refactor(cli): cover db schema declarative generate with effect lint (CLI-2409)

[7ttp]

TL;DR

brings supabase db schema declarative generate and the shared declarative helpers under the effect lint

whats introduced?

effect lint applied to db schema declarative generate:

• allow list entries for the db/schema/declarative helpers and generate
• typed errors are yielded directly
• the custom database url prompt resolves PG* fallbacks through the same layered env as --db-url
• tests use FileSystem and Path, set env through withEnvVar, and pin the native manifest parse error

ref:

• related: CLI-2409

[github-actions]

🤖 AI Review

Both independent reviews reported no findings. A separate check of the changed code found no actionable regression. Tests were not run because dependencies are absent from the read-only checkout.

Findings

No issues found.

Stats

Claude findings: 0 · Codex findings: 0 · Confirmed: 0 · Refuted: 0 · Uncertain: 0

---

Models: claude-opus-5-5 + gpt-6-sol · Trigger: auto · Workflow run

This review runs once per PR. A maintainer can request another with a /ai-review comment.

[avallete]

Effect-lint coverage for declarative generate looks mechanical.

layeredParseEnv is the previous (name) => process.env[name] ?? projectEnv[name] lookup. Other failures are the same tagged errors, now yielded directly. Tests are still there; the corrupt-manifest expect is now the full error string, including the native JSON parse message.