docs: switch infrastructure to local PostgreSQL + home Docker server (no Vercel/Neon)

.planning/phases/01-foundation/01-CONTEXT.md

@@ -6,7 +6,7 @@
 <domain>
 ## Phase Boundary
 
-Next.js project scaffold, Neon database with auth schema, Vercel Blob storage bucket, and single-agent authentication — the infrastructure every subsequent phase depends on. Scope ends at: agent can log in, session persists, protected routes redirect, and all infrastructure is live on Vercel.
+Next.js project scaffold, local PostgreSQL database with auth schema, and single-agent authentication — the infrastructure every subsequent phase depends on. Scope ends at: agent can log in, session persists, protected routes redirect, and the app runs locally. Eventual target is a home Docker server.
 
 </domain>
 
@@ -37,10 +37,12 @@ Next.js project scaffold, Neon database with auth schema, Vercel Blob storage bu
 - Single-agent design — standard users table rows, no multi-tenant role/status columns
 
 ### Deployment
-- Production only — deploy to Vercel at teressacopelandhomes.com
-- Secrets and environment variables managed exclusively via Vercel dashboard (never committed to repo)
-- Vercel Blob storage: single store, organized by path (e.g. `/documents/signed/`, `/documents/templates/`)
-- Deployment trigger: Vercel native Git integration (push to main → auto-deploy, no GitHub Actions)
+- Local development: `npm run dev` at `localhost:3000`
+- Database: local PostgreSQL (Docker recommended: `postgres:16` container)
+- Secrets managed via `.env.local` (never committed to repo)
+- No external cloud services — no Vercel, no Neon, no Blob storage in this phase
+- Eventual target: home server running Docker Compose (Next.js container + PostgreSQL container)
+- File storage (Phase 4+): local filesystem / Docker volume — no Vercel Blob
 
 ### Claude's Discretion
 - Exact brand color palette and visual design details (Teressa's brand assets to be used but layout specifics are open)