Add real server pool, race roster overhaul, and ship energy system

Server browsing & matchmaking:
- HL2-style main menu (QUICK PLAY/SERVER SELECT/OPTIONS/PROFILE/QUIT)
  replaces the old CASUAL/RANKED tiles; RANKED removed end-to-end
  (menu, matchmaking-api's Mode.ranked queue path, MMR matching) until
  ranked is real.
- New menu/server_select.gd lists real servers from the matchmaking
  API's GET /servers and connects directly, retiring the old
  unreachable menu/server_browser.gd.
- Real game-server pool: NetworkManager.host_server() self-registers on
  boot and heartbeats every 8s with live player counts; API computes
  available/full status from player_count, and a background sweep marks
  any server offline once its heartbeat goes stale (catches a crashed
  server that never deregistered).
- Server-select rows get a live UDP ping probe (query port = game port
  + 10000) instead of trusting stale DB numbers; post-connect HUD shows
  live RTT off ENet's own peer stats.

Race roster overhaul:
- Swapped Terran/Mechanos/Vorg for the pivoted roster — Apex Dynamics,
  Inner Sphere Navy, Outer Rim Collective — each with a 3-ship
  Fighter/Gunner/Tank lineup, art cropped from concept sheets with
  background removal + orientation fixes per sheet.
- Live headcount + roster + "TEAM FULL" lock on the race-select screen,
  shared between the initial pre-spawn pick and the pause menu's live
  SELECT TEAM swap.
- Bot personalities (bots/bot_personality.gd): aggression/caution/
  accuracy/reaction/awareness traits rolled per bot instead of one
  fixed AI profile.

HUD additions:
- Player list (roster, teammates white/enemies yellow, bots flagged),
  kill feed, minimap, and explosion VFX on death.
- Health and energy now render as bars (hud/stat_bar.gd) instead of
  text in the top-left HUD.

Ship energy system:
- Per-role max energy (Fighter 100 / Gunner 150 / Tank 250), 75 energy
  per shot, flat regen (100 per 2.5s), fully server-authoritative and
  piggybacked on the existing per-tick state broadcast alongside health.
- New blue "mirrored" bar top-middle of the screen (hud/energy_bar.gd)
  whose fill drains from both edges toward the center instead of
  left-to-right.

Ship handling tuning:
- Turn rate reduced (4.0 -> 1.0 rad/s) so a quick tap no longer
  over-rotates; holding past 0.15s ramps to double speed (2.0 rad/s) for
  fast full turns, gated the same way damage already is so replay during
  reconciliation can't double-count the hold timer.

Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>

matchmaking-api/app/routers/servers.py

@@ -1,9 +1,10 @@
-from datetime import datetime
+from datetime import datetime, timedelta
 
 from fastapi import APIRouter, Depends
 from sqlalchemy import select
 from sqlalchemy.ext.asyncio import AsyncSession
 
+from app.config import settings
 from app.database import get_db
 from app.models import GameServer, ServerStatus
 from app.schemas import ServerRegisterRequest
@@ -11,24 +12,62 @@ from app.schemas import ServerRegisterRequest
 router = APIRouter(prefix="/servers", tags=["servers"])
 
 
-# Real game servers should call this on boot and periodically (heartbeat) once
-# NetworkManager grows that integration. Until then, a dev server is seeded
-# on API startup (see main.py) from DEV_SEED_SERVER_IP/PORT so matchmaking is
-# testable end-to-end without it.
+def _status_for(player_count: int, max_players: int) -> ServerStatus:
+    return ServerStatus.full if player_count >= max_players else ServerStatus.available
+
+
+# spacewar/autoload/network_manager.gd calls this once on server boot and
+# then repeatedly as a heartbeat (every HEARTBEAT_INTERVAL, currently 8s),
+# via MatchmakingClient.register_server(). Same endpoint for both — an
+# unrecognized (ip, port, mode) creates a new row, a recognized one just
+# refreshes it. sweep_stale_servers() (below) is what flips a server back to
+# offline if those heartbeats stop, e.g. the process crashed or was killed
+# without a clean shutdown.
 @router.post("/register")
 async def register_server(req: ServerRegisterRequest, db: AsyncSession = Depends(get_db)) -> dict:
     existing = (
         await db.execute(select(GameServer).where(GameServer.ip == req.ip, GameServer.port == req.port, GameServer.mode == req.mode))
     ).scalars().first()
+    status = _status_for(req.player_count, req.max_players)
     if existing:
-        existing.status = ServerStatus.available
+        existing.status = status
+        existing.player_count = req.player_count
+        existing.max_players = req.max_players
         existing.last_heartbeat = datetime.utcnow()
     else:
-        db.add(GameServer(ip=req.ip, port=req.port, mode=req.mode, status=ServerStatus.available))
+        db.add(
+            GameServer(
+                ip=req.ip,
+                port=req.port,
+                mode=req.mode,
+                status=status,
+                player_count=req.player_count,
+                max_players=req.max_players,
+            )
+        )
     await db.commit()
     return {"status": "registered"}
 
 
+# Run periodically from main.py's lifespan (same shape as
+# queue_manager.run_matching_loop()). Without this, a server that's killed
+# instead of cleanly shut down (crash, host reboot, `kill -9`) would stay
+# listed as available/full forever — server_select.gd's own UDP ping probe
+# catches that live per-row, but this keeps the DB's status column honest
+# too, e.g. for any future consumer that just reads GET /servers.
+async def sweep_stale_servers(db: AsyncSession) -> None:
+    cutoff = datetime.utcnow() - timedelta(seconds=settings.server_stale_seconds)
+    stale = (
+        await db.execute(
+            select(GameServer).where(GameServer.last_heartbeat < cutoff, GameServer.status != ServerStatus.offline)
+        )
+    ).scalars().all()
+    for server in stale:
+        server.status = ServerStatus.offline
+    if stale:
+        await db.commit()
+
+
 @router.get("")
 async def list_servers(db: AsyncSession = Depends(get_db)) -> list[dict]:
     servers = (await db.execute(select(GameServer))).scalars().all()
@@ -38,6 +77,8 @@ async def list_servers(db: AsyncSession = Depends(get_db)) -> list[dict]:
             "port": s.port,
             "mode": s.mode,
             "status": s.status,
+            "player_count": s.player_count,
+            "max_players": s.max_players,
             "last_heartbeat": s.last_heartbeat,
         }
         for s in servers