fix: Drizzle transaction execution, canvas re-init, crowd removal

- Add .run() to all Drizzle queries inside sqlite.transaction() in
  orchestrator.ts and mock.ts — queries were building but never executing,
  leaving fights stuck as 'live' forever
- Remove spectator crowd from drawArenaDecor()
- Rename duplicate spawnProp to spawnWeaponProp (was crashing module load)
- Replace canvas element on re-init to avoid "KAPLAY already initialized"
- Add safeText() to strip brackets from k.text() calls (Kaplay treats
  [ ] as style markup, crashes on unclosed tags)

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

server/src/engine/orchestrator.ts

@@ -360,7 +360,7 @@ async function executeFightRounds(fightId: string, botA: BotRecord, botB: BotRec
       botAHp: hpA,
       botBHp: hpB,
       totalRounds: round,
-    }).where(eq(schema.fights.id, fightId))
+    }).where(eq(schema.fights.id, fightId)).run()
 
     // Check for KO
     if (hpA <= KO_THRESHOLD || hpB <= KO_THRESHOLD) {
@@ -390,7 +390,7 @@ async function executeFightRounds(fightId: string, botA: BotRecord, botB: BotRec
       status: 'finished',
       winnerId,
       endedAt: new Date().toISOString(),
-    }).where(eq(schema.fights.id, fightId))
+    }).where(eq(schema.fights.id, fightId)).run()
 
     // Update bot stats
     if (winnerId) {
@@ -409,7 +409,7 @@ async function executeFightRounds(fightId: string, botA: BotRecord, botB: BotRec
         bestStreak: newBestStreak,
         tier: calculateTier(newWinnerElo, winner.wins + 1),
         lastFightAt: new Date().toISOString(),
-      }).where(eq(schema.bots.id, winnerId))
+      }).where(eq(schema.bots.id, winnerId)).run()
 
       db.update(schema.bots).set({
         losses: sql`${schema.bots.losses} + 1`,
@@ -417,11 +417,11 @@ async function executeFightRounds(fightId: string, botA: BotRecord, botB: BotRec
         winStreak: 0,
         tier: calculateTier(newLoserElo, loser.wins),
         lastFightAt: new Date().toISOString(),
-      }).where(eq(schema.bots.id, loserId))
+      }).where(eq(schema.bots.id, loserId)).run()
     } else {
       // Draw — update lastFightAt for both
-      db.update(schema.bots).set({ lastFightAt: new Date().toISOString() }).where(eq(schema.bots.id, botA.id))
-      db.update(schema.bots).set({ lastFightAt: new Date().toISOString() }).where(eq(schema.bots.id, botB.id))
+      db.update(schema.bots).set({ lastFightAt: new Date().toISOString() }).where(eq(schema.bots.id, botA.id)).run()
+      db.update(schema.bots).set({ lastFightAt: new Date().toISOString() }).where(eq(schema.bots.id, botB.id)).run()
     }
   })
 
@@ -479,7 +479,7 @@ export async function runFightAsync(botAId: string, botBId: string): Promise<str
       db.update(schema.fights).set({
         status: 'cancelled',
         endedAt: new Date().toISOString(),
-      }).where(eq(schema.fights.id, fightId))
+      }).where(eq(schema.fights.id, fightId)).run()
       fightEvents.cleanup(fightId)
     })
     .finally(() => {