chore: add bug report and feature request issue templates

.gitea/issue_template/bug_report.yaml

@@ -0,0 +1,50 @@
+name: Bug Report
+about: Something isn't working as expected
+labels:
+  - bug
+body:
+  - type: textarea
+    id: description
+    attributes:
+      label: Description
+      description: What happened?
+    validations:
+      required: true
+  - type: textarea
+    id: reproduction
+    attributes:
+      label: Steps to Reproduce
+      description: Minimal steps to trigger the bug.
+      placeholder: |
+        1. Run `uptop serve`
+        2. Navigate to ...
+        3. See error
+    validations:
+      required: true
+  - type: textarea
+    id: expected
+    attributes:
+      label: Expected Behavior
+      description: What should have happened instead?
+    validations:
+      required: true
+  - type: textarea
+    id: environment
+    attributes:
+      label: Environment
+      description: OS, Go version, uptop version, terminal emulator.
+      placeholder: |
+        - OS: Debian 13
+        - Go: 1.26
+        - uptop: 2026.06.1
+        - Terminal: Ghostty
+    validations:
+      required: false
+  - type: textarea
+    id: logs
+    attributes:
+      label: Relevant Logs
+      description: Paste any error output or logs.
+      render: shell
+    validations:
+      required: false

.gitea/issue_template/feature_request.yaml

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+name: Feature Request
+about: Suggest a new feature or enhancement
+labels:
+  - feature
+body:
+  - type: textarea
+    id: description
+    attributes:
+      label: Description
+      description: What do you want and why?
+    validations:
+      required: true
+  - type: textarea
+    id: motivation
+    attributes:
+      label: Motivation
+      description: What problem does this solve? What workflow does it improve?
+    validations:
+      required: true
+  - type: textarea
+    id: acceptance
+    attributes:
+      label: Acceptance Criteria
+      description: How do we know this is done?
+      placeholder: |
+        - [ ] Criterion 1
+        - [ ] Criterion 2
+    validations:
+      required: false
+  - type: dropdown
+    id: scope
+    attributes:
+      label: Area
+      options:
+        - TUI
+        - API / Server
+        - Monitoring Engine
+        - Alerts
+        - Distribution / Packaging
+        - Documentation
+    validations:
+      required: false