fix: scope framework surfaces to the selected app

[shaggitza]

Summary

• select exact app objects and bounded zero-argument factories for framework evidence
• exclude mounted/unused/rebound app lifecycle evidence and preserve include-router copy ordering
• propagate late, nested, dynamic, and resolved-include uncertainty through bounded selected-app ancestors
• support FastAPI 0.100/current lifecycle differences without falsely established inventories

Validation

• 82 focused framework tests passed on FastAPI 0.100.0 and 0.139.0
• custom-surface/native-route suites, Ruff, strict mypy, and diff checks passed
• three independent review rounds; final verdict PASS with no blockers

Partial progress on #280; constructor handler lists, exception handlers, pure-ASGI middleware, BackgroundTask, and broader cross-module ordering remain follow-up scope.