Add realworld_subset/ConservationofMomentum/InelasticCollision/11

Add realworld_subset/ConservationofMomentum/InelasticCollision/10

Add realworld_subset/ConservationofMomentum/InelasticCollision/1

Add realworld_subset/ConservationofMomentum/InelasticCollision/0

Add realworld_subset/Composition/9

Add sim_subset/at_rest_newbatch/7

Add sim_subset/at_rest_newbatch/2

Add sim_subset/at_rest_newbatch/3

Add realworld_subset/Composition/8

Add realworld_subset/Composition/7

Add sim_subset/at_rest_newbatch/4

Add realworld_subset/Composition/6

Add sim_subset/at_rest_newbatch/12

Add sim_subset/at_rest_newbatch/13

Add realworld_subset/Composition/5

Add realworld_subset/Composition/3

Add sim_subset/at_rest_newbatch/11

Add sim_subset/at_rest/8

Add sim_subset/at_rest/9

Add sim_subset/at_rest_newbatch/0

Add sim_subset/at_rest/7

Croissant: align wording — '10 physics tasks' (matches README + paper)

README: simplify wording — 10 physics tasks (compose composition)

Align README to paper: 400 cases (243 sim + 157 real)

Align case counts to paper: 243 sim + 157 real = 400 total

Add sim_subset/at_rest/6

Add sim_subset/at_rest/5

Add sim_subset/at_rest/4

Replace stub with full croissant.json (404 cases, full release wording)

Add sim_subset/at_rest/3

Add sim_subset/at_rest/2

Add sim_subset/at_rest/1

Add realworld_subset/Composition/5

Add realworld_subset/Composition/4

Add realworld_subset/Composition/3

Add realworld_subset/Composition/2

Add sim_subset/at_rest/0

Add realworld_subset/Composition/1

Add realworld_subset/Composition/0

Init: README + croissant.json (full 404-case)

initial commit