Update CI to .NET 10, improve versioning and packaging

- Switch CI pipeline to use .NET 10.0 SDK images for build and publish jobs
- Set GIT_DEPTH=0 and fetch full git history for accurate versioning
- Refactor publish_nuget job to sanitize and inject GitVersion output into package version
- Downgrade GitVersion.MsBuild to 5.13.0 to match CLI tool version
- In csproj, set <Version> from sanitized GitVersion output with fallback
- Remove prevent-increment-of-merged-branch-version from GitVersion.yml for main/master

.gitlab-ci.yml

@@ -5,8 +5,9 @@ stages:
 variables:
   DOTNET_CLI_TELEMETRY_OPTOUT: "1"
   DOTNET_NOLOGO: "true"
+  GIT_DEPTH: "0"
 
-image: mcr.microsoft.com/dotnet/sdk:8.0
+image: mcr.microsoft.com/dotnet/sdk:10.0
 
 before_script:
   - dotnet --info
@@ -23,17 +24,22 @@ build:
 
 publish_nuget:
   stage: publish
-  image: mcr.microsoft.com/dotnet/sdk:8.0
+  image: mcr.microsoft.com/dotnet/sdk:10.0
   variables:
     NUGET_SOURCE: "$CI_API_V4_URL/projects/$CI_PROJECT_ID/packages/nuget/index.json"
-  script:
-    - dotnet restore
-    - dotnet tool install --global GitVersion.Tool --version 5.13.0 || true
-    - export PATH="$PATH:~/.dotnet/tools"
-    - gitversion /output buildserver
-    - echo "GitVersion_NuGetVersionV2=$GitVersion_NuGetVersionV2"
-    - dotnet pack src/AIFotoONLUS.Core/AIFotoONLUS.Core.csproj -c Release -o nuget --no-build
-    - dotnet nuget push "nuget/*.nupkg" --source "$NUGET_SOURCE" --api-key "$CI_JOB_TOKEN" --skip-duplicate
+  script: |
+    dotnet restore
+    git fetch --prune --unshallow || true
+    git fetch origin +refs/heads/*:refs/remotes/origin/* || true
+    git branch --show-current || true
+    dotnet tool install --global GitVersion.Tool --version 5.13.0 || true
+    export PATH="$PATH:~/.dotnet/tools"
+    GITVER=$(gitversion /showvariable NuGetVersionV2)
+    echo "Raw version: $GITVER"
+    PACKAGE_VERSION=$(echo "$GITVER" | sed 's/[{}]//g' | sed 's/[^0-9A-Za-z.-]//g')
+    echo "Package version: $PACKAGE_VERSION"
+    dotnet pack src/AIFotoONLUS.Core/AIFotoONLUS.Core.csproj -c Release -o nuget /p:PackageVersion="$PACKAGE_VERSION"
+    dotnet nuget push "nuget/*.nupkg" --source "$NUGET_SOURCE" --api-key "$CI_JOB_TOKEN" --skip-duplicate
   only:
     - main
     - master