#4 insta services add/list/remove/scale/upgrade

New services (alias svc) command group, a thin client of the platform /services API.

• insta services add <postgres|storage|compute> <name> — provision on demand (postgres/compute get a default access domain)
• insta services list [--json] · insta services remove <type> <name>
• insta services scale compute <name> <number> [region] — paid plans only
• insta services upgrade <compute|postgres> <name> <spec> — paid plans only, up-only
• Gated mutations use rawRequest + handleApproval (202 approval flow); pure validators unit-tested.
• Reword metrics/logs component → target; README command table + gated-action list updated.

Pairs with insta-platform#4. typecheck + build clean; 18 tests pass (7 new).

🤖 Generated with Claude Code

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Summary by cubic

Adds insta services (alias svc) to manage project services via the platform /services API, including add/list/remove and paid scale/upgrade actions. Also aligns observability command names and governance policies with the new service model.

• New Features

  • insta services group: add <postgres|storage|compute> <name>, list [--json], remove <type> <name>.
  • scale compute <name> <number> [region] (paid) and upgrade <compute|postgres> <name> <spec> (paid, up-only).
  • Default access domain for postgres/compute; --json supported where relevant.
  • Mutations respect governance approvals (202 approval flow).

• Refactors

  • Metrics/logs CLI now uses “target” instead of “component”.
  • Governance policy adds service.add|service.remove|service.scale|service.upgrade; README updated.