows and the reader's
  account id, so the module applies its own visibility.
- Each call has a 2 s deadline. A throw, a late answer or any other
  shape is a line not shown, never an error on the page.
- One answer per run and reader is cached for 5 s.
- The public event's live occurrence carries the lines as `progress`.
  The route takes an optional session for the reader.
- The page renders them under the phase label and re-reads them every
  15 s while the event is live.

Core stays game-agnostic: no game's words are in it. Additive, so a
minor bump. Module-uo declares ^1.10.0, registers no action with
progress(), and its actions and pages are unchanged.

From RunicNPC stage 8 (D304, D305).

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

server/swagger/swagger.js

@@ -1318,6 +1318,23 @@ const doc = {
               'The LABEL of the phase a live run is in, resolved from the version the run pinned. Null unless it is live. The plan behind the event — phases, steps, actions and their params — is never published.',
           },
           resultsPublishedAt: { type: 'string', format: 'date-time', nullable: true },
+          progress: {
+            type: 'array',
+            description:
+              'On the live occurrence only: how its steps stand, in step order, in the words their modules chose (MODULE_API 1.12.0). Each line is a `label` with either `left` of `of` ("Bandits: 3 of 8 left") or a `percent` ("The Juggernaut: 62%"). Core renders them as text and interprets nothing. Empty when no step has anything to say, or its module did not answer in time.',
+            items: { $ref: '#/components/schemas/PublicEventProgressLine' },
+          },
+        },
+      },
+      PublicEventProgressLine: {
+        type: 'object',
+        description:
+          'One line of a live run’s progress: a `label` with either `left` of `of`, or a `percent`. Never both.',
+        properties: {
+          label: { type: 'string', example: 'Bandits' },
+          left: { type: 'integer', example: 3 },
+          of: { type: 'integer', example: 8 },
+          percent: { type: 'integer', minimum: 0, maximum: 100, example: 62 },
         },
       },
       PublicEventParticipant: {