fix(updates): Fix development appcast generation to properly extract dev items

**Problem:**
- Users with development updates enabled could not see dev releases
- The generate-dev-appcast.sh script failed to extract items from appcast-dev-items.xml
- Result: appcast-dev.xml only contained stable releases, no dev builds

**Root Cause:**
The awk script in generate-dev-appcast.sh had a logic error:
- Used 'next' which skipped entire lines when comment markers found
- Failed to properly track multi-line comment state
- Items inside appcast-dev-items.xml were never extracted

**Solution:**
Rewrote the awk script to:
- Properly handle multi-line XML comments
- Track comment state across lines without skipping
- Extract <item> blocks that are NOT inside comments
- Successfully merge dev items with stable releases

**Testing:**
✅ Script now extracts 20260112.1-dev.1 an✅ Script now extracts 20260112.1-dev.1 an✅ Script now extracts 20260112.1-dev.1 an✅ Script now extracts 20260112.1-dev.1 an✅ Script now extractsApp✅ Script s ✅ Script now extracts 20260112.1-dev.1 an✅ Script now extractsUs✅ Script now extracts 20260112.1-dev.1 an✅ Script now extracts 20260v builds.
Fixes all past dev releases that were missing from the appcast.

Author: fewtarius

appcast-dev.xml

@@ -7,6 +7,60 @@
         <language>en</language>
 
 <!-- Development releases (from appcast-dev-items.xml) -->
+<item>
+    <title>SAM 20260112.1-dev.1</title>
+    <description><![CDATA[
+        <h2>SAM 20260112.1-dev.1 (Development Build)</h2>
+        <p><strong>⚠️ This is a DEVELOPMENT release for testing purposes.</strong></p>
+        <h3>What's New:</h3>
+        <ul>
+            <li>See <a href="https://github.com/SyntheticAutonomicMind/SAM/releases/tag/20260112.1-dev.1">GitHub Releases</a> for details</li>
+        </ul>
+        <h3>Known Issues:</h3>
+        <ul>
+            <li>Development builds may contain bugs and incomplete features</li>
+        </ul>
+    ]]></description>
+    <pubDate>Tue, 13 Jan 2026 04:10:06 +0000</pubDate>
+    <sparkle:releaseNotesLink>https://github.com/SyntheticAutonomicMind/SAM/releases/tag/20260112.1-dev.1</sparkle:releaseNotesLink>
+    <sparkle:channel>development</sparkle:channel>
+    <enclosure 
+        url="https://github.com/SyntheticAutonomicMind/SAM/releases/download/20260112.1-dev.1/SAM-20260112.1-dev.1.zip"
+        sparkle:version="20260112.1-dev.1"
+        sparkle:shortVersionString="20260112.1-dev.1"
+        sparkle:edSignature="aakIGuO+kNmBiiZOw9C40L75SifunucsDQsw88lFc3YtO9kdJQ5epUZOU78rf3kXebvSQ6UDvvtn55/wnBE2Bw=="
+        length="772381192"
+        type="application/octet-stream"
+    />
+    <sparkle:minimumSystemVersion>14.0</sparkle:minimumSystemVersion>
+</item>
+<item>
+    <title>SAM 20260111.1-dev.1</title>
+    <description><![CDATA[
+        <h2>SAM 20260111.1-dev.1 (Development Build)</h2>
+        <p><strong>⚠️ This is a DEVELOPMENT release for testing purposes.</strong></p>
+        <h3>What's New:</h3>
+        <ul>
+            <li>See <a href="https://github.com/SyntheticAutonomicMind/SAM/releases/tag/20260111.1-dev.1">GitHub Releases</a> for details</li>
+        </ul>
+        <h3>Known Issues:</h3>
+        <ul>
+            <li>Development builds may contain bugs and incomplete features</li>
+        </ul>
+    ]]></description>
+    <pubDate>Mon, 12 Jan 2026 04:34:52 +0000</pubDate>
+    <sparkle:releaseNotesLink>https://github.com/SyntheticAutonomicMind/SAM/releases/tag/20260111.1-dev.1</sparkle:releaseNotesLink>
+    <sparkle:channel>development</sparkle:channel>
+    <enclosure 
+        url="https://github.com/SyntheticAutonomicMind/SAM/releases/download/20260111.1-dev.1/SAM-20260111.1-dev.1.zip"
+        sparkle:version="20260111.1-dev.1"
+        sparkle:shortVersionString="20260111.1-dev.1"
+        sparkle:edSignature="H6vssLL6EqvfGv+IRr8xF2b2fSHhyEZMaUV1q0Tau14NFXsXYA2dlBEn2fqfY6SNYB4rIfBuuU9GuoZExcBvAA=="
+        length="770511917"
+        type="application/octet-stream"
+    />
+    <sparkle:minimumSystemVersion>14.0</sparkle:minimumSystemVersion>
+</item>
 
 <!-- Stable releases (fallback from appcast.xml) -->
         <item>

scripts/generate-dev-appcast.sh

@@ -38,11 +38,30 @@ EOF
 # Use awk to properly handle multi-line comments
 DEV_ITEMS_CONTENT=$(awk '
 BEGIN { in_comment = 0; in_item = 0 }
-/<!--/ { in_comment = 1; next }
-/-->/ { in_comment = 0; next }
-!in_comment && /<item>/ { in_item = 1 }
-!in_comment && in_item { print }
-!in_comment && /<\/item>/ { in_item = 0 }
+{
+  # Check for comment start
+  if (match($0, /<!--/)) {
+    in_comment = 1
+  }
+  
+  # If not in comment, check for item tags
+  if (!in_comment) {
+    if (match($0, /<item>/)) {
+      in_item = 1
+    }
+    if (in_item) {
+      print $0
+    }
+    if (match($0, /<\/item>/)) {
+      in_item = 0
+    }
+  }
+  
+  # Check for comment end
+  if (match($0, /-->/)) {
+    in_comment = 0
+  }
+}
 ' "$DEV_ITEMS")
 
 if [ -n "$DEV_ITEMS_CONTENT" ]; then