Fix linter issues and limit session grid to 2 columns

- Remove unused css import in mobile-terminal component
- Fix unused location parameter in custom-weblinks-addon
- Limit session list grid to maximum 2 cards per row

🤖 Generated with [Claude Code](https://claude.ai/code)

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

web/src/client/components/mobile-terminal.ts

@@ -1,4 +1,4 @@
-import { LitElement, html, css, nothing } from 'lit';
+import { LitElement, html, nothing } from 'lit';
 import { customElement, property, state } from 'lit/decorators.js';
 import { Terminal } from '@xterm/xterm';
 import { ScaleFitAddon } from '../scale-fit-addon.js';

web/src/client/components/session-list.ts

@@ -98,7 +98,7 @@ export class SessionList extends LitElement {
               </div>
             `
           : html`
-              <div class="grid grid-cols-1 md:grid-cols-2 lg:grid-cols-3 gap-4">
+              <div class="grid grid-cols-1 md:grid-cols-2 gap-4">
                 ${repeat(
                   filteredSessions,
                   (session) => session.id,

web/src/client/custom-weblinks-addon.ts

@@ -27,7 +27,7 @@ export class CustomWebLinksAddon implements ITerminalAddon {
         hover: (
           event: MouseEvent,
           uri: string,
-          location: { start: { x: number; y: number }; end: { x: number; y: number } }
+          _location: { start: { x: number; y: number }; end: { x: number; y: number } }
         ) => {
           console.log('Custom WebLinks hover:', uri);
           // Style the link on hover