[antosubash]

Performance fix for two hot paths found by the 2026-11-05 load test.

Settings pages / GET /api/settings/modules rebuilt pydantic settings sources (env, .env, secrets dir) for every module settings class on every request.

• simple_module_core.settings_hydrate.env_supplied_fields and simple_module_hosting._api_version.default_api_version are cached per class per process.
• Behaviour change: changing environment variables, .env or the secrets directory now needs a restart. That was already true for the running app's settings; only the settings screen's "set by env" marker and the env-pinned write guard read the live environment before.
• The shared test plugin (simple_module_test.process_state) clears both caches around every test. Tests that set env mid-test clear them explicitly to simulate a restart.

Inertia page encoding walked and re-encoded the shared i18n catalog (~70–90 KB, static per locale + audience) on every full page load.

• The catalog is serialised once per (registry, locale, audience, snapshot) as a JsonSnapshot, in simple_module_inertia._json_snapshot and simple_module_hosting._i18n_json.
• Page encoding splices that snapshot in at props.i18n.messages, skipping _resolve_tree and the plain-JSON walk for it.
• Output is byte-identical for both the JSON response and the HTML data-page, escaping included. Partial reloads and X-SM-I18n-matched visits behave as before.

Median CPU per operation, 87 KB catalog:

Path	Before	After
Settings modules view	7.72 ms	3.07 ms
Inertia page JSON	1.36 ms	0.24 ms
HTML page JSON	1.55 ms	0.31 ms

Pipeline: /optimize (1 commit), correctness + maintainability review. Review fixes:

• a registry that cannot be weak-referenced is served uncached instead of returning 500;
• the snapshot module was renamed so it no longer shadows the stdlib json;
• reviewers confirmed every app entry point loads .env before the cache fills.

Local CI:

• make lint ✓ and make test-js ✓.
• make test-py (8 workers): one failure, a local stale __pycache__ directory left by the merged dashboard module move. It passes once that is removed, and it does not exist in CI.

https://claude.ai/code/session_01M9neheZZEe3sVpDi2S3zT4

[chatgpt-codex-connector]

Codex Review Summary

This comment shows the latest Codex review activity on this pull request.

Review	Status	Commit	Review trigger
🔒 Security Review	✅ Completed 2026-11-05T16:51:27.481670Z	7f206bd	PR opened

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