chore(integrations): update Kalshi get_balance, drop polymarket test, regen docs

Author: waleedlatif1

apps/docs/content/docs/en/tools/kalshi.mdx

@@ -229,7 +229,7 @@ Retrieve your account balance and portfolio value from Kalshi (V2 - exact API re
 | --------- | ---- | ----------- |
 | `balance` | number | Account balance in cents |
 | `portfolio_value` | number | Portfolio value in cents |
-| `updated_ts` | number | Unix timestamp of last update \(milliseconds\) |
+| `updated_ts` | number | Unix timestamp of last update \(seconds\) |
 
 ### `kalshi_get_positions`
 

apps/sim/tools/kalshi/get_balance.ts

@@ -138,6 +138,6 @@ export const kalshiGetBalanceV2Tool: ToolConfig<
   outputs: {
     balance: { type: 'number', description: 'Account balance in cents' },
     portfolio_value: { type: 'number', description: 'Portfolio value in cents' },
-    updated_ts: { type: 'number', description: 'Unix timestamp of last update (milliseconds)' },
+    updated_ts: { type: 'number', description: 'Unix timestamp of last update (seconds)' },
   },
 }