Adds gstack-decision-search --semantic (with --query): appends a 'Related from
memory' block from gbrain semantic search, scoped to the curated-memory source.
Pure enhancement, reliability-first: a new lib/gstack-decision-semantic.ts is the
ONLY decision module that touches gbrain and is imported lazily only on --semantic,
so the reliable file path never loads gbrain code. Every path degrades to the
reliable file results when gbrain is off, unconfigured, empty, or errors (never
throws, 10s timeout).
Built against the verified gbrain 0.42.x surface (text output [score] slug --
snippet, NOT JSON; curated-memory source resolved by worktree path, not a
gstack-brain-<user> id). Deterministic-contract tests only: parser units,
degrade-to-null when gbrain absent, and a fake-gbrain shim proving scope+search
end-to-end. find-contradictions deferred (no verifiable CLI surface yet + curated
memory not indexed).
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
Two bins mirroring gstack-learnings-* (D3A). log writes decide/--supersede/--redact/
--compact events + refreshes the bounded snapshot + enqueues for cross-machine sync;
search reads the O(active) snapshot, scope-filtered to current branch, newest-first,
--all to include superseded, --json for machines. Empty store returns silently
(no snapshot write on an empty read).
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
Garry Tan