Platform config templates & Postgres migration recovery

- Added Linux/Windows startup config templates and README
- Updated default paths to FHS-compliant locations
- Improved publish profiles for platform targeting
- Enhanced Postgres migration: auto-recover on 42P07 errors
- Added RecordMigrationAsAppliedAsync for manual migration history
- Improved migration logging and error handling
- Added detailed documentation for config and migration fixes

Jellyfin.Server/Properties/PublishProfiles/FolderProfile.pubxml

@@ -8,12 +8,12 @@
     <LastUsedBuildConfiguration>Release</LastUsedBuildConfiguration>
     <LastUsedPlatform>Any CPU</LastUsedPlatform>
     <PublishProvider>FileSystem</PublishProvider>
-    <PublishUrl>E:\Program Files\Jellyfin-linux</PublishUrl>
+    <PublishUrl>E:\Program Files\Jellyfin-win</PublishUrl>
     <WebPublishMethod>FileSystem</WebPublishMethod>
     <_TargetId>Folder</_TargetId>
     <SiteUrlToLaunchAfterPublish />
     <TargetFramework>net11.0</TargetFramework>
-    <RuntimeIdentifier>linux-x64</RuntimeIdentifier>
+    <RuntimeIdentifier>win-x64</RuntimeIdentifier>
     <ProjectGuid>07e39f42-a2c6-4b32-af8c-725f957a73ff</ProjectGuid>
     <SelfContained>false</SelfContained>
   </PropertyGroup>

Jellyfin.Server/Properties/PublishProfiles/FolderProfile.pubxml.user

@@ -2,8 +2,8 @@
 <!-- https://go.microsoft.com/fwlink/?LinkID=208121. -->
 <Project>
   <PropertyGroup>
-    <_PublishTargetUrl>E:\Program Files\Jellyfin-linux</_PublishTargetUrl>
-    <History>True|2026-02-26T14:50:00.8144584Z||;</History>
+    <_PublishTargetUrl>E:\Program Files\Jellyfin-win</_PublishTargetUrl>
+    <History>True|2026-02-26T18:27:30.4752489Z||;True|2026-02-26T09:50:00.8144584-05:00||;</History>
     <LastFailureDetails />
   </PropertyGroup>
 </Project>