diff --git a/config/platform-infra/webterm.yaml b/config/platform-infra/webterm.yaml
index 695bd1ad..d3339a65 100644
--- a/config/platform-infra/webterm.yaml
+++ b/config/platform-infra/webterm.yaml
@@ -49,14 +49,19 @@ browserOutputPolicy:
 browserPerformance:
   animationsEnabled: true
   defaultBackgroundMode: receive-only
+  defaultMobileTerminalPercent: 40
   backgroundModes:
     disconnect:
       label: 断开后台连接
     receive-only:
       label: 只接收数据
+    low-frequency:
+      label: 低频绘制
     live:
       label: 实时渲染
   deferredOutputMaxBytes: 524288
+  lowFrequencyRenderIntervalMs: 10000
+  lowFrequencyRenderJitterMs: 2000
   dashboardSampleWindowSeconds: 60
   dashboardRefreshIntervalMs: 1000
 
diff --git a/scripts/src/platform-infra-webterm.ts b/scripts/src/platform-infra-webterm.ts
index 99dd54db..9c62c2a2 100644
--- a/scripts/src/platform-infra-webterm.ts
+++ b/scripts/src/platform-infra-webterm.ts
@@ -66,9 +66,12 @@ interface BrowserOutputPolicy {
 
 interface BrowserPerformance {
   animationsEnabled: boolean;
-  defaultBackgroundMode: "disconnect" | "receive-only" | "live";
-  backgroundModes: Array<{ id: "disconnect" | "receive-only" | "live"; label: string }>;
+  defaultBackgroundMode: "disconnect" | "receive-only" | "low-frequency" | "live";
+  defaultMobileTerminalPercent: number;
+  backgroundModes: Array<{ id: "disconnect" | "receive-only" | "low-frequency" | "live"; label: string }>;
   deferredOutputMaxBytes: number;
+  lowFrequencyRenderIntervalMs: number;
+  lowFrequencyRenderJitterMs: number;
   dashboardSampleWindowSeconds: number;
   dashboardRefreshIntervalMs: number;
 }
@@ -477,6 +480,7 @@ function renderCompose(target: WebtermTarget): string {
     ...target.runtime.environment,
     WEBTERM_DATA_DOMAIN: target.runtime.runtimeDataDomain,
     WEBTERM_DATABASE_URL: "${WEBTERM_DATABASE_URL}",
+    AUTO_RESUME_CLI_PROMPT: target.runtime.autoResumePrompt.prompt,
     AUTO_START_SESSIONS_JSON: JSON.stringify(target.runtime.autoStartSessions.map((session) => ({
       ...session,
       command: resumeCommandWithPrompt(session, target.runtime.autoResumePrompt),
@@ -881,10 +885,10 @@ function parseBrowserOutputPolicy(record: Record<string, unknown>, path: string)
 }
 
 function parseBrowserPerformance(record: Record<string, unknown>, path: string): BrowserPerformance {
-  const allowedModes = ["disconnect", "receive-only", "live"] as const;
+  const allowedModes = ["disconnect", "receive-only", "low-frequency", "live"] as const;
   const defaultBackgroundMode = stringField(record, "defaultBackgroundMode", path);
   if (!allowedModes.includes(defaultBackgroundMode as typeof allowedModes[number])) {
-    throw new Error(`${path}.defaultBackgroundMode must be disconnect, receive-only or live`);
+    throw new Error(`${path}.defaultBackgroundMode must reference a supported mode`);
   }
   const modesRecord = recordField(record, "backgroundModes", path);
   const backgroundModes = allowedModes.map((id) => ({
@@ -896,8 +900,11 @@ function parseBrowserPerformance(record: Record<string, unknown>, path: string):
   return {
     animationsEnabled: booleanField(record, "animationsEnabled", path),
     defaultBackgroundMode: defaultBackgroundMode as BrowserPerformance["defaultBackgroundMode"],
+    defaultMobileTerminalPercent: integerInRangeField(record, "defaultMobileTerminalPercent", path, 20, 70),
     backgroundModes,
     deferredOutputMaxBytes: positiveIntegerField(record, "deferredOutputMaxBytes", path),
+    lowFrequencyRenderIntervalMs: positiveIntegerField(record, "lowFrequencyRenderIntervalMs", path),
+    lowFrequencyRenderJitterMs: integerField(record, "lowFrequencyRenderJitterMs", path),
     dashboardSampleWindowSeconds: positiveIntegerField(record, "dashboardSampleWindowSeconds", path),
     dashboardRefreshIntervalMs: positiveIntegerField(record, "dashboardRefreshIntervalMs", path),
   };
@@ -909,6 +916,12 @@ function positiveIntegerField(record: Record<string, unknown>, key: string, path
   return value;
 }
 
+function integerInRangeField(record: Record<string, unknown>, key: string, path: string, min: number, max: number): number {
+  const value = integerField(record, key, path);
+  if (value < min || value > max) throw new Error(`${path}.${key} must be from ${min} to ${max}`);
+  return value;
+}
+
 function parseLiteral<T extends string>(value: string, expected: T, path: string): T {
   if (value !== expected) throw new Error(`${path} must be ${expected}`);
   return expected;