feat(sync): add Set to 100% button for all-unlocked games

The sync details show a Set to 100% button for ALL_UNLOCKED games.
The button uses the existing status PUT, checks points, and reloads
the Dashboard. Refs #21

README.md

@@ -117,6 +117,7 @@ flowchart LR
   (`GameAchievements`, grouped by `achievementSets`). A trophy has its type (bronze to platinum), rarity and a DLC tag;
   a hidden trophy shows "Hidden trophy" until it is earned; a set whose list is not stored yet says it loads with the
   next sync. The sync banner and inbox text say "achievements or trophies". Library tiles show the best set of a game.
+  The sync details list games whose last achievement this sync unlocked, with a button to set them to 100 %.
 - **Game detail**: status, priority, 1–5 star rating, notes, achievements, time to beat (story / extras / 100 %),
   a link to the game's speedrun.com page when it has verified runs, a hint when Steam shows recent playtime for a
   game still in the backlog, and one to set the status to 100 % when