scripts: publish unified Agent artifacts and restore CI coverage [CI]

Remove Probe build jobs and release paths. Transfer Gitea publishing credentials to both Agent architecture jobs, publish each platform archive once, and run slow tests after development images are published.

.woodpecker/gitea-release.yml

@@ -17,7 +17,7 @@ depends_on:
   - windows-release
 
 steps:
-  - name: publish-agent-probe-oci
+  - name: publish-agent-oci
     image: bash
     environment:
       GITEA_BASE: http://127.0.0.1:3100
@@ -45,4 +45,4 @@ steps:
     commands:
       - bash ci/publish-gitea-release.sh
     depends_on:
-      - publish-agent-probe-oci
+      - publish-agent-oci