feat(ui): make stat numbers clickable to open games

StatDrill context holds one dialog for a page. StatCount wraps a number:
total and status counts link to the library filter, other numbers open
StatGamesDialog. DrillRow and DrillButton support drill-down in tag bars
(genres, platforms, moods) and other stat displays. Dialog shows 40 games
per page with bottom-sheet layout on phones, handles pagination and errors
(403 not shared, 401 expired, 400 bad argument).

README.md

@@ -31,6 +31,10 @@ To Be Played is split into three repositories:
 - **Your stats** (`/stats`): totals and statuses; the pile in hours, in weeks at your pace of the last 90 days and in
   years of full-time work, and its oldest unplayed game; most played and most loyal games; top genres and moods;
   trips to the moon, the longest gaming day, games started but under one hour; finished games per year; games per platform.
+- **Click a number** (stats page, dashboard, public profile, landing page, Pile Points): a number, bar, row or year
+  opens the games behind it in a dialog (a bottom sheet on phones), 40 per page with "Load more". In your own
+  views the status counts and the pile link to the library with the filter instead. Not clickable: sums (playtime),
+  averages, rates and the moon trips. The list always uses the same rules as the number.
 - **Pile Points** (`/points`): points for playing games off your pile (start, finish by time to beat, 100 %, month and
   streak bonuses; Core checks proof of play), spent in a small shop on an avatar border, a badge, a premium accent, a
   banner frame, an effect for 100 % games and an animated page or banner background (CSS and SVG in `effects.css`, two canvas engines in `EffectCanvas`; layers follow the mouse and the phone tilt, on iPhone after the switch in the settings),
@@ -208,6 +212,19 @@ flowchart LR
   with `src/test/fetchRoutes.js`, which fails a test on any request without a route.
 - `src/utils/brokenImages.js` reports pictures that fail to load (`GameCover`, achievement icons on the game
   detail page) to Core.
+- The games behind a number: pages wrap their content in `StatDrillProvider` (`source` own, profile, community or
+  points), which renders one `StatGamesDialog`. Numbers call `useStatDrill()` / `StatCount`; outside a provider they
+  are plain text. `src/utils/statGames.js` builds the four endpoint URLs.
+
+```mermaid
+flowchart LR
+    Number["Number, bar or row"] --> Provider["StatDrillProvider"]
+    Provider --> Dialog["StatGamesDialog"]
+    Dialog -->|own| Own["Core /api/library/stats/games"]
+    Dialog -->|"profile + ticket"| Profile["Core /api/public/profiles/library/stats/games"]
+    Dialog -->|community| Community["Core /api/stats/public/games"]
+    Dialog -->|points| Points["Core /api/rewards/.../games"]
+```
 - `useLibrarySync` polls Core's `/api/library/sync-status` while a Steam sync runs, then loads the data again.
 - The bookmarklet hands its list over in the URL fragment (base64url JSON), which the browser sends to no server.
   The import page reads it once and removes it from the URL. `RequireSession` keeps the fragment on the way