Deleted the directory-walking CLAUDE.md/POC.md loader. Identity now
comes entirely from personality_nodes in the memory graph.
Simplified:
- assemble_context_message() takes just personality_nodes
- Removed config_file_count/memory_file_count tracking
- reload_for_model() → reload_context() (no longer model-specific)
Co-Authored-By: Kent Overstreet <kent.overstreet@linux.dev>
Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
