ai generated solutions to our ai generated problems

backend/README.md

@@ -4,18 +4,36 @@ Rust backend API service for Toothless' TSS Bot.
 
 It reads two SQLite databases:
 
-- `TSS_BATTLES_DB` for `tss_battles.db`
+- `TSS_BATTLES_DB` for `tss_battles.db` (matches, players, and the `match_logs` table)
 - `TSS_TEAMS_DB` for `tss_teams.db`
 - `BACKEND_HOST` bind host, default `127.0.0.1`
 - `BACKEND_ALLOWED_ORIGINS` comma-separated browser origins allowed by CORS
 
 Both paths can be absolute or relative to the repo root when run through the root scripts/PM2.
 
+## Vehicle translation + icons
+
+At startup the backend loads two cache files (built by the bots, shared under
+`STORAGE/CACHE`) into memory to translate `player_games_hist.vehicle_internal`
+(the WT cdk) into localized vehicle names and icon filenames for the game scoreboard:
+
+- `VEHICLE_TRANSLATIONS_JSON` → `vehicle_translations.json` (`{ cdk: { en, ru, ... } }`).
+  The `/api/tss/games/:id` endpoint honors `?lang=` (default `en`), falling back
+  `lang → en → raw cdk`.
+- `VEHICLE_DATA_CACHE_JSON` → `vehicle_data_cache_all.json` (`[cdk, name, icon, tags]`),
+  used for icon filenames (fallback `<cdk>.png`).
+
+The icon PNGs themselves are served statically by the frontend at `/vehicle-icons`
+(deploy-time copy/symlink of `SHARED/ICONS/VEHICLES`).
+
 It currently exposes:
 
 - `GET /health`
 - `GET /api/tss/leaderboard/teams?limit=100`
 - `GET /api/tss/leaderboard/players?limit=100`
+- `GET /api/tss/games/recent?limit=50`
+- `GET /api/tss/games/:session_id?lang=en` — scoreboard (teams, players, vehicle lineup)
+- `GET /api/tss/games/:session_id/logs` — chat + battle logs from `match_logs`
 - `GET /api/tss/teams/resolve?name=...`
 - `GET /api/tss/teams/search?q=...&limit=10`
 - `GET /api/tss/teams/:team`