Add pinned-apps menu with settings, UI and app-page pin buttons

[360-Host]

Motivation

• Provide users a way to pin favorite apps into the sidebar for fast access and let them control where the pinned shortcuts appear.
• Surface new apps on the Apps page and allow quick pin/unpin interactions directly from app cards.

Description

• Implement a pinned-apps system persisted in localStorage using keys 360_pinned_apps and 360_pinned_apps_position and a catalog PINNED_APP_CATALOG in assets/js/main.js with helper functions like getPinnedAppHrefs, togglePinnedApp, normalizeAppHref, and safeParseJSON.
• Render pinned apps into the sidebar via renderSidebar() with configurable placement (after-apps, top, bottom) and expose initPinnedAppsSettings() to add a settings panel UI (position selector and checkboxes) that updates storage and re-renders on change.
• Add pin/unpin buttons on app cards via initAppsPagePinButtons() and update apps.html to add a "New Apps" section with links and New! badges, fixing markup structure for the apps grid.
• Add CSS styles to assets/css/main.css for pinned app sections, toggles and the .app-pin-btn, and refactor event handling in assets/js/main.js to use delegated sidebar click handling, delegated settings button handling, and improved ripple/tap behavior, while exposing markActiveNav() for reuse.

Testing

• No automated tests were run.

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Codex Task

[supabase]

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