Phase 1: Monorepo scaffold, database, and dev environment

Turborepo monorepo with @forte/shared and @forte/backend workspaces.
Docker Compose dev env with PostgreSQL 16 + Valkey 8.
Fastify server with Pino JSON logging, request ID tracing, and
health endpoint. Drizzle ORM with company + location tables.

Includes:
- Root config (turbo, tsconfig, eslint, prettier)
- @forte/shared: types, schemas, currency/date utils
- @forte/backend: Fastify entry, plugins (database, redis, cors,
  error-handler, dev-auth), health route, Drizzle schema + migration
- Dev auth bypass via X-Dev-Company/Location/User headers
- Vitest integration test with clean DB per test (forte_test)
- Seed script for dev company + location

packages/backend/src/db/migrations/0000_hot_purifiers.sql

@@ -0,0 +1,25 @@
+CREATE TABLE "company" (
+	"id" uuid PRIMARY KEY DEFAULT gen_random_uuid() NOT NULL,
+	"name" varchar(255) NOT NULL,
+	"phone" varchar(50),
+	"email" varchar(255),
+	"timezone" varchar(100) DEFAULT 'America/Chicago' NOT NULL,
+	"notes" text,
+	"created_at" timestamp with time zone DEFAULT now() NOT NULL,
+	"updated_at" timestamp with time zone DEFAULT now() NOT NULL
+);
+--> statement-breakpoint
+CREATE TABLE "location" (
+	"id" uuid PRIMARY KEY DEFAULT gen_random_uuid() NOT NULL,
+	"company_id" uuid NOT NULL,
+	"name" varchar(255) NOT NULL,
+	"address" jsonb,
+	"phone" varchar(50),
+	"email" varchar(255),
+	"timezone" varchar(100),
+	"is_active" boolean DEFAULT true NOT NULL,
+	"created_at" timestamp with time zone DEFAULT now() NOT NULL,
+	"updated_at" timestamp with time zone DEFAULT now() NOT NULL
+);
+--> statement-breakpoint
+ALTER TABLE "location" ADD CONSTRAINT "location_company_id_company_id_fk" FOREIGN KEY ("company_id") REFERENCES "public"."company"("id") ON DELETE no action ON UPDATE no action;