Files
PiCloud/crates/manager-core/migrations/0063_materialized_unique.sql
MechaCat02 aa5bb3e8cc feat(stateful-templates): journey + docs + concurrency fix; email deferred (M5.6)
- 0063: partial unique index on (app_id, materialized_from) + ON CONFLICT DO
  NOTHING in the reconciler, so a materialized copy is idempotent under
  concurrent reconciles (two parallel app-creates no longer duplicate a copy).
- stateful_templates journey: a group cron template + a descendant app → a
  materialized cron copy in `pic triggers ls --app`; re-apply is a NoOp.
- docs (§4.5 + CLAUDE.md): cron+queue materialization implemented; group EMAIL
  templates deferred (per-descendant inbound-secret reseal needs the master key
  threaded through the hooks + a secret-ref schema) and cleanly rejected at
  apply for now, alongside a `materialized` ls column.

Completes the v1.2 near-term batch (M1-M5, cron+queue); group email is the one
scoped follow-up.

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
2026-07-01 21:54:34 +02:00

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SQL

-- §4.5 M5: exactly one materialized copy per (descendant app, source template).
--
-- The materialization reconciler (materialize::rematerialize_stateful_templates)
-- runs on every tree/apply mutation, and two of them can run concurrently (e.g.
-- two apps created in parallel each trigger a full reconcile). Both compute the
-- same "missing" (app, template) pair and both try to insert the copy — without
-- a constraint that races into a DUPLICATE. This partial unique index makes the
-- second insert a no-op (the reconciler uses `ON CONFLICT DO NOTHING`), so a
-- copy is idempotent under concurrency.
CREATE UNIQUE INDEX triggers_materialized_uidx
ON triggers (app_id, materialized_from) WHERE materialized_from IS NOT NULL;