Backend Aug 22-25: AI analysis, welcome-packet templating, LetterStream, DocuSeal, staff RBAC + tier gate

- analysis.py: deterministic claim scorer + /analyze /approve /letter /advance-tier endpoints (auto-runs on intake)
- packet.py + packet_fields.json: welcome-packet templating engine (6 onboarding docs, field catalog)
- letterstream.py + letters.py: certified-mail send pipeline + letter lifecycle (webhook verified)
- docuseal.py: DocuSeal signing integration
- staff.py/models.py/schema.sql/auth.py: approval actor from staff key, tier gate (APPROVED+ACTIVE+onboarding docs), onboarding_docs table
- frontend/: dependency-free static portal (intake, magic-link login/verify, dashboard)
- landing-mockups/: 4 design-stance mockups + favicons
- legal/: aup/privacy/sms-terms/terms HTML
- docs/: letter-queue scope, letterstream API contract, 6 welcome-packet templates
- review-dre-landing-2026-08-21.md: 3-variant landing feedback sprint
- compliance/DRE_Compliance_Manual.md: updated

Source synced from deployed /opt/dre-portal/app/ (was 4 days ahead of git).

landing-mockups/favicon.svg

@@ -0,0 +1,5 @@
+<svg xmlns="http://www.w3.org/2000/svg" width="512" height="512" viewBox="0 0 512 512">
+  <rect width="512" height="512" rx="112" fill="#16213a"/>
+  <rect x="10" y="10" width="492" height="492" rx="102" fill="none" stroke="#9c7c3f" stroke-width="6"/>
+  <text x="256" y="268" font-family="Georgia, 'Times New Roman', serif" font-size="180" font-weight="700" fill="#9c7c3f" text-anchor="middle" dominant-baseline="central" letter-spacing="4">DRE</text>
+</svg>