add API issue and release scaffolding

.gitea/ISSUE_TEMPLATE/bug.yml

@@ -0,0 +1,19 @@
+name: Bug report
+description: Report a reproducible defect.
+title: 'bug: '
+labels: [bug]
+body:
+  - type: textarea
+    id: reproduction
+    attributes:
+      label: Reproduction
+      description: List the smallest deterministic reproduction and expected behavior.
+    validations:
+      required: true
+  - type: textarea
+    id: verification
+    attributes:
+      label: Verification context
+      description: Include repository, branch, version, and relevant checks. Never include secrets.
+    validations:
+      required: true

.gitea/ISSUE_TEMPLATE/feature.yml

@@ -0,0 +1,18 @@
+name: Feature request
+description: Propose a change that is consistent with PLAN.md.
+title: 'feature: '
+labels: [enhancement]
+body:
+  - type: textarea
+    id: problem
+    attributes:
+      label: Problem and proposed behavior
+    validations:
+      required: true
+  - type: checkboxes
+    id: plan
+    attributes:
+      label: Planning
+      options:
+        - label: I checked PLAN.md and this does not silently change an existing decision.
+          required: true