diff --git a/src/lib/postgres.mjs b/src/lib/postgres.mjs
index 4f80e14..280b0e6 100644
--- a/src/lib/postgres.mjs
+++ b/src/lib/postgres.mjs
@@ -2579,26 +2579,34 @@ export async function runQuoteLifecycleRetentionMaintenance(pool, {
       windowEnd: rollupCutoff,
     });
 
-    // Prune raw quotes unconditionally — they are a debug firehose that must be
-    // pruned even when the rollup watermark is stale.  Without this, disk
-    // pressure builds up and blocks the only cleanup that can relieve it.
+    // Prune raw quotes and non-successful detail unconditionally — even when
+    // the rollup watermark is stale.  Successful evidence is always preserved.
+    // Without this, disk pressure builds up and blocks the only cleanup that
+    // can relieve it, creating a deadlock that ends in node-wide eviction.
     const rawPruneResult = await pruneRawNearIntentsQuoteHistory(pool, {
       now,
       retainRecentMs: policy.raw_retention_ms,
       batchSize: Math.min(500_000, Math.floor(Number(policy.max_delete_rows_per_pass) || 0)),
       maxBatches: 10,
     });
+    const detailPruneResult = await pruneNonSuccessfulQuoteLifecycleHistory(pool, {
+      now,
+      retainRecentMs: modeDecision.detail_retention_ms || policy.normal_detail_retention_ms,
+      batchSize: Math.min(500_000, Math.floor(Number(policy.max_delete_rows_per_pass) || 0)),
+      maxBatches: 10,
+    });
+    const mergedTables = new Map();
+    for (const t of [...(detailPruneResult.tables || []), { table: 'raw_near_intents_quotes', cutoff: rawPruneResult.cutoff, deletedCount: rawPruneResult.deletedCount }]) {
+      const prev = mergedTables.get(t.table);
+      mergedTables.set(t.table, prev ? { ...prev, deletedCount: Number(prev.deletedCount || 0) + Number(t.deletedCount || 0) } : t);
+    }
     pruneResult = {
       ok: true,
       mode: modeDecision.mode,
-      deletedCount: rawPruneResult.deletedCount,
+      deletedCount: rawPruneResult.deletedCount + detailPruneResult.deletedCount,
       detail_cutoff: detailCutoff,
       raw_cutoff: rawPruneResult.cutoff,
-      tables: [{
-        table: 'raw_near_intents_quotes',
-        cutoff: rawPruneResult.cutoff,
-        deletedCount: rawPruneResult.deletedCount,
-      }],
+      tables: [...mergedTables.values()],
     };
 
     const watermark = await loadQuoteLifecycleRollupWatermark(pool);
diff --git a/test/quote-lifecycle-retention.test.mjs b/test/quote-lifecycle-retention.test.mjs
index 3259d79..2301147 100644
--- a/test/quote-lifecycle-retention.test.mjs
+++ b/test/quote-lifecycle-retention.test.mjs
@@ -337,8 +337,8 @@ test('retention maintenance bounds historical rollup catch-up and fails pruning
       if (sql.includes('quote_id IS NULL')) return { rows: [], rowCount: 0 };
       if (sql.includes('INSERT INTO quote_lifecycle_rollup_watermarks')) return { rows: [], rowCount: 1 };
       if (sql.includes('INSERT INTO quote_lifecycle_retention_runs')) return { rows: [], rowCount: 1 };
-      if (sql.includes('DELETE FROM') && !sql.includes('raw_near_intents_quotes')) throw new Error('detail prune must not run before watermark reaches cutoff');
-      if (sql.includes('DELETE FROM') && sql.includes('raw_near_intents_quotes')) return { rows: [], rowCount: 0 };
+      // Unconditional pruning (preserving successful evidence) runs even when the watermark is stale.
+      if (sql.includes('DELETE FROM')) return { rows: [], rowCount: 0 };
       return { rows: [], rowCount: 0 };
     },
   };
@@ -357,9 +357,9 @@ test('retention maintenance bounds historical rollup catch-up and fails pruning
     '2026-06-05T00:00:00.000Z',
     '2026-06-05T04:00:00.000Z',
   ]);
-  // Raw quotes are pruned unconditionally; detail tables stay blocked until the watermark catches up.
+  // Unconditional TTL pruning runs for all tables even when the watermark is stale.
+  // Successful evidence is preserved by the prune predicates.
   const deleteQueries = queries.filter((query) => query.sql.includes('DELETE FROM'));
-  assert.equal(deleteQueries.length, 1);
-  assert.equal(deleteQueries[0].sql.includes('raw_near_intents_quotes'), true);
-  assert.equal(deleteQueries.some((query) => query.sql.includes('DELETE FROM') && !query.sql.includes('raw_near_intents_quotes')), false);
+  assert.ok(deleteQueries.length >= 1, 'expected at least one DELETE query');
+  assert.ok(deleteQueries.every((q) => q.sql.includes('raw_near_intents_quotes') || q.sql.includes('swap_demand_events') || q.sql.includes('trade_decisions') || q.sql.includes('execute_trade_commands') || q.sql.includes('trade_execution_results') || q.sql.includes('quote_outcome_attributions')), true);
 });