ci: add bug report issue template

.github/ISSUE_TEMPLATE/bug_report.yml

@@ -0,0 +1,56 @@
+name: Bug Report
+description: Report a bug or unexpected behavior
+labels: ["bug"]
+body:
+  - type: markdown
+    attributes:
+      value: Thanks for reporting a bug! Please fill out the sections below.
+  - type: textarea
+    id: description
+    attributes:
+      label: Describe the bug
+      description: A clear description of what happened vs what you expected.
+      placeholder: "When I click X, Y happens instead of Z..."
+    validations:
+      required: true
+  - type: textarea
+    id: steps
+    attributes:
+      label: Steps to reproduce
+      description: Minimal steps to reproduce the behavior.
+      placeholder: |
+        1. Go to '...'
+        2. Click on '...'
+        3. See error
+    validations:
+      required: true
+  - type: dropdown
+    id: component
+    attributes:
+      label: Component
+      description: Which part of the system is affected?
+      options:
+        - Frontend (React UI)
+        - Backend (FastAPI)
+        - Poller (Go)
+        - Database / Migrations
+        - Authentication / SRP
+        - Device Communication
+        - VPN / WireGuard
+        - Certificates / CA
+        - Docker / Infrastructure
+        - Other
+    validations:
+      required: true
+  - type: textarea
+    id: environment
+    attributes:
+      label: Environment
+      description: Browser, OS, Docker version, etc.
+      placeholder: "Chrome 125, macOS 15, Docker 27.x"
+  - type: textarea
+    id: logs
+    attributes:
+      label: Relevant logs or screenshots
+      description: Paste error messages, console output, or attach screenshots.
+      render: shell