Policy bot improvements: regex casing, triageLabels, automerge removal

- Convert regex patterns to (?in) inline flags with label-matching casing
- Add Needs-Author-Feedback back to triageLabels (safe for issues)
- Remove unused automergeTriggers.yml policy
- Fix Needs-Triage removal to exclude auto-applied labels
- Fix stale issue flow and issueUpdated handlers

Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>

Author: denelon

.github/policies/automergeTriggers.yml

@@ -30,7 +30,9 @@ configuration:
         triggerOnOwnActions: False
       - description: Clean email replies on every comment
         if:
-          - payloadType: Issue_Comment
+          - or:
+              - payloadType: Issue_Comment
+              - payloadType: Pull_Request_Review_Comment
         then:
           - cleanEmailReply
       - description: Remove "Help-Wanted" label when an issue goes into PR

.github/policies/labelManagement.issueUpdated.yml

@@ -14,6 +14,7 @@ configuration:
         if:
           - payloadType: Issues
           - or:
+              # Area labels — only applied manually during triage
               - labelAdded:
                   label: Area-Accessibility
               - labelAdded:
@@ -46,10 +47,15 @@ configuration:
                   label: Area-Sorting
               - labelAdded:
                   label: Area-User-Interface
-              - labelAdded:
-                  label: Blocking-Issue
+              # Issue type / context / feature labels — manually applied
               - labelAdded:
                   label: Breaking-Change
+              - labelAdded:
+                  label: Context-Elevated-User
+              - labelAdded:
+                  label: Context-User
+              - labelAdded:
+                  label: Context-System
               - labelAdded:
                   label: Dependencies
               - labelAdded:
@@ -60,20 +66,36 @@ configuration:
                   label: In-PR
               - labelAdded:
                   label: Interactive-Only-Installer
+              - labelAdded:
+                  label: Issue-Bug
+              - labelAdded:
+                  label: Issue-Docs
+              - labelAdded:
+                  label: Issue-Feature
               - labelAdded:
                   label: msstore
               - labelAdded:
                   label: Needs-Attention
               - labelAdded:
-                  label: Needs-Author-Feedback
+                  label: Needs-Repro
               - labelAdded:
                   label: Portable
               - labelAdded:
                   label: Public-Service-Announcement
               - labelAdded:
                   label: Side-By-Side
+              - labelAdded:
+                  label: Windows-Sandbox
               - labelAdded:
                   label: Zipped-Binary
+              # Needs-Author-Feedback is only auto-applied on PR open (localization),
+              # not on issue open, so it is safe to include here.
+              - labelAdded:
+                  label: Needs-Author-Feedback
+              # NOTE: Command-*, DSC-Resource, PowerShell, and Blocking-Issue
+              # are excluded because they are auto-applied by issueOpened and
+              # would prematurely remove Needs-Triage before a human has triaged
+              # the issue.
         then:
           - removeLabel:
               label: Needs-Triage