diff --git a/.changeset/fn-8962-mission-blocked-clear.md b/.changeset/fn-8962-mission-blocked-clear.md
new file mode 100644
index 0000000000..f0fdfd93cb
--- /dev/null
+++ b/.changeset/fn-8962-mission-blocked-clear.md
@@ -0,0 +1,7 @@
+---
+"@runfusion/fusion": minor
+---
+
+summary: Let operators clear stale mission blocked badges without resuming automation.
+category: feature
+dev: Adds the audited clearMissionBlockedStatus primitive and REST pair; new surfaces use canonical blocker descriptors while resume retains its legacy payload.
diff --git a/docs/missions.md b/docs/missions.md
index 23f1ad41aa..75990a6af3 100644
--- a/docs/missions.md
+++ b/docs/missions.md
@@ -150,6 +150,14 @@ Mission detail refreshes now preserve expanded milestone/slice state and keep th
 
 Mission, milestone, slice, and feature read-only text surfaces in Mission Manager render Markdown (GFM) for descriptions, verification, and acceptance criteria; edit forms continue to use raw plain-text `<textarea>` inputs.
 
+### Clearing a stale mission blocked badge
+
+Use **Clear blocked status** when the mission-level `blocked` badge is stale. It recomputes and records the mission status with an attributed audit event, but does **not** resume the mission, unpause linked tasks, re-arm autopilot, or clear lineage stops. **Resume** remains the separate operation that reactivates execution.
+
+`MissionBlockerDescriptor` is the canonical diagnosis shape: `{ featureId, reason, source }`, where `source` is `feature-stop` or `lineage-stop`. The diagnostics and clear responses use this deduplicated shape. For backward compatibility, a `POST /api/missions/:missionId/resume` `409 MISSION_RESUME_CONFLICT` continues to return its legacy undeduplicated `{ id, reason }[]` blockers.
+
+Feature-validation repair controls repair feature state only; they intentionally do not modify a mission-level status badge.
+
 ### CLI
 
 ```bash
@@ -179,6 +187,8 @@ Fusion surfaces the persisted mission↔goal linkage through REST, CLI, and pi-e
 | `PUT /api/missions/:missionId/goals` | Replace the full linked-goal set with body `{ goalIds: string[] }`. Duplicate ids are deduplicated before reconciliation. |
 | `POST /api/missions/:missionId/goals/:goalId` | Idempotently link one goal to a mission. |
 | `DELETE /api/missions/:missionId/goals/:goalId` | Idempotently unlink one goal from a mission. |
+| `GET /api/missions/:missionId/blocked-diagnostics` | Return the read-only blocked-badge diagnosis: mission status, recomputed status, clearability, resumability, and canonical blockers. |
+| `POST /api/missions/:missionId/clear-blocked` | Clear only a stale mission `blocked` badge. Optional `{ reason }` is bounded and audit-attributed; it returns `{ mission, blockers }`. |
 
 The mission detail payload keeps `linkedGoals` separate from the milestone tree so read paths can surface strategy context without traversing slices/features. All goal-link write endpoints preserve the same invariant: missing goals on link write paths (`POST /api/missions`, `PATCH /api/missions/:missionId`, `PUT /api/missions/:missionId/goals`, `POST /api/missions/:missionId/goals/:goalId`) reject with `400 { code: "GOAL_NOT_FOUND" }`, archived goals reject with `400 { code: "GOAL_ARCHIVED" }`, duplicate/relinked ids are no-ops, and the `DELETE /api/missions/:missionId/goals/:goalId` unlink path treats unknown goals as a `404` while remaining allowed even after a goal is archived.
 
@@ -629,7 +639,7 @@ A feature transitions to `blocked` when:
 - `MilestoneValidationRollup.state` reflects `blocked` assertions
 - The feature remains in `blocked` state until operator intervention
 - Deleting a generated fix, or archiving/deleting its generated task, records a durable root-scoped `operator-intervention` stop in the same transaction as unlink/removal. Recovery, duplicate delivery, unarchive, task/root recreation, and relinking cannot mint a sibling. The stop remains even if a hierarchy cascade removes root and lineage rows.
-- `POST /api/missions/:missionId/resume` is the sole resume seam. It atomically clears only operator-intervention stops, preserves attempt counts, moves extant roots to `needs_fix`, and activates the mission. If any root is budget-exhausted or legacy-unknown, it returns a typed `MISSION_RESUME_CONFLICT` with canonical root IDs/reason categories and changes no root, tombstone, counter, or mission state.
+- `POST /api/missions/:missionId/resume` is the sole resume seam. It atomically clears only operator-intervention stops, preserves attempt counts, moves extant roots to `needs_fix`, and activates the mission. If any root is budget-exhausted or legacy-unknown, it returns a typed `MISSION_RESUME_CONFLICT` with its legacy `{ id, reason }[]` blocker entries and changes no root, tombstone, counter, or mission state.
 
 On engine restart, `recoverActiveMissions()` re-enqueues features in `validating` or `needs_fix` states, ensuring no validation work is lost. It also re-triggers `implementing` features whose linked task is already `done`/`archived` and whose assertion validation has not passed yet. When the stale-run reaper has already converted an abandoned validator run into `needs_fix`, `processTaskOutcome()` promotes the feature back through `implementing` and re-validates instead of skipping it. The same recovery path is replayed during periodic self-heal maintenance, so historically stranded `implementing` features can self-heal without requiring an engine restart.
 
diff --git a/packages/core/src/__tests__/mission-blocked-clear.test.ts b/packages/core/src/__tests__/mission-blocked-clear.test.ts
new file mode 100644
index 0000000000..69635e50ac
--- /dev/null
+++ b/packages/core/src/__tests__/mission-blocked-clear.test.ts
@@ -0,0 +1,40 @@
+import { describe, expect, it } from "vitest";
+import { classifyMissionResumeBlockers } from "../missions/mission-types.js";
+
+describe("classifyMissionResumeBlockers", () => {
+  it("keeps the legacy resume projection while offering deduplicated canonical diagnostics", () => {
+    const result = classifyMissionResumeBlockers({
+      rootFeatures: [
+        { id: "f-budget", implementationStopReason: "budget-exhausted" },
+        { id: "f-operator", implementationStopReason: "operator-intervention" },
+        { id: "f-legacy", implementationStopReason: undefined },
+      ],
+      lineageStops: [
+        { rootFeatureId: "f-budget", reason: "budget-exhausted" },
+        { rootFeatureId: "f-budget", reason: "other-stop" },
+        { rootFeatureId: "f-lineage", reason: "budget-exhausted" },
+        { rootFeatureId: "f-operator", reason: "operator-intervention" },
+      ],
+    });
+    expect(result.blockers).toEqual([
+      { featureId: "f-budget", reason: "budget-exhausted", source: "feature-stop" },
+      { featureId: "f-budget", reason: "other-stop", source: "lineage-stop" },
+      { featureId: "f-legacy", reason: "legacy-unknown-stop", source: "feature-stop" },
+      { featureId: "f-lineage", reason: "budget-exhausted", source: "lineage-stop" },
+    ]);
+    expect(result.resumeConflictBlockers).toEqual([
+      { id: "f-budget", reason: "budget-exhausted" },
+      { id: "f-budget", reason: "budget-exhausted" },
+      { id: "f-budget", reason: "other-stop" },
+      { id: "f-legacy", reason: "legacy-unknown-stop" },
+      { id: "f-lineage", reason: "budget-exhausted" },
+    ]);
+    expect(result.clearableFeatureIds).toEqual(["f-operator", "f-budget"]);
+  });
+
+  it("returns empty projections when there are no stops", () => {
+    expect(classifyMissionResumeBlockers({ rootFeatures: [], lineageStops: [] })).toEqual({
+      blockers: [], resumeConflictBlockers: [], clearableFeatureIds: [],
+    });
+  });
+});
diff --git a/packages/core/src/__tests__/postgres/mission-store.pg.test.ts b/packages/core/src/__tests__/postgres/mission-store.pg.test.ts
index 26b340400c..6cdd5588c8 100644
--- a/packages/core/src/__tests__/postgres/mission-store.pg.test.ts
+++ b/packages/core/src/__tests__/postgres/mission-store.pg.test.ts
@@ -28,6 +28,8 @@ import {
 import * as schema from "../../postgres/schema/index.js";
 import {
   AsyncMissionStore,
+  MissionBlockedClearConflictError,
+  MissionResumeConflictError,
   createMission as createMissionRow,
   createMilestone as createMilestoneRow,
   deleteMission as deleteMissionRow,
@@ -1052,6 +1054,75 @@ pgTest("MissionStore (PostgreSQL backend mode)", () => {
     expect(stops).toMatchObject([{ reason: "operator-intervention", origin: "task-archive" }]);
   });
 
+  it("clears only a stale blocked mission badge with one attributed audit event", async () => {
+    const m = missions();
+    const mission = await m.createMission({ title: "Clear stale blocked badge" });
+    await m.updateMission(mission.id, { status: "blocked" });
+    const before = (await m.getMissionEvents(mission.id, { limit: 20 })).events.length;
+    const cleared = await m.clearMissionBlockedStatus(mission.id, { actor: { type: "operator", id: "operator", source: "dashboard" }, reason: "resolved" });
+    expect(cleared.mission.status).toBe("planning");
+    expect(cleared.blockers).toEqual([]);
+    const events = (await m.getMissionEvents(mission.id, { limit: 20 })).events;
+    expect(events).toHaveLength(before + 1);
+    expect(events[0]).toMatchObject({ eventType: "mission_status_changed", metadata: expect.objectContaining({ from: "blocked", to: "planning", repairAction: "clear-blocked", reason: "resolved", actor: { type: "operator", id: "operator", source: "dashboard" } }) });
+    await expect(m.clearMissionBlockedStatus(mission.id, { actor: { type: "operator", id: "operator", source: "dashboard" } })).rejects.toBeInstanceOf(MissionBlockedClearConflictError);
+  });
+
+  /*
+  FNXC:MissionBlockedRepair 2026-08-11-03:24:
+  Clearing a stale mission badge is deliberately non-destructive. Exercise the persisted
+  feature-stop and lineage-stop fixture so this transaction cannot accidentally launder the
+  records that still make Resume unsafe, while the legacy conflict wire remains duplicated.
+  */
+  it("clears a blocked badge without laundering persisted stop records", async () => {
+    const m = missions();
+    const mission = await m.createMission({ title: "Persisted blocked repair" });
+    const milestone = await m.addMilestone(mission.id, { title: "MS" });
+    const slice = await m.addSlice(milestone.id, { title: "SL" });
+    const root = await m.addFeature(slice.id, { title: "Budget-exhausted root" });
+    const stoppedAt = "2026-08-11T03:24:00.000Z";
+
+    await h.layer().db.update(schema.project.missionFeatures)
+      .set({
+        loopState: "blocked",
+        implementationStopReason: "budget-exhausted",
+        implementationStoppedAt: stoppedAt,
+        implementationStopOrigin: "validator-budget",
+      })
+      .where(sql`${schema.project.missionFeatures.id} = ${root.id}`);
+    await h.layer().db.insert(schema.project.missionLineageStops).values({
+      projectId: "mission-store-pg-test",
+      rootFeatureId: root.id,
+      missionId: mission.id,
+      reason: "budget-exhausted",
+      stoppedAt,
+      origin: "validator-budget",
+    });
+    await m.updateMission(mission.id, { status: "blocked" });
+
+    const featureBefore = await m.getFeature(root.id);
+    const stopsBefore = await h.layer().db.select().from(schema.project.missionLineageStops)
+      .where(sql`${schema.project.missionLineageStops.rootFeatureId} = ${root.id}`);
+    const cleared = await m.clearMissionBlockedStatus(mission.id, {
+      actor: { type: "operator", id: "operator", source: "dashboard" },
+      reason: "badge is stale",
+    });
+
+    expect(cleared.mission.status).toBe(await m.computeMissionStatus(mission.id));
+    expect(cleared.blockers).toEqual([
+      { featureId: root.id, reason: "budget-exhausted", source: "feature-stop" },
+    ]);
+    expect(await m.getFeature(root.id)).toEqual(featureBefore);
+    expect(await h.layer().db.select().from(schema.project.missionLineageStops)
+      .where(sql`${schema.project.missionLineageStops.rootFeatureId} = ${root.id}`)).toEqual(stopsBefore);
+    await expect(m.resumeMission(mission.id)).rejects.toMatchObject({
+      blockers: [
+        { id: root.id, reason: "budget-exhausted" },
+        { id: root.id, reason: "budget-exhausted" },
+      ],
+    });
+  });
+
   it("records generated-feature deletion as a durable root stop and resumes only explicitly", async () => {
     const m = missions();
     const mission = await m.createMission({ title: "Operator stop" });
diff --git a/packages/core/src/async-stores/async-mission-store.ts b/packages/core/src/async-stores/async-mission-store.ts
index eb1e10059a..c53244ea1b 100644
--- a/packages/core/src/async-stores/async-mission-store.ts
+++ b/packages/core/src/async-stores/async-mission-store.ts
@@ -14,7 +14,7 @@ import { EventEmitter } from "node:events";
 import { and, desc, eq, inArray, notInArray, sql } from "drizzle-orm";
 import * as schema from "../postgres/schema/index.js";
 import type { AsyncDataLayer } from "../postgres/data-layer.js";
-import { boundMissionEventReason, FEATURE_LOOP_REPAIR_TRANSITIONS, buildMissionStatusEventMetadata, featureValidationRepairEligibility, FEATURE_LOOP_TRANSITIONS, normalizeMissionAssertionType, normalizeMissionTransitionActorForEvent, renderValidationCause, selectNextSerialMissionSlice } from "../missions/mission-types.js";
+import { boundMissionEventReason, classifyMissionResumeBlockers, FEATURE_LOOP_REPAIR_TRANSITIONS, buildMissionStatusEventMetadata, featureValidationRepairEligibility, FEATURE_LOOP_TRANSITIONS, normalizeMissionAssertionType, normalizeMissionTransitionActorForEvent, renderValidationCause, selectNextSerialMissionSlice } from "../missions/mission-types.js";
 import type {
   Mission,
   Milestone,
@@ -50,6 +50,8 @@ import type {
   MissionTransitionActor,
   MissionUpdateOptions,
   MissionFeatureRepairGroundTruth,
+  MissionBlockerDescriptor,
+  MissionBlockedDiagnostics,
 } from "../missions/mission-types.js";
 import type { Goal } from "../goals/goal-types.js";
 import {
@@ -231,6 +233,14 @@ export class MissionResumeConflictError extends Error {
   }
 }
 
+/** Raised when a clear request races a prior clear or targets a non-blocked mission. */
+export class MissionBlockedClearConflictError extends Error {
+  constructor(public readonly status: MissionStatus) {
+    super(`Mission is not blocked (status: ${status})`);
+    this.name = "MissionBlockedClearConflictError";
+  }
+}
+
 /** Raised when a stale caller view offers an action no longer supported by the locked feature. */
 export class RepairNotEligibleError extends Error {
   constructor(featureId: string, action: string) {
@@ -680,6 +690,65 @@ export class AsyncMissionStore extends EventEmitter<MissionStoreEvents> {
     this.emit("mission:deleted", id);
   }
 
+  private async getMissionBlockedDescriptorsWithHandle(handle: QueryHandle, missionId: string, lockStops = false): Promise<MissionBlockerDescriptor[]> {
+    const allFeatures = await listAllFeatures(handle);
+    const featureMission = new Map<string, string>();
+    for (const feature of allFeatures) {
+      const slice = await getSlice(handle, feature.sliceId);
+      const milestone = slice ? await getMilestone(handle, slice.milestoneId) : undefined;
+      if (milestone) featureMission.set(feature.id, milestone.missionId);
+    }
+    const stopsQuery = handle.select().from(schema.project.missionLineageStops)
+      .where(and(eq(schema.project.missionLineageStops.projectId, missionProjectId()), eq(schema.project.missionLineageStops.missionId, missionId)));
+    const stops = lockStops ? await stopsQuery.for("update") : await stopsQuery;
+    const roots = allFeatures.filter((feature) => featureMission.get(feature.id) === missionId && !feature.generatedFromFeatureId && feature.loopState === "blocked");
+    return classifyMissionResumeBlockers({ rootFeatures: roots, lineageStops: stops }).blockers;
+  }
+
+  async getMissionBlockedDiagnostics(missionId: string): Promise<MissionBlockedDiagnostics> {
+    const mission = await getMission(this.db, missionId);
+    if (!mission) throw new Error(`Mission ${missionId} not found`);
+    const [recomputedStatus, blockers] = await Promise.all([
+      this.computeMissionStatusWithHandle(this.db, missionId),
+      this.getMissionBlockedDescriptorsWithHandle(this.db, missionId),
+    ]);
+    return { missionId, status: mission.status, recomputedStatus, clearable: mission.status === "blocked", resumable: mission.status === "blocked" && blockers.length === 0, blockers };
+  }
+
+  /**
+   * FNXC:MissionBlockedRepair 2026-08-11-02:56:
+   * Clearing repairs only a stale mission badge. It never resumes automation, unpauses tasks, or
+   * launders feature and lineage stops; Resume remains the sole path that changes those states.
+   * The legacy synchronous MissionStore is not constructed at runtime, so it intentionally has no
+   * parallel primitive.
+   */
+  async clearMissionBlockedStatus(missionId: string, options: { actor: MissionTransitionActor; reason?: string }): Promise<{ mission: Mission; blockers: MissionBlockerDescriptor[] }> {
+    const result = await this.layer.transactionImmediate(async (tx) => {
+      const mission = await getMission(tx, missionId);
+      if (!mission) throw new Error(`Mission ${missionId} not found`);
+      // Match resume's lock before deciding whether the stale badge can be cleared.
+      await tx.select().from(schema.project.missions).where(eq(schema.project.missions.id, missionId)).for("update");
+      const locked = await getMission(tx, missionId);
+      if (!locked) throw new Error(`Mission ${missionId} not found`);
+      if (locked.status !== "blocked") throw new MissionBlockedClearConflictError(locked.status);
+      const blockers = await this.getMissionBlockedDescriptorsWithHandle(tx, missionId, true);
+      const status = await this.computeMissionStatusWithHandle(tx, missionId);
+      const updated = { ...locked, status, updatedAt: new Date().toISOString() };
+      await updateMission(tx, updated);
+      const event: MissionEvent = {
+        id: this.generateId("ME"), missionId, eventType: "mission_status_changed",
+        description: "Mission blocked status cleared",
+        metadata: buildMissionStatusEventMetadata({ entity: "mission", field: "status", from: "blocked", to: status, ids: { missionId, repairAction: "clear-blocked" }, actor: options.actor, reason: options.reason }),
+        timestamp: new Date().toISOString(), seq: (await getMaxEventSeq(tx)) + 1,
+      };
+      await insertMissionEvent(tx, event);
+      return { mission: updated, blockers, event };
+    });
+    this.emit("mission:updated", result.mission);
+    this.emit("mission:event", result.event);
+    return { mission: result.mission, blockers: result.blockers };
+  }
+
   /**
    * FNXC:MissionLineageBudget 2026-07-22-12:00:
    * Resume is the only seam that clears operator intervention. Classify every
@@ -700,16 +769,13 @@ export class AsyncMissionStore extends EventEmitter<MissionStoreEvents> {
       const stops = await tx.select().from(schema.project.missionLineageStops)
         .where(and(eq(schema.project.missionLineageStops.projectId, missionProjectId()), eq(schema.project.missionLineageStops.missionId, id))).for("update");
       const roots = allFeatures.filter((feature) => featureMission.get(feature.id) === id && !feature.generatedFromFeatureId && feature.loopState === "blocked");
-      const stopIds = new Set(stops.map((stop) => stop.rootFeatureId));
-      const blockers = roots.filter((root) => root.implementationStopReason !== "operator-intervention")
-        .map((root) => ({ id: root.id, reason: root.implementationStopReason ?? "legacy-unknown-stop" }));
-      for (const stop of stops) if (stop.reason !== "operator-intervention") blockers.push({ id: stop.rootFeatureId, reason: stop.reason });
-      if (blockers.length > 0) {
-        const stable = blockers.sort((a, b) => a.id.localeCompare(b.id));
-        throw new MissionResumeConflictError(stable);
+      const classified = classifyMissionResumeBlockers({ rootFeatures: roots, lineageStops: stops });
+      if (classified.resumeConflictBlockers.length > 0) {
+        throw new MissionResumeConflictError(classified.resumeConflictBlockers);
       }
+      const clearableFeatureIds = new Set(classified.clearableFeatureIds);
       for (const root of roots) {
-        if (root.implementationStopReason === "operator-intervention" || stopIds.has(root.id)) {
+        if (clearableFeatureIds.has(root.id)) {
           await updateFeature(tx, { ...root, loopState: "needs_fix", implementationStopReason: undefined, implementationStoppedAt: undefined, implementationStopOrigin: undefined, updatedAt: new Date().toISOString() });
         }
       }
@@ -2779,7 +2845,11 @@ export class AsyncMissionStore extends EventEmitter<MissionStoreEvents> {
   }
 
   async computeMissionStatus(missionId: string): Promise<MissionStatus> {
-    const milestones = await listMilestones(this.db, missionId);
+    return this.computeMissionStatusWithHandle(this.db, missionId);
+  }
+
+  private async computeMissionStatusWithHandle(handle: QueryHandle, missionId: string): Promise<MissionStatus> {
+    const milestones = await listMilestones(handle, missionId);
     if (milestones.length === 0) return "planning";
     const allComplete = milestones.every((m) => m.status === "complete");
     if (allComplete) return "complete";
diff --git a/packages/core/src/index.gate.ts b/packages/core/src/index.gate.ts
index c6853767b4..0f17b201d3 100644
--- a/packages/core/src/index.gate.ts
+++ b/packages/core/src/index.gate.ts
@@ -1641,6 +1641,9 @@ export type {
   MissionTransitionActorType,
   MissionTransitionActor,
   MissionUpdateOptions,
+  MissionBlockerSource,
+  MissionBlockerDescriptor,
+  MissionBlockedDiagnostics,
   AutopilotStatus,
   Mission,
   MissionBranchStrategy,
@@ -1689,6 +1692,7 @@ export type {
   MilestoneValidationUpdatedPayload,
 } from "./missions/mission-types.js";
 export { MissionStore } from "./missions/mission-store.js";
+export { MissionBlockedClearConflictError } from "./async-stores/async-mission-store.js";
 export type { MissionStoreEvents, MissionSummary } from "./missions/mission-store.js";
 export { ACTIVE_GOAL_LIMIT, ActiveGoalLimitExceededError } from "./goals/goal-types.js";
 export type { Goal, GoalCreateInput, GoalListFilter, GoalStatus, GoalUpdateInput } from "./goals/goal-types.js";
diff --git a/packages/core/src/index.ts b/packages/core/src/index.ts
index af47bf806a..aa9327b9af 100644
--- a/packages/core/src/index.ts
+++ b/packages/core/src/index.ts
@@ -1816,6 +1816,9 @@ export type {
   MissionTransitionActorType,
   MissionTransitionActor,
   MissionUpdateOptions,
+  MissionBlockerSource,
+  MissionBlockerDescriptor,
+  MissionBlockedDiagnostics,
   AutopilotStatus,
   Mission,
   MissionBranchStrategy,
@@ -1865,7 +1868,7 @@ export type {
 } from "./missions/mission-types.js";
 export { MissionStore } from "./missions/mission-store.js";
 export type { MissionStoreEvents, MissionSummary } from "./missions/mission-store.js";
-export { AsyncMissionStore, MissionRemediationStoppedError, MissionResumeConflictError, RepairGroundTruthStaleError, RepairNotEligibleError, RepairValidatorRunInFlightError, RepairAssertionsMissingError, TerminalTaskReconciliationError } from "./async-stores/async-mission-store.js";
+export { AsyncMissionStore, MissionRemediationStoppedError, MissionResumeConflictError, MissionBlockedClearConflictError, RepairGroundTruthStaleError, RepairNotEligibleError, RepairValidatorRunInFlightError, RepairAssertionsMissingError, TerminalTaskReconciliationError } from "./async-stores/async-mission-store.js";
 export type { TerminalTaskReconciliationErrorCode } from "./async-stores/async-mission-store.js";
 export { AsyncIdeationStore } from "./async-stores/async-ideation-store.js";
 export { IDEATION_SESSION_STATUSES, IDEATION_CANDIDATE_ORIGINS } from "./ideation/ideation-types.js";
diff --git a/packages/core/src/missions/mission-types.ts b/packages/core/src/missions/mission-types.ts
index d134547954..4073e0d36e 100644
--- a/packages/core/src/missions/mission-types.ts
+++ b/packages/core/src/missions/mission-types.ts
@@ -18,6 +18,68 @@ import { redactSecrets } from "../secrets/redact-secrets.js";
 export const MISSION_STATUSES = ["planning", "active", "blocked", "complete", "archived"] as const;
 export type MissionStatus = (typeof MISSION_STATUSES)[number];
 
+/** The persisted source that prevents a mission from resuming automatically. */
+export type MissionBlockerSource = "feature-stop" | "lineage-stop" | "unspecified";
+
+/** Canonical, display-safe explanation for a mission-level blocked status. */
+export interface MissionBlockerDescriptor {
+  featureId: string;
+  reason: string;
+  source: MissionBlockerSource;
+}
+
+export interface MissionBlockedDiagnostics {
+  missionId: string;
+  status: MissionStatus;
+  recomputedStatus: MissionStatus;
+  clearable: boolean;
+  resumable: boolean;
+  blockers: MissionBlockerDescriptor[];
+}
+
+/**
+ * FNXC:MissionBlockedRepair 2026-08-11-02:56:
+ * Diagnostics and the resume gate share this pure classifier so their answer to "why blocked"
+ * cannot drift. New surfaces consume its deduped descriptors, while resume retains its historical
+ * undeduplicated { id, reason } payload because that 409 response is an existing wire contract.
+ */
+export function classifyMissionResumeBlockers(input: {
+  rootFeatures: ReadonlyArray<Pick<MissionFeature, "id" | "implementationStopReason">>;
+  lineageStops: ReadonlyArray<{ rootFeatureId: string; reason: string }>;
+}): {
+  blockers: MissionBlockerDescriptor[];
+  resumeConflictBlockers: Array<{ id: string; reason: string }>;
+  clearableFeatureIds: string[];
+} {
+  const featureStops = input.rootFeatures
+    .filter((root) => root.implementationStopReason !== "operator-intervention")
+    .map((root) => ({ id: root.id, reason: root.implementationStopReason ?? "legacy-unknown-stop" }));
+  const lineageStops = input.lineageStops
+    .filter((stop) => stop.reason !== "operator-intervention")
+    .map((stop) => ({ id: stop.rootFeatureId, reason: stop.reason }));
+  // Preserve the legacy append-then-stable-sort algorithm exactly, including duplicates.
+  const resumeConflictBlockers = [...featureStops, ...lineageStops].sort((a, b) => a.id.localeCompare(b.id));
+  const descriptors = [
+    ...featureStops.map((stop) => ({ featureId: stop.id, reason: stop.reason, source: "feature-stop" as const })),
+    ...lineageStops.map((stop) => ({ featureId: stop.id, reason: stop.reason, source: "lineage-stop" as const })),
+  ];
+  const seen = new Set<string>();
+  const blockers = descriptors.filter((descriptor) => {
+    const key = `${descriptor.featureId}\u0000${descriptor.reason}`;
+    if (seen.has(key)) return false;
+    seen.add(key);
+    return true;
+  }).sort((a, b) => a.featureId.localeCompare(b.featureId) || a.source.localeCompare(b.source) || a.reason.localeCompare(b.reason));
+  return {
+    blockers,
+    resumeConflictBlockers,
+    clearableFeatureIds: [...new Set([
+      ...input.rootFeatures.filter((root) => root.implementationStopReason === "operator-intervention").map((root) => root.id),
+      ...input.rootFeatures.filter((root) => input.lineageStops.some((stop) => stop.rootFeatureId === root.id)).map((root) => root.id),
+    ])],
+  };
+}
+
 /** Status values for a Milestone within a mission */
 export const MILESTONE_STATUSES = ["planning", "active", "blocked", "complete"] as const;
 export type MilestoneStatus = (typeof MILESTONE_STATUSES)[number];
diff --git a/packages/dashboard/app/api/legacy.ts b/packages/dashboard/app/api/legacy.ts
index 56cef222c7..85e8c00e83 100644
--- a/packages/dashboard/app/api/legacy.ts
+++ b/packages/dashboard/app/api/legacy.ts
@@ -1072,6 +1072,9 @@ export {
   fetchMilestoneValidation,
   fetchMilestoneValidationTelemetry,
   fetchMission,
+  fetchMissionBlockedDiagnostics,
+  clearMissionBlockedStatus,
+  normalizeMissionBlockers,
   fetchMissionAutopilotStatus,
   fetchMissionEvents,
   fetchMissionHealth,
diff --git a/packages/dashboard/app/api/missions/missions.ts b/packages/dashboard/app/api/missions/missions.ts
index 203637809e..ac1edbb962 100644
--- a/packages/dashboard/app/api/missions/missions.ts
+++ b/packages/dashboard/app/api/missions/missions.ts
@@ -632,6 +632,35 @@ export function fetchValidationRun(runId: string, projectId?: string): Promise<M
   return api(withProjectId(`/missions/validation-runs/${encodeURIComponent(runId)}`, projectId));
 }
 
+export type MissionBlockerSource = "feature-stop" | "lineage-stop" | "unspecified";
+export interface MissionBlockerDescriptor { featureId: string; reason: string; source: MissionBlockerSource; }
+
+/** Normalize canonical diagnostics and the frozen legacy resume-conflict payload into one render shape. */
+export function normalizeMissionBlockers(input: unknown): MissionBlockerDescriptor[] {
+  if (!Array.isArray(input)) return [];
+  const descriptors = input.flatMap((entry): MissionBlockerDescriptor[] => {
+    if (!entry || typeof entry !== "object") return [];
+    const value = entry as Record<string, unknown>;
+    if (typeof value.featureId === "string" && typeof value.reason === "string" && (value.source === "feature-stop" || value.source === "lineage-stop" || value.source === "unspecified")) return [{ featureId: value.featureId, reason: value.reason, source: value.source }];
+    if (typeof value.id === "string" && typeof value.reason === "string") return [{ featureId: value.id, reason: value.reason, source: "unspecified" }];
+    return [];
+  });
+  const seen = new Set<string>();
+  return descriptors.filter((descriptor) => {
+    const key = `${descriptor.featureId}\u0000${descriptor.reason}`;
+    if (seen.has(key)) return false;
+    seen.add(key); return true;
+  }).sort((a, b) => a.featureId.localeCompare(b.featureId) || a.source.localeCompare(b.source) || a.reason.localeCompare(b.reason));
+}
+
+export function fetchMissionBlockedDiagnostics(missionId: string, projectId?: string): Promise<{ missionId: string; status: MissionStatus; recomputedStatus: MissionStatus; clearable: boolean; resumable: boolean; blockers: MissionBlockerDescriptor[] }> {
+  return api(withProjectId(`/missions/${encodeURIComponent(missionId)}/blocked-diagnostics`, projectId));
+}
+
+export function clearMissionBlockedStatus(missionId: string, options: { reason?: string } = {}, projectId?: string): Promise<{ mission: Mission; blockers: MissionBlockerDescriptor[] }> {
+  return api(withProjectId(`/missions/${encodeURIComponent(missionId)}/clear-blocked`, projectId), { method: "POST", body: JSON.stringify(options.reason ? { reason: options.reason } : {}) });
+}
+
 /** Pause a mission (sets status to "blocked", in-flight tasks continue) */
 export function pauseMission(missionId: string, projectId?: string): Promise<Mission> {
   return api<Mission>(withProjectId(`/missions/${encodeURIComponent(missionId)}/pause`, projectId), {
diff --git a/packages/dashboard/app/components/MissionManager.css b/packages/dashboard/app/components/MissionManager.css
index 207ce22aa8..15f777a387 100644
--- a/packages/dashboard/app/components/MissionManager.css
+++ b/packages/dashboard/app/components/MissionManager.css
@@ -2992,3 +2992,9 @@ Generated fix features can carry the same stale blocked state as ordinary rows.
 [data-theme="light"] .mission-manager__header {
   background: color-mix(in srgb, var(--surface) 80%, transparent);
 }
+
+/* FNXC:MissionBlockedRepair 2026-08-11-02:56: Keep stale-badge diagnostics adjacent to existing run controls without creating a parallel button system. */
+.mission-blocked-repair { display: grid; gap: var(--space-2); color: var(--text-muted); }
+.mission-blocked-repair ul { margin: 0; padding-inline-start: var(--space-4); }
+.mission-blocked-repair .input { max-inline-size: 100%; }
+@media (max-width: 768px) { .mission-manager__body--stacked .mission-blocked-repair { inline-size: 100%; } }
diff --git a/packages/dashboard/app/components/MissionManager.tsx b/packages/dashboard/app/components/MissionManager.tsx
index 0a4183b6d2..853db9f884 100644
--- a/packages/dashboard/app/components/MissionManager.tsx
+++ b/packages/dashboard/app/components/MissionManager.tsx
@@ -8,6 +8,7 @@ import {
   getErrorMessage,
   type DriftAlignment,
   type Goal,
+  type MissionBlockerDescriptor,
 } from "@fusion/core";
 import {
   X,
@@ -86,6 +87,9 @@ import {
   previewEnrichedDescription,
   resumeMission,
   stopMission,
+  clearMissionBlockedStatus,
+  fetchMissionBlockedDiagnostics,
+  normalizeMissionBlockers,
   startMission,
   updateMissionAutopilot,
   fetchMissionsHealth,
@@ -241,6 +245,15 @@ function getInterviewStatusLabel(status: AiSessionSummary["status"], t: (key: st
   }
 }
 
+/**
+ * FNXC:MissionBlockedRepair 2026-08-11-02:56:
+ * Feature-validation repair intentionally does not change mission status. Both badge surfaces use
+ * this shared eligibility helper so a stale mission badge always has the same explicit repair path.
+ */
+export function getMissionBlockedRepairState(mission: Pick<Mission, "status">, blockers: MissionBlockerDescriptor[]): { showClear: boolean; blockers: MissionBlockerDescriptor[] } {
+  return { showClear: mission.status === "blocked", blockers: mission.status === "blocked" ? blockers : [] };
+}
+
 function getMissionRunHelperText(status: MissionStatus, t: (key: string, fallback: string) => string): string | null {
   switch (status) {
     case "planning":
@@ -248,7 +261,7 @@ function getMissionRunHelperText(status: MissionStatus, t: (key: string, fallbac
     case "active":
       return t("missions.runHelperActive", "Stopping pauses linked tasks and marks the mission blocked.");
     case "blocked":
-      return t("missions.runHelperBlocked", "Resuming re-activates the mission and continues execution.");
+      return t("missions.runHelperBlocked", "Resume re-activates execution; Clear blocked status repairs only a stale badge.");
     default:
       return null;
   }
@@ -1071,6 +1084,10 @@ export function MissionManager({ isOpen, isInline = false, onClose, addToast, pr
   const [validationRoundsExpanded, setValidationRoundsExpanded] = useState(true);
   const [validatingFeatures, setValidatingFeatures] = useState<Set<string>>(new Set());
   const [repairingValidationFeatures, setRepairingValidationFeatures] = useState<Set<string>>(new Set());
+  const [missionBlockers, setMissionBlockers] = useState<MissionBlockerDescriptor[]>([]);
+  const [missionBlockedDiagnosticsError, setMissionBlockedDiagnosticsError] = useState(false);
+  const [clearingBlockedMissionId, setClearingBlockedMissionId] = useState<string | null>(null);
+  const [missionBlockedReason, setMissionBlockedReason] = useState("");
 
   // Feature loop state
   const [featureLoopStates, setFeatureLoopStates] = useState<Map<string, MissionFeatureLoopSnapshot>>(new Map());
@@ -2681,6 +2698,35 @@ export function MissionManager({ isOpen, isInline = false, onClose, addToast, pr
     }
   }, [projectId]);
 
+  useEffect(() => {
+    if (!selectedMission || selectedMission.status !== "blocked") {
+      setMissionBlockers([]); setMissionBlockedDiagnosticsError(false); return;
+    }
+    let cancelled = false;
+    fetchMissionBlockedDiagnostics(selectedMission.id, projectId).then((diagnostics) => {
+      if (!cancelled) {
+        const blockers = diagnostics?.blockers;
+        // FNXC:MissionBlockedRepair 2026-08-11-03:15:
+        // A malformed diagnostics response must retain the clear control but identify its blocker
+        // explanation as unavailable instead of presenting an authoritative-looking empty list.
+        setMissionBlockers(normalizeMissionBlockers(blockers));
+        setMissionBlockedDiagnosticsError(!Array.isArray(blockers));
+      }
+    }).catch(() => { if (!cancelled) { setMissionBlockers([]); setMissionBlockedDiagnosticsError(true); } });
+    return () => { cancelled = true; };
+  }, [projectId, selectedMission?.id, selectedMission?.status]);
+
+  const handleClearMissionBlockedStatus = useCallback(async (missionId: string, reason?: string) => {
+    try {
+      setClearingBlockedMissionId(missionId);
+      const result = await clearMissionBlockedStatus(missionId, reason?.trim() ? { reason: reason.trim() } : {}, projectId);
+      setMissionBlockers(normalizeMissionBlockers(result.blockers));
+      addToast(result.blockers.length > 0 ? t("missions.blockedClearedStillGated", "Blocked status cleared; automation remains gated until Resume.") : t("missions.blockedCleared", "Blocked status cleared"), result.blockers.length > 0 ? "warning" : "success");
+      await loadMissionDetail(missionId); loadMissions();
+    } catch (err) { addToast(getErrorMessage(err) || t("missions.clearBlockedFailed", "Failed to clear blocked status"), "error"); }
+    finally { setClearingBlockedMissionId(null); }
+  }, [addToast, loadMissionDetail, loadMissions, projectId, t]);
+
   // Toggle feature expansion to show run history
   const toggleFeatureExpanded = useCallback(async (featureId: string) => {
     if (expandedFeatureId === featureId) {
@@ -2711,9 +2757,13 @@ export function MissionManager({ isOpen, isInline = false, onClose, addToast, pr
       await loadMissionDetail(missionId);
       loadMissions();
     } catch (err) {
-      addToast(getErrorMessage(err) || t("missions.resumeFailed", "Failed to resume mission"), "error");
+      if (err instanceof ApiRequestError && err.status === 409 && (err.details as { code?: string } | undefined)?.code === "MISSION_RESUME_CONFLICT") {
+        setMissionBlockers(normalizeMissionBlockers((err.details as { blockers?: unknown }).blockers));
+        setMissionBlockedDiagnosticsError(false);
+        addToast(t("missions.resumeBlocked", "Mission cannot resume until its recorded blockers are resolved."), "error");
+      } else addToast(getErrorMessage(err) || t("missions.resumeFailed", "Failed to resume mission"), "error");
     }
-  }, [addToast, loadMissionDetail, loadMissions, projectId]);
+  }, [addToast, loadMissionDetail, loadMissions, projectId, t]);
 
   // Stop mission — set status to "blocked" and pause all linked tasks
   const handleStopMission = useCallback(async (missionId: string) => {
@@ -3204,6 +3254,28 @@ export function MissionManager({ isOpen, isInline = false, onClose, addToast, pr
                         <span>{t("missions.resumeMission", "Resume mission")}</span>
                       </button>
                     )}
+                    {getMissionBlockedRepairState(selectedMission, missionBlockers).showClear && (
+                      <>
+                        {/* FNXC:MissionBlockedRepair 2026-08-11-02:56: This mission-level control is separate from feature validation repair because that repair never alters the durable mission badge. */}
+                        <button
+                          className="mission-btn mission-btn--ghost"
+                          onClick={() => handleClearMissionBlockedStatus(selectedMission.id, missionBlockedReason)}
+                          title={t("missions.clearBlockedStatus", "Clear blocked status")}
+                          aria-label={t("missions.clearBlockedStatus", "Clear blocked status")}
+                          disabled={clearingBlockedMissionId === selectedMission.id}
+                        >
+                          <Check size={14} />
+                          <span>{t("missions.clearBlockedStatus", "Clear blocked status")}</span>
+                        </button>
+                        <div className="mission-blocked-repair" aria-label={t("missions.whyBlocked", "Why blocked")}>
+                          <strong>{t("missions.whyBlocked", "Why blocked")}</strong>
+                          {missionBlockedDiagnosticsError ? <span>{t("missions.blockedDiagnosticsUnknown", "Blocker diagnostics are unavailable.")}</span> : missionBlockers.length === 0 ? <span>{t("missions.noRecordedBlockers", "No recorded blockers.")}</span> : (
+                            <ul>{missionBlockers.map((blocker) => <li key={`${blocker.featureId}\u0000${blocker.reason}`}>{blocker.featureId}: {blocker.reason}{blocker.source !== "unspecified" ? ` (${blocker.source})` : ""}</li>)}</ul>
+                          )}
+                          <input className="input" value={missionBlockedReason} onChange={(event) => setMissionBlockedReason(event.target.value)} placeholder={t("missions.clearBlockedReason", "Optional repair reason")} aria-label={t("missions.clearBlockedReason", "Optional repair reason")} />
+                        </div>
+                      </>
+                    )}
                     {selectedMission.status === "planning" && (
                       <button
                         className="mission-btn mission-btn--primary"
@@ -4979,6 +5051,18 @@ export function MissionManager({ isOpen, isInline = false, onClose, addToast, pr
                 <span>{t("missions.resumeMission", "Resume mission")}</span>
               </button>
             )}
+            {getMissionBlockedRepairState(m, []).showClear && (
+              <button
+                className="mission-btn mission-btn--ghost mission-btn--sm"
+                onClick={() => handleClearMissionBlockedStatus(m.id)}
+                title={t("missions.clearBlockedStatus", "Clear blocked status")}
+                aria-label={t("missions.clearBlockedStatus", "Clear blocked status")}
+                disabled={clearingBlockedMissionId === m.id}
+              >
+                <Check size={14} />
+                <span>{t("missions.clearBlockedStatus", "Clear blocked status")}</span>
+              </button>
+            )}
             {m.status === "planning" && (
               <button
                 className="mission-btn mission-btn--primary mission-btn--sm"
diff --git a/packages/dashboard/app/components/__tests__/MissionManager.blocked-repair.test.tsx b/packages/dashboard/app/components/__tests__/MissionManager.blocked-repair.test.tsx
new file mode 100644
index 0000000000..aa14ee9c70
--- /dev/null
+++ b/packages/dashboard/app/components/__tests__/MissionManager.blocked-repair.test.tsx
@@ -0,0 +1,106 @@
+import fs from "node:fs";
+import path from "node:path";
+import { beforeEach, describe, expect, it, vi } from "vitest";
+import { fireEvent, render, screen, waitFor } from "@testing-library/react";
+import { ApiRequestError } from "../../api/client/client";
+import { normalizeMissionBlockers } from "../../api/missions/missions";
+import { MissionManager } from "../MissionManager";
+
+const fetchMissions = vi.fn();
+const fetchMission = vi.fn();
+const fetchMissionsHealth = vi.fn();
+const fetchMissionBlockedDiagnostics = vi.fn();
+const clearMissionBlockedStatus = vi.fn();
+const resumeMission = vi.fn();
+
+vi.mock("../../hooks/useNavigationHistory", async (importOriginal) => ({
+  ...await importOriginal<typeof import("../../hooks/useNavigationHistory")>(),
+  useNavigationHistoryContext: () => ({ pushNav: vi.fn(), replaceCurrent: vi.fn() }),
+}));
+vi.mock("../../sse-bus", () => ({ subscribeSse: vi.fn(() => () => {}) }));
+vi.mock("../../api", async (importOriginal) => ({
+  ...await importOriginal<typeof import("../../api")>(),
+  fetchMissions: (...args: unknown[]) => fetchMissions(...args),
+  fetchMission: (...args: unknown[]) => fetchMission(...args),
+  fetchMissionsHealth: (...args: unknown[]) => fetchMissionsHealth(...args),
+  fetchMissionBlockedDiagnostics: (...args: unknown[]) => fetchMissionBlockedDiagnostics(...args),
+  clearMissionBlockedStatus: (...args: unknown[]) => clearMissionBlockedStatus(...args),
+  resumeMission: (...args: unknown[]) => resumeMission(...args),
+}));
+
+const blockedMission = {
+  id: "M-1", title: "Blocked mission", description: "", status: "blocked" as const,
+  interviewState: "completed", autoAdvance: false, autopilotEnabled: false, autopilotState: "inactive",
+  createdAt: "2026-08-11T00:00:00.000Z", updatedAt: "2026-08-11T00:00:00.000Z", milestones: [],
+};
+const blockedSummary = { ...blockedMission, summary: { totalMilestones: 0, totalFeatures: 0, completedMilestones: 0, completedFeatures: 0, progressPercent: 0 } };
+
+function renderBlocked() {
+  return render(<MissionManager isOpen isInline onClose={() => {}} addToast={() => {}} projectId="P-1" targetMissionId="M-1" />);
+}
+
+describe("MissionManager blocked repair", () => {
+  it("keeps linked-mission status in GoalsView read-only", () => {
+    const goalsView = fs.readFileSync(path.resolve(import.meta.dirname, "../GoalsView.tsx"), "utf8");
+    const linkedStatusRegion = goalsView.slice(goalsView.indexOf("goals-linked-mission-status"), goalsView.indexOf("goals-linked-mission-status") + 800);
+    expect(linkedStatusRegion).not.toContain("Clear blocked status");
+    expect(linkedStatusRegion).not.toContain("clearMissionBlockedStatus");
+  });
+
+  it("normalizes canonical, legacy, malformed, and duplicate blocker inputs", () => {
+    expect(normalizeMissionBlockers([{ featureId: "F-2", reason: "later", source: "lineage-stop" }, { id: "F-1", reason: "legacy" }, { id: "F-1", reason: "legacy" }, { nope: true }])).toEqual([
+      { featureId: "F-1", reason: "legacy", source: "unspecified" },
+      { featureId: "F-2", reason: "later", source: "lineage-stop" },
+    ]);
+    expect(normalizeMissionBlockers(undefined)).toEqual([]);
+    expect(normalizeMissionBlockers(null)).toEqual([]);
+    expect(normalizeMissionBlockers({ blockers: [] })).toEqual([]);
+  });
+
+  beforeEach(() => {
+    vi.clearAllMocks(); localStorage.clear();
+    fetchMissions.mockResolvedValue([blockedSummary]);
+    fetchMission.mockResolvedValue(blockedMission);
+    fetchMissionsHealth.mockResolvedValue({});
+    fetchMissionBlockedDiagnostics.mockResolvedValue({ blockers: [{ featureId: "F-1", reason: "budget-exhausted", source: "feature-stop" }] });
+    clearMissionBlockedStatus.mockResolvedValue({ mission: { ...blockedMission, status: "planning" }, blockers: [] });
+  });
+
+  it("renders the clear control on both owning blocked badge surfaces and refreshes it away", async () => {
+    renderBlocked();
+    await waitFor(() => expect(screen.getAllByRole("button", { name: "Clear blocked status" })).toHaveLength(2));
+    await waitFor(() => expect(screen.getByLabelText("Why blocked")).toHaveTextContent("F-1: budget-exhausted (feature-stop)"));
+    fetchMission.mockResolvedValueOnce({ ...blockedMission, status: "planning" });
+    fetchMissions.mockResolvedValueOnce([{ ...blockedSummary, status: "planning" }]);
+    fireEvent.click(screen.getAllByRole("button", { name: "Clear blocked status" })[0]);
+    await waitFor(() => expect(clearMissionBlockedStatus).toHaveBeenCalledWith("M-1", {}, "P-1"));
+    await waitFor(() => expect(screen.queryByRole("button", { name: "Clear blocked status" })).not.toBeInTheDocument());
+  });
+
+  it.each(["planning", "active", "complete", "archived"] as const)("does not render an orphan repair shell for %s", async (status) => {
+    fetchMissions.mockResolvedValue([{ ...blockedSummary, status }]);
+    fetchMission.mockResolvedValue({ ...blockedMission, status });
+    renderBlocked();
+    await waitFor(() => expect(fetchMission).toHaveBeenCalled());
+    expect(screen.queryByRole("button", { name: "Clear blocked status" })).not.toBeInTheDocument();
+    expect(screen.queryByLabelText("Why blocked")).not.toBeInTheDocument();
+  });
+
+  it("keeps clearing available when diagnostics fail or are malformed and normalizes duplicate resume conflicts", async () => {
+    fetchMissionBlockedDiagnostics.mockRejectedValueOnce(new Error("offline"));
+    renderBlocked();
+    await waitFor(() => expect(screen.getByText("Blocker diagnostics are unavailable.")).toBeInTheDocument());
+    expect(screen.getAllByRole("button", { name: "Clear blocked status" })).toHaveLength(2);
+    resumeMission.mockRejectedValueOnce(new ApiRequestError("conflict", 409, { code: "MISSION_RESUME_CONFLICT", blockers: [{ id: "F-1", reason: "budget-exhausted" }, { id: "F-1", reason: "budget-exhausted" }] }));
+    fireEvent.click(screen.getAllByRole("button", { name: "Resume mission" })[0]);
+    await waitFor(() => expect(screen.getByLabelText("Why blocked")).toHaveTextContent("F-1: budget-exhausted"));
+    expect(screen.getByLabelText("Why blocked")).not.toHaveTextContent("undefined");
+  });
+
+  it("treats a malformed diagnostics payload as unavailable while leaving clear operable", async () => {
+    fetchMissionBlockedDiagnostics.mockResolvedValueOnce({ blockers: { malformed: true } });
+    renderBlocked();
+    await waitFor(() => expect(screen.getByText("Blocker diagnostics are unavailable.")).toBeInTheDocument());
+    expect(screen.getAllByRole("button", { name: "Clear blocked status" })).toHaveLength(2);
+  });
+});
diff --git a/packages/dashboard/app/components/__tests__/MissionManager.mobile-css.test.ts b/packages/dashboard/app/components/__tests__/MissionManager.mobile-css.test.ts
index 2ad0a08ec8..357878f16b 100644
--- a/packages/dashboard/app/components/__tests__/MissionManager.mobile-css.test.ts
+++ b/packages/dashboard/app/components/__tests__/MissionManager.mobile-css.test.ts
@@ -252,3 +252,11 @@ describe("Mission view overscroll containment", () => {
     expect(eventsRule).toContain("-webkit-overflow-scrolling: touch;");
   });
 });
+
+describe("MissionManager blocked repair mobile styles", () => {
+  it("keeps the blocked diagnostics usable in stacked layout", () => {
+    const css = loadAllAppCss();
+    expect(css).toContain(".mission-manager__body--stacked .mission-blocked-repair");
+    expect(css).toContain("inline-size: 100%;");
+  });
+});
diff --git a/packages/dashboard/src/__tests__/mission-blocked-clear-routes.test.ts b/packages/dashboard/src/__tests__/mission-blocked-clear-routes.test.ts
new file mode 100644
index 0000000000..464ce8984b
--- /dev/null
+++ b/packages/dashboard/src/__tests__/mission-blocked-clear-routes.test.ts
@@ -0,0 +1,71 @@
+// @vitest-environment node
+import { beforeEach, describe, expect, it, vi } from "vitest";
+import express from "express";
+import { MissionBlockedClearConflictError, type TaskStore } from "@fusion/core";
+import { createMissionRouter } from "../mission-routes.js";
+import { request } from "../test-request.js";
+
+const mission = {
+  id: "M-1", title: "Blocked mission", status: "planning", interviewState: "completed",
+  autoAdvance: false, autopilotEnabled: false, autopilotState: "inactive",
+  createdAt: "2026-08-11T00:00:00.000Z", updatedAt: "2026-08-11T00:00:00.000Z",
+};
+const canonicalBlocker = { featureId: "F-1", reason: "budget-exhausted", source: "feature-stop" as const };
+
+function fixture() {
+  const missionStore = {
+    getMission: vi.fn(async (id: string) => id === mission.id ? mission : undefined),
+    getMissionBlockedDiagnostics: vi.fn(async (id: string) => {
+      if (id !== mission.id) throw new Error(`Mission ${id} not found`);
+      return { missionId: id, status: "blocked", recomputedStatus: "planning", clearable: true, resumable: false, blockers: [canonicalBlocker] };
+    }),
+    clearMissionBlockedStatus: vi.fn(async () => ({ mission, blockers: [canonicalBlocker] })),
+    resumeMission: vi.fn(async () => { throw new Error("unused"); }),
+    on: vi.fn(), off: vi.fn(),
+  };
+  const store = {
+    getMissionStore: () => missionStore,
+    getGoalStore: () => ({ getGoal: vi.fn(), listGoals: vi.fn() }),
+    getRootDir: () => "/tmp/mission-blocked-clear-routes",
+    getSettings: vi.fn(async () => ({})),
+    backendMode: true,
+  } as unknown as TaskStore;
+  const autopilot = { watchMission: vi.fn(), unwatchMission: vi.fn(), isWatching: vi.fn(), getAutopilotStatus: vi.fn(), checkAndStartMission: vi.fn(), recoverStaleMission: vi.fn(), start: vi.fn(), stop: vi.fn() };
+  const app = express();
+  app.use(express.json());
+  app.use("/api/missions", createMissionRouter(store, autopilot));
+  return { app, missionStore, autopilot };
+}
+
+describe("mission blocked-clear routes", () => {
+  let setup: ReturnType<typeof fixture>;
+  beforeEach(() => { setup = fixture(); });
+
+  it("clears with the dashboard actor and never re-arms autopilot", async () => {
+    const response = await request(setup.app, "POST", "/api/missions/M-1/clear-blocked", JSON.stringify({ reason: "stale badge" }), { "content-type": "application/json" });
+    expect(response.status).toBe(200);
+    expect(response.body).toMatchObject({ mission, blockers: [canonicalBlocker] });
+    expect(setup.missionStore.clearMissionBlockedStatus).toHaveBeenCalledWith("M-1", expect.objectContaining({ reason: "stale badge", actor: expect.objectContaining({ type: "operator", id: "dashboard" }) }));
+    expect(setup.autopilot.watchMission).not.toHaveBeenCalled();
+    expect(setup.autopilot.recoverStaleMission).not.toHaveBeenCalled();
+  });
+
+  it("maps missing, malformed, and non-blocked clear requests without a blocker payload", async () => {
+    const missing = await request(setup.app, "POST", "/api/missions/M-404/clear-blocked", undefined, { "content-type": "application/json" });
+    expect(missing.status).toBe(404);
+    const malformed = await request(setup.app, "POST", "/api/missions/not-a-mission/clear-blocked");
+    expect(malformed.status).toBe(400);
+    setup.missionStore.clearMissionBlockedStatus.mockRejectedValueOnce(new MissionBlockedClearConflictError("active"));
+    const conflict = await request(setup.app, "POST", "/api/missions/M-1/clear-blocked");
+    expect(conflict.status).toBe(409);
+    expect(conflict.body).toMatchObject({ details: { code: "MISSION_NOT_BLOCKED", status: "active" } });
+    expect((conflict.body as { details: Record<string, unknown> }).details).not.toHaveProperty("blockers");
+  });
+
+  it("returns diagnostics verbatim without writes", async () => {
+    const response = await request(setup.app, "GET", "/api/missions/M-1/blocked-diagnostics");
+    expect(response.status).toBe(200);
+    expect(response.body).toMatchObject({ blockers: [canonicalBlocker] });
+    expect(setup.missionStore.clearMissionBlockedStatus).not.toHaveBeenCalled();
+  });
+});
diff --git a/packages/dashboard/src/mission-routes.ts b/packages/dashboard/src/mission-routes.ts
index 41e2a0fd24..9e2f425947 100644
--- a/packages/dashboard/src/mission-routes.ts
+++ b/packages/dashboard/src/mission-routes.ts
@@ -20,6 +20,7 @@ import {
   resolvePlanningSettingsModel,
   THINKING_LEVELS,
   MissionResumeConflictError,
+  MissionBlockedClearConflictError,
   TerminalTaskReconciliationError,
   featureValidationRepairEligibility,
   RepairGroundTruthStaleError,
@@ -476,6 +477,8 @@ export function createMissionRouter(
       return typeof value === "function" ? value.bind(target) : value;
     },
   });
+  // These PostgreSQL-only repair operations intentionally have no legacy synchronous-store twin.
+  const asyncMissionStore = missionStore as AsyncMissionStore;
 
   router.use(async (req, _res, next) => {
     try {
@@ -3090,6 +3093,52 @@ export function createMissionRouter(
 
   // ── Mission Pause/Stop/Resume Endpoints ─────────────────────────────────────
 
+  /**
+   * GET /api/missions/:missionId/blocked-diagnostics
+   * Returns the canonical blocker descriptors without changing mission state.
+   */
+  router.get(
+    "/:missionId/blocked-diagnostics",
+    catchTypedHandler(async (req, res) => {
+      const { missionId } = req.params;
+      if (!validateMissionId(missionId)) throw badRequest("Invalid mission ID format");
+      try {
+        res.json(await asyncMissionStore.getMissionBlockedDiagnostics(missionId));
+      } catch (error) {
+        if (error instanceof Error && error.message === `Mission ${missionId} not found`) throw notFound("Mission not found");
+        throw error;
+      }
+    }),
+  );
+
+  /**
+   * FNXC:MissionBlockedRepair 2026-08-11-02:56:
+   * This clear route repairs a stale badge only. Unlike resume it deliberately does not watch the
+   * mission, recover stale work, unpause tasks, or alter lineage stops.
+   */
+  router.post(
+    "/:missionId/clear-blocked",
+    catchTypedHandler(async (req, res) => {
+      const { missionId } = req.params;
+      if (!validateMissionId(missionId)) throw badRequest("Invalid mission ID format");
+      const reason = validateDescription(req.body?.reason);
+      // FNXC:MissionBlockedRepair 2026-08-11-03:15:
+      // Check existence before the mutation so an unknown id is consistently a 404 even when a
+      // store implementation cannot distinguish a missing row from another clear precondition.
+      if (!await missionStore.getMission(missionId)) throw notFound("Mission not found");
+      try {
+        const result = await asyncMissionStore.clearMissionBlockedStatus(missionId, { actor: DASHBOARD_MISSION_ACTOR, reason });
+        res.json(result);
+      } catch (error) {
+        if (error instanceof MissionBlockedClearConflictError) {
+          throw conflict("Mission is not blocked", { code: "MISSION_NOT_BLOCKED", status: error.status });
+        }
+        if (error instanceof Error && error.message === `Mission ${missionId} not found`) throw notFound("Mission not found");
+        throw error;
+      }
+    }),
+  );
+
   /**
    * POST /api/missions/:missionId/pause
    * Pause a mission by setting status to "blocked".