From 5d6d4ddfa620011e267d892b402751847d5ac0c3 Mon Sep 17 00:00:00 2001
From: Gustavo Madeira Santana <gumadeiras@gmail.com>
Date: Tue, 3 Mar 2026 16:18:48 -0500
Subject: [PATCH] Agent: ignore off-mode bootstrap signatures for once dedupe

---
 src/agents/bootstrap-budget.test.ts | 21 +++++++++++++++++++++
 src/agents/bootstrap-budget.ts      |  5 +++++
 2 files changed, 26 insertions(+)

diff --git a/src/agents/bootstrap-budget.test.ts b/src/agents/bootstrap-budget.test.ts
index 5625530608e..bee7a2d9036 100644
--- a/src/agents/bootstrap-budget.test.ts
+++ b/src/agents/bootstrap-budget.test.ts
@@ -125,6 +125,27 @@ describe("bootstrap prompt warnings", () => {
     expect(resolveBootstrapWarningSignaturesSeen(undefined)).toEqual([]);
   });
 
+  it("ignores single-signature fallback when warning mode is off", () => {
+    expect(
+      resolveBootstrapWarningSignaturesSeen({
+        bootstrapTruncation: {
+          warningMode: "off",
+          promptWarningSignature: "off-mode-signature",
+        },
+      }),
+    ).toEqual([]);
+
+    expect(
+      resolveBootstrapWarningSignaturesSeen({
+        bootstrapTruncation: {
+          warningMode: "off",
+          warningSignaturesSeen: ["prior-once-signature"],
+          promptWarningSignature: "off-mode-signature",
+        },
+      }),
+    ).toEqual(["prior-once-signature"]);
+  });
+
   it("dedupes warnings in once mode by signature", () => {
     const analysis = analyzeBootstrapBudget({
       files: [
diff --git a/src/agents/bootstrap-budget.ts b/src/agents/bootstrap-budget.ts
index 1aeef0e7e98..ddfd4fb5d06 100644
--- a/src/agents/bootstrap-budget.ts
+++ b/src/agents/bootstrap-budget.ts
@@ -100,6 +100,7 @@ function appendSeenSignature(signatures: string[], signature: string): string[]
 
 export function resolveBootstrapWarningSignaturesSeen(report?: {
   bootstrapTruncation?: {
+    warningMode?: BootstrapPromptWarningMode;
     warningSignaturesSeen?: string[];
     promptWarningSignature?: string;
   };
@@ -109,6 +110,10 @@ export function resolveBootstrapWarningSignaturesSeen(report?: {
   if (seenFromReport.length > 0) {
     return seenFromReport;
   }
+  // In off mode, signature metadata should not seed once-mode dedupe state.
+  if (truncation?.warningMode === "off") {
+    return [];
+  }
   const single =
     typeof truncation?.promptWarningSignature === "string"
       ? truncation.promptWarningSignature.trim()