chore: update retrieval components

modules/story-summary/vector/retrieval/metrics.js

@@ -48,17 +48,15 @@ export function createMetrics() {
         // L3 Evidence Assembly
         l3: {
             floorsFromL0: 0,
-            // 候选规模（rerank 前）
+            l1Total: 0,
+            l1AfterCoarse: 0,
             chunksInRange: 0,
             chunksInRangeByType: { l0Virtual: 0, l1Real: 0 },
-            // 最终注入（rerank + sparse 后）
             chunksSelected: 0,
             chunksSelectedByType: { l0Virtual: 0, l1Real: 0 },
-            // 上下文配对
             contextPairsAdded: 0,
             tokens: 0,
             assemblyTime: 0,
-            // Rerank 相关
             rerankApplied: false,
             beforeRerank: 0,
             afterRerank: 0,
@@ -80,7 +78,6 @@ export function createMetrics() {
             breakdown: {
                 constraints: 0,
                 events: 0,
-                entities: 0,
                 chunks: 0,
                 recentOrphans: 0,
                 arcs: 0,
@@ -204,8 +201,15 @@ export function formatMetricsLog(metrics) {
     lines.push('[L3] Evidence Assembly');
     lines.push(`├─ floors_from_l0: ${m.l3.floorsFromL0}`);
 
-    // 候选规模
-    lines.push(`├─ chunks_in_range: ${m.l3.chunksInRange}`);
+    // L1 粗筛信息
+    if (m.l3.l1Total > 0) {
+        lines.push(`├─ l1_coarse_filter:`);
+        lines.push(`│   ├─ total: ${m.l3.l1Total}`);
+        lines.push(`│   ├─ after: ${m.l3.l1AfterCoarse}`);
+        lines.push(`│   └─ filtered: ${m.l3.l1Total - m.l3.l1AfterCoarse}`);
+    }
+
+    lines.push(`├─ chunks_merged: ${m.l3.chunksInRange}`);
     if (m.l3.chunksInRangeByType) {
         const cir = m.l3.chunksInRangeByType;
         lines.push(`│   ├─ l0_virtual: ${cir.l0Virtual || 0}`);
@@ -226,7 +230,6 @@ export function formatMetricsLog(metrics) {
         lines.push(`├─ rerank_applied: false`);
     }
 
-    // 最终注入规模
     lines.push(`├─ chunks_selected: ${m.l3.chunksSelected}`);
     if (m.l3.chunksSelectedByType) {
         const cs = m.l3.chunksSelectedByType;
@@ -341,6 +344,14 @@ export function detectIssues(metrics) {
         issues.push('L0 atoms not matched - may need to generate anchors');
     }
 
+    // L1 粗筛问题
+    if (m.l3.l1Total > 0 && m.l3.l1AfterCoarse > 0) {
+        const coarseFilterRatio = 1 - (m.l3.l1AfterCoarse / m.l3.l1Total);
+        if (coarseFilterRatio > 0.9) {
+            issues.push(`Very high L1 coarse filter ratio (${(coarseFilterRatio * 100).toFixed(0)}%) - query may be too specific`);
+        }
+    }
+
     // Rerank 相关问题
     if (m.l3.rerankApplied) {
         if (m.l3.beforeRerank > 0 && m.l3.afterRerank > 0) {
@@ -365,7 +376,7 @@ export function detectIssues(metrics) {
         }
     }
 
-    // 证据密度问题（基于 selected 的构成）
+    // 证据密度问题
     if (m.l3.chunksSelected > 0 && m.l3.chunksSelectedByType) {
         const l1Real = m.l3.chunksSelectedByType.l1Real || 0;
         const density = l1Real / m.l3.chunksSelected;