Ny automatisk testsvit för träningslogiken.

docs/javascript-architecture.md

@@ -2028,11 +2028,30 @@ Mitigation:
 - treat backend hydration and local dirty flags as runtime concerns
 - inspect `src/runtime_services.js` together with the affected save path
 
-## 18. Recommended Future Additions
+## 18. Automated Regression Tests
+
+Run:
+
+```bash
+npm test
+```
+
+`tests/training_logic.test.js` covers:
+- training-state normalization and duplicate rejection
+- invalid, anonymous, and sub-500 ms lap exclusion
+- replacement of current-session ledger rows after corrections
+- retention of archived/deleted-session history
+- per-driver isolation and day/session aggregation
+- recommendation branch selection
+- custom goal and automatic milestone progress
+
+The suite uses Node's built-in `node:test` runner and does not add a test-framework dependency. Windows PowerShell/CMD can run the same suite with `npm.cmd test`.
+
+## 19. Recommended Future Additions
 
 If the project grows further, the next useful additions to this document are:
 - exact `resultsBySession` competitor row schema
 - exact `settings` schema snapshot
 - SQLite table contract section
 - controller-to-view ID map for critical forms/buttons
-- test checklist per module
+- additional test checklists for race generation, timing, judging, and persistence modules