Add the free-weight canon and bodyweight staples (16 exercises)

Squat/lunge: Barbell Squat, Goblet Squat, Bodyweight Squat, Lunge.
Bench station: Bench Press, Incline Bench Press, Dumbbell Bench Press,
Dumbbell Fly (the fly authors the face-on camera for its frontal arc).
Dumbbell rack: Dumbbell Row, Dumbbell Shoulder Press, Dumbbell Curl,
Lateral Raise - first uses of the dumbbell prop. Bodyweight: Push-Up,
Pull-Up, Crunch, Dip.

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

Exercise Library/Pull-Up/info.md

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+# Pull-Up
+
+The vertical pull — from a dead hang, pull the chin over the bar and
+lower all the way back down.
+
+- **Category:** Main circuit
+- **Type:** Bodyweight vertical pull
+- **Targets:** Lats, biceps, mid-back, grip
+- **Prescription:** 3 × as many strict reps as possible
+
+## Setup
+
+Grip the bar just outside shoulder-width, palms away. Hang with straight
+arms, shoulders active (pulled slightly down), knees bent or legs long.
+
+## Execution
+
+1. Drive the elbows down toward the ribs to pull the body up.
+2. Chin clears the bar — chest toward it, not chin poking over.
+3. Lower with control to a full dead hang every rep.
+
+## Cues
+
+- Start every rep from straight arms; half hangs don't count.
+- Think "elbows to pockets", not "chin to bar".
+- Quiet body — no swinging or kicking.
+
+## Common Mistakes
+
+- Kipping and swinging for extra reps.
+- Stopping the descent halfway.
+- Shrugging the shoulders to the ears at the top.
+
+## Progression
+
+Use the assisted pull-up machine or a band until 5 strict reps come
+easily; then add reps, then hang weight from a belt.