fix(runtime): align compaction dedup with current contract

Generated-by: OpenAI Codex

Author: testikun

packages/runtime/src/__tests__/ai-sdk-backend.test.ts

@@ -4545,7 +4545,6 @@ describe('AiSdkBackend model history', () => {
       now: monotonicClock(),
       contextBudget: {
         name: 'in-flight-dedup-test',
-        maxHistoryEstimatedTokens: 10_000,
         charsPerToken: 1,
       },
       summarizeHistoryCompact: async () => {

packages/runtime/src/ai-sdk-compaction.ts

@@ -418,10 +418,6 @@ export class AiSdkCompaction {
               },
               newlyFoldedRuntimeEvents: [...newlyFoldedRuntimeEvents],
               ...(previousCheckpoint ? { previousCheckpoint } : {}),
-              inputBudget: {
-                maxEstimatedTokens: policy.maxHistoryEstimatedTokens ?? estimatedTokensBefore,
-                charsPerToken,
-              },
               abortSignal: historyCompactAbortController.signal,
               ...(tracker ? { providerRequestTracker: tracker } : {}),
             },
@@ -1160,12 +1156,6 @@ export class AiSdkCompaction {
             },
             ...(previousCheckpoint ? { previousCheckpoint } : {}),
             newlyFoldedRuntimeEvents: [...newlyFoldedRuntimeEvents],
-            inputBudget: {
-              ...(state.capacity !== undefined
-                ? { maxEstimatedTokens: Math.max(1, state.capacity - reserveTokens) }
-                : {}),
-              charsPerToken,
-            },
             ...(abortSignal ? { abortSignal } : {}),
             ...(midTurnTracker ? { providerRequestTracker: midTurnTracker } : {}),
           },