feat(cli): add install command for vscode extension

crates/forge_main/src/cli.rs

@@ -145,6 +145,10 @@
 
     /// Process JSONL data through LLM with schema-constrained tools.
     Data(DataCommandGroup),
+
+    /// Install components and extensions.
+    #[command(subcommand)]
+    Install(InstallCommand),
 }
 
 /// Command group for custom command management.
@@ -687,6 +691,13 @@
     }
 }
 
+/// Install commands for components and extensions.
+#[derive(Subcommand, Debug, Clone)]
+pub enum InstallCommand {
+    /// Install the Forge VS Code extension.
+    VscodeExtension,
+}
+
 #[cfg(test)]
 mod tests {
     use clap::Parser;
@@ -1570,4 +1581,14 @@
         };
         assert_eq!(actual, true);
     }
+
+    #[test]
+    fn test_install_vscode_extension() {
+        let fixture = Cli::parse_from(["forge", "install", "vscode-extension"]);
+        let actual = match fixture.subcommands {
+            Some(TopLevelCommand::Install(InstallCommand::VscodeExtension)) => true,
+            _ => false,
+        };
+        assert_eq!(actual, true);
+    }
 }

crates/forge_main/src/ui.rs

@@ -641,6 +641,14 @@ impl<A: API + 'static, F: Fn() -> A + Send + Sync> UI<A, F> {
                     self.writeln(data?)?;
                 }
             }
+            TopLevelCommand::Install(install_command) => {
+                match install_command {
+                    crate::cli::InstallCommand::VscodeExtension => {
+                        self.on_vscode_extension_install().await?;
+                    }
+                }
+                return Ok(());
+            }
         }
         Ok(())
     }
@@ -1461,6 +1469,35 @@ impl<A: API + 'static, F: Fn() -> A + Send + Sync> UI<A, F> {
         Ok(())
     }
 
+    /// Install the Forge VS Code extension
+    async fn on_vscode_extension_install(&mut self) -> anyhow::Result<()> {
+        self.spinner
+            .start(Some("Installing Forge VS Code extension"))?;
+
+        match crate::vscode::install_extension() {
+            Ok(true) => {
+                self.spinner.stop(None)?;
+                self.writeln_title(TitleFormat::info(
+                    "Forge VS Code extension installed successfully",
+                ))?;
+            }
+            Ok(false) => {
+                self.spinner.stop(None)?;
+                self.writeln_title(TitleFormat::error(
+                    "Failed to install Forge VS Code extension.",
+                ))?;
+            }
+            Err(e) => {
+                self.spinner.stop(None)?;
+                self.writeln_title(TitleFormat::error(format!(
+                    "Failed to install Forge VS Code extension: {e}"
+                )))?;
+            }
+        }
+
+        Ok(())
+    }
+
     /// Setup ZSH integration by updating .zshrc
     async fn on_zsh_setup(&mut self) -> anyhow::Result<()> {
         // Check nerd font support