fix(preprocess): enforce local vector startup chain

.superpowers/sdd/evidence-task-6-report.md

@@ -33,3 +33,17 @@ The cleanup boundary now begins immediately after snapshot materialization. Resu
 validation and `JobSpec` construction are guarded by the same release routine as `run_job`, so
 corrupt/mismatched resume state or constructor failure clears the pipeline holder, removes the
 private directory, and restores the snapshot registry to its prior state before propagating.
+
+## Shipped preprocessing startup contract
+
+Local-vector preprocessing now uses a dedicated Compose override. Both one-shot jobs depend on a
+successfully completed `vector-migrate`, whose transitive chain waits for database health and role
+reconciliation. The generic preprocessing overlay remains independently renderable and contains no
+local-vector services or password secrets. README commands include the local override and build the
+job image before running.
+
+The real clean-project smoke no longer injects dependencies or manually starts, reconciles, or
+migrates PostgreSQL. Its first shipped `compose run preprocess-evidence` demonstrably creates the
+database, waits for health, runs reconciliation and migration, then runs the Evidence job. Unchanged
+rerun, changed-source publish, DWH preprocessing, ACTIVE verification, and injected-failure cleanup
+all pass through the same shipped dependency path.