Ship the 47-exercise library in-app: export, fixtures, tests, docs

render.py --export bundles the 25 new motion rigs and info pages;
figure-fixtures.json regenerated for all 47 (the Swift solver reproduces
every new motion, including negative-y pins and the new prop uses). The
fixture count assertion moves to 47, and the no-bundled-motion test now
uses Treadmill - a permanent COVERAGE.md exclusion - since Bench Press
exists. 48 tests green; watch target builds. Coverage handoff complete -
TODO-coverage.md retired.

Claude-Session: https://claude.ai/code/session_01HJDQQDA9QdP8zByg43H5v3

README.md

@@ -12,11 +12,14 @@ your own iCloud Drive.
   machine routines, plus an equipment-free **Bodyweight Core** circuit with its
   own warm-up) appear automatically on first launch; editing one makes it your
   own copy, and deleted starters can be restored from Settings.
-- **Exercise library** — a bundled library of exercises to populate your splits,
-  authored in `Exercise Library/` with per-exercise setup, cues, mistakes,
-  progressions, and an anatomically-rigged 3D stick-figure visual system — covering the
-  bodyweight core moves plus the full Planet Fitness–style machine circuit
-  (presses, rows, pulldowns, curls, leg and hip machines).
+- **Exercise library** — a bundled library of 47 exercises to populate your
+  splits, authored in `Exercise Library/` with per-exercise setup, cues,
+  mistakes, progressions, and an anatomically-rigged 3D stick-figure visual
+  system — covering every common movement pattern and gym station (see the
+  library's `COVERAGE.md`): the full machine circuit, the barbell and dumbbell
+  free-weight canon (deadlifts, squats, benches, rows, curls, raises), the
+  cable staples, and the bodyweight staples (push-ups, pull-ups, dips,
+  lunges, and the floor core set).
 - **Run a workout** — start a session from a split, then tap an exercise to run it
   as a paged flow: a **Ready?** lead-in, count-up work phases, count-down rests, and
   a **Finish** page — mirroring the Apple Watch. Swipe a row to mark it complete, or