Exposes the full query language as a tool: filtering, sorting, field
selection, neighbor walks. Examples:
degree > 10 | sort weight | limit 5
neighbors('identity') | select strength
key ~ 'journal.*' | count
Also added query_to_string() in the parser so queries return strings
instead of printing to stdout. Updated memory-instructions-core to
list all current tools (added memory_query and journal, removed
CLI commands section and nonexistent memory_search_content).
Co-Authored-By: Proof of Concept <poc@bcachefs.org>
a865285313