fix: close shapes panel by default

The shapes panel (left sidebar) was always open by default when creating
a new diagram or refreshing VSCode, which can be distracting and takes up
screen space.

This change uses Draw.io's native `sidebarWidth` configuration option
set to 0 to hide the sidebar by default. Users can still manually open
it via View → Shapes when needed.

Fixes #484

Author: nisedo

CHANGELOG.md

@@ -7,6 +7,10 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 ## [1.9.0]
 
+### Changed
+
+- Shapes panel (left sidebar) is now closed by default for a cleaner initial view (fixes [#484](https://github.com/hediet/vscode-drawio/issues/484))
+
 ### Fixed
 
 - Reverts change to automatically follow VS Code dark/light theme [#457](https://github.com/hediet/vscode-drawio/issues/457)

src/DrawioClient/DrawioClientFactory.ts

@@ -97,6 +97,7 @@ export class DrawioClientFactory {
 					libraries: simpleDrawioLibrary(libs),
 					zoomFactor: config.zoomFactor,
 					globalVars: config.globalVars,
+					sidebarWidth: 0,
 				};
 			},
 			() => {

src/DrawioClient/DrawioTypes.ts

@@ -164,6 +164,12 @@ export interface DrawioConfig {
 	 * Specifies if the XML output should be compressed. The default is true.
 	 */
 	compressXml?: boolean;
+
+	/**
+	 * Specifies the initial width of the sidebar (shapes panel).
+	 * Set to 0 to hide the sidebar by default.
+	 */
+	sidebarWidth?: number;
 }
 
 export interface ColorScheme {