Phase 6.3 — GitOps deployment retrofit and standardisation

Bringing every existing application deployment onto the shared GitOps template.

Applications were onboarded over several years and drifted apart: per-repo Helm charts, kustomize leftovers, inconsistent CI stages and hand-managed single sign-on integrations. This phase retrofitted them onto one common shape so every repository looks and behaves the same way.

Scope complete August 2026. The remaining work continues as Phase 8.2 — GitOps standardisation, wave 2.