ci: simplify pipeline - use GOPRIVATE for direct git access, no package registry

.drone.yml

@@ -1,60 +1,37 @@
 ---
 kind: pipeline
 type: docker
-name: go-core-ci
+name: go-core
 
 trigger:
-  branch:
-    - main
-    - develop
   event:
     - push
     - pull_request
-
-environment:
-  GOPRIVATE: git.beatrice.wtf/panic.haus/*
-  GONOSUMDB: git.beatrice.wtf/panic.haus/*
-
-steps:
-  - name: test
-    image: golang:1.26
-    commands:
-      - go mod download
-      - go test ./... -count=1
-
-  - name: build
-    image: golang:1.26
-    commands:
-      - go build ./...
-
----
-kind: pipeline
-type: docker
-name: go-core-release
-
-trigger:
-  event:
     - tag
-  ref:
-    - refs/tags/v*
 
 environment:
   GOPRIVATE: git.beatrice.wtf/panic.haus/*
   GONOSUMDB: git.beatrice.wtf/panic.haus/*
+  GONOSUMCHECK: git.beatrice.wtf/panic.haus/*
 
 steps:
   - name: test
     image: golang:1.26
+    volumes:
+      - name: go-mod-cache
+        path: /go/pkg/mod
     commands:
       - go mod download
       - go test ./... -count=1
 
   - name: build
     image: golang:1.26
+    volumes:
+      - name: go-mod-cache
+        path: /go/pkg/mod
     commands:
       - go build ./...
 
-  - name: warm-proxy
+volumes:
-    image: golang:1.26
+  - name: go-mod-cache
-    commands:
+    temp: {}
-      - go list -m git.beatrice.wtf/panic.haus/go-core@${DRONE_TAG}