Contextual Completion — Implementation

Internal components of the contextual completion engine (Layer 7).

The contextual completion layer provides scope-aware, hierarchical code completion. These documents describe its constituent components: the engine that fuses draft and finalized queries, the lexical-scope context tree, the in-memory draft buffer, and the checkpoint stack that enables time-travel undo/redo. For consumer-facing scenarios, see the use-cases directory.

Components

Document	Purpose
completion-engine.md	ContextualCompletionEngine — fuses drafts with finalized terms and manages the context tree.
context-tree.md	ContextTree — the lexical-scope hierarchy and its visibility rules.
draft-buffer.md	DraftBuffer — in-memory storage of work-in-progress (unfinalized) terms.
checkpoint-system.md	CheckpointStack — checkpoint/restore for time-travel undo/redo of completion state.

Status: Living reference.

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