fix(skills/llama-cpp): concise description, restore python bindings, fix curl

- Description truncated to 60 chars in system prompt (extract_skill_description),
  so the 500-char HF workflow description never reached the agent; shortened to
  'llama.cpp local GGUF inference + HF Hub model discovery.' (56 chars).
- Restore llama-cpp-python section (basic, chat+stream, embeddings,
  Llama.from_pretrained) and frontmatter dependencies entry.
- Fix broken 'Authorization: Bearer ***' curl line (missing closing quote;
  llama-server doesn't require auth by default).

scripts/release.py

@@ -97,6 +97,7 @@ AUTHOR_MAP = {
     "mygamez@163.com": "zhongyueming1121",
     "hansnow@users.noreply.github.com": "hansnow",
     "134848055+UNLINEARITY@users.noreply.github.com": "UNLINEARITY",
+    "ben.burtenshaw@gmail.com": "burtenshaw",
     # contributors (manual mapping from git names)
     "ahmedsherif95@gmail.com": "asheriif",
     "liujinkun@bytedance.com": "liujinkun2025",