feat: add Stella Sora, from the wiki's front page rather than its banner list

This wiki publishes the same schedule twice and the fuller surface is the worse
one. /wiki/Banner_List has 55 clean rows with full wall clocks and states no
timezone anywhere on the page; the front page's Current Banners module emits
the same instants as real <time datetime="...-07:00"> elements. The two agree
exactly, which is strong evidence the list is UTC and is still only evidence —
so we read the surface that says what it means and pay four live banners
instead of a full history for it. If an editor ever states the zone on
Banner_List, that page becomes the better source immediately.

Two ways this could have failed silently. The template writes its BEM
underscores as &#95;&#95;, so a selector written against the class name a
browser shows matches nothing at all; and banner names are red links to
?action=edit&redlink=1, which Miraheze's robots.txt disallows, so a href
carrying a query is refused and the page URL stands in.

No resetOffsets, and here the source did state an offset: -07:00, which is US
Pacific and therefore shifts twice a year. That is the Fate/Grand Order gap
arriving through a page that looks like it answered the question.

Co-Authored-By: Claude Opus 5 (1M context) <[email protected]>

src/ingest/adapters/index.ts

@@ -133,6 +133,16 @@ const SOURCES: SourceSpec[] = [
     url: "https://iopwiki.com/wiki/GFL2_Events",
     parserId: "iopwiki",
   },
+  {
+    id: "stellasora-stellasorawiki-events",
+    game: "stellasora",
+    // The front page, and deliberately not `/wiki/Banner_List`: the list has
+    // full coverage and states no timezone anywhere, while this module emits
+    // the same instants as `<time datetime>` with the offset in the markup.
+    // See `parsers/stellasora.ts` for why coverage loses that argument.
+    url: "https://stellasora.miraheze.org/wiki/Main_Page",
+    parserId: "stellasorawiki",
+  },
 ];
 
 function toAdapter(spec: SourceSpec): Adapter {