Two-hop re-exports and aliased imports are not followed

[Anandb71]

Measured

Fixture files: hard/reexport_base.py, hard/reexport_mid.py, hard/reexport_leaf.py, hard/aliased.py, hard/conditional.py.

original_function is defined once in reexport_base.py and reached four ways:

1. reexport_leaf.py imports it from reexport_mid.py (two hops)
2. aliased.py — from hard.reexport_base import original_function as renamed
3. aliased.py — import hard.reexport_base as base_mod, then base_mod.original_function(n)
4. conditional.py — imported inside a try/except ImportError

At engine v3.0.0:

original_function   1 caller     (truth: 4)

Why it matters

Re-export barrels (__init__.py, index.ts) and aliased imports are standard in Python and near-universal in TypeScript. Every edge through one is currently lost, which under-reports blast radius on exactly the packages most likely to be widely depended on.

Suggested fix

Follow an import whose target is itself an import (bounded, with cycle detection). Confirm the parser records the local name for as aliases — from x import y as z must key on z.

Reproduce

analyze-local /path/to/arbor-torture --top 25000 > out.txt
python grade.py out.txt   # check D