Update appcast for version 1.2.0

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

Co-Authored-By: Claude <[email protected]>

Author: mblackmon

appcast.xml

@@ -4,6 +4,47 @@
         <title>WorkTreeBuddy</title>
         <description>Updates for WorkTreeBuddy</description>
         <language>en</language>
+        <item>
+            <title>Version 1.2.0</title>
+            <pubDate>Thu, 14 Aug 2025 14:35:19 +0000</pubDate>
+            <sparkle:version>6</sparkle:version>
+            <sparkle:shortVersionString>1.2.0</sparkle:shortVersionString>
+            <description><![CDATA[
+
+            ]]></description>
+            <enclosure url="https://github.com/oreillymedia/worktreebuddy/releases/download/v1.2.0/WorkTreeBuddy.dmg"
+                       type="application/octet-stream"
+                       length="2946078"
+                       sparkle:edSignature="ZNzGeZQba6a2cfQcZZ/SxeAFFwQr6wF7J8joyy4O8dt2RdE9JuZjbpGGxsoLm2Xe477MMbW7AZawT1pRC4a/Bw==" />
+        </item>
+        <item>
+            <title>Version 1.0.1</title>
+            <pubDate>Thu, 14 Aug 2025 14:33:08 +0000</pubDate>
+            <sparkle:version>6</sparkle:version>
+            <sparkle:shortVersionString>1.0.1</sparkle:shortVersionString>
+            <description><![CDATA[
+            
+            ### Added
+            - Comprehensive README documentation
+            - Public-facing README for end users
+            - Release workflow automation script
+            - Enhanced .gitignore with Sparkle keys and IDE patterns
+            
+            ### Changed
+            - Updated build and release scripts for dual repository distribution model
+            - Repository structure now separates internal source (worktreebuddysource) from public releases (worktreebuddy)
+            - Appcast URL now points to public repository
+            - Improved setup script to check for Sparkle keys in Keychain
+            
+            ### Fixed
+            - Removed tracked xcuserdata directory from version control
+            
+            ]]></description>
+            <enclosure url="https://github.com/oreillymedia/worktreebuddy/releases/download/v1.0.1/WorkTreeBuddy.dmg"
+                       type="application/octet-stream"
+                       length="2944216"
+                       sparkle:edSignature="QymTdWtoLkGbWuLzIaTJ455TXTqw/0t0FN8cz0uGZfyhHgho+4icxKt96CRh7DSR0SvoJVt90+e3bz68sjOOCw==" />
+        </item>
         <item>
             <title>Version 1.1.0</title>
             <pubDate>Wed, 31 Jul 2025 15:00:00 +0000</pubDate>