L10 Token Engine v4.3.9 Weekly Run and Security Hardening

[dcplatforms]

Successfully completed the August 2026 Weekly Product Owner and Forward Engineering loop for L10: Token Engine (v4.3.9). Aligned production weak secret rejection with L5 API specifications, updated microservice versioning, enhanced the security test suites, compiled the weekly update report, and verified 100% functional health check compliance.

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PR created automatically by Jules for task 15123692052910087893 started by @dcplatforms

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Note

Medium Risk
Changes production auth middleware for a globally protected training endpoint; behavior is narrow (fail-closed on a known weak secret) but touches security-critical JWT validation.

Overview
L10 Token Engine v4.3.9 aligns production JWT handling with L5/L6 by treating dev_secret_change_in_production as a blocked weak secret when NODE_ENV === 'production', returning the same 500 configuration error as other defaults in authenticateToken.

The release bumps 4.3.8 → 4.3.9 in package.json, /health, and the GET /data/training/rewards export source string. Coverage adds a security test for the new secret and a verify_l10_v4_3_9.js smoke script; an August 2026 weekly report documents the change.

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[cursor]

Cursor Bugbot has reviewed your changes using high effort and found 1 potential issue.

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[cursor]

Verify script wrong index path

Low Severity

The new verify_l10_v4_3_9.js loads the app via require('./index') (relative to the script file) but reads source with fs.readFileSync('./index.js') (relative to the process working directory). Running the script from the repo root makes static checks read the wrong file or throw, while the health check can still pass against the real service.

 

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