Adapted from #1620 by @TheFedaikin, reworked onto v8 as a focused change
(without the module split or the references-fallback behavior change).
Builds on the shipped #1609 resolver: instead of bailing when a receiver's
class name is ambiguous corpus-wide, the declared type is resolved with a
shared CsharpNameResolver (same-namespace, using-directive, and alias aware)
against the caller's namespace/scope, falling back to the unique bare match
only when scoping is non-decisive. Adds base./this.field receivers and
inherited-member lookup through the inherits chain (an out-of-corpus base
poisons the lookup, so no wrong edge). The per-file type table now poisons a
name on any conflicting rebinding, killing the wrong-edge class where a local
shadows a field of a different type. C#-gated; never emits a wrong edge.
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
safishamsi
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