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feat: add migration runner with structured failure diagnostic (E00-S03-T05)

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MigrationRunner applies pending migrations through the migration ledger
exactly once; when a migration fails it throws a MigrationFailedError
whose diagnostic is a structured object identifying the failing migration
(version), the failure phase (apply/record), the underlying cause, and the
applied/pending ledger state, serializable via toJSON. Re-exported from
the driver boundary so no other package needs the pg driver to run
migrations. Advisory lock (T04) and ready gate (T06) remain out of scope.
This commit is contained in:
implementer
2026-08-30 01:17:23 +00:00
parent 4f169ace4e
commit f6d407394d
6 changed files with 219 additions and 10 deletions
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packages/database-postgres/package.json
+1 -1
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@@ -3,7 +3,7 @@
"version": "0.0.0",
"private": true,
"type": "module",
"description": "EPPP PostgreSQL database adapter package. The single workspace package allowed to import the pg driver and Kysely (E00-S03-T02); the migration ledger (E00-S03-T03) and the migration advisory lock (E00-S03-T04) are implemented here; the migration runner (failure diagnostics) lands in later stories.",
"description": "EPPP PostgreSQL database adapter package. The single workspace package allowed to import the pg driver and Kysely (E00-S03-T02); the migration ledger (E00-S03-T03), the migration advisory lock (E00-S03-T04) and the migration runner with its failure diagnostic (E00-S03-T05) are implemented here.",
"scripts": {
"build": "tsc -p tsconfig.json",
"typecheck": "tsc -p tsconfig.json --noEmit"