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

Exercise Library/TODO-coverage.md

@@ -1,132 +0,0 @@
-# Handoff: right-size the exercise library by functional coverage
-
-Repo: `~/Documents/indie/Workouts`. Read `Exercise Library/SYSTEM.md` first
-(motion format, props, visual language), then one machine motion
-(`Leg Press/motion.json`) and one bodyweight motion (`Bird Dog/motion.json`)
-as templates, one `info.md` (`Leg Press/info.md`) plus its parser
-(`Workouts/ExerciseFigure/ExerciseInfo.swift` — it parses a fixed shape, not
-general Markdown), and `render.py` (`--sheet`, `--strict`, `--orbit`,
-`--export`, `--fixtures`).
-
-## The question this session answers
-
-Not "how many exercises" but "which movement patterns can a user not log?"
-The picker (`ExercisePickerView`) lists exactly the bundled library names and
-there is no free-text fallback — the library is the app's **closed catalog**.
-A missing pattern is a hard wall, not a cosmetic gap. Build the coverage
-model, audit against it, then author the gap-fillers in priority order.
-
-## The coverage model (starting point — refine it, don't rubber-stamp it)
-
-Two axes, and the target list is their **union**:
-
-1. **Function — a movement-pattern × modality matrix.** Patterns: squat,
-   hinge, lunge, horizontal push, vertical push, horizontal pull, vertical
-   pull, elbow flexion, elbow extension, shoulder raise (lateral/rear), hip
-   ab/adduction, calf, core anti-extension, core rotation, core lateral,
-   core flexion, mobility/warm-up. Modalities: machine, free weight
-   (barbell/dumbbell), bodyweight/floor. A cell needs an exercise only if
-   real programs train that pattern that way.
-2. **Equipment — a gym-floor census.** Walk a typical commercial gym
-   (Planet Fitness / Golds tier): every common machine and free-weight
-   station should have at least one library entry, because users log by
-   station name, not by pattern — the matrix calls horizontal push "covered"
-   by Chest Press, but Bench Press, Dumbbell Bench Press, and Pec Deck are
-   distinct stations people expect to find in the picker. Inclusion test:
-   "found in most gyms," not "exists somewhere."
-
-The test for "done": a typical gym-goer — machine circuit, free-weight
-lifter, or home/bodyweight — can build their whole program from the picker
-without a missing pattern *or* a missing station. Write both filled tables
-into SYSTEM.md (or a COVERAGE.md beside it) so future additions are judged
-the same way.
-
-## What a rough audit already shows (verify, then prioritize)
-
-- **Hinge: zero coverage in any modality** — no Deadlift, Romanian Deadlift,
-  Glute Bridge, or Hip Thrust. The single biggest hole; glutes are basically
-  untrained by the current catalog.
-- **No lunge pattern** (Lunge / Split Squat).
-- **Bodyweight column missing its canon**: Squat, Push-Up, Pull-Up.
-- **Free-weight column completely empty** — zero barbell/dumbbell exercises.
-  The `dumbbell` prop type exists in both renderers but has never been used
-  by a motion; its first real use may shake out bugs.
-- **Shoulder raise**: no Lateral Raise (machine Shoulder Press only).
-- **Core flexion**: no plain Crunch (machine Abdominal only).
-- **Census gaps** — the current 14 machines are the standard selectorized
-  circuit (good coverage there), but common stations are absent: bench
-  press / incline bench (barbell + dumbbell), squat rack / Smith machine,
-  pec deck (+ rear-delt fly), the cable station's staples (triceps
-  pushdown, cable curl, cable crossover, face pull), assisted dip /
-  pull-up, hack squat, back extension (roman chair), hip thrust, and the
-  whole dumbbell rack (rows, shoulder press, flys, lateral raises, curls,
-  RDLs, lunges, goblet squat).
-- Memory notes a desired "morning wake-up" mobility set (Cat-Cow exists;
-  neck rolls, arm circles, etc.) — decide whether it's this session or the
-  next phase.
-
-The pattern matrix alone lands around 40–46 total (currently 22); the union
-with the gym-floor census pushes it to roughly 50–60. The tables decide
-which ones and in what order: hinge first, then the bench/rack/dumbbell
-free-weight canon and bodyweight staples, then the remaining stations
-(cables, pec deck, assisted machines), then isolation/mobility.
-
-## Authoring workflow, per exercise
-
-- New folder `<Name>/` with `motion.json` + `info.md`. The folder/`name`
-  string is user-facing (picker + run screen) — match the existing naming
-  register.
-- Pose keyframes in anatomical angles per SYSTEM.md; run
-  `python3 render.py --strict "<Name>"` (ROM violations are data bugs; a few
-  legacy warnings exist in old motions, add none), eyeball `preview.gif` AND
-  `orbit.gif` — every exercise orbits in-app now, so check ±45°/90°/180°,
-  not just the authored view.
-- Machines need props: scene slabs carry `z`/`depth` (see SYSTEM.md props
-  section), `bar`/`pad`/`roller`/`cable` ride joints. Free weights are
-  usually just a `bar` (with `plateR`) or `dumbbell` at the hands.
-- `info.md` must follow the parsed shape: `# Title`, summary paragraph,
-  the `**Category:** / **Type:** / **Targets:** / **Prescription:**` bullets,
-  then `## Setup / Execution / Cues / Common Mistakes / Progression`.
-  **Machine exercises' `Type:` must start "Machine-based"** — that prefix is
-  what shows the machine-settings UI (`ExerciseInfo.isMachineBased`).
-
-## Invariants — do not break
-
-- **Data-only expansion.** New exercises need zero Swift changes; if you find
-  yourself touching the schema or solver, stop and re-read SYSTEM.md — and
-  any schema change must land in `render.py`/`kinematics.py` and the Swift
-  port in lockstep, fixtures regenerated.
-- `WorkoutsTests/ExerciseMotionTests.swift` asserts
-  `fixtures.exercises.count == 22` — bump it to the new count and regenerate
-  with `python3 render.py --fixtures`. `allBundledMotionsBuildTimelines`
-  covers new motions automatically.
-- Starter splits and their fixed-ULID seeds are frozen — adding library
-  exercises must not touch `StarterSplits/` or `Workouts/Seed/`.
-- Every exercise ships both files: a motion with no `info.md` renders a blank
-  reference page in Settings → Library.
-
-## Verification workflow
-
-`python3 render.py --strict` (whole library) + `--sheet` and eyeball;
-`--orbit` for each new machine; `python3 render.py --export` then
-`python3 render.py --fixtures`; `xcodebuild test -scheme Workouts
--destination 'platform=iOS Simulator,name=iPhone 17 Pro'
--only-testing:WorkoutsTests` (48 green today; count assertion updated);
-`xcodebuild build -scheme "Workouts Watch App" -destination
-'generic/platform=watchOS Simulator'`. If test results ever contradict the
-source, suspect a stale incremental build — nuke DerivedData and rerun.
-One end-user CHANGELOG.md sentence per the app-changelog skill (e.g. the
-library doubles with deadlifts, lunges, push-ups, dumbbells…), README
-key-features line if it names library scope. Commit in reviewable batches
-(the coverage model + audit first, then exercises by pattern group), push,
-delete this file in the final commit.
-
-## Judgment calls you're empowered to make
-
-The final matrix rows and which cells count as "required"; where the census
-draws its "most gyms" line (kettlebells, T-bar row, pullover machine, and
-cardio equipment are likely out; Smith machine is borderline); whether the
-cable station gets one entry per exercise or per pattern; the exact
-exercise picks and their names; whether the mobility/"morning wake-up" set
-is in scope or explicitly deferred to the next phase; per-exercise camera
-yaw and prop minimalism (schematic silhouettes, never scale models).