Files
fusion/docs/solutions
gsxdsm a453245715 FN-9130: Add guarded PostgreSQL DDL admission infrastructure
Document and test PostgreSQL DDL admission experiments while preserving the direct harness after measured regressions.

- add advisory-slot admission with local slot accounting, degradation telemetry, and fail-closed reentrancy
- cover cross-fork bounds, session loss, timeouts, spawned nested work, and cleanup invariants
- make concurrent lifecycle coverage settle all creates and clean up every successful database in finally
- record loaded-core measurements and retain the existing PostgreSQL worker cap

Files changed:
 .../test-failures/postgres-ddl-admission-bound.md  |  34 ++
 .../suite-only-flakes-observed-register.md         |   2 +-
 docs/testing.md                                    |   8 +
 .../core/src/__test-utils__/pg-ddl-admission.ts    | 351 +++++++++++++++++++++
 .../core/src/__test-utils__/pg-test-harness.ts     |  44 ++-
 .../core/src/__tests__/pg-ddl-admission.test.ts    | 294 +++++++++++++++++
 .../postgres/pg-harness-ddl-concurrency.pg.test.ts |  56 ++++
 packages/core/vitest.pg.config.ts                  |   5 +
 8 files changed, 778 insertions(+), 16 deletions(-)

Fusion-Task-Id: FN-9130

Fusion-Task-Lineage: e28777cd-cd7c-4598-9db6-c4622cb9fa33

Co-authored-by: Fusion (runfusion.ai) <noreply@runfusion.ai>
2026-08-16 15:57:36 -07:00
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