feat: 移除反蒸馏代码

src/utils/betas.ts

@@ -15,7 +15,6 @@ import {
   PROMPT_CACHING_SCOPE_BETA_HEADER,
   REDACT_THINKING_BETA_HEADER,
   STRUCTURED_OUTPUTS_BETA_HEADER,
-  SUMMARIZE_CONNECTOR_TEXT_BETA_HEADER,
   TOKEN_EFFICIENT_TOOLS_BETA_HEADER,
   TOOL_SEARCH_BETA_HEADER_1P,
   TOOL_SEARCH_BETA_HEADER_3P,
@@ -276,27 +275,6 @@ export const getAllModelBetas = memoize((model: string): string[] => {
     betaHeaders.push(REDACT_THINKING_BETA_HEADER)
   }
 
-  // POC: server-side connector-text summarization (anti-distillation). The
-  // API buffers assistant text between tool calls, summarizes it, and returns
-  // the summary with a signature so the original can be restored on subsequent
-  // turns — same mechanism as thinking blocks. Ant-only while we measure
-  // TTFT/TTLT/capacity; betas already flow to tengu_api_success for splitting.
-  // Backend independently requires Capability.ANTHROPIC_INTERNAL_RESEARCH.
-  //
-  // USE_CONNECTOR_TEXT_SUMMARIZATION is tri-state: =1 forces on (opt-in even
-  // if GB is off), =0 forces off (opt-out of a GB rollout you were bucketed
-  // into), unset defers to GB.
-  if (
-    SUMMARIZE_CONNECTOR_TEXT_BETA_HEADER &&
-    process.env.USER_TYPE === 'ant' &&
-    includeFirstPartyOnlyBetas &&
-    !isEnvDefinedFalsy(process.env.USE_CONNECTOR_TEXT_SUMMARIZATION) &&
-    (isEnvTruthy(process.env.USE_CONNECTOR_TEXT_SUMMARIZATION) ||
-      getFeatureValue_CACHED_MAY_BE_STALE('tengu_slate_prism', false))
-  ) {
-    betaHeaders.push(SUMMARIZE_CONNECTOR_TEXT_BETA_HEADER)
-  }
-
   // Add context management beta for tool clearing (ant opt-in) or thinking preservation
   const antOptedIntoToolClearing =
     isEnvTruthy(process.env.USE_API_CONTEXT_MANAGEMENT) &&