Module completion 

Completion (ADR-0091 Phase 6).

Trigger characters: ., @, :, (. The phase-6 model:

• After . on a receiver expression: fields and methods on the receiver’s type (when we have it from the AIR side-table).
• After @: intrinsic names from the gruel_intrinsics registry.
• Otherwise: locals in the enclosing function (from RIR’s Local sites — recovered via AST walk), plus every top-level item.

Structs

CompletionItem

Enums

CompletionKind

Functions

complete_at

Completion at the given byte position. trigger is Some('.') / Some('@') if the editor invoked us via a trigger character.