feat(3.6.6): local/uncensored llama.cpp provider, clippy clean, CI (#40)

Version bump 3.6.5 -> 3.6.6.

Local & uncensored models
- New `llamacpp:` provider (llama-server, OpenAI-compatible, localhost:8080,
  no API key, CPU-only or GPU-offloaded). Override via LLAMACPP_BASE_URL;
  model name is the loaded gguf (pass-through). 15 -> 16 providers.
- README: local/uncensored highlight, provider table + key-less note, badges.

Quality
- clippy clean under `-D warnings`: clamp(), sort_by_key(Reverse), struct-literal
  init, too_many_arguments allows, scoped await_holding_lock on the REPL blocking
  fallback (guard intentionally held across run().await), plus clippy --fix set.

CI
- examples/github-actions/ci.yml: cargo build/test/clippy -D warnings for the
  neurosploit-rs workspace (template, kept out of .github/workflows).


Claude-Session: https://claude.ai/code/session_01QDses7zTSa9YF7pPRjphvh

Co-authored-by: Claude Fable 5 <noreply@anthropic.com>

neurosploit-rs/Cargo.lock

@@ -871,7 +871,7 @@ dependencies = [
 
 [[package]]
 name = "neurosploit"
-version = "3.6.5"
+version = "3.6.6"
 dependencies = [
  "anyhow",
  "clap",
@@ -888,7 +888,7 @@ dependencies = [
 
 [[package]]
 name = "neurosploit-harness"
-version = "3.6.5"
+version = "3.6.6"
 dependencies = [
  "anyhow",
  "futures",