fix: harden daemon and large-index recovery paths (#1562)

* fix: harden indexing recovery and daemon liveness

* test: cover daemon and recovery review gaps

* test: pin that a failure marker never blocks a later successful parse (#1557 retry-discard guard)

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>

---------

Co-authored-by: danusha2345 <ewidusoc498@gmail.com>
Co-authored-by: Colby McHenry <me@colbymchenry.com>
Co-authored-by: Claude Fable 5 <noreply@anthropic.com>

__tests__/parse-pool.test.ts

@@ -11,7 +11,7 @@
  * parallelism safe.
  */
 import { describe, it, expect } from 'vitest';
-import { ParseWorkerPool, resolveParsePoolSize, resolveParseTimeoutMs, type ParsePoolWorker, type ParseTask } from '../src/extraction/parse-pool';
+import { ParseWorkerPool, resolveParseBudgetMs, resolveParsePoolSize, resolveParseTimeoutMs, type ParsePoolWorker, type ParseTask } from '../src/extraction/parse-pool';
 import type { Language, ExtractionResult } from '../src/types';
 
 const sleep = (ms: number) => new Promise((r) => setTimeout(r, ms));
@@ -94,6 +94,17 @@ describe('resolveParseTimeoutMs', () => {
   });
 });
 
+describe('resolveParseBudgetMs', () => {
+  it('caps near-limit blob headers at a 20s soft / 60s hard window (#1555)', () => {
+    expect(resolveParseBudgetMs(10_000, 940_800)).toBe(20_000);
+    expect(resolveParseBudgetMs(10_000, 857_376)).toBe(20_000);
+  });
+
+  it('does not clamp an explicit larger base timeout', () => {
+    expect(resolveParseBudgetMs(45_000, 940_800)).toBe(45_000);
+  });
+});
+
 describe('resolveParsePoolSize', () => {
   it('treats explicit 0 and 1 as a single worker (the rollback path)', () => {
     expect(resolveParsePoolSize('0', 8)).toBe(1);