Phase 1: deterministic pgpm/export timestamps and plan ordering

[pyramation]

Summary

Phase 1 non-determinism fixes for the code-generation pipeline.

pgpm/export now introspects information_schema.columns to detect timestamptz columns whose default expression is non-deterministic (now(), CURRENT_TIMESTAMP, clock_timestamp(), or now() + '...'::interval) and omits them from exported INSERT rows. The column's DDL DEFAULT supplies the value at deploy time, so generated migrations stop containing literal ISO timestamps. The same omission is applied in both the SQL (exportMeta) and GraphQL (exportGraphQLMeta) flows.

pgpm/core plan generator and writer now use a fixed epoch timestamp (2017-08-11T08:11:51Z) and sort plan dependency brackets deterministically, eliminating run-to-run timestamp and ordering drift. pgpm/core/src/core/class/pgpm.ts now imports the shared getNow from files/plan/generator instead of redefining it.

pgpm/export/src/meta-export-tables.json is synced with constructive-db to include integration_providers_module so the generated service migration set is consistent.

Example

export function getNow(): string {
  const frozen = process.env.PGPM_FROZEN_TIME;
  if (frozen) return getUTCTimestamp(new Date(frozen));
  return '2017-08-11T08:11:51Z';
}

Closes / related: https://github.com/constructive-io/constructive-planning/issues/1148

Verification

• pnpm --filter @pgpmjs/core build:dev passed
• pnpm --filter @pgpmjs/export build:dev passed
• pnpm --filter pgpm build:dev passed
• pgpm/core snapshots updated with jest -u to reflect deterministic dependency ordering
• constructive-db pnpm run generate:constructive was run twice with these packages; services/constructive-services/deploy/migrate/database.sql, pgpm.plan files, and application/constructive/pgpm.plan were identical across runs and contained no literal ISO timestamps.

Blockers

• @pgpmjs/export and @pgpmjs/core changes must be published before constructive-db can consume them. The deploy pipeline will handle the version bump; no package.json version changes are included in this PR.

Next steps

• Merge and publish constructive pgpm packages.
• Update constructive-db to use the published versions and regenerate to confirm.

Link to Devin session: https://app.devin.ai/sessions/866a2246ce1345918ec707e9a09e5b9b
Requested by: @pyramation

[devin-ai-integration]

🤖 Devin AI Engineer

I'll be helping with this pull request! Here's what you should know:

✅ I will automatically:

• Address comments on this PR. Add '(aside)' to your comment to have me ignore it.
• Look at CI failures and help fix them

Note: I can only respond to comments from users who have write access to this repository.

⚙️ Control Options:

• Disable automatic comment, CI, and merge conflict monitoring