feat(points): show points result on every status save

Core now settles on GET /api/rewards/games/{appid}. The Frontend
shows a toast, refreshes the header balance, and lists the paid
rows and reasons on the game page. Deploy Core first.

public/i18n/en.json

@@ -1181,11 +1181,41 @@
     "RULES": {
       "STARTED": "5 points when you start a game from your pile and play it (Steam games, once per game).",
       "FINISHED": "30, 50 or 80 points when you finish a game (by its time to beat), if you really played it. Once per game.",
-      "COMPLETED": "+40 points when you reach 100 % achievements in a completed game.",
-      "FINISHED_MANUAL": "15 points for a manual game you finish, at most 3 per week.",
+      "COMPLETED": "+40 points when you reach 100 % achievements in a completed game. It needs a proven Steam finish; a manual finish never opens it.",
+      "FINISHED_MANUAL": "15 points for a manual game you finish, at most 3 per week (Monday to Sunday). A 4th finish in that week pays nothing.",
       "MONTH": "40 points when your pile is smaller at the end of a month than at its start and you finished a game that month.",
       "STREAK": "20 points for every week with a finished game after a week with a finished game.",
-      "UNLOCK": "Items with a lock cannot be bought. They unlock once, for good, when you reach their goal."
+      "UNLOCK": "Items with a lock cannot be bought. They unlock once, for good, when you reach their goal.",
+      "PROOF": "A Steam finish needs proof of fresh play: the ending achievement (not older than 30 days before the finish), any play from 30 days before the finish on, or half of the normal time played after it.",
+      "ONCE": "Each kind pays once per game. Editions of one game count as one.",
+      "PLAYSTATION": "PlayStation play pays nothing and is no proof. A game linked to a PlayStation title pays nothing for now.",
+      "HIDDEN": "Hidden games pay nothing.",
+      "CHECKED": "Points are checked when you change a status, open a game or the app, and every night.",
+      "STARTER": "Finishes from before the status history got starter points once (20 per game, 250 at most)."
+    },
+    "GAME": {
+      "PAID": "{{kind}}: {{points}} points, paid on {{date}}",
+      "OTHER_EDITION": "(other edition of the game)",
+      "WAITING": "Finished: waiting for proof. Play the game once after finishing.",
+      "WAITING_START": "Started: play the game once to get the 5 points.",
+      "NONE": "{{kind}}: no points - {{reason}}",
+      "TOAST_BOOKED": "+{{count}} points",
+      "TOAST_PAID": "Already paid on {{date}}",
+      "TOAST_NONE": "No points yet: {{reason}}",
+      "TOAST_STATUS": "This status earns no points"
+    },
+    "REASONS": {
+      "HIDDEN": "the game is hidden",
+      "PLAYSTATION": "PlayStation games pay nothing",
+      "PLAYSTATION_LINKED": "the game is linked to a PlayStation title (pays nothing for now)",
+      "BEFORE_HISTORY": "finished before the status history began (see starter points)",
+      "MANUAL_GAME": "a manual game has no play time to prove it",
+      "NO_PLAY_AFTER_START": "no play since the start",
+      "NO_PLAYTIME": "no play time on record",
+      "NO_PROOF": "no proof of fresh play, play once after finishing",
+      "WEEKLY_LIMIT": "weekly limit reached",
+      "NEEDS_PROVEN_FINISH": "needs a proven finish first",
+      "NOT_ALL_ACHIEVEMENTS": "not all achievements unlocked"
     },
     "SLOTS": {
       "AVATAR_BORDER": "Avatar border",