Add deepcell types 2026-06-23 weights to registry

[rossbar]

Okay here's the replacement for #5 !

@xuefei-wang can you confirm that the hash for this set of weights is the right one (i.e. the listed hash matches the md5sum of the weights that should be uploaded)

[xuefei-wang]

Heads-up @rossbar — I pushed two commits directly onto this PR's branch (add-dct-2026-06-23), to keep this in sync with the deepcell-types package release. Summary of what changed and why:

1. Serve the vocab-bundled 2026 checkpoints; default to 2026-06-15

• 2026-06-15 → deepcell-types_2026-06-15_resmlp.pt (b819a7e0…) — paper headline
• 2026-06-23 → deepcell-types_2026-06-23_resmlp_ptft.pt (402e94c1…) — SSL/pretrain-finetune arm

The original deepcell-types_2026-06-23.pt (067f558b…) is the un-bundled file: it lacks the bundled ct2idx/canonical_channels, so the deepcell-types package's predict() vocab guard rejects it. The bundled repackages carry that vocab (weights byte-identical, verified) and pass the guard. These now match the deepcell-types package registry (xuefei-wang/deepcell-types#70).

2. Add comparison baselines (deepcell-types-baselines + download_deepcell_types_baseline()) for cellsighter / maps(+_stats.npz) / xgboost(+.remap.json), hashes matching the 2026-06-30 retrains (xuefei-wang/deepcell-types#74). Each baseline maps to a list of assets so companion files travel together. Nimbus is intentionally omitted — its weights are distributed upstream (angelolab/Nimbus-Inference) and shouldn't be re-hosted here.

3. Dropped the legacy 2025-06-09 (×2) entries — legacy CLIP checkpoints, incompatible with current deepcell-types code, and with no deepcell-types consumers (both the old and new packages fetch via their own _auth, not deepcell_auth). If you'd rather keep them archived in the manifest, easy to restore.

Merge/conflict: I also merged current main in to resolve the conflict from the torch-mesmer addition (#7) — kept all of your torch-mesmer changes and added download_deepcell_types_baseline to __all__ (this branch predated main introducing __all__, so the new function wouldn't otherwise have been re-exported).

⚠️ Before merge: the new md5s require uploading the exact files to users.deepcell.org at the manifest keys — bundled models b819a7e0/402e94c1, and baselines cellsighter c5a105fb, maps 1ad5e30c + stats 1f462d0c, xgboost 9e51cf1a + remap fba1b0e7.