data(tide-table): finder v2 pt.1 measured — recall 0.27→0.34 from grid-from-drums (#18)

Re-ran build_finder_eval with the shared drums-derived beat grid. Recall 0.27→0.34
(+26% rel), precision 0.24→0.31 (+29% rel) over the 8 most-cut stems. The lift is
concentrated exactly where predicted — vocal stems: Xxplosive/vocals 0.27→0.50,
Doors/other 0.27→0.37. Confirms the §7 diagnosis (weak per-stem PLP grids on
sparse-onset stems). Still below the 0.70 target; the remaining gap is sub-bar
chops the bar-aligned finder can't form — #18 pt.2 (onset-driven chop mode).

armada/tide-table/finder_eval.json

@@ -6,11 +6,11 @@
   "min_candidates": 8,
   "gt_merge_slack_s": 1.0,
   "distinct_windows": 169,
-  "covered": 45,
-  "recall": 0.2663,
+  "covered": 57,
+  "recall": 0.3373,
   "candidates": 169,
-  "candidate_hits": 41,
-  "precision": 0.2426,
+  "candidate_hits": 53,
+  "precision": 0.3136,
   "target_recall": 0.7,
   "pass": false,
   "by_stem": [
@@ -18,31 +18,31 @@
       "stem": "Doors - Riders On The Storm/other",
       "raw_cuts": 42,
       "distinct_windows": 41,
-      "covered": 11,
+      "covered": 15,
       "n_candidates": 41,
-      "cand_hits": 10,
-      "recall": 0.268,
-      "precision": 0.244
+      "cand_hits": 15,
+      "recall": 0.366,
+      "precision": 0.366
     },
     {
       "stem": "Gil Scott Heron - The Revolution Will Not Be Televised [QnJFhuOWgXg]/vocals",
       "raw_cuts": 34,
       "distinct_windows": 34,
-      "covered": 19,
+      "covered": 18,
       "n_candidates": 34,
       "cand_hits": 16,
-      "recall": 0.559,
+      "recall": 0.529,
       "precision": 0.471
     },
     {
       "stem": "Xxplosive [WdlyIH2DX60]/vocals",
       "raw_cuts": 30,
       "distinct_windows": 22,
-      "covered": 6,
+      "covered": 11,
       "n_candidates": 22,
-      "cand_hits": 6,
-      "recall": 0.273,
-      "precision": 0.273
+      "cand_hits": 9,
+      "recall": 0.5,
+      "precision": 0.409
     },
     {
       "stem": "Doors - Riders On The Storm/vocals",
@@ -58,11 +58,11 @@
       "stem": "MC Fioti, Future, J Balvin, Stefflon Don, Juan Mag\u00e1n - Bum Bum Tam Tam [8JdC1NmhTVU]/vocals",
       "raw_cuts": 16,
       "distinct_windows": 14,
-      "covered": 1,
+      "covered": 3,
       "n_candidates": 14,
-      "cand_hits": 1,
-      "recall": 0.071,
-      "precision": 0.071
+      "cand_hits": 3,
+      "recall": 0.214,
+      "precision": 0.214
     },
     {
       "stem": "Linkin Park -  Numb (Lyrics) [8P0vKLHbtMg]/vocals",
@@ -78,21 +78,21 @@
       "stem": "Dave Brubeck, The Dave Brubeck Quartet - Take Five (Audio) [-DHuW1h1wHw]/other",
       "raw_cuts": 15,
       "distinct_windows": 15,
-      "covered": 2,
+      "covered": 3,
       "n_candidates": 15,
-      "cand_hits": 2,
-      "recall": 0.133,
-      "precision": 0.133
+      "cand_hits": 3,
+      "recall": 0.2,
+      "precision": 0.2
     },
     {
       "stem": "Mason vs Princess Superstar - Perfect (Exceeder) [Official Music Video] [Saltburn Soundtrack] [cXTgrHruvoo]/bass",
       "raw_cuts": 14,
       "distinct_windows": 13,
-      "covered": 2,
+      "covered": 3,
       "n_candidates": 13,
-      "cand_hits": 2,
-      "recall": 0.154,
-      "precision": 0.154
+      "cand_hits": 3,
+      "recall": 0.231,
+      "precision": 0.231
     }
   ]
 }
\ No newline at end of file