hsiegeln c2eab71a31 env(admin): per-environment color field + V2 migration
- V2__add_environment_color.sql adds a CHECK-constrained VARCHAR color column (default 'slate'); existing rows backfill to slate.
- Environment record + EnvironmentColor constants (8 preset values) flow through repository, service, and admin API.
- UpdateEnvironmentRequest.color nullable: null preserves existing; unknown values → 400.
- ITs cover valid / invalid / null-preserves behaviour; existing Environment constructor call-sites updated with the new color arg.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
2026-04-22 19:24:30 +02:00
2026-04-15 15:28:42 +02:00
2026-04-15 15:28:42 +02:00
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