feat(provider-xai): xAI (Grok) provider for llm-router

.github/workflows/create-tag.yml

@@ -29,6 +29,7 @@ on:
           - pi
           - provider-anthropic
           - provider-openai
+          - provider-xai
           - rbac-proxy
           - session-manager
           - slack

.github/workflows/release.yml

@@ -23,6 +23,7 @@ on:
       - 'pi/v*'
       - 'provider-anthropic/v*'
       - 'provider-openai/v*'
+      - 'provider-xai/v*'
       - 'rbac-proxy/v*'
       - 'session-manager/v*'
       - 'slack/v*'

README.md

@@ -60,6 +60,7 @@ npx skills add iii-hq/iii --all
 | [`rbac-proxy`](rbac-proxy/) | Rust | RBAC boundary proxy for the iii worker protocol — opens its own port and reverse-proxies functions + channels to a trusted engine listener, authenticating each connection, gating every invocation and trigger binding, namespacing registrations, running middleware + registration hooks, and filtering the `engine::*` discovery results to the caller's boundaries. The [`console`](console/) reverse-proxy with the engine's RBAC vendored in front, out of process. |
 | [`provider-anthropic`](provider-anthropic/) | Rust | Anthropic Messages API provider behind `llm-router` — `provider::anthropic::stream` with prompt caching, thinking, and live model discovery. |
 | [`provider-openai`](provider-openai/) | Rust | OpenAI Chat Completions provider behind `llm-router` — `provider::openai::stream` with reasoning support and live chat-model discovery. |
+| [`provider-xai`](provider-xai/) | Rust | xAI (Grok) Chat Completions provider behind `llm-router` — `provider::xai::stream` with grok reasoning support and live model discovery against `api.x.ai`. |
 | [`shell`](shell/) | Rust | Unix shell + filesystem worker — `shell::exec` with allowlist/denylist/timeout/output caps and background jobs; `fs::ls`/`stat`/`mkdir`/`rm`/`chmod`/`mv`/`grep`/`sed`/`read`/`write` with host jail, denylist, and size caps. |
 | [`storage`](storage/) | Rust | S3-compatible object storage across AWS S3, GCS, Cloudflare R2, and a managed local rustfs backend. Streamed uploads, presigned URLs, and object change triggers. |
 

provider-xai/.gitignore

@@ -0,0 +1 @@
+/target