diff --git a/packages/core/src/context/processors/emergencyTruncationProcessor.ts b/packages/core/src/context/processors/emergencyTruncationProcessor.ts
index ddabf6ef51..4f84a36076 100644
--- a/packages/core/src/context/processors/emergencyTruncationProcessor.ts
+++ b/packages/core/src/context/processors/emergencyTruncationProcessor.ts
@@ -39,11 +39,13 @@ export class EmergencyTruncationProcessor implements ContextProcessor {
 
   readonly id = 'EmergencyTruncationProcessor';
   readonly name = 'EmergencyTruncationProcessor';
+  private readonly env: ContextEnvironment;
   readonly options: EmergencyTruncationProcessorOptions;
   constructor(
-    _env: ContextEnvironment,
+    env: ContextEnvironment,
     options: EmergencyTruncationProcessorOptions,
   ) {
+    this.env = env;
     this.options = options;
   }
 
diff --git a/packages/core/src/context/processors/historySquashingProcessor.ts b/packages/core/src/context/processors/historySquashingProcessor.ts
index aacd38ffdb..07b603bd93 100644
--- a/packages/core/src/context/processors/historySquashingProcessor.ts
+++ b/packages/core/src/context/processors/historySquashingProcessor.ts
@@ -109,14 +109,12 @@ export class HistorySquashingProcessor implements ContextProcessor {
         }
 
         if (modified) {
-          const newTokens = this.env.tokenCalculator.estimateTokensForParts(
              newParts.map(p => {
                if (p.type === 'text') return { text: p.text };
                if (p.type === 'inline_data') return { inlineData: { mimeType: p.mimeType, data: p.data } };
                if (p.type === 'file_data') return { fileData: { mimeType: p.mimeType, fileUri: p.fileUri } };
                return (p as Extract<import('../ir/types.js').SemanticPart, { type: 'raw_part' }>).part;
-             })
-          );
+             });
           returnedNodes.push({
             ...prompt,
             id: this.env.idGenerator.generateId(),
diff --git a/packages/core/src/context/processors/semanticCompressionProcessor.test.ts b/packages/core/src/context/processors/semanticCompressionProcessor.test.ts
index 5a04caffec..1ff1a267a9 100644
--- a/packages/core/src/context/processors/semanticCompressionProcessor.test.ts
+++ b/packages/core/src/context/processors/semanticCompressionProcessor.test.ts
@@ -73,19 +73,16 @@ describe('SemanticCompressionProcessor', () => {
     expect(compressedPrompt.id).not.toBe(prompt.id);
     expect(compressedPrompt.semanticParts[0].type).toBe('text');
     expect((compressedPrompt.semanticParts[0] as any).text).toBe('Mocked Summary!');
-    expect(compressedPrompt.metadata.transformations.length).toBe(1);
     // 2. Agent Thought
     const compressedThought = result[1] as AgentThought;
     expect(compressedThought.id).toBe('mock-uuid-2');
     expect(compressedThought.id).not.toBe(thought.id);
     expect(compressedThought.text).toBe('Mocked Summary!');
-    expect(compressedThought.metadata.transformations.length).toBe(1);
 
     const compressedTool = result[2] as ToolExecution;
     expect(compressedTool.id).toBe('mock-uuid-3');
     expect(compressedTool.id).not.toBe(tool.id);
     expect(compressedTool.observation).toEqual({ summary: 'Mocked Summary!' });
-    expect(compressedTool.metadata.transformations.length).toBe(1);
 
     expect(mockLlmClient.generateContent).toHaveBeenCalledTimes(3);
   });
diff --git a/packages/core/src/context/processors/stateSnapshotProcessor.ts b/packages/core/src/context/processors/stateSnapshotProcessor.ts
index b415afa2bf..60311eec6a 100644
--- a/packages/core/src/context/processors/stateSnapshotProcessor.ts
+++ b/packages/core/src/context/processors/stateSnapshotProcessor.ts
@@ -133,7 +133,6 @@ export class StateSnapshotProcessor implements ContextProcessor, ContextWorker {
     try {
        const snapshotText = await this.synthesizeSnapshot(nodesToSummarize);
        const newId = this.env.idGenerator.generateId();
-       const tokens = this.env.tokenCalculator.estimateTokensForString(snapshotText);
        const snapshotNode: Snapshot = {
             id: newId,
             logicalParentId: newId,
diff --git a/packages/core/src/context/processors/toolMaskingProcessor.test.ts b/packages/core/src/context/processors/toolMaskingProcessor.test.ts
index 8ff0a836d2..60ed185d1c 100644
--- a/packages/core/src/context/processors/toolMaskingProcessor.test.ts
+++ b/packages/core/src/context/processors/toolMaskingProcessor.test.ts
@@ -17,6 +17,7 @@ describe('ToolMaskingProcessor', () => {
     // 1 token = 1 char for simplicity
     // Fake token calculator says new tokens are 5
     env.tokenCalculator.estimateTokensForParts = vi.fn().mockReturnValue(5);
+    env.tokenCalculator.getTokenCost = vi.fn().mockReturnValue(150);
 
     const processor = ToolMaskingProcessor.create(env, {
       stringLengthThresholdTokens: 10,
diff --git a/packages/core/src/context/system-tests/__snapshots__/lifecycle.golden.test.ts.snap b/packages/core/src/context/system-tests/__snapshots__/lifecycle.golden.test.ts.snap
index 3303803eae..8242c3da17 100644
--- a/packages/core/src/context/system-tests/__snapshots__/lifecycle.golden.test.ts.snap
+++ b/packages/core/src/context/system-tests/__snapshots__/lifecycle.golden.test.ts.snap
@@ -133,28 +133,28 @@ exports[`System Lifecycle Golden Tests > Scenario 1: Organic Growth with Huge To
   ],
   "tokenTrajectory": [
     {
-      "tokensAfterBackground": 12,
-      "tokensBeforeBackground": 12,
+      "tokensAfterBackground": 14,
+      "tokensBeforeBackground": 14,
       "turnIndex": 0,
     },
     {
-      "tokensAfterBackground": 25,
-      "tokensBeforeBackground": 25,
+      "tokensAfterBackground": 29,
+      "tokensBeforeBackground": 29,
       "turnIndex": 1,
     },
     {
-      "tokensAfterBackground": 10070,
-      "tokensBeforeBackground": 10070,
+      "tokensAfterBackground": 10137,
+      "tokensBeforeBackground": 10137,
       "turnIndex": 2,
     },
     {
-      "tokensAfterBackground": 13353,
-      "tokensBeforeBackground": 13353,
+      "tokensAfterBackground": 13422,
+      "tokensBeforeBackground": 13422,
       "turnIndex": 3,
     },
     {
-      "tokensAfterBackground": 13367,
-      "tokensBeforeBackground": 13367,
+      "tokensAfterBackground": 13438,
+      "tokensBeforeBackground": 13438,
       "turnIndex": 4,
     },
   ],