[elcritch]

Generated SQLite queries prepare a new statement for each execution, but only reset it afterward. The statements and their bound values remain allocated, causing native memory to grow on long-running connections and preventing those connections from closing cleanly.

Finalize each statement with nonraising deferred cleanup immediately after preparation. Cleanup runs on normal completion, binding and result-conversion failures, exceptions, and iterator break or early return. Scope query expressions locally and remove the unused statement preparation outside generated routines, while preserving execution-error reporting.

Server profiling showed live native heap growing to 2.64 GiB after 7,019 ingested records. A focused statement-cleanup experiment stayed around 26 MiB through 10,000 records. A full 10,000-record server run with the final fix peaked at 25.22 MiB and ended at 24.17 MiB, including slow or unavailable downstream services, recovery, and two idle minutes.

Add regression tests for repeated queries followed by connection closure, typed queries, generated procedures and iterators, unused routine declarations, constraint errors, and exceptional exits. SQLite and PostgreSQL suites pass in CI.

CI installs Atlas through its official install.sh script and runs the test suites through Atlas. Example builds also pass with Jester >=0.6.0, which avoids the removed stdlib scgi dependency in older releases.