[lesnik512]

Importing lite_bootstrap previously loaded all five framework bootstrappers, including unrelated frameworks installed in the environment. Resolve framework and Pyroscope exports lazily through module __getattr__, cache resolved names, and retain TYPE_CHECKING imports and __all__. Exceptions remain eager. __dir__ keeps all public exports discoverable without loading frameworks.

Closes #403.

Import timings

Python 3.14.7, local all-extras environment. Median elapsed import time across seven fresh processes per statement, with -X importtime enabled and timing measured inside each process:

Import	Before	After
import lite_bootstrap	680.95 ms	12.91 ms
from lite_bootstrap import FastAPIBootstrapper	677.70 ms	273.73 ms
from lite_bootstrap import ConfigurationError	730.97 ms	13.02 ms
from lite_bootstrap import PyroscopeConfig	681.73 ms	90.14 ms

Validation

• Four subprocess isolation cases failed before the change and pass afterward.
• A subprocess discovery regression failed before adding __dir__ and now confirms all public exports appear without importing any framework or changing sys.modules.
• Every name in __all__ resolves in a fresh process; repeated access preserves identity and unknown names raise AttributeError.
• just test-ci: 618 passed, 100% coverage.
• just lint-ci: formatting, lint, and typechecking passed.
• Standards and spec reviews found no issues.