fix: chore: consolidate issue templates into .forgejo/ISSUE_TEMPLATE/ — currently orphaned in .codeberg/, not read by Forgejo (#626)

.codeberg/ISSUE_TEMPLATE/refactor.yaml

@@ -1,50 +0,0 @@
-name: Refactor / Tech Debt
-about: Code improvement without changing behavior
-labels:
-  - backlog
-body:
-  - type: textarea
-    id: what
-    attributes:
-      label: What needs cleaning up
-      description: Current state and why it's a problem.
-    validations:
-      required: true
-  - type: textarea
-    id: approach
-    attributes:
-      label: Approach
-      description: How to fix it. Specifics matter — the dev-agent will follow this literally.
-    validations:
-      required: true
-  - type: textarea
-    id: affected-files
-    attributes:
-      label: Affected files
-      description: Every file that will change. Include test files.
-    validations:
-      required: true
-  - type: textarea
-    id: acceptance
-    attributes:
-      label: Acceptance criteria
-      placeholder: |
-        - [ ] Refactored code works identically (no behavior change)
-        - [ ] Existing tests still pass
-        - [ ] CI green
-    validations:
-      required: true
-  - type: textarea
-    id: deps
-    attributes:
-      label: Dependencies
-      description: Issues that must be merged first. Leave empty if none.
-      placeholder: "- #NNN (reason)"
-  - type: textarea
-    id: risks
-    attributes:
-      label: Risks
-      description: What could break? Which e2e tests cover this area?
-      placeholder: |
-        - Phase handler changes could break dev/action/review lifecycle
-        - ShellCheck may flag new patterns