- Fixed Approver Expansion: Repaired the broken expandGroupFromUser function in approvers.go. It now correctly utilizes the Forgejo SDK to search for teams within an organization and expand them into individual users, while respecting the option to exclude the workflow initiator.

- Removed GitHub Dependencies: Excised the unused newGithubClient and its associated dependencies (google/go-github and oauth2) from main.go and go.mod.

   - Project Infrastructure Updates:
       - Updated Dockerfile to use golang:1.25 for consistency with go.mod.
       - Modified action.yaml to run from the local Dockerfile, ensuring that the Forgejo-specific logic is utilized.
   - Validation: Verified all changes through a successful build and by running the full test suite, all of which passed.

Dockerfile

@@ -1,4 +1,4 @@
-FROM golang:1.24 AS builder
+FROM golang:1.25 AS builder
 COPY . /var/app
 WORKDIR /var/app
 RUN go mod tidy