fix(codex): pass budget-scaled maxRenderedContextChars to legacy mirrored-history projection

wings1029 · claude · wings1029 · commit b914c399dc6f · 2026-06-19T00:41:44.000+08:00
- Add maxRenderedContextChars to applyFreshThreadContinuityProjection (fresh thread legacy path) - Add maxRenderedContextChars to applyResumeStaleBindingContinuityProjection (stale binding legacy path) - Reuse existing resolveCodexContextEngineProjectionMaxChars / resolveCodexContextEngineProjectionReserveTokens helpers - Matches the active-context-engine pattern from PR #80761 Fixes #84084 Co-Authored-By: Claude <noreply@anthropic.com>
diff --git a/extensions/codex/src/app-server/run-attempt.ts b/extensions/codex/src/app-server/run-attempt.ts
@@ -908,6 +908,12 @@ export async function runCodexAppServerAttempt(
       assembledMessages: historyMessages,
       originalHistoryMessages: historyMessages,
       prompt: params.prompt,
+      maxRenderedContextChars: resolveCodexContextEngineProjectionMaxChars({
+        contextTokenBudget: params.contextTokenBudget,
+        reserveTokens: resolveCodexContextEngineProjectionReserveTokens({
+          config: params.config,
+        }),
+      }),
     });
     promptText = projection.promptText;
     prePromptMessageCount = projection.prePromptMessageCount;
@@ -1088,6 +1094,12 @@ export async function runCodexAppServerAttempt(
       assembledMessages: newerVisibleMessages,
       originalHistoryMessages: historyMessages,
       prompt: params.prompt,
+      maxRenderedContextChars: resolveCodexContextEngineProjectionMaxChars({
+        contextTokenBudget: params.contextTokenBudget,
+        reserveTokens: resolveCodexContextEngineProjectionReserveTokens({
+          config: params.config,
+        }),
+      }),
     });
     promptText = projection.promptText;
     prePromptMessageCount = projection.prePromptMessageCount;
