Revert EMULATOR_MODE to rcon default, restore RCON config

src/env.ts

@@ -40,11 +40,17 @@ const schema = z
 		SMTP_USER: z.string().optional(),
 		SMTP_PASSWORD: z.string().optional(),
 		SMTP_FROM: z.string().optional(),
-		// Emulator transport selection. "api" uses an HTTP endpoint that accepts the same
+		// RCON link to the Arcturus emulator (raw-JSON TCP protocol).
+		RCON_HOST: z.string().default("127.0.0.1"),
+		RCON_PORT: z.coerce.number().int().positive().default(3001),
+		RCON_TIMEOUT_MS: z.coerce.number().int().positive().default(10_000),
+		RCON_MAX_RETRIES: z.coerce.number().int().positive().default(3),
+		// Emulator transport selection. "rcon" uses the raw-JSON TCP protocol
+		// above; "api" uses an HTTP endpoint that accepts the same
 		// `{"key":...,"data":...}` payload (for emulators without RCON).
-		EMULATOR_MODE: z.enum(["rcon", "api"]).default("api"),
+		EMULATOR_MODE: z.enum(["rcon", "api"]).default("rcon"),
 		// HTTP endpoint used when EMULATOR_MODE=api. Required in that mode.
-		EMULATOR_API_URL: z.string().url(),
+		EMULATOR_API_URL: z.string().url().optional(),
 		// Optional bearer/key auth for the API transport. When set, it is sent
 		// as `${EMULATOR_API_KEY_HEADER}: ${EMULATOR_API_KEY}` (default header
 		// "Authorization").