Added --provider and --model flags

crates/g3-cli/src/lib.rs

@@ -62,6 +62,14 @@ pub struct Cli {
     /// Color theme for retro mode (default, dracula, or path to theme file)
     #[arg(long, value_name = "THEME")]
     pub theme: Option<String>,
+
+    /// Override the configured provider (anthropic, databricks, embedded, openai)
+    #[arg(long, value_name = "PROVIDER")]
+    pub provider: Option<String>,
+
+    /// Override the model for the selected provider
+    #[arg(long, value_name = "MODEL")]
+    pub model: Option<String>,
 }
 
 pub async fn run() -> Result<()> {
@@ -140,8 +148,23 @@ pub async fn run() -> Result<()> {
         info!("Using workspace: {}", project.workspace().display());
     }
 
-    // Load configuration
+    // Load configuration with CLI overrides
-    let config = Config::load(cli.config.as_deref())?;
+    let config = Config::load_with_overrides(
+        cli.config.as_deref(),
+        cli.provider.clone(),
+        cli.model.clone(),
+    )?;
+    
+    // Validate provider if specified
+    if let Some(ref provider) = cli.provider {
+        let valid_providers = ["anthropic", "databricks", "embedded", "openai"];
+        if !valid_providers.contains(&provider.as_str()) {
+            return Err(anyhow::anyhow!(
+                "Invalid provider '{}'. Valid options: {:?}", 
+                provider, valid_providers
+            ));
+        }
+    }
 
     // Initialize agent
     let ui_writer = ConsoleUiWriter::new();
@@ -184,7 +207,7 @@ pub async fn run() -> Result<()> {
         if cli.retro {
             // Use retro terminal UI
             run_interactive_retro(
-                config,
+                config,  // Already has overrides applied
                 cli.show_prompt,
                 cli.show_code,
                 cli.theme,
@@ -1100,7 +1123,8 @@ async fn run_autonomous(
         }
 
         // Create a new agent instance for coach mode to ensure fresh context
-        let config = g3_config::Config::load(None)?;
+        // Use the same config with overrides that was passed to the player agent
+        let config = agent.get_config().clone();
         let ui_writer = ConsoleUiWriter::new();
         let mut coach_agent = Agent::new_autonomous(config, ui_writer).await?;
 

crates/g3-config/src/lib.rs

@@ -202,4 +202,64 @@ impl Config {
         std::fs::write(path, toml_string)?;
         Ok(())
     }
+    
+    pub fn load_with_overrides(
+        config_path: Option<&str>,
+        provider_override: Option<String>,
+        model_override: Option<String>,
+    ) -> Result<Self> {
+        // Load the base configuration
+        let mut config = Self::load(config_path)?;
+        
+        // Apply provider override
+        if let Some(provider) = provider_override {
+            config.providers.default_provider = provider;
+        }
+        
+        // Apply model override to the active provider
+        if let Some(model) = model_override {
+            match config.providers.default_provider.as_str() {
+                "anthropic" => {
+                    if let Some(ref mut anthropic) = config.providers.anthropic {
+                        anthropic.model = model;
+                    } else {
+                        return Err(anyhow::anyhow!(
+                            "Provider 'anthropic' is not configured. Please add anthropic configuration to your config file."
+                        ));
+                    }
+                }
+                "databricks" => {
+                    if let Some(ref mut databricks) = config.providers.databricks {
+                        databricks.model = model;
+                    } else {
+                        return Err(anyhow::anyhow!(
+                            "Provider 'databricks' is not configured. Please add databricks configuration to your config file."
+                        ));
+                    }
+                }
+                "embedded" => {
+                    if let Some(ref mut embedded) = config.providers.embedded {
+                        embedded.model_path = model;
+                    } else {
+                        return Err(anyhow::anyhow!(
+                            "Provider 'embedded' is not configured. Please add embedded configuration to your config file."
+                        ));
+                    }
+                }
+                "openai" => {
+                    if let Some(ref mut openai) = config.providers.openai {
+                        openai.model = model;
+                    } else {
+                        return Err(anyhow::anyhow!(
+                            "Provider 'openai' is not configured. Please add openai configuration to your config file."
+                        ));
+                    }
+                }
+                _ => return Err(anyhow::anyhow!("Unknown provider: {}", 
+                    config.providers.default_provider)),
+            }
+        }
+        
+        Ok(config)
+    }
 }

crates/g3-core/src/lib.rs

@@ -412,6 +412,7 @@ Format this as a detailed but concise summary that can be used to resume the con
 pub struct Agent<W: UiWriter> {
     providers: ProviderRegistry,
     context_window: ContextWindow,
+    config: Config,
     session_id: Option<String>,
     tool_call_metrics: Vec<(String, Duration, bool)>, // (tool_name, duration, success)
     ui_writer: W,
@@ -549,6 +550,7 @@ impl<W: UiWriter> Agent<W> {
         Ok(Self {
             providers,
             context_window,
+            config,
             session_id: None,
             tool_call_metrics: Vec::new(),
             ui_writer,
@@ -958,6 +960,10 @@ The tool will execute immediately and you'll receive the result (success or erro
     pub fn get_tool_call_metrics(&self) -> &Vec<(String, Duration, bool)> {
         &self.tool_call_metrics
     }
+    
+    pub fn get_config(&self) -> &Config {
+        &self.config
+    }
 
     async fn stream_completion(
         &mut self,