Story (Required)

The Gitea-based e2e tests (resolvers_gitea_test.go) exist in tektoncd/pipeline but are  not included in any CI job. These tests use the build tag `//go:build e2e && gitea`, which means they are excluded from normal `-tags=e2e` runs and never get executed in CI.

This task covers adding CI configuration to run these tests as part of the 
tektoncd/pipeline e2e matrix.

Background (Required)

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Out of scope

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Approach (Required)

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Dependencies

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Acceptance Criteria (Mandatory)

• Gitea e2e tests (TestGitResolver_HTTPAuth, TestGitResolver_API, TestGitResolver_API_Identifier) run in tektoncd/pipeline CI on every PR
• Existing e2e test jobs (stable, beta, alpha) are not affected
• A Makefile target is available for running Gitea tests locally

INVEST Checklist

Dependencies identified

Blockers noted and expected delivery timelines set

Design is implementable

Acceptance criteria agreed upon

Story estimated

Legend

Unknown

Verified

Unsatisfied

Done Checklist

• Code is completed, reviewed, documented and checked in
• Unit and integration test automation have been delivered and running cleanly in continuous integration/staging/canary environment
• Continuous Delivery pipeline(s) is able to proceed with new code included
• Customer facing documentation, API docs etc. are produced/updated, reviewed and published
• Acceptance criteria are met