fix(automation): stop dispatch on host resource failures

src/automation/autonomousRunner.infraError.test.ts

@@ -11,6 +11,7 @@ import type { TaskItem } from '../orchestration/decisionEngine.js';
 import type { AutonomousConfig } from './runnerTypes.js';
 import type { ITaskSource } from './taskSource.js';
 import { RETRY_RAMP_FROM_ATTEMPT } from './durableRunCoordinator.js';
+import { HostDiskGate } from '../support/hostHealth.js';
 
 // Regression for INT-2010: adapter CLI/infra failures (the worker/reviewer never
 // ran) must NOT drive a completable issue to durable STUCK. They get a backoff
@@ -42,14 +43,14 @@ const task = (): TaskItem => ({
   createdAt: Date.now(),
 });
 
-const result = (finalStatus: PipelineResult['finalStatus']): PipelineResult => ({
+const result = (finalStatus: PipelineResult['finalStatus'], error = 'codex CLI failed with code 1'): PipelineResult => ({
   success: false,
   sessionId: 'pipeline-1',
   iterations: 0,
   totalDuration: 5,
   finalStatus,
   stages: [],
-  workerResult: { success: false, summary: '', filesChanged: [], commands: [], output: '', error: 'codex CLI failed with code 1' },
+  workerResult: { success: false, summary: '', filesChanged: [], commands: [], output: '', error },
 });
 
 function mockTaskSource() {
@@ -107,6 +108,25 @@ describe('AutonomousRunner infra_error handling (INT-2010)', () => {
     expect(history.every((entry: { failureCause?: string }) => entry.failureCause === 'infra')).toBe(true);
   });
 
+  it('parks dispatch on ENOSPC without scheduling a retry', async () => {
+    const source = mockTaskSource();
+    runnerExecution.setTaskSource(source);
+    const runner = new AutonomousRunner(cfg());
+    const scheduler = (runner as unknown as { scheduler: TaskScheduler }).scheduler;
+    const errorLog = vi.spyOn(console, 'error').mockImplementation(() => {});
+
+    for (let attempt = 0; attempt < 2; attempt++) {
+      scheduler.startTask(task(), '/repo', async () => result('infra_error', 'tester: git exited with code 128: No space left on device'));
+      await new Promise((resolve) => setTimeout(resolve, 30));
+    }
+
+    expect((runner as unknown as { failedTaskRetryTimes: Map<string, number> }).failedTaskRetryTimes.has('ISSUE-1')).toBe(false);
+    expect(errorLog).toHaveBeenCalledWith(expect.stringContaining('stopped dispatch after a host resource failure'));
+    const gate = new HostDiskGate(() => []);
+    expect(gate.resourceFailure('No space left on device').notice).toBeDefined();
+    expect(gate.resourceFailure('No space left on device').notice).toBeUndefined();
+  });
+
   it('retries a pair-level stuck result with fresh outer context before requiring a human', async () => {
     const source = mockTaskSource();
     runnerExecution.setTaskSource(source);

src/automation/autonomousRunner.ts

@@ -70,7 +70,7 @@ import { SANDBOX_OUTCOME_UNKNOWN_PARK_REASON } from '../sandboxExecutor/protocol
 import { INFRA_CIRCUIT_PARK_REASON } from './infraFailureCircuit.js';
 import { listHeldIssueIds } from './execHold.js';
 import { inputFingerprint, mayRedispatch } from './dispatchFingerprint.js';
-import { HostDiskGate, dispatchWritePaths } from '../support/hostHealth.js';
+import { HostDiskGate, dispatchWritePaths, isHostResourceError } from '../support/hostHealth.js';
 import { VERIFIED_WORKER_BLOCKER_PARK_REASON } from '../agents/pairPipelineTypes.js';
 import { decideExplicitReadmission, OPERATOR_QUESTION_PARK_MARKER } from './explicitDispatchReadmission.js';
 import { broadcastEvent, type SwarmStats } from '../core/eventHub.js';
@@ -946,6 +946,13 @@ export class AutonomousRunner {
       // edited files) STUCK in production. (INT-2010)
       if (result.finalStatus === 'infra_error') {
         const detail = pickPipelineFailureDetail(result) || 'infra/CLI execution error';
+        if (isHostResourceError(detail)) {
+          const hold = this.diskGate.resourceFailure(detail);
+          console.error(`[Scheduler] ${taskCtx} stopped dispatch after a host resource failure: ${detail}`);
+          if (hold.notice) await reportToDiscord(`⚠️ ${hold.notice}`);
+          this.scheduleNextHeartbeat();
+          return;
+        }
         if (task.issueId) {
           // Fixed mid-range backoff — we intentionally don't bump failure counts,
           // so there's no attempt number to scale by.

src/support/hostHealth.ts

@@ -125,6 +125,16 @@ export class HostDiskGate {
     private readonly minFreeBytes: () => number = () => DEFAULT_MIN_FREE_BYTES,
   ) {}
 
+  /** Latch a host-resource failure into the same pause/one-notice path as a low-space reading. */
+  resourceFailure(detail: string): DispatchGateDecision {
+    const first = !this.low;
+    this.low = true;
+    const line = `Host resource failure: ${detail}`;
+    return first
+      ? { pause: true, line, notice: `Dispatch paused: ${line}. New work waits until host resources recover.` }
+      : { pause: true, line };
+  }
+
   /** Measure now and decide. A floor of zero or less switches the check off. */
   evaluate(): DispatchGateDecision {
     const floor = this.minFreeBytes();