- system-embeddings (new skill): hashing-trick embeddings for memory-object
vectors. Works offline with no Ollama/API dependency. Falls back to
hashing-trick when no embedding backend is registered. Extensible —
set *embedding-backend* to use Ollama/OpenAI/any provider.
- programming-org: add org-subtree-extract and org-heading-list for
targeting specific headlines in Org text without loading whole files.
- core-context: add context-skill-subtree thin wrapper delegating to
org-subtree-extract. Core stays thin — parsing lives in the skill.
