docs(architecture): make section pages canonical

Docs/Architecture/README.md

@@ -0,0 +1,27 @@
+---
+title: Gig Line Architecture Documentation
+description: Architecture documentation for the Gig Line Linux-first Unreal Engine 5 demo around 6840 Hollywood Blvd.
+status: v0.1.0
+date: 2026-11-08
+---
+
+Gig Line is a Linux-first Unreal Engine 5 walking and driving demo around 6840 Hollywood Boulevard and the El Capitan Entertainment Centre. The architecture prioritises visual realism and geographically faithful placement while maintaining a fully walkable scene, reproducible asset pipeline, documented provenance, and a 60 FPS floor at 1440p.
+
+This directory contains the canonical arc42 documentation. Each section is maintained independently; update the relevant page in the same change as its implementation. Project work and future scope remain in [TODO.md](../../TODO.md) and [ROADMAP.md](../../ROADMAP.md).
+
+## Sections
+
+1. [Introduction and Goals](01_introduction_and_goals.md)
+2. [Architecture Constraints](02_architecture_constraints.md)
+3. [Context and Scope](03_context_and_scope.md)
+4. [Solution Strategy](04_solution_strategy.md)
+5. [Building Block View](05_building_block_view.md)
+6. [Runtime View](06_runtime_view.md)
+7. [Deployment View](07_deployment_view.md)
+8. [Cross-cutting Concepts](08_concepts.md)
+9. [Architecture Decisions](09_architecture_decisions.md)
+10. [Quality Requirements](10_quality_requirements.md)
+11. [Risks and Technical Debt](11_technical_risks.md)
+12. [Glossary](12_glossary.md)
+
+See also [About arc42](about-arc42.md).