diff --git a/src/resources/extensions/gsd/auto-dispatch.ts b/src/resources/extensions/gsd/auto-dispatch.ts
index 942c98714..b0fa44e82 100644
--- a/src/resources/extensions/gsd/auto-dispatch.ts
+++ b/src/resources/extensions/gsd/auto-dispatch.ts
@@ -174,9 +174,9 @@ export function incrementUatCount(basePath: string, mid: string, sid: string): n
  * @see https://github.com/gsd-build/gsd-2/issues/2931
  */
 export function isVerificationNotApplicable(value: string): boolean {
-  const v = (value ?? "").toLowerCase().trim();
+  const v = (value ?? "").toLowerCase().trim().replace(/[.\s]+$/, "");
   if (!v || v === "none") return true;
-  return /^(?:none[\s._-]*(?:required|needed|planned)?|n\/?a|not[\s._-]+(?:applicable|required|needed)|no[\s._-]+operational[\s\S]*)$/i.test(v);
+  return /^(?:none[\s._-]*(?:required|needed|planned)?|n\/?a|not[\s._-]+(?:applicable|required|needed|provided)|no[\s._-]+operational[\s\S]*)$/i.test(v);
 }
 
 // ─── Rules ────────────────────────────────────────────────────────────────
diff --git a/src/resources/extensions/gsd/tests/verification-operational-gate.test.ts b/src/resources/extensions/gsd/tests/verification-operational-gate.test.ts
index a9ae8d83a..3a17a5488 100644
--- a/src/resources/extensions/gsd/tests/verification-operational-gate.test.ts
+++ b/src/resources/extensions/gsd/tests/verification-operational-gate.test.ts
@@ -80,3 +80,18 @@ test("isVerificationNotApplicable: 'Verify API response times under load' requir
 test("isVerificationNotApplicable: 'Monitor error rates for 24h' requires verification", () => {
   assert.equal(isVerificationNotApplicable("Monitor error rates for 24h"), false);
 });
+
+// Regression: #3634 — "Not provided." default from plan-milestone
+test("isVerificationNotApplicable: 'Not provided.' is not applicable (#3634)", () => {
+  assert.equal(isVerificationNotApplicable("Not provided."), true);
+});
+
+test("isVerificationNotApplicable: 'Not provided' (no period) is not applicable (#3634)", () => {
+  assert.equal(isVerificationNotApplicable("Not provided"), true);
+});
+
+test("isVerificationNotApplicable: trailing period does not defeat match (#3634)", () => {
+  assert.equal(isVerificationNotApplicable("None required."), true);
+  assert.equal(isVerificationNotApplicable("N/A."), true);
+  assert.equal(isVerificationNotApplicable("Not applicable."), true);
+});
diff --git a/src/resources/extensions/gsd/tools/plan-milestone.ts b/src/resources/extensions/gsd/tools/plan-milestone.ts
index e4f3f72dd..cc24aeb2a 100644
--- a/src/resources/extensions/gsd/tools/plan-milestone.ts
+++ b/src/resources/extensions/gsd/tools/plan-milestone.ts
@@ -48,13 +48,13 @@ export interface PlanMilestoneParams {
   keyRisks?: Array<{ risk: string; whyItMatters: string }>;
   /** @optional — defaults to [] when omitted */
   proofStrategy?: Array<{ riskOrUnknown: string; retireIn: string; whatWillBeProven: string }>;
-  /** @optional — defaults to "Not provided." when omitted */
+  /** @optional — defaults to "" when omitted */
   verificationContract?: string;
-  /** @optional — defaults to "Not provided." when omitted */
+  /** @optional — defaults to "" when omitted */
   verificationIntegration?: string;
-  /** @optional — defaults to "Not provided." when omitted */
+  /** @optional — defaults to "" when omitted */
   verificationOperational?: string;
-  /** @optional — defaults to "Not provided." when omitted */
+  /** @optional — defaults to "" when omitted */
   verificationUat?: string;
   /** @optional — defaults to [] when omitted */
   definitionOfDone?: string[];
@@ -168,10 +168,10 @@ function validateParams(params: PlanMilestoneParams): PlanMilestoneParams {
     successCriteria: params.successCriteria ? validateStringArray(params.successCriteria, "successCriteria") : [],
     keyRisks: params.keyRisks ? validateRiskEntries(params.keyRisks) : [],
     proofStrategy: params.proofStrategy ? validateProofStrategy(params.proofStrategy) : [],
-    verificationContract: params.verificationContract ?? "Not provided.",
-    verificationIntegration: params.verificationIntegration ?? "Not provided.",
-    verificationOperational: params.verificationOperational ?? "Not provided.",
-    verificationUat: params.verificationUat ?? "Not provided.",
+    verificationContract: params.verificationContract ?? "",
+    verificationIntegration: params.verificationIntegration ?? "",
+    verificationOperational: params.verificationOperational ?? "",
+    verificationUat: params.verificationUat ?? "",
     definitionOfDone: params.definitionOfDone ? validateStringArray(params.definitionOfDone, "definitionOfDone") : [],
     requirementCoverage: params.requirementCoverage ?? "Not provided.",
     boundaryMapMarkdown: params.boundaryMapMarkdown ?? "Not provided.",