docs: v2.2.1 changelog and readme update

CHANGELOG.md

@@ -4,6 +4,19 @@ All notable changes to this project will be documented in this file.
 
 The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/),
 and this project adheres to [Semantic Versioning]
+## [2.2.1] - 2026-03-19 05:24 UTC
+
+### Added
+- **Leads Canvas Preview** - Leads Finder now renders results as an Excel-like HTML table in the canvas, with columns: #, Name, Platform, Followers, Region, Bio, Link
+- **Dark-Themed Leads Report** - Beautiful dark UI with emerald accents, stats grid (total leads, combined reach, top platform, top region), platform-colored badges (Instagram, Twitter, LinkedIn, YouTube, TikTok), and hover effects
+- **Auto Canvas** - Leads Finder is now a visual agent that auto-opens the canvas when preview data is available
+
+### Fixed
+- **Build Error** - Restored `<Badge variant="outline">` for plan card tech stack divs that were incorrectly replaced with plain `<div>` by an over-broad fix script
+
+### Technical Details
+- Files modified: 2 (AIAssist.tsx, openrouter.ts)
+
 ## [2.2.0] - 2026-03-19 04:44 UTC
 
 ### Added