Investigate instrumenting Android App Functions

Android's App Functions API lets apps expose callable functions to system intelligence/assistants — conceptually the mobile analogue of MCP. Investigate whether Sentry should auto-instrument App Functions invocations (spans, breadcrumbs, error capture).

Start by reviewing Android's App Functions API and how invocations expose spans, breadcrumbs, and errors. Determine whether Sentry should auto-instrument those invocations, and document the feasible scope and expected behavior for each signal.

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