add Qwen OAuth support with browser authentication flow

Cargo.toml

@@ -15,6 +15,9 @@ serde = { version = "1.0", features = ["derive"] }
 serde_json = "1.0"
 tokio = { version = "1.0", features = ["full"] }
 genai = "0.4"
+base64 = "0.22"
+rand = "0.8"
+sha2 = "0.10"
 spinoff = { version = "0.8.0", features = ["dots"] }
 thiserror = "1.0"
 indoc = "2.0.5"
@@ -41,6 +44,7 @@ tree-sitter-bash = "0.23"
 once_cell = "1.20"
 arboard = "3.4"
 inquire = "0.7"
+open = "5"
 
 [profile.release]
 lto = true

src/command/configure.rs

@@ -9,6 +9,7 @@ struct ProviderOption {
     id: &'static str,
     display_name: &'static str,
     env_var: &'static str,
+    needs_api_key: bool,
 }
 
 impl fmt::Display for ProviderOption {
@@ -22,46 +23,61 @@ const PROVIDERS: &[ProviderOption] = &[
         id: "openai",
         display_name: "OpenAI",
         env_var: "OPENAI_API_KEY",
+        needs_api_key: true,
     },
     ProviderOption {
         id: "groq",
         display_name: "Groq",
         env_var: "GROQ_API_KEY",
+        needs_api_key: true,
     },
     ProviderOption {
         id: "claude",
         display_name: "Claude (Anthropic)",
         env_var: "ANTHROPIC_API_KEY",
+        needs_api_key: true,
     },
     ProviderOption {
         id: "ollama",
         display_name: "Ollama (local)",
         env_var: "",
+        needs_api_key: false,
     },
     ProviderOption {
         id: "openrouter",
         display_name: "OpenRouter",
         env_var: "OPENROUTER_API_KEY",
+        needs_api_key: true,
     },
     ProviderOption {
         id: "deepseek",
         display_name: "DeepSeek",
         env_var: "DEEPSEEK_API_KEY",
+        needs_api_key: true,
     },
     ProviderOption {
         id: "gemini",
         display_name: "Gemini (Google)",
         env_var: "GEMINI_API_KEY",
+        needs_api_key: true,
     },
     ProviderOption {
         id: "xai",
         display_name: "xAI (Grok)",
         env_var: "XAI_API_KEY",
+        needs_api_key: true,
     },
     ProviderOption {
         id: "vercel",
         display_name: "Vercel AI Gateway",
         env_var: "VERCEL_API_KEY",
+        needs_api_key: true,
+    },
+    ProviderOption {
+        id: "qwen",
+        display_name: "Qwen (OAuth)",
+        env_var: "",
+        needs_api_key: false,
     },
 ];
 
@@ -97,10 +113,16 @@ impl ConfigureCommand {
     }
 
     fn get_api_key(provider: &ProviderOption) -> Result<Option<String>, LumenError> {
-        if provider.env_var.is_empty() {
-            println!(
-                "\n  \x1b[2mOllama runs locally — no API key needed.\x1b[0m"
-            );
+        if !provider.needs_api_key {
+            if provider.id == "qwen" {
+                println!(
+                    "\n  \x1b[2mQwen OAuth will open a browser on first use to authorize your account.\x1b[0m"
+                );
+            } else {
+                println!(
+                    "\n  \x1b[2mOllama runs locally — no API key needed.\x1b[0m"
+                );
+            }
             return Ok(None);
         }
 
@@ -146,6 +168,10 @@ impl ConfigureCommand {
 
         if let Some(key) = api_key {
             config["api_key"] = json!(key);
+        } else if provider.id == "qwen" {
+            if let Some(obj) = config.as_object_mut() {
+                obj.remove("api_key");
+            }
         }
 
         let content = serde_json::to_string_pretty(&config)?;

src/command/mod.rs

@@ -41,12 +41,14 @@ impl LumenCommand {
     pub async fn execute(&self, command_type: CommandType) -> Result<(), LumenError> {
         match command_type {
             CommandType::Explain { git_entity, query } => {
-                ExplainCommand { git_entity, query }.execute(&self.provider).await
+                ExplainCommand { git_entity, query }
+                    .execute(&self.provider)
+                    .await
             }
             CommandType::List => ListCommand.execute(&self.provider).await,
             CommandType::Draft(context, draft_config) => {
                 DraftCommand {
-                    git_entity: GitEntity::Diff(Diff::from_working_tree(true)?),
+                    git_entity: GitEntity::Diff(Diff::from_working_tree(false)?),
                     draft_config,
                     context,
                 }

src/config/cli.rs

@@ -36,6 +36,7 @@ pub enum ProviderType {
     Gemini,
     Xai,
     Vercel,
+    Qwen,
 }
 
 impl FromStr for ProviderType {
@@ -52,6 +53,7 @@ impl FromStr for ProviderType {
             "gemini" => Ok(ProviderType::Gemini),
             "xai" => Ok(ProviderType::Xai),
             "vercel" => Ok(ProviderType::Vercel),
+            "qwen" => Ok(ProviderType::Qwen),
             _ => Err(format!("Unknown provider: {}", s)),
         }
     }

src/main.rs

@@ -15,6 +15,7 @@ mod diff_ui;
 mod error;
 mod git_entity;
 mod provider;
+mod qwen_oauth;
 
 #[tokio::main]
 async fn main() {