feat: base without X_

[flying-sheep]

• Closes Don't prepend "X_" #3188
• Tests included or not required because:

• Release notes not necessary because:

[codecov]

❌ 1 Tests Failed:

Tests completed	Failed	Passed	Skipped
1867	1	1866	930

View the top 1 failed test(s) by shortest run time

tests/test_embedding.py::test_diffmap_key_added[v2]

Stack Traces | 0.039s run time

key_added = <Preset.ScanpyV2Preview: 'scanpy-v2-preview'>, key_obsm = 'diffmap'
key_uns = 'diffmap'

    #x1B[0m#x1B[37m@pytest#x1B[39;49;00m.mark.parametrize(#x1B[90m#x1B[39;49;00m
        (#x1B[33m"#x1B[39;49;00m#x1B[33mkey_added#x1B[39;49;00m#x1B[33m"#x1B[39;49;00m, #x1B[33m"#x1B[39;49;00m#x1B[33mkey_obsm#x1B[39;49;00m#x1B[33m"#x1B[39;49;00m, #x1B[33m"#x1B[39;49;00m#x1B[33mkey_uns#x1B[39;49;00m#x1B[33m"#x1B[39;49;00m),#x1B[90m#x1B[39;49;00m
        [#x1B[90m#x1B[39;49;00m
            pytest.param(#x1B[94mNone#x1B[39;49;00m, #x1B[33m"#x1B[39;49;00m#x1B[33mX_diffmap#x1B[39;49;00m#x1B[33m"#x1B[39;49;00m, #x1B[33m"#x1B[39;49;00m#x1B[33mdiffmap_evals#x1B[39;49;00m#x1B[33m"#x1B[39;49;00m, #x1B[96mid#x1B[39;49;00m=#x1B[33m"#x1B[39;49;00m#x1B[33mNone#x1B[39;49;00m#x1B[33m"#x1B[39;49;00m),#x1B[90m#x1B[39;49;00m
            pytest.param(#x1B[33m"#x1B[39;49;00m#x1B[33mcustom_key#x1B[39;49;00m#x1B[33m"#x1B[39;49;00m, #x1B[33m"#x1B[39;49;00m#x1B[33mcustom_key#x1B[39;49;00m#x1B[33m"#x1B[39;49;00m, #x1B[33m"#x1B[39;49;00m#x1B[33mcustom_key#x1B[39;49;00m#x1B[33m"#x1B[39;49;00m, #x1B[96mid#x1B[39;49;00m=#x1B[33m"#x1B[39;49;00m#x1B[33mcustom_key#x1B[39;49;00m#x1B[33m"#x1B[39;49;00m),#x1B[90m#x1B[39;49;00m
            pytest.param(sc.Preset.ScanpyV1, #x1B[33m"#x1B[39;49;00m#x1B[33mX_diffmap#x1B[39;49;00m#x1B[33m"#x1B[39;49;00m, #x1B[33m"#x1B[39;49;00m#x1B[33mdiffmap_evals#x1B[39;49;00m#x1B[33m"#x1B[39;49;00m, #x1B[96mid#x1B[39;49;00m=#x1B[33m"#x1B[39;49;00m#x1B[33mv1#x1B[39;49;00m#x1B[33m"#x1B[39;49;00m),#x1B[90m#x1B[39;49;00m
            pytest.param(sc.Preset.ScanpyV2Preview, #x1B[33m"#x1B[39;49;00m#x1B[33mdiffmap#x1B[39;49;00m#x1B[33m"#x1B[39;49;00m, #x1B[33m"#x1B[39;49;00m#x1B[33mdiffmap#x1B[39;49;00m#x1B[33m"#x1B[39;49;00m, #x1B[96mid#x1B[39;49;00m=#x1B[33m"#x1B[39;49;00m#x1B[33mv2#x1B[39;49;00m#x1B[33m"#x1B[39;49;00m),#x1B[90m#x1B[39;49;00m
        ],#x1B[90m#x1B[39;49;00m
    )#x1B[90m#x1B[39;49;00m
    #x1B[94mdef#x1B[39;49;00m#x1B[90m #x1B[39;49;00m#x1B[92mtest_diffmap_key_added#x1B[39;49;00m(#x1B[90m#x1B[39;49;00m
        key_added: #x1B[96mstr#x1B[39;49;00m | #x1B[94mNone#x1B[39;49;00m | Default | sc.Preset, key_obsm: #x1B[96mstr#x1B[39;49;00m, key_uns: #x1B[96mstr#x1B[39;49;00m#x1B[90m#x1B[39;49;00m
    ) -> #x1B[94mNone#x1B[39;49;00m:#x1B[90m#x1B[39;49;00m
        pbmc = pbmc68k_reduced()[:#x1B[94m300#x1B[39;49;00m, :#x1B[94m100#x1B[39;49;00m].copy()#x1B[90m#x1B[39;49;00m
        #x1B[94mif#x1B[39;49;00m #x1B[96misinstance#x1B[39;49;00m(key_added, sc.Preset):#x1B[90m#x1B[39;49;00m
>           sc.settings.preset = key_added#x1B[90m#x1B[39;49;00m
            ^^^^^^^^^^^^^^^^^^#x1B[90m#x1B[39;49;00m

#x1B[1m#x1B[31mtests/test_embedding.py#x1B[0m:129: 
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ 
#x1B[1m#x1B[31m../../../..../scanpy/B9PcT7QG/hatch-test.few-extras/lib/python3.14....../site-packages/pydantic/main.py#x1B[0m:1046: in __setattr__
    #x1B[0msetattr_handler(#x1B[96mself#x1B[39;49;00m, name, value)#x1B[90m#x1B[39;49;00m
#x1B[1m#x1B[31m../../../..../scanpy/B9PcT7QG/hatch-test.few-extras/lib/python3.14....../site-packages/pydantic/main.py#x1B[0m:112: in <lambda>
    #x1B[0m#x1B[33m'#x1B[39;49;00m#x1B[33mvalidate_assignment#x1B[39;49;00m#x1B[33m'#x1B[39;49;00m: #x1B[94mlambda#x1B[39;49;00m model, name, val: model.__pydantic_validator__.validate_assignment(model, name, val),  #x1B[90m# pyright: ignore[reportAssignmentType]#x1B[39;49;00m#x1B[90m#x1B[39;49;00m
                                                    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^#x1B[90m#x1B[39;49;00m
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ 

self = <Preset.ScanpyV2Preview: 'scanpy-v2-preview'>

    #x1B[0m#x1B[94mdef#x1B[39;49;00m#x1B[90m #x1B[39;49;00m#x1B[92mcheck#x1B[39;49;00m(#x1B[96mself#x1B[39;49;00m) -> Self:#x1B[90m#x1B[39;49;00m
    #x1B[90m    #x1B[39;49;00m#x1B[33m"""Check if requirements for preset are met."""#x1B[39;49;00m#x1B[90m#x1B[39;49;00m
        #x1B[94mmatch#x1B[39;49;00m #x1B[96mself#x1B[39;49;00m:#x1B[90m#x1B[39;49;00m
            #x1B[94mcase#x1B[39;49;00m #x1B[96mself#x1B[39;49;00m.ScanpyV2Preview:#x1B[90m#x1B[39;49;00m
                #x1B[94mif#x1B[39;49;00m #x1B[95mnot#x1B[39;49;00m (missing := _missing_scanpy2_deps()):#x1B[90m#x1B[39;49;00m
                    #x1B[94mreturn#x1B[39;49;00m #x1B[96mself#x1B[39;49;00m#x1B[90m#x1B[39;49;00m
                missing_str = #x1B[33m"#x1B[39;49;00m#x1B[33m, #x1B[39;49;00m#x1B[33m"#x1B[39;49;00m.join(#x1B[33mf#x1B[39;49;00m#x1B[33m"#x1B[39;49;00m#x1B[33m‘#x1B[39;49;00m#x1B[33m{#x1B[39;49;00mm.name#x1B[33m}#x1B[39;49;00m#x1B[33m’#x1B[39;49;00m#x1B[33m"#x1B[39;49;00m #x1B[94mfor#x1B[39;49;00m m #x1B[95min#x1B[39;49;00m missing)#x1B[90m#x1B[39;49;00m
                msg = (#x1B[90m#x1B[39;49;00m
                    #x1B[33mf#x1B[39;49;00m#x1B[33m"#x1B[39;49;00m#x1B[33mSetting preset to #x1B[39;49;00m#x1B[33m{#x1B[39;49;00mPreset.ScanpyV2Preview#x1B[33m!r}#x1B[39;49;00m#x1B[33m requires optional #x1B[39;49;00m#x1B[33m"#x1B[39;49;00m#x1B[90m#x1B[39;49;00m
                    #x1B[33mf#x1B[39;49;00m#x1B[33m"#x1B[39;49;00m#x1B[33mdependencies that are not installed: #x1B[39;49;00m#x1B[33m{#x1B[39;49;00mmissing_str#x1B[33m}#x1B[39;49;00m#x1B[33m. #x1B[39;49;00m#x1B[33m"#x1B[39;49;00m#x1B[90m#x1B[39;49;00m
                    #x1B[33m"#x1B[39;49;00m#x1B[33mInstall them with: pip install `scanpy[scanpy2]`#x1B[39;49;00m#x1B[33m"#x1B[39;49;00m#x1B[90m#x1B[39;49;00m
                )#x1B[90m#x1B[39;49;00m
>               #x1B[94mraise#x1B[39;49;00m #x1B[96mImportError#x1B[39;49;00m(msg)#x1B[90m#x1B[39;49;00m
#x1B[1m#x1B[31mE               ImportError: Setting preset to <Preset.ScanpyV2Preview: 'scanpy-v2-preview'> requires optional dependencies that are not installed: ‘igraph’, ‘scikit-misc’. Install them with: pip install `scanpy[scanpy2]`#x1B[0m

#x1B[1m#x1B[.../scanpy/_settings/presets.py#x1B[0m:286: ImportError

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