Provisioner: Env-Aware Export & Import

Description
Provisioner should support env-aware exports and optional inline bodies for dev.

Tasks

• Default behavior unchanged: return UUIDs only.

• New query params:

  • environment=<string> → filter lookups.

  • inline=none|dev-only (default none):

    • none: UUIDs only.
    • dev-only: inline body/props only if credential_bodies.visibility = :dev_inline and env ≠ main|prod.

• Add visibility column to credential_bodies: :private (default) | :dev_inline.

• Response:

  • Add env: <string> at top-level.
  • Include problems: [...] for missing bodies.

• CLI:

  • Respect inline when present, otherwise fetch by UUID.

Acceptance Criteria

• Default unchanged (UUIDs only).
• environment=staging fetches correct variants.
• inline=dev-only works only for :dev_inline + non-prod envs.
• Missing bodies appear in problems.