refactor: rename web/ to api/ to better reflect its purpose

The web/ folder contains the REST API, WebSocket server, and OAuth
routes — not a web frontend. Renaming to api/ clarifies this distinction
since the actual web frontend lives in panel/.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

api/bun-env.d.ts

@@ -0,0 +1,17 @@
+// Generated by `bun init`
+
+declare module "*.svg" {
+  /**
+   * A path to the SVG file
+   */
+  const path: `${string}.svg`;
+  export = path;
+}
+
+declare module "*.module.css" {
+  /**
+   * A record of class names to their corresponding CSS module classes
+   */
+  const classes: { readonly [key: string]: string };
+  export = classes;
+}