SmolDataEnvs-harbor-eval: remove null tool_efficiency from graders (#1)

Card: drop em dashes

Card: FineEnvs citation, install line for openenv[harbor]

Card: full banner on top

Card GIF: hill climb only, no banner band

README: the curves loop now carries the banner

README: light-theme curves, split train | eval, shuffled vs curriculum

README: quote the tagline, add the training-curve loop

SmolDataEnvs: rename, new README, banner

docs: link the Harbor Visualiser from the top of the card

tags: declare as an RL environment dataset

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Add files using upload-large-folder tool

Add files using upload-large-folder tool

Add files using upload-large-folder tool

Add files using upload-large-folder tool

Add files using upload-large-folder tool

Add files using upload-large-folder tool

initial commit