fix: add minimumSoakTimeMinutes as optional alias in API contract

[adityachoudhari26]

Parent: #969

What

Add minimumSoakTimeMinutes as an optional field alongside the existing minimumSockTimeMinutes in the environment progression rule schema. This is the first step of a backwards-compatible rename.

The DB column is already correctly named (minimum_soak_time_minutes) — the typo only exists in the API layer.

Changes

OpenAPI specs — add optional alias field

• apps/api/openapi/schemas/policies.jsonnet
• apps/workspace-engine/oapi/spec/schemas/policy.jsonnet

Regenerate generated files

• apps/api/openapi/openapi.json
• apps/api/src/types/openapi.ts
• apps/web/app/api/openapi.ts
• apps/workspace-engine/oapi/openapi.json
• apps/workspace-engine/pkg/oapi/oapi.gen.go
• packages/workspace-engine-sdk/src/schema.ts
• e2e/api/schema.ts

API route handlers — dual emit/accept

• apps/api/src/routes/v1/workspaces/policies.ts — On read: emit both fields. On write: accept either (prefer new spelling).
• packages/trpc/src/routes/policies.ts — Same dual-emit / accept-either logic.

Docs — note deprecation

• docs/policies/overview.mdx
• docs/policies/environment-progression.mdx