fix(examples): run Prisma setup on Windows

[sylvesterkaczmarek]

Summary

Fix the Prisma memory example on Windows under current Node versions.

examples/memory/start-prisma.ts selects pnpm.cmd on Windows and passes it directly to spawnSync. Node 20.12.2 and newer reject direct .cmd/.bat spawning, so pnpm -F memory start:prisma can fail before Prisma runs.

This is a remaining occurrence of the Windows shim pattern reported in #1775. The open #1776 fix covers the verification runner and scripts/prettier-changed.mjs, but does not cover the Prisma memory example.

Changes

• route Prisma commands through ComSpec / cmd.exe on Windows
• keep direct pnpm spawning on non-Windows platforms
• preserve the existing Prisma arguments, working directory, environment, exit-code, and signal handling
• add focused regression coverage for Windows, non-Windows, and custom ComSpec invocation

Test plan

• added focused invocation tests under the workspace Vitest project
• verified the branch is one commit ahead of current upstream main
• full Windows runtime execution is left to CI/reviewer validation

Issue number

No separate issue. Found while checking the remaining Windows .cmd spawn sites after #1775.

Checks

• Added focused regression coverage
• No published package code changed, so no changeset is required

[chatgpt-codex-connector]

Codex Review Summary

This comment shows the latest Codex review activity on this pull request.

Review	Status	Commit	Review trigger
📝 Code Review	✅ Completed 2026-09-01T10:01:37.426063Z	8da983d	PR opened
🔒 Security Review	✅ Completed 2026-09-01T10:04:12.336161Z	8da983d	PR opened

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[changeset-bot]

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Latest commit: 8da983d

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