fix(hooks): use actual context window token counts

Ultraworked with [Sisyphus](https://github.com/code-yeongyu/oh-my-openagent)

Co-authored-by: Sisyphus <clio-agent@sisyphuslabs.ai>

src/hooks/context-window-monitor.model-context-limits.test.ts

@@ -86,8 +86,8 @@ describe("context-window-monitor modelContextLimitsCache", () => {
 
     // then
     expect(output.output).toContain("context remaining")
-    expect(output.output).toContain("524,288-token context window")
-    expect(output.output).toContain("[Context Status: 72.5% used (380,000/524,288 tokens), 27.5% remaining]")
+    expect(output.output).toContain("262,144-token context window")
+    expect(output.output).toContain("[Context Status: 72.5% used (190,000/262,144 tokens), 27.5% remaining]")
     expect(output.output).not.toContain("1,000,000")
   })
 
@@ -215,9 +215,8 @@ describe("context-window-monitor modelContextLimitsCache", () => {
         const output = createOutput()
         await hook["tool.execute.after"]({ tool: "bash", sessionID, callID: "call_1" }, output)
 
-        // then — 360K/500K = 72%, above 70% threshold, uses cached 500K limit
         expect(output.output).toContain("context remaining")
-        expect(output.output).toContain("1,000,000-token context window")
+        expect(output.output).toContain("500,000-token context window")
       })
     })
   })
@@ -262,7 +261,7 @@ describe("context-window-monitor modelContextLimitsCache", () => {
 
         // then
         expect(output.output).toContain("context remaining")
-        expect(output.output).toContain("400,000-token context window")
+        expect(output.output).toContain("200,000-token context window")
       })
     })
   })

src/hooks/context-window-monitor.test.ts

@@ -106,7 +106,7 @@ describe("context-window-monitor", () => {
   // #given token usage exceeds 70% threshold
   // #when tool.execute.after is called
   // #then context reminder should be appended to output
-  it("should append context reminder with doubled displayed counts when usage exceeds threshold", async () => {
+  it("should append context reminder with actual token counts when usage exceeds threshold", async () => {
     const hook = createContextWindowMonitorHook(ctx as never)
     const sessionID = "ses_high_usage"
 
@@ -138,8 +138,8 @@ describe("context-window-monitor", () => {
     )
 
     expect(output.output).toContain("context remaining")
-    expect(output.output).toContain("400,000-token context window")
-    expect(output.output).toContain("[Context Status: 80.0% used (320,000/400,000 tokens), 20.0% remaining]")
+    expect(output.output).toContain("200,000-token context window")
+    expect(output.output).toContain("[Context Status: 80.0% used (160,000/200,000 tokens), 20.0% remaining]")
     expect(ctx.client.session.messages).not.toHaveBeenCalled()
   })
 

src/hooks/context-window-monitor.ts

@@ -6,14 +6,9 @@ import {
 import { createSystemDirective, SystemDirectiveTypes } from "../shared/system-directive"
 
 const CONTEXT_WARNING_THRESHOLD = 0.70
-const DISPLAY_TOKEN_COUNT_MULTIPLIER = 2
-
-function toDisplayTokenCount(actualTokenCount: number): number {
-  return actualTokenCount * DISPLAY_TOKEN_COUNT_MULTIPLIER
-}
 
 function createContextReminder(actualLimit: number): string {
-  const limitTokens = toDisplayTokenCount(actualLimit).toLocaleString()
+  const limitTokens = actualLimit.toLocaleString()
 
   return `${createSystemDirective(SystemDirectiveTypes.CONTEXT_WINDOW_MONITOR)}
 
@@ -72,8 +67,8 @@ export function createContextWindowMonitorHook(
 
     const usedPct = (actualUsagePercentage * 100).toFixed(1)
     const remainingPct = ((1 - actualUsagePercentage) * 100).toFixed(1)
-    const usedTokens = toDisplayTokenCount(totalInputTokens).toLocaleString()
-    const limitTokens = toDisplayTokenCount(actualLimit).toLocaleString()
+    const usedTokens = totalInputTokens.toLocaleString()
+    const limitTokens = actualLimit.toLocaleString()
 
     output.output += `\n\n${createContextReminder(actualLimit)}
 [Context Status: ${usedPct}% used (${usedTokens}/${limitTokens} tokens), ${remainingPct}% remaining]`