Starter and starter-auth converted end to end with e2e green

[borisno2]

Parent

#1129 — build spec 9 of the Prisma 8 architecture spec. Lands on the prisma-8 integration branch, not main.

What to build

The two examples the scaffolder copies from run on Postgres under opensaas dev on the query-value surface: every context.db call site on PascalCase keys with the read/write subsets, relationship writes as connect on the owning side, to-one reads null-safe, seeds under uuid7 ids, their test scripts rewritten, and the starter-auth e2e suite including the plain-Node anchor green locally and in CI.

Acceptance criteria

• pnpm create opensaas-app then pnpm dev works from both templates on a clean machine
• The starter-auth e2e suite passes on the Dev database and on CI's container
• No SQLite, prismaClientConstructor, findMany or nested-write spelling remains in either example

Blocked by

• CI on pgvector-capable Postgres 17 with the escape on every job, the nightly cold clone, and e2e through the lookup #1160
• Adapter transactions, the auth-flow suite, the plain-Node anchor and the auth package's manifest and guidance #1162
• The item form writes to-many edges against the related list; null-safe relationship cells; id coercion in admin routing #1166

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