Fix graph resolution, coverage and query rendering

[andrew]

Graph queries could include unrelated edges, and call resolution could select targets from shadowed imports, test-only declarations or unrelated receiver owners. This fixes those bindings and limits rendered queries to the selected edges, preserving distinct call sites.

Go method nodes retain receiver ownership, package and test scopes stay separate, and conflicting declarations remain unresolved. Python follows source submodules and static re-exports; Ruby follows literal require_relative loads to singleton and module_function bodies. Files with identical Ruby load closures share constant and method indexes. These joins use supplied source and leave ambiguous or unsupported calls external.

Recovered syntax errors now emit file warnings and set Complete=false. Graph fingerprints include Go module identity and ordered Python source roots. Regression coverage enters through Build and the CLI across Go, Python and Ruby.

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