Add Jellyfin.CodeAnalysis and analyzers to all projects

Integrated Jellyfin.CodeAnalysis as a project reference across core and test projects. Added centrally managed code analysis and style enforcement packages (IDisposableAnalyzers, Microsoft.CodeAnalysis.BannedApiAnalyzers, SerilogAnalyzer, SmartAnalyzers.MultithreadingAnalyzer, StyleCop.Analyzers) to all affected projects. Updated dependency graphs, asset files, and build scripts to ensure analyzers run during builds, enforcing consistent code quality and style rules throughout the codebase. Removed custom warning properties to rely on analyzer enforcement.

tests/Jellyfin.MediaEncoding.Keyframes.Tests/obj/Jellyfin.MediaEncoding.Keyframes.Tests.csproj.nuget.dgspec.json

@@ -57,6 +57,13 @@
         "netstandard2.0": {
           "targetAlias": "netstandard2.0",
           "dependencies": {
+            "IDisposableAnalyzers": {
+              "include": "Runtime, Build, Native, ContentFiles, Analyzers",
+              "suppressParent": "All",
+              "target": "Package",
+              "version": "[4.0.8, )",
+              "versionCentrallyManaged": true
+            },
             "Jellyfin.Sdk": {
               "target": "Package",
               "version": "[2025.10.21, )",
@@ -68,6 +75,13 @@
               "version": "[3.11.0, )",
               "versionCentrallyManaged": true
             },
+            "Microsoft.CodeAnalysis.BannedApiAnalyzers": {
+              "include": "Runtime, Build, Native, ContentFiles, Analyzers",
+              "suppressParent": "All",
+              "target": "Package",
+              "version": "[4.14.0, )",
+              "versionCentrallyManaged": true
+            },
             "Microsoft.CodeAnalysis.CSharp": {
               "suppressParent": "All",
               "target": "Package",
@@ -79,6 +93,24 @@
               "target": "Package",
               "version": "[2.0.3, )",
               "autoReferenced": true
+            },
+            "SerilogAnalyzer": {
+              "suppressParent": "All",
+              "target": "Package",
+              "version": "[0.15.0, )",
+              "versionCentrallyManaged": true
+            },
+            "SmartAnalyzers.MultithreadingAnalyzer": {
+              "suppressParent": "All",
+              "target": "Package",
+              "version": "[1.1.31, )",
+              "versionCentrallyManaged": true
+            },
+            "StyleCop.Analyzers": {
+              "suppressParent": "All",
+              "target": "Package",
+              "version": "[1.2.0-beta.556, )",
+              "versionCentrallyManaged": true
             }
           },
           "centralPackageVersions": {
@@ -692,6 +724,9 @@
           "net11.0": {
             "targetAlias": "net11.0",
             "projectReferences": {
+              "E:\\Projects\\pgsql-jellyfin\\src\\Jellyfin.CodeAnalysis\\Jellyfin.CodeAnalysis.csproj": {
+                "projectPath": "E:\\Projects\\pgsql-jellyfin\\src\\Jellyfin.CodeAnalysis\\Jellyfin.CodeAnalysis.csproj"
+              },
               "E:\\Projects\\pgsql-jellyfin\\src\\Jellyfin.MediaEncoding.Keyframes\\Jellyfin.MediaEncoding.Keyframes.csproj": {
                 "projectPath": "E:\\Projects\\pgsql-jellyfin\\src\\Jellyfin.MediaEncoding.Keyframes\\Jellyfin.MediaEncoding.Keyframes.csproj"
               }

tests/Jellyfin.MediaEncoding.Keyframes.Tests/obj/project.assets.json

@@ -1444,6 +1444,7 @@
   },
   "projectFileDependencyGroups": {
     "net11.0": [
+      "Jellyfin.CodeAnalysis >= 1.0.0",
       "Jellyfin.MediaEncoding.Keyframes >= 10.11.0",
       "Jellyfin.Sdk >= 2025.10.21",
       "Microsoft.CodeAnalysis.BannedApiAnalyzers >= 4.14.0",
@@ -1490,6 +1491,9 @@
         "net11.0": {
           "targetAlias": "net11.0",
           "projectReferences": {
+            "E:\\Projects\\pgsql-jellyfin\\src\\Jellyfin.CodeAnalysis\\Jellyfin.CodeAnalysis.csproj": {
+              "projectPath": "E:\\Projects\\pgsql-jellyfin\\src\\Jellyfin.CodeAnalysis\\Jellyfin.CodeAnalysis.csproj"
+            },
             "E:\\Projects\\pgsql-jellyfin\\src\\Jellyfin.MediaEncoding.Keyframes\\Jellyfin.MediaEncoding.Keyframes.csproj": {
               "projectPath": "E:\\Projects\\pgsql-jellyfin\\src\\Jellyfin.MediaEncoding.Keyframes\\Jellyfin.MediaEncoding.Keyframes.csproj"
             }

tests/Jellyfin.MediaEncoding.Keyframes.Tests/obj/project.nuget.cache

@@ -1,6 +1,6 @@
 {
   "version": 2,
-  "dgSpecHash": "Zd3h3rZ7uhE=",
+  "dgSpecHash": "0nvUEzLEN94=",
   "success": true,
   "projectFilePath": "E:\\Projects\\pgsql-jellyfin\\tests\\Jellyfin.MediaEncoding.Keyframes.Tests\\Jellyfin.MediaEncoding.Keyframes.Tests.csproj",
   "expectedPackageFiles": [