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<p class="tagline">Trust-first home-nursing marketplace · Iran</p>
<nav><div class="group"><div class="label">Start here</div><ul><li><a href="../index.html">Docs home</a></li><li><a href="../overview/platform-summary.html">Platform summary &amp; ground truths</a></li></ul></div><div class="group"><div class="label">Business requirements</div><ul><li><a href="../business/index.html">Overview &amp; MVP scope</a></li><li><a href="../business/01-actors-and-onboarding.html">1. Actors &amp; onboarding</a></li><li><a href="../business/02-nurse-verification.html">2. Nurse verification</a></li><li><a href="../business/03-service-catalog-and-pricing.html">3. Service catalog &amp; pricing</a></li><li><a href="../business/04-search-and-matching.html">4. Search &amp; matching</a></li><li><a href="../business/05-booking-and-scheduling.html">5. Booking &amp; scheduling</a></li><li><a href="../business/06-evv-and-service-delivery.html">6. EVV / service delivery</a></li><li><a href="../business/07-cancellation-and-refunds.html">7. Cancellation &amp; refunds</a></li><li><a href="../business/08-payments-and-escrow.html">8. Payments &amp; escrow</a></li><li><a href="../business/09-installments-bnpl.html">9. Installments / BNPL</a></li><li><a href="../business/10-payouts.html">10. Payouts to nurses</a></li><li><a href="../business/11-reviews-trust-and-safety.html">11. Reviews, trust &amp; safety</a></li><li><a href="../business/12-messaging-and-emergencies.html">12. Messaging &amp; emergencies</a></li><li><a href="../business/13-tax-invoicing-and-legal.html">13. Tax, invoicing &amp; legal</a></li><li><a href="../business/14-notifications-and-admin.html">14. Notifications &amp; admin</a></li></ul></div><div class="group"><div class="label">Database model</div><ul><li><a href="index.html">Overview &amp; decisions</a></li><li><a href="diagrams.html">Diagrams</a></li><li><a href="01-identity-and-access.html">1. Identity &amp; access</a></li><li><a href="02-geography.html">2. Geography</a></li><li><a href="03-services-and-pricing.html">3. Services &amp; pricing</a></li><li><a href="04-verification-and-credentials.html">4. Verification &amp; credentials</a></li><li><a href="05-booking-and-scheduling.html">5. Booking &amp; scheduling</a></li><li><a href="06-payments-ledger-and-refunds.html">6. Payments, ledger &amp; refunds</a></li><li><a href="07-payouts.html">7. Payouts</a></li><li><a href="08-bnpl.html">8. BNPL / installments</a></li><li><a href="09-messaging.html">9. Messaging</a></li><li><a href="10-reviews-and-records.html">10. Reviews &amp; records</a></li><li><a href="11-notifications.html">11. Notifications</a></li><li><a class="active" href="12-audit-config-and-reference.html">12. Audit, config &amp; reference</a></li><li><a href="13-partner-centers-and-future.html">13. Partner centers &amp; future</a></li></ul></div><div class="group"><div class="label">Payments deep-dive</div><ul><li><a href="../payments/index.html">Overview &amp; exec summary</a></li><li><a href="../payments/iranian-payment-reality.html">Iranian payment reality</a></li><li><a href="../payments/escrow-ledger.html">Escrow as a ledger</a></li><li><a href="../payments/bnpl-landscape.html">BNPL landscape &amp; finding</a></li><li><a href="../payments/cancellation-and-payout.html">Cancellation &amp; nurse payout</a></li><li><a href="../payments/integration-notes.html">Integration &amp; schema touchpoints</a></li><li><a href="../payments/sources.html">Recommendations &amp; sources</a></li></ul></div><div class="group"><div class="label">Research &amp; strategy</div><ul><li><a href="../research/index.html">Overview &amp; exec summary</a></li><li><a href="../research/market-and-competitors.html">Market &amp; competitors</a></li><li><a href="../research/problems-and-risks.html">Problems &amp; risks</a></li><li><a href="../research/verification.html">Verification (research)</a></li><li><a href="../research/legal-landscape.html">Legal landscape</a></li><li><a href="../research/go-to-market.html">Go-to-market &amp; sources</a></li></ul></div><div class="group"><div class="label">Notes &amp; more</div><ul><li><a href="../notes/open-questions.html">Open questions</a></li><li><a href="../notes/future-ideas.html">Future ideas</a></li><li><a href="../wireframes/index.html">Wireframes</a></li><li><a href="../fa/index.html">Farsi documents</a></li></ul></div></nav>
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<h1 id="domain-12-audit-config-reference">Domain 12 — Audit, Config &amp; Reference</h1>
<p><a href="index.html">← Database Model</a></p>
<h3 id="audit_logs-core"><code>audit_logs</code> [CORE] <a class="anchor" href="#audit_logs-core" aria-hidden="true">#</a></h3>
<p><strong>Role:</strong> Immutable, append-only record of every state change on sensitive entities — now explicitly <strong>including <code>platform_configs</code></strong> (so finance can prove the commission rate at any moment). <strong>Why:</strong> compliance and accountability; <code>changed_fields_json</code> enables fast filtering. Plan month-partitioning + 23yr cold-storage archival before launch. Fields unchanged. <strong>Relations:</strong> polymorphic, append-only.</p>
<h3 id="system_events-mvp"><code>system_events</code> [MVP] <a class="anchor" href="#system_events-mvp" aria-hidden="true">#</a></h3>
<p><strong>Role:</strong> High-volume behavioral/analytics event log. <strong>Why kept but de-emphasized:</strong> product analytics, not compliance. It grows unbounded — at scale, pipe it to an analytics sink/warehouse rather than the transactional DB. Fields unchanged.</p>
<h3 id="platform_configs-core"><code>platform_configs</code> [CORE] <a class="anchor" href="#platform_configs-core" aria-hidden="true">#</a></h3>
<p><strong>Role:</strong> Key-value runtime business parameters — change without a deploy. <strong>Why typed values:</strong> <code>data_type</code> tells the app how to parse. <strong>New keys</strong> this revision: <code>dispute_window_hours</code> (default 72), <code>vat_rate</code> (0.10), <code>bnpl_merchant_of_record</code>, <code>bnpl_provider_commission_rate</code>, <code>bnpl_settlement_timing</code>, cancellation-tier defaults — alongside the existing <code>platform_fee_rate</code>, <code>booking_payment_deadline_minutes</code>, <code>nurse_response_deadline_hours</code>, <code>nurse_payout_interval_days</code>, <code>evv_location_tolerance_meters</code>, <code>min_rating_for_support_alert</code>. <strong>Relations:</strong> referenced everywhere; changes audited.</p>
<h3 id="iranian_holidays-mvp-new"><code>iranian_holidays</code> [MVP] — <strong>NEW</strong> <a class="anchor" href="#iranian_holidays-mvp-new" aria-hidden="true">#</a></h3>
<p><strong>Role:</strong> Shared official/religious holiday calendar (movable, partly lunar-Hijri), with a <code>is_bank_closed</code> flag. <strong>Why a real table:</strong> Iran's holidays are numerous and partly movable, and they drive <strong>payout bank-closure scheduling</strong> (PAYA/SATNA closed → a weekly payout shifts to the next business day), optional holiday pricing, and business-hour deadline math — none of which a purely manual per-nurse availability exception can express.</p>
<div class="table-wrap"><table><thead><tr><th>Field</th><th>Type</th><th>Notes</th></tr></thead><tbody>
<tr><td><code>id</code></td><td>BIGINT PK</td><td></td></tr>
<tr><td><code>holiday_date</code></td><td>DATE</td><td></td></tr>
<tr><td><code>name_fa</code></td><td>NVARCHAR(200)</td><td></td></tr>
<tr><td><code>type</code></td><td>NVARCHAR(20)</td><td><code>official</code> / <code>religious</code> / <code>national</code></td></tr>
<tr><td><code>is_bank_closed</code></td><td>BIT</td><td>Drives payout date shifting</td></tr>
</tbody></table></div>
<p><strong>Relations:</strong> referenced by payout scheduling and (optionally) pricing.</p>
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