fix: /status shows incorrect context percentage — totalTokens clamped to contextTokens (#15114) (#15133)

Merged via /review-pr -> /prepare-pr -> /merge-pr.

Prepared head SHA: a489669fc7
Co-authored-by: echoVic <16428813+echoVic@users.noreply.github.com>
Co-authored-by: gumadeiras <5599352+gumadeiras@users.noreply.github.com>
Reviewed-by: @gumadeiras

src/auto-reply/reply/memory-flush.test.ts

@@ -113,6 +113,17 @@ describe("shouldRunMemoryFlush", () => {
       }),
     ).toBe(true);
   });
+
+  it("ignores stale cached totals", () => {
+    expect(
+      shouldRunMemoryFlush({
+        entry: { totalTokens: 96_000, totalTokensFresh: false, compactionCount: 1 },
+        contextWindowTokens: 100_000,
+        reserveTokensFloor: 5_000,
+        softThresholdTokens: 2_000,
+      }),
+    ).toBe(false);
+  });
 });
 
 describe("resolveMemoryFlushContextWindowTokens", () => {