chore: stop populating logs status field for v2 builds

[dobrac]

Stop populating logs status field for v2 builds. Saves also the builder version to the database to be able to correctly distinguish.

---

Note

Persist build version for templates, return legacy text logs only for < v2, and update API, DB, models, and orchestrator to be version-aware.

• API:
  • Build status endpoint: returns legacy result.Logs only when build version < templates.TemplateV2BetaVersion; always returns structured LogEntries.
  • Build requests: set build version (v1 for v1 endpoint, latest v2 for v2 endpoint); add version to telemetry and cache status logs.
  • Template/build caches: include build version in TemplateBuildInfo and logs.
• DB/Models:
  • Migration: add nullable version column to public.env_builds.
  • Queries: select/scan version; update status query sets version.
  • Ent/sqlc models: add version field with create/update/upsert and predicates.
• Orchestrator:
  • Gate default user/workdir phases on TemplateV2ReleaseVersion (was TemplateDefaultUserVersion).
• Utils:
  • Add DerefOrDefault, IsSmallerVersion; version constants updated (TemplateV2ReleaseVersion).
• Tests/Infra:
  • Seed: set version for builds; interfaces asserted for template manager and tests.

^{Written by Cursor Bugbot for commit c5833db. This will update automatically on new commits. Configure here.}

[linear]

ENG-3197 Stop populating logs field for v2 builds