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.lock

@@ -40,8 +40,8 @@ checksum = "9330f8b2ff13f34540b44e946ef35111825727b38d33286ef986142615121801"
 
 [[package]]
 name = "chain-module-sdk"
-version = "0.1.2"
-source = "git+https://git.flemming.ai/fai/chain-module-sdk-rust.git?branch=main#98e98e9371f7409560a1ef08bc0923d9a2506449"
+version = "0.3.0"
+source = "git+https://git.flemming.ai/fai/chain-module-sdk-rust.git?tag=v0.3.0#a4415ada7e76aac5e3aabf3e4c4311ffc348d8d0"
 dependencies = [
  "chain-module-sdk-macros",
  "serde",
@@ -52,8 +52,8 @@ dependencies = [
 
 [[package]]
 name = "chain-module-sdk-macros"
-version = "0.1.2"
-source = "git+https://git.flemming.ai/fai/chain-module-sdk-rust.git?branch=main#98e98e9371f7409560a1ef08bc0923d9a2506449"
+version = "0.3.0"
+source = "git+https://git.flemming.ai/fai/chain-module-sdk-rust.git?tag=v0.3.0#a4415ada7e76aac5e3aabf3e4c4311ffc348d8d0"
 dependencies = [
  "proc-macro2",
  "quote",

Cargo.toml

@@ -17,7 +17,7 @@ description = "F∆I module providing text.translate"
 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"

README.md

@@ -20,7 +20,7 @@ fai test .                 # load the wasm component in the runtime sandbox
 The module body is one decorated function:
 
 ```rust
-#[fai_module]
+#[chain_module]
 pub fn invoke(_ctx: Context, inputs: Inputs) -> Result<Outputs, ModuleError> {
     let message = inputs.require_text("message")?;
     Ok(Outputs::new().with_text("reply", format!("got: {message}")))

src/lib.rs

@@ -18,7 +18,7 @@ Preserve formatting, paragraph structure, named entities, and \
 proper nouns. Emit only the translation — no preamble, no \
 metadata, no quoting.";
 
-#[fai_module]
+#[chain_module]
 pub fn invoke(_ctx: Context, inputs: Inputs) -> Result<Outputs, ModuleError> {
     let text = inputs.require_text("text")?.to_string();
     let target_language = inputs.require_text("target_language")?.to_string();