Issue form templates + OS requirements docs

.github/ISSUE_TEMPLATE/bug_report.yml

@@ -0,0 +1,111 @@
+name: Bug Report
+description: Report a problem with Performance Monitor
+title: "[BUG] "
+labels: ["bug"]
+
+body:
+  - type: dropdown
+    id: component
+    attributes:
+      label: Component
+      description: Which part of Performance Monitor is affected?
+      options:
+        - Full Dashboard
+        - Lite
+        - Installer (CLI)
+        - Installer (GUI)
+        - SQL collection scripts
+    validations:
+      required: true
+
+  - type: input
+    id: version
+    attributes:
+      label: Performance Monitor Version
+      description: Check the About dialog or the release you downloaded.
+      placeholder: "e.g., 1.2.0"
+    validations:
+      required: true
+
+  - type: input
+    id: sql-version
+    attributes:
+      label: SQL Server Version
+      description: "Run SELECT @@VERSION on the target server."
+      placeholder: "e.g., SQL Server 2019 CU25"
+    validations:
+      required: true
+
+  - type: input
+    id: windows-version
+    attributes:
+      label: Windows Version
+      description: The OS where the Dashboard or Lite app is running.
+      placeholder: "e.g., Windows 11 23H2, Windows Server 2022"
+    validations:
+      required: true
+
+  - type: textarea
+    id: description
+    attributes:
+      label: Describe the Bug
+      description: A clear description of what the bug is.
+    validations:
+      required: true
+
+  - type: textarea
+    id: steps
+    attributes:
+      label: Steps to Reproduce
+      description: How can we reproduce this?
+      placeholder: |
+        1. Open the Dashboard
+        2. Click on...
+        3. See error
+    validations:
+      required: true
+
+  - type: textarea
+    id: expected
+    attributes:
+      label: Expected Behavior
+      description: What you expected to happen.
+    validations:
+      required: true
+
+  - type: textarea
+    id: actual
+    attributes:
+      label: Actual Behavior
+      description: What actually happened.
+    validations:
+      required: true
+
+  - type: textarea
+    id: errors
+    attributes:
+      label: Error Messages / Log Output
+      description: Paste any error messages or relevant log entries. Dashboard logs are in %LOCALAPPDATA%\PerformanceMonitor\Logs\.
+      render: text
+    validations:
+      required: false
+
+  - type: textarea
+    id: screenshots
+    attributes:
+      label: Screenshots
+      description: If applicable, add screenshots to help explain the problem.
+    validations:
+      required: false
+
+  - type: textarea
+    id: context
+    attributes:
+      label: Additional Context
+      description: |
+        Anything else that might help:
+        - Did this work before? If so, what changed?
+        - Is SQL Server Agent running? (Full Edition only)
+        - Are you monitoring Azure SQL DB, Azure MI, or AWS RDS?
+    validations:
+      required: false

.github/ISSUE_TEMPLATE/config.yml

@@ -1,4 +1,4 @@
-blank_issues_enabled: true
+blank_issues_enabled: false
 contact_links:
   - name: Questions & Discussion
     url: https://github.com/erikdarlingdata/PerformanceMonitor/discussions

.github/ISSUE_TEMPLATE/feature_request.yml

@@ -0,0 +1,62 @@
+name: Feature Request
+description: Suggest a new feature or enhancement
+title: "[FEATURE] "
+labels: ["enhancement"]
+
+body:
+  - type: checkboxes
+    id: component
+    attributes:
+      label: Which component(s) does this affect?
+      options:
+        - label: Full Dashboard
+        - label: Lite
+        - label: SQL collection scripts
+        - label: Installer
+        - label: Documentation
+    validations:
+      required: true
+
+  - type: textarea
+    id: problem
+    attributes:
+      label: Problem Statement
+      description: Describe the problem you're trying to solve or the limitation you're facing.
+    validations:
+      required: true
+
+  - type: textarea
+    id: solution
+    attributes:
+      label: Proposed Solution
+      description: Describe your proposed feature or enhancement.
+    validations:
+      required: true
+
+  - type: textarea
+    id: use-case
+    attributes:
+      label: Use Case
+      description: How would you use this feature? Provide a specific example.
+    validations:
+      required: true
+
+  - type: textarea
+    id: alternatives
+    attributes:
+      label: Alternatives Considered
+      description: Have you considered any alternative solutions or workarounds?
+    validations:
+      required: false
+
+  - type: textarea
+    id: context
+    attributes:
+      label: Additional Context
+      description: |
+        Anything else:
+        - Is this related to a specific SQL Server version?
+        - Would this require schema changes?
+        - How frequently would you use this feature?
+    validations:
+      required: false

.github/ISSUE_TEMPLATE/question.yml

@@ -0,0 +1,59 @@
+name: Question
+description: I have a question about Performance Monitor
+title: "[QUESTION] "
+labels: ["question"]
+
+body:
+  - type: dropdown
+    id: component
+    attributes:
+      label: Which component is your question about?
+      options:
+        - Full Dashboard
+        - Lite
+        - SQL collection scripts
+        - Installer
+        - General / setup
+    validations:
+      required: true
+
+  - type: input
+    id: version
+    attributes:
+      label: Performance Monitor Version
+      description: Check the About dialog or the release you downloaded.
+      placeholder: "e.g., 1.2.0"
+    validations:
+      required: true
+
+  - type: dropdown
+    id: question-type
+    attributes:
+      label: Is your question about how it works, or the results?
+      description: Questions about results or SQL Server tuning are better suited for https://www.erikdarling.com/ or https://dba.stackexchange.com/
+      options:
+        - How the tool works
+        - Setup / installation
+        - Results / data interpretation
+        - Contributing / development
+    validations:
+      required: true
+
+  - type: textarea
+    id: question
+    attributes:
+      label: What's your question?
+      description: A clear description of what you'd like to know.
+    validations:
+      required: true
+
+  - type: textarea
+    id: context
+    attributes:
+      label: Additional Context
+      description: |
+        Anything that might help:
+        - SQL Server version and edition
+        - Are you using Azure SQL DB, Azure MI, or AWS RDS?
+    validations:
+      required: false

Dashboard/ColumnFilterPopup.xaml.cs

@@ -32,7 +32,7 @@ private void PopulateOperatorComboBox()
         {
             OperatorComboBox.Items.Clear();
 
-            foreach (FilterOperator op in Enum.GetValues(typeof(FilterOperator)))
+            foreach (FilterOperator op in Enum.GetValues<FilterOperator>())
             {
                 OperatorComboBox.Items.Add(new ComboBoxItem
                 {

Dashboard/Controls/CriticalIssuesContent.xaml

@@ -3,6 +3,7 @@
              xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
              xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
              xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
+             xmlns:controls="clr-namespace:PerformanceMonitorDashboard.Controls"
              mc:Ignorable="d"
              d:DesignHeight="450" d:DesignWidth="800">
     <UserControl.Resources>
@@ -107,6 +108,7 @@
             </DataGridTextColumn>
         </DataGrid.Columns>
     </DataGrid>
-    <TextBlock x:Name="CriticalIssuesNoDataMessage" Style="{StaticResource NoDataMessage}"/>
+    <TextBlock x:Name="CriticalIssuesNoDataMessage" Style="{StaticResource EmptyStateMessage}" Text="No critical issues detected in selected time range"/>
+    <controls:LoadingOverlay x:Name="CriticalIssuesLoading"/>
     </Grid>
 </UserControl>