The scaffolder's ensureToolchain keeps 'toolchain go1.27.0' in every
module; the River tidy in the previous commit removed it from the example
app and its plugins.
- Pin River v0.47.0 (riverdatabasesql, rivertype) and tidy the example modules
- lagoon.Migrate runs the summercms.conga set: River schema v7 and summer_jobs
with the apparatus columns plus an internal river_job_id link
- conga.Manager.Dispatch writes the summer_jobs row (status IN_PROGRESS) and the
River job on the caller's *sql.Tx; a rollback leaves neither
- conga.Job wraps typed job functions so plugins never import River
- conga.StartWorker runs one client on riverdatabasesql.NewWithPgxListener with
a single-connection LISTEN pool; the final failed attempt sets ERROR
- TestListenPickupLatency: 30s poll, pickup under 1s; poll-only control 2s miss
- App-scoped typed Publish/Lookup with duplicate-provider errors
- Set plugin IDs before Register so HasPlugin sees the full set
- Greeter uses pact.OptionalMessage without importing optional
- Add party plugin registry with Register-before-Boot activation
- Add backpack, compass, bonfire, and pact capability interfaces
- Add examples/hello with two compiled plugin modules
