chore: pin chain-module-sdk v0.3.0 and switch to #[chain_module]

The pre-rename #[fai_module] attribute is gone in SDK 0.3.0; the
dependency is tag-pinned so an SDK push can no longer change what
this module builds against. Rebuilt artifact where tracked.

Signed-off-by: flemming-it <sf@flemming.it>

Cargo.toml

@@ -17,7 +17,7 @@ repository = "https://git.flemming.ws/chain-modules/orchestrator-llm"
 crate-type = ["cdylib", "rlib"]
 
 [dependencies]
-chain-module-sdk = { git = "https://git.flemming.ai/fai/chain-module-sdk-rust.git", branch = "main" }
+chain-module-sdk = { git = "https://git.flemming.ai/fai/chain-module-sdk-rust.git", tag = "v0.3.0" }
 serde = { version = "1", features = ["derive"] }
 serde_json = "1"
 thiserror = "2"

src/lib.rs

@@ -1,7 +1,7 @@
 //! orchestrator-llm — turns natural-language goals into Plan JSON.
 //!
 //! v0.3.0 migrates from a hand-written wit_bindgen scaffold to the
-//! `#[fai_module]` macro from `chain-module-sdk`. The behavior is
+//! `#[chain_module]` macro from `chain-module-sdk`. The behavior is
 //! unchanged from v0.2.1: a configured Ollama-compatible endpoint
 //! drives a real plan when `llm_endpoint` is set, otherwise the
 //! deterministic stub from v0.1.0 takes over.
@@ -21,7 +21,7 @@ pub use plan::{Plan, PlanStep, build_stub_plan, parse_and_validate, validate};
 
 use chain_module_sdk::prelude::*;
 
-#[fai_module]
+#[chain_module]
 pub fn invoke(_ctx: Context, inputs: Inputs) -> Result<Outputs, ModuleError> {
     let goal = inputs.require_text("goal")?;
     let llm_endpoint = inputs