Description

Description of problem:

Gitea/Forgejo provider returns “not supported” for GetTaskURI, so remote
taskRef URLs that resolve on GitHub do not work for Gitea/ Forgejo. This is
a parity gap.

Prerequisites (if any, like setup, operators/versions):

• Pipelines-as-Code with Gitea/Forgejo provider enabled
• Repository CR configured with type: gitea and git_provider.url

Steps to Reproduce

Configure a Repository CR using Gitea/Forgejo
Create a PipelineRun or TaskRun with a remote taskRef URL hosted on the same Gitea/Forgejo instance
Trigger a run (PR or push)
Observe that task resolution fails due to provider returning unsupported

Expected results:

Gitea/Forgejo provider resolves remote taskRef URLs similarly to GitHub, returning task contents when the URL host matches the repo.

Reproducibility (Always/Intermittent/Only Once):

Always

Acceptance criteria:

• GetTaskURI in Gitea/Forgejo provider resolves remote task URLs for same-host repositories.
• Behavior matches GitHub’s URL resolution rules for supported URL formats.
• Unit tests cover successful and failing URL cases.
• Documentation impact identified (follow-up doc ticket if needed).

Additional info (Such as Logs, Screenshots, etc):

References:

• Gitea provider stub: pkg/provider/gitea/gitea.go:116-118
• GitHub implementation: pkg/provider/github/github.go:138-170