Ensure game is loaded before processing commands

Add ensureGameLoaded() calls to postCommand, postShardokCommand, and
postPlacementCommands. This handles the case where a command arrives
before the game subscription has loaded the game into memory.

This is cheap (just a map contains check) if the game is already loaded,
but prevents "key not found" errors when commands arrive before or
without a subscription.

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

src/main/scala/net/eagle0/eagle/service/GamesManager.scala

@@ -778,6 +778,12 @@ class GamesManager(
       token: Long
   ): Unit =
     this.synchronized {
+      // Lazy load: ensure game is in memory before processing command
+      // This handles the case where a command arrives before subscription after reconnect
+      EagleRequire.clientRequire(
+        ensureGameLoaded(gameId),
+        s"No game found with ID ${gameId.toHexString}"
+      )
       val _  = synchronizedHandlePostResults(
         gameControllerInfos(gameId).controller
           .postHumanCommand(
@@ -802,6 +808,11 @@ class GamesManager(
       index: Int,
       roll: Option[Int]
   ): Unit = this.synchronized {
+    // Lazy load: ensure game is in memory before processing command
+    EagleRequire.clientRequire(
+      ensureGameLoaded(eagleGameId),
+      s"No game found with ID ${eagleGameId.toHexString}"
+    )
     // FIXME: need to verify username match
     SimpleTimedLogger
       .fileLogger(eagleGameId, "timings")
@@ -831,6 +842,11 @@ class GamesManager(
       placementCommands: Vector[ShardokPlacementCommand],
       shardokToken: Long
   ): Unit = this.synchronized {
+    // Lazy load: ensure game is in memory before processing command
+    EagleRequire.clientRequire(
+      ensureGameLoaded(eagleGameId),
+      s"No game found with ID ${eagleGameId.toHexString}"
+    )
     // FIXME: need to verify username match
     shardokClient.postPlacementCommands(
       eagleGameId = eagleGameId,