feat: Implement NotifyPanelComponent with unit tests and mock API service

- Added NotifyPanelComponent for managing notification channels and rules.
- Implemented reactive forms for channel and rule management.
- Created unit tests for NotifyPanelComponent to validate functionality.
- Developed MockNotifyApiService to simulate API interactions for testing.
- Added mock data for channels, rules, and deliveries to facilitate testing.
- Introduced RuntimeEventFactoryTests to ensure correct event creation with build ID.

ops/devops/sync-preview-nuget.sh

@@ -3,12 +3,14 @@
 # Sync preview NuGet packages into the local offline feed.
 # Reads package metadata from ops/devops/nuget-preview-packages.csv
 # and ensures ./local-nuget holds the expected artefacts (with SHA-256 verification).
+# Optional 4th CSV column can override the download base (e.g. dotnet-public flat container).
 
 set -euo pipefail
 
 repo_root="$(git -C "${BASH_SOURCE%/*}/.." rev-parse --show-toplevel 2>/dev/null || pwd)"
 manifest="${repo_root}/ops/devops/nuget-preview-packages.csv"
 dest="${repo_root}/local-nuget"
+nuget_v2_base="${NUGET_V2_BASE:-https://www.nuget.org/api/v2/package}"
 
 if [[ ! -f "$manifest" ]]; then
   echo "Manifest not found: $manifest" >&2
@@ -21,8 +23,17 @@ fetch_package() {
   local package="$1"
   local version="$2"
   local expected_sha="$3"
+  local source_base="$4"
   local target="$dest/${package}.${version}.nupkg"
-  local url="https://www.nuget.org/api/v2/package/${package}/${version}"
+  local url
+
+  if [[ -n "$source_base" ]]; then
+    local package_lower
+    package_lower="${package,,}"
+    url="${source_base%/}/${package_lower}/${version}/${package_lower}.${version}.nupkg"
+  else
+    url="${nuget_v2_base%/}/${package}/${version}"
+  fi
 
   echo "[sync-nuget] Fetching ${package} ${version}"
   local tmp
@@ -41,7 +52,7 @@ fetch_package() {
   trap - RETURN
 }
 
-while IFS=',' read -r package version sha; do
+while IFS=',' read -r package version sha source_base; do
   [[ -z "$package" || "$package" == \#* ]] && continue
 
   local_path="$dest/${package}.${version}.nupkg"
@@ -56,5 +67,5 @@ while IFS=',' read -r package version sha; do
     echo "[sync-nuget] Missing ${package} ${version}"
   fi
 
-  fetch_package "$package" "$version" "$sha"
+  fetch_package "$package" "$version" "$sha" "${source_base:-}"
 done < "$manifest"