fix(args): report the real binary name, version, and provider list

Author: cloudbridgeuy

crates/llm_stream/src/args.rs

@@ -91,13 +91,18 @@ impl FromStr for Api {
 }
 
 #[derive(Default, Clone, Debug, Parser, PartialEq, Serialize, Deserialize)]
-#[command(name = "e", version = "0.1.0")]
+#[command(name = "llm-stream", version)]
 #[command(about = "Interact with LLMs through the terminal")]
 #[command(
     long_about = "This Rust-based CLI enables users to interact with various Large Language Models
-(LLMs) directly from the terminal. Through this tool, you can send prompts to different
-APIs, such as OpenAI, Anthropic, Google, Mistral, and Mistral FIM, and receive and handle
-responses from these models.
+(LLMs) directly from the terminal. Through this tool, you can send prompts to OpenAI,
+Anthropic, Google, Mistral, Mistral FIM, Ollama, Groq, DeepSeek, or a ChatGPT subscription
+account, and receive and handle responses from these models.
+
+The `chatgpt` provider works differently from the rest: it signs in to a ChatGPT
+subscription with `--login` instead of taking an API key, it is steered with
+`--reasoning-effort` and `--reasoning-summary` rather than `--temperature` and `--top-p`,
+and `--models` reports which models the signed-in account may use.
 
 The tool offers extensive configuration options, allowing you
 to specify parameters like model type, maximum and minimum tokens, temperature, top-p

crates/llm_stream/tests/cli.rs

@@ -66,3 +66,23 @@ fn models_without_credentials_names_the_login_command() {
     );
     assert!(stdout.is_empty(), "nothing should reach stdout: {stdout}");
 }
+
+#[test]
+fn version_reports_the_binary_name_and_the_package_version() {
+    let output = match Command::new(env!("CARGO_BIN_EXE_llm-stream"))
+        .arg("--version")
+        .stdin(Stdio::null())
+        .output()
+    {
+        Ok(output) => output,
+        Err(e) => panic!("could not run the llm-stream binary: {e}"),
+    };
+
+    let stdout = String::from_utf8_lossy(&output.stdout);
+    let expected = format!("llm-stream {}", env!("CARGO_PKG_VERSION"));
+
+    // `CARGO_PKG_VERSION` here is the test's own package — the same one the
+    // binary is built from — so this stays true across version bumps without
+    // anyone remembering to edit it.
+    assert_eq!(stdout.trim(), expected, "stdout: {stdout}");
+}