Linker: give it Bash(poc-memory:*) tools so it can render nodes,
query neighbors, and search before creating. Adds search-before-create
discipline to reduce redundant node creation.
Organize: remove MERGE operation, make DELETE conservative (only true
duplicates or garbage). Add "Preserve diversity" rule — multiple nodes
on similar topics are features, not bugs. LINK is primary operation.
Co-Authored-By: Kent Overstreet <kent.overstreet@linux.dev>
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