Initial scaffold: Go backend, React frontend, Docker Compose

- Go backend: config, db (PostgreSQL migrations), auth (argon2id + sessions),
  middleware (cookie sessions, RequireAuth), chi router, cmd/server
- React frontend: Vite + React 18 + TS + Tailwind + Gruvbox palette + terminal CSS
- Docker: compose.yml (Postgres, Valkey, minio, LiveKit, coturn, Caddy),
  livekit.yaml, Caddyfile, Dockerfile (multi-stage Go+Node+Alpine)
- .env.example, .gitignore, README.md

internal/db/db.go

@@ -0,0 +1,92 @@
+package db
+
+import (
+	"context"
+	"database/sql"
+	"fmt"
+
+	"git.dustin.coffee/hobokenchicken/dumpsterChat/internal/config"
+
+	_ "github.com/jackc/pgx/v5/stdlib"
+)
+
+type DB struct {
+	*sql.DB
+}
+
+func New(cfg *config.Config) (*DB, error) {
+	db, err := sql.Open("pgx", cfg.DatabaseDSN())
+	if err != nil {
+		return nil, fmt.Errorf("open database: %w", err)
+	}
+
+	if err := db.Ping(); err != nil {
+		return nil, fmt.Errorf("ping database: %w", err)
+	}
+
+	return &DB{db}, nil
+}
+
+func (d *DB) RunMigrations() error {
+	_, err := d.ExecContext(context.Background(), migrationsSQL)
+	return err
+}
+
+const migrationsSQL = `
+CREATE TABLE IF NOT EXISTS users (
+	id UUID PRIMARY KEY DEFAULT gen_random_uuid(),
+	username VARCHAR(32) NOT NULL UNIQUE,
+	display_name VARCHAR(32),
+	email VARCHAR(255) NOT NULL UNIQUE,
+	password_hash VARCHAR(255),
+	avatar TEXT,
+	status VARCHAR(16) NOT NULL DEFAULT 'offline',
+	created_at TIMESTAMPTZ NOT NULL DEFAULT NOW()
+);
+
+CREATE TABLE IF NOT EXISTS sessions (
+	id UUID PRIMARY KEY DEFAULT gen_random_uuid(),
+	user_id UUID NOT NULL REFERENCES users(id) ON DELETE CASCADE,
+	token VARCHAR(255) NOT NULL UNIQUE,
+	expires_at TIMESTAMPTZ NOT NULL,
+	created_at TIMESTAMPTZ NOT NULL DEFAULT NOW()
+);
+
+CREATE TABLE IF NOT EXISTS servers (
+	id UUID PRIMARY KEY DEFAULT gen_random_uuid(),
+	name VARCHAR(100) NOT NULL,
+	icon TEXT,
+	owner_id UUID NOT NULL REFERENCES users(id) ON DELETE CASCADE,
+	created_at TIMESTAMPTZ NOT NULL DEFAULT NOW()
+);
+
+CREATE TABLE IF NOT EXISTS channels (
+	id UUID PRIMARY KEY DEFAULT gen_random_uuid(),
+	server_id UUID NOT NULL REFERENCES servers(id) ON DELETE CASCADE,
+	name VARCHAR(100) NOT NULL,
+	type VARCHAR(16) NOT NULL DEFAULT 'text',
+	category VARCHAR(100) NOT NULL DEFAULT 'general',
+	position INTEGER NOT NULL DEFAULT 0,
+	created_at TIMESTAMPTZ NOT NULL DEFAULT NOW(),
+	UNIQUE (server_id, name)
+);
+
+CREATE TABLE IF NOT EXISTS members (
+	user_id UUID NOT NULL REFERENCES users(id) ON DELETE CASCADE,
+	server_id UUID NOT NULL REFERENCES servers(id) ON DELETE CASCADE,
+	joined_at TIMESTAMPTZ NOT NULL DEFAULT NOW(),
+	PRIMARY KEY (user_id, server_id)
+);
+
+CREATE TABLE IF NOT EXISTS messages (
+	id UUID PRIMARY KEY DEFAULT gen_random_uuid(),
+	channel_id UUID NOT NULL REFERENCES channels(id) ON DELETE CASCADE,
+	author_id UUID NOT NULL REFERENCES users(id) ON DELETE CASCADE,
+	content TEXT NOT NULL,
+	edited_at TIMESTAMPTZ,
+	created_at TIMESTAMPTZ NOT NULL DEFAULT NOW()
+);
+
+CREATE INDEX IF NOT EXISTS idx_messages_channel_created ON messages(channel_id, created_at DESC);
+CREATE INDEX IF NOT EXISTS idx_sessions_token ON sessions(token);
+`