feat(tide-table): Hall of Fame showcase viz — tierlist.html (#11)

The Foundry Hall of Fame, built through /impeccable in the Ship's Bridge language
(armada/DESIGN.md): dark instrument surface, Geist + Geist-Mono, brand magenta
reserved for the one earned accent (here the S-tier champions, the brand eyebrow,
and the now-playing pulse). Register = product: quiet, instrument-grade, the ear
leads and the screen serves.

What it shows:
- A classic S→D tier board. Tier is encoded redundantly (letter badge + lane
  position + colour), never hue alone — colour-blind safe by construction (DESIGN
  principle 4). Each kit is a chip: median grade, usage (tracks that play it),
  loop count, and a row of flag dots (seam/clip/off-grid/dc).
- Click a kit → a drawer of its loops, each with a grade bar, tier dot, and a
  PLAY button. The ear leads: every loop auditions in place (loop-on-repeat via a
  shared <audio>, _corpus/<kit>/<file>.wav over serve.py), with a now-playing
  footer. (DESIGN principle 2.)
- The rubric-validation callout, shown HONESTLY (principle 1, trust the
  instrument): grade↔usage ρ=+0.34, with a log-scale scatter that *labels its own
  confound* — risers and weird_dialogs sit low-right (used most, tier low) because
  they're FX, not loops. The footnote states the coverage caveat (34/97 kits carry
  a usage token) rather than implying full coverage.
- Search, filter (all/played/flagged), sort (grade/usage/name); skeleton load,
  empty states, focus-visible, keyboard audition, and prefers-reduced-motion
  fallbacks for every animation.

Verified in Chromium at 1280/390 widths via Playwright: no console errors, drawer +
audition + scatter all render, copy carries no em-dashes (impeccable ban). Audio
served through the local _corpus symlink (gitignored). Runs via
`python3 serve.py --dir tide-table --port 8731` → /tierlist.html.

armada/tide-table/.gitignore

@@ -2,3 +2,4 @@ dist/
 __pycache__/
 # machine-local audition symlink → Dirt-Samples (recreated by build_unwrapped.py)
 _samples
+_corpus

armada/tide-table/tierlist.json

 {
   "schema": "foundry tierlist v1",
-  "as_of": "",
+  "as_of": "2026-06-23",
   "samples_root": "/home/pln/Work/Sound/Samples",
   "grader": "tools/foundry/engine/grade.py",
   "n_kits": 97,