feat(corpus-viz): hover tooltips + all-dots collab view + copy de-slop

PLN review pass:
- tooltip layer: hover any mark for the tracks/examples behind it. cloud dots
  (track + bpm + date), tempo line dots (median + what it means), histogram
  bands, gig/sample columns, family segments (count + % + example members),
  idiom bars (plain-language gloss of each phrase), staple bars, collab dots
- collab story now plots EVERY track as a dot; tracks at the same BPM pile into
  one larger dot (radius ~ count); median drawn as a tick; sample-tell chips get
  lift tooltips. needs tide_eda collab_fingerprint to emit per-track {name,bpm}
- copy: removed cheap 'not X, Y' contrasts + em dashes per impeccable clarify;
  added 'hover anything' affordance hints

armada/tide-table/eda_report.json

@@ -932,6 +932,16 @@
    "bpm_median": 150,
    "bpm_min": 140.0,
    "bpm_max": 160.0,
+   "tracks": [
+    {
+     "name": "Blue Gold",
+     "bpm": 140.0
+    },
+    {
+     "name": "Ghosts in the T01l3ts",
+     "bpm": 160.0
+    }
+   ],
    "distinctive_samples": [
     {
      "sound": "moog",
@@ -950,14 +960,24 @@
    "bpm_median": 131,
    "bpm_min": 120.0,
    "bpm_max": 142.0,
+   "tracks": [
+    {
+     "name": "Love First",
+     "bpm": 120.0
+    },
+    {
+     "name": "So Good",
+     "bpm": 142.0
+    }
+   ],
    "distinctive_samples": [
     {
-     "sound": "risers",
+     "sound": "moogBass",
      "lift": 4.6,
      "n": 2
     },
     {
-     "sound": "moogBass",
+     "sound": "risers",
      "lift": 4.6,
      "n": 2
     },
@@ -973,6 +993,56 @@
    "bpm_median": 138,
    "bpm_min": 102.0,
    "bpm_max": 170.0,
+   "tracks": [
+    {
+     "name": "Long Way",
+     "bpm": 102.0
+    },
+    {
+     "name": "Des Efforts",
+     "bpm": 120.0
+    },
+    {
+     "name": "Piment Bresilien",
+     "bpm": 124.0
+    },
+    {
+     "name": "Biscuit Acide",
+     "bpm": 128.0
+    },
+    {
+     "name": "Desire",
+     "bpm": 129.0
+    },
+    {
+     "name": "Acidule",
+     "bpm": 135.0
+    },
+    {
+     "name": "Esperluette",
+     "bpm": 140.0
+    },
+    {
+     "name": "Jeudi Drill",
+     "bpm": 140.0
+    },
+    {
+     "name": "Permanence",
+     "bpm": 150.0
+    },
+    {
+     "name": "Nouveau Punk",
+     "bpm": 155.0
+    },
+    {
+     "name": "Aria Sans Serif",
+     "bpm": 160.0
+    },
+    {
+     "name": "PunkAChien",
+     "bpm": 170.0
+    }
+   ],
    "distinctive_samples": [
     {
      "sound": "clubkick",
@@ -1011,6 +1081,188 @@
    "bpm_median": 117,
    "bpm_min": 80.0,
    "bpm_max": 165.0,
+   "tracks": [
+    {
+     "name": "Sessions Break",
+     "bpm": 80.0
+    },
+    {
+     "name": "Green Land",
+     "bpm": 80.0
+    },
+    {
+     "name": "Paris",
+     "bpm": 80.0
+    },
+    {
+     "name": "'Plosive",
+     "bpm": 80.0
+    },
+    {
+     "name": "Premiere Grillade",
+     "bpm": 80.0
+    },
+    {
+     "name": "Reboot",
+     "bpm": 80.0
+    },
+    {
+     "name": "Venons Ensemble",
+     "bpm": 85.0
+    },
+    {
+     "name": "Contre visite",
+     "bpm": 90.0
+    },
+    {
+     "name": "Fabuleux",
+     "bpm": 93.0
+    },
+    {
+     "name": "L'Or Bleu",
+     "bpm": 94.0
+    },
+    {
+     "name": "Lendemain Divin",
+     "bpm": 95.0
+    },
+    {
+     "name": "Ton Numero",
+     "bpm": 99.0
+    },
+    {
+     "name": "CBOW",
+     "bpm": 100.0
+    },
+    {
+     "name": "Orage",
+     "bpm": 104.0
+    },
+    {
+     "name": "Empreinte du numerique",
+     "bpm": 110.0
+    },
+    {
+     "name": "It's About Time",
+     "bpm": 110.0
+    },
+    {
+     "name": "Lunar",
+     "bpm": 110.0
+    },
+    {
+     "name": "Solar",
+     "bpm": 110.0
+    },
+    {
+     "name": "Nouveau Soleil",
+     "bpm": 110.0
+    },
+    {
+     "name": "Ere de Jeu",
+     "bpm": 110.0
+    },
+    {
+     "name": "La Révolution Sera Samplée",
+     "bpm": 114.0
+    },
+    {
+     "name": "Invoque l'ete",
+     "bpm": 115.0
+    },
+    {
+     "name": "Oct4 Glitch Sauvages",
+     "bpm": 117.0
+    },
+    {
+     "name": "Quand on Décolle",
+     "bpm": 120.0
+    },
+    {
+     "name": "RAISE",
+     "bpm": 120.0
+    },
+    {
+     "name": "La fin de l'insouciance",
+     "bpm": 120.0
+    },
+    {
+     "name": "Michael",
+     "bpm": 120.0
+    },
+    {
+     "name": "Sunny Side Up",
+     "bpm": 120.0
+    },
+    {
+     "name": "Café Bouillant",
+     "bpm": 120.0
+    },
+    {
+     "name": "Café Glacé",
+     "bpm": 120.0
+    },
+    {
+     "name": "Salut Nu",
+     "bpm": 120.0
+    },
+    {
+     "name": "L'été à Mauerpark",
+     "bpm": 120.0
+    },
+    {
+     "name": "Take 5 Drops",
+     "bpm": 124.0
+    },
+    {
+     "name": "Force Motrice",
+     "bpm": 125.0
+    },
+    {
+     "name": "Café Tiède",
+     "bpm": 125.0
+    },
+    {
+     "name": "Bain électrique",
+     "bpm": 128.0
+    },
+    {
+     "name": "WAP",
+     "bpm": 133.0
+    },
+    {
+     "name": "Prestance",
+     "bpm": 134.0
+    },
+    {
+     "name": "Lady Perplexity",
+     "bpm": 138.0
+    },
+    {
+     "name": "You My Sunshine",
+     "bpm": 144.0
+    },
+    {
+     "name": "Nuit Agitée",
+     "bpm": 160.0
+    },
+    {
+     "name": "Alerte Verte",
+     "bpm": 160.0
+    },
+    {
+     "name": "Something about Drums",
+     "bpm": 160.0
+    },
+    {
+     "name": "VelociTeuf",
+     "bpm": 165.0
+    },
+    {
+     "name": "Break the Loop",
+     "bpm": 165.0
+    }
+   ],
    "distinctive_samples": [
     {
      "sound": "electro1",

armada/tide-table/tide_eda.py

@@ -181,6 +181,9 @@ def collab_fingerprint(T, tempo):
             "bpm_median": round(st.median(bpms)) if bpms else None,
             "bpm_min": min(bpms) if bpms else None,
             "bpm_max": max(bpms) if bpms else None,
+            "tracks": sorted(({"name": t["name"], "bpm": tempo[t["track"]]["bpm"]}
+                              for t in tracks if t["track"] in tempo),
+                             key=lambda x: x["bpm"]),
             "distinctive_samples": [{"sound": s, "lift": round(l, 1), "n": c}
                                     for s, l, c in distinctive],
         }