Add JavaDoc docstrings to all Java source files

[devin-ai-integration]

Summary

Adds class-level JavaDoc documentation to all 77 Java source files that were previously undocumented. The remaining 14 files in the codebase already had docstrings and were left unchanged. No code logic was modified.

Coverage by package:

• audit (7 files): Emphasizes HIPAA compliance, PHI access tracking, and immutable audit trails
• config (3 files): JWT authentication filter, token provider, security configuration
• controller (5 files): REST endpoint documentation with audit/compliance notes
• domain (30 files): JPA entities, embeddable value objects, and clinical/administrative enums
• dto (4 files): Data transfer objects for the REST API
• mapper (1 file): MapStruct entity-to-DTO mapping
• repository (4 files): Spring Data query interfaces
• service (4 files): Business logic with HIPAA-aware descriptions
• legacy (4 files): Native SQL export, reporting, caching services
• root (1 file): Application entry point

A handful of files also gained a missing trailing newline (EOF normalization).

Review & Testing Checklist for Human

• Spot-check docstring accuracy on HIPAA/audit classes (AuditAccess, AuditAspect, AuditEvent, PatientService) — verify descriptions don't overstate compliance guarantees or mischaracterize what the audit system actually does
• Verify no accidental logic changes — the diff should be documentation-only (plus EOF newline fixes on ~5 files). Skim the diff for any non-comment changes beyond whitespace
• Check domain entity docstrings match actual schema — e.g. Encounter references optimistic locking via @Version, Patient references embedded Address; confirm these are accurate

Notes

• Maven clean compile passes with all docstrings added
• 14 files that already had docstrings (e.g. FhirPatientMapper, MedicationAuditLogger, PharmacyIntegrationService, chronic service/domain classes) were not modified
• The docstrings follow existing patterns established by the pre-existing documented files — class-level only, 3–5 lines, {@link} cross-references where relevant

Link to Devin session: https://app.devin.ai/sessions/62d9d87eb5ac438c873ffd890d583014
Requested by: @angelalincog

---

Devin Review

Status	Commit
⚪ Not started	—

Run Devin Review

💡 Connect your GitHub account to enable automatic code reviews.

---

[devin-ai-integration]

🤖 Devin AI Engineer

I'll be helping with this pull request! Here's what you should know:

✅ I will automatically:

• Address comments on this PR. Add '(aside)' to your comment to have me ignore it.
• Look at CI failures and help fix them

Note: I can only respond to comments from users who have write access to this repository.

⚙️ Control Options:

• Disable automatic comment and CI monitoring

[devin-ai-integration]

✅ Devin Review: No Issues Found

Devin Review analyzed this PR and found no potential bugs to report.

View in Devin Review to see 3 additional findings.