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>

examples/github-actions/README.md

@@ -9,6 +9,7 @@ variables → Actions), or swap the `MODEL`/key for a provider you use. The buil
 |----------|--------------|
 | `neurosploit-pr-gate.yml` | Reviews every pull request and **blocks the merge** on a confirmed critical (fails the check + sets a `neurosploit/security` commit status + posts a REQUEST_CHANGES review). |
 | `neurosploit-mention.yml` | Comment **`@neurosploit`** on a PR/issue (writers only) to trigger a scan. Text after the mention steers it, in any language; a URL runs a black-box test, otherwise it reviews the PR. |
+| `ci.yml` | Rust CI for the `neurosploit-rs/` workspace — `cargo build` / `test` / `clippy -D warnings` on every push & PR. |
 
 ## Enforce the PR gate as a merge block