Python repos were producing 0 CALLS edges for module-qualified constructor
calls like `models.User()` where `import models` is a bare module import.
Root causes:
1. `SupportedLanguages.Python` was absent from `WILDCARD_IMPORT_LANGUAGES`,
so `synthesizeWildcardImportBindings` never ran for Python files — bare
module imports never received per-symbol namedImportMap bindings.
2. Synthesis only ran in the Phase 14 pre-pass, after all chunks had already
been call-resolved. When `models.User()` was processed in Phase 3+4,
`namedImportMap` was empty for Python → Tier 2a-named fell through to
Tier 2a which found both `models.py:User` and `auth.py:User` (ambiguous).
3. `filterCallableCandidates` with `callForm='member'` excluded `Class` nodes
(only `CALLABLE_SYMBOL_TYPES` = Function/Method/Constructor/…). With 2
ambiguous Class candidates both were dropped, producing 0 CALLS edges.
Fixes:
- Add `SupportedLanguages.Python` to `WILDCARD_IMPORT_LANGUAGES` so that
`import models` expands to per-symbol namedImportMap entries (first-seen
semantics: `User→models.py:User`, `Admin→auth.py:Admin`).
- Call `synthesizeWildcardImportBindings` inline in the chunk loop, after
`processImportsFromExtracted` but BEFORE `processCallsFromExtracted`. This
ensures Tier 2a-named can disambiguate `module.ClassName()` at initial
call-resolution time. The Phase 14 pre-pass remains as a final safety net.
- Add a fallback in `resolveCallTarget`: if `callForm='member'` yields 0
filtered candidates, retry with `callForm='constructor'`. This handles the
case where a module-qualified class instantiation (e.g. `models.User()`)
is syntactically an attribute-access call but semantically a constructor
call. The fallback only triggers for 0-candidate member calls, so it
cannot over-eagerly promote normal member calls.
Tests: add `python-module-import` fixture (models.py/auth.py/app.py) with
4 regression tests covering IMPORTS edges, name-collision disambiguation
for `models.User()`, and `auth.Admin()`.
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
