registry: configure postgres pool explicitly

TASKS.md

@@ -2,18 +2,18 @@
 
 ## Current
 
-### `feat/postgres-pool-config`
+### `feat/postgres-registry-modularization`
 
 Status: in_progress
 
 DoD:
-- PostgreSQL pool settings are explicit instead of implicit sqlx defaults
-- pool sizing and timeouts come from runtime config/env
-- startup validates pool configuration and tests cover parsing/defaults
+- `crates/crank-registry/src/postgres.rs` is split into domain modules under `postgres/`
+- `PostgresRegistry` keeps only constructors and high-level surface wiring
+- existing registry tests still pass after module split
 
 ## Next
 
-- `feat/postgres-registry-modularization`
+- `feat/sqlx-compile-time-verification`
 
 ## Backlog