feat: add locale and includeFallback support to taxonomy CDA delivery

[cs-raj]

feat: add locale and includeFallback support to taxonomy CDA delivery

Adds locale-aware retrieval for taxonomy and term CDA endpoints

• Taxonomy.fetch(locale?) — pass locale to GET /taxonomies/{uid}
• TermQuery.locale(code) + includeFallback() — chainable params on
  GET /taxonomies/{uid}/terms for locale and fallback filtering
• Term.fetch(locale?) — pass locale to GET /taxonomies/{uid}/terms/{uid}
• Fixed incorrect JSDoc on Term.fetch (copy-paste from descendants)
• Fixed broken test imports pointing to non-existent src/lib/* paths

[github-actions]

🔒 Security Scan Results

ℹ️ Note: Only vulnerabilities with available fixes (upgrades or patches) are counted toward thresholds.

Check Type	Count (with fixes)	Without fixes	Threshold	Result
🔴 Critical Severity	0	0	10	✅ Passed
🟠 High Severity	0	0	25	✅ Passed
🟡 Medium Severity	0	0	500	✅ Passed
🔵 Low Severity	0	0	1000	✅ Passed

⏱️ SLA Breach Summary

✅ No SLA breaches detected. All vulnerabilities are within acceptable time thresholds.

Severity	Breaches (with fixes)	Breaches (no fixes)	SLA Threshold (with/no fixes)	Status
🔴 Critical	0	0	15 / 30 days	✅ Passed
🟠 High	0	0	30 / 120 days	✅ Passed
🟡 Medium	0	0	90 / 365 days	✅ Passed
🔵 Low	0	0	180 / 365 days	✅ Passed

✅ BUILD PASSED - All security checks passed