Rebuild README and complete Supabase schema

[Dev-Sahad]

What changed

• Reconstructs the README from the current Next.js 15 application, routes, admin surfaces, data model, environment variables, security model, and deployment flow.
• Adds two repository-owned SVGs for the README banner and architecture diagram.
• Adds an idempotent Supabase SQL Editor file for comments, technologies, tech stack, and 3D scene tables.
• Adds explicit grants, RLS policies, indexes, realtime registration, Storage buckets, upload policies, and default 3D content.
• Documents the optional Gmail variables used by the contact route.

Why

The previous README described older Next.js/React versions and an incomplete schema. Production was missing four tables and all expected Storage buckets, leaving comments, technology management, uploads, and editable 3D content incomplete.

Database impact

The schema has already been applied to the connected Portfolio Supabase project and verified. All new public-schema tables have RLS enabled. Anonymous comment insert and like permissions were tested with a temporary row and the row was removed afterward.

Validation

• npm run build
• SVG XML parsing
• README local-link checks
• Supabase table, grant, bucket, seed, and advisor checks
• Anonymous comment insert/like RLS verification

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Project	Deployment	Actions	Updated (UTC)
portfolio-v1	Ready	Preview	Jul 30, 2026 8:38pm