Stage 17 #4: enrich the out-of-app your-turn push + add game-over

The Telegram 'your turn' notification now names the opponent and recaps their last
move (voiced as the opponent: «{name}: my move — «WORD». Score 120:95» for a scoring
play; a short 'swapped / passed, your turn' otherwise), and a new game-over
notification reports the result + final score when a game ends by any path (closing
play, all-pass, resign, timeout). Scores are recipient-first (the reader's score
leads), 2-4 players (120:95:80).

- schema: YourTurnEvent gains opponent_name/last_action/last_word/score_line
  (appended, backward-compatible); new GameOverEvent{result, score_line}. Go + UI
  bindings regenerated (flatc 23.5.26 + pnpm codegen).
- backend: notify.YourTurn enriched + notify.GameOver; emitMove resolves the mover's
  name and emits per-recipient (your_turn to the next mover, game_over to every seat),
  with recipient-first score lines built in one place.
- gateway: game_over joins the out-of-app whitelist (routing.go).
- connector: render builds the enriched your_turn + game_over text per language (en/ru).
- tests: notify round-trip (enriched + game_over), emit (enriched fields + game_over to
  all seats / per-seat result), connector render (en/ru), routing; integration replay
  (play → your_turn with real name; resign → game_over) green.
- docs: ARCHITECTURE push catalog + out-of-app set, FUNCTIONAL (+ _ru), PLAN tracker.

PLAN.md

@@ -1425,8 +1425,18 @@ provided cert) at the contour caddy; prod VPN; rollback.
       `GameActionRequest` → an `Ack`); the lobby drops the card optimistically and keeps the cache
       in sync. Covered by an integration test (active→`ErrGameActive`, outsider→`ErrNotAPlayer`,
       per-account visibility, idempotent), a gateway transcode test, and a mock e2e (kebab → ❌).
-    - **Deferred to the next PR (agreed):** #4 enrich the out-of-app "your turn" / game-end push
-      with the opponent's name, last word and score.
+    - **Enriched out-of-app push (#4, shipped):** the "your turn" Telegram notification now names
+      the opponent and recaps their last move — voiced as the opponent, `«{name}: my move —
+      «WORD». Score 120:95»` for a scoring play, or a short "swapped / passed, your turn" — and a
+      new **game-over** notification reports the result + final score when a game ends (any path:
+      closing play, all-pass, resign, timeout). Scores are **recipient-first** (the reader's
+      score leads), 2- to 4-player (`120:95:80`). `YourTurnEvent` gained `opponent_name`/
+      `last_action`/`last_word`/`score_line` (appended, backward-compatible) and a new
+      `GameOverEvent` carries `result`/`score_line`; both emit per-recipient from the game commit
+      (`emitMove`), join the out-of-app whitelist, and render per language (en/ru) in the Telegram
+      connector. The backend resolves the mover's display name (the score line and result are
+      built per recipient). Covered by notify round-trip, emit, connector-render (en/ru) and
+      routing tests.
 
 ## Deferred TODOs (cross-stage)