v0.75.1

Fixed

• GitHub Actions pipeline now detected on agent branches; pipeline_ref no longer stays null (#1010).
  The ci_fix and mr_rework flows could not detect a GitHub Actions pipeline on an agent branch, so pipeline_ref stayed null and CI-fix and MR-rework never triggered; the GitHub forge driver now resolves the branch pipeline.

Changed

• run-kind registry: one Go source of truth for runs.kind (#997).
  The eight run kinds are now sourced from a single Go registry with parity-pinned agent and web mirrors, replacing the previously duplicated kind tables; no runtime behavior change.
• API contract fixtures pin the hot DTOs against the web types (#1000).
  Differential wire-shape tests compare the Go apitypes/handler DTOs to web's apiTypes.ts so the two cannot silently drift; internal test infrastructure, no product behavior change.
• mockApi split into per-domain modules (#1011).
  The web mock API under web/src/mocks/mockApi/ is now composed from per-domain modules into one typeof-realApi object; internal refactor of dev/test infrastructure, no UI behavior change.
• Web generation-counter copy deduped into useAsyncData (#1012).
  Judge.tsx and the deferred() test fixture now reuse useAsyncData's generation-counter instead of a duplicated copy; internal refactor, no behavior change.
• Routine dependency bumps: @anthropic-ai/claude-agent-sdk to 0.3.246 (#987), gitlab.com/gitlab-org/api/client-go/v2 to v2.59.1 (#988), and actions/upload-artifact to v7.0.1 (#989).
  Routine updates; the agent-SDK bump is additive (user_message_uuid, costBasis, modelPricing, perTaskStopAffordance) with no uzi code change required, and the upload-artifact major only raises the runner floor that GitHub-hosted runners already meet.