Scaffold full-stack volunteer scheduling application

Go backend with domain-based packages (volunteer, schedule, timeoff,
checkin, notification), SQLite storage, JWT auth, and chi router.
React TypeScript frontend with routing, auth context, and pages for
all core features. Multi-stage Dockerfile and docker-compose included.

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

internal/db/db.go

@@ -0,0 +1,27 @@
+package db
+
+import (
+	"database/sql"
+	"fmt"
+
+	_ "modernc.org/sqlite"
+)
+
+func Open(dsn string) (*sql.DB, error) {
+	db, err := sql.Open("sqlite", dsn)
+	if err != nil {
+		return nil, fmt.Errorf("open db: %w", err)
+	}
+	if err := db.Ping(); err != nil {
+		return nil, fmt.Errorf("ping db: %w", err)
+	}
+	if _, err := db.Exec(`PRAGMA journal_mode=WAL; PRAGMA foreign_keys=ON;`); err != nil {
+		return nil, fmt.Errorf("pragma: %w", err)
+	}
+	return db, nil
+}
+
+func Migrate(db *sql.DB) error {
+	_, err := db.Exec(schema)
+	return err
+}

internal/db/schema.go

@@ -0,0 +1,55 @@
+package db
+
+const schema = `
+CREATE TABLE IF NOT EXISTS volunteers (
+    id          INTEGER PRIMARY KEY AUTOINCREMENT,
+    name        TEXT    NOT NULL,
+    email       TEXT    NOT NULL UNIQUE,
+    password    TEXT    NOT NULL,
+    role        TEXT    NOT NULL DEFAULT 'volunteer', -- 'admin' | 'volunteer'
+    active      INTEGER NOT NULL DEFAULT 1,
+    created_at  TEXT    NOT NULL DEFAULT (datetime('now')),
+    updated_at  TEXT    NOT NULL DEFAULT (datetime('now'))
+);
+
+CREATE TABLE IF NOT EXISTS schedules (
+    id            INTEGER PRIMARY KEY AUTOINCREMENT,
+    volunteer_id  INTEGER NOT NULL REFERENCES volunteers(id),
+    title         TEXT    NOT NULL,
+    starts_at     TEXT    NOT NULL,
+    ends_at       TEXT    NOT NULL,
+    notes         TEXT,
+    created_at    TEXT    NOT NULL DEFAULT (datetime('now')),
+    updated_at    TEXT    NOT NULL DEFAULT (datetime('now'))
+);
+
+CREATE TABLE IF NOT EXISTS time_off_requests (
+    id            INTEGER PRIMARY KEY AUTOINCREMENT,
+    volunteer_id  INTEGER NOT NULL REFERENCES volunteers(id),
+    starts_at     TEXT    NOT NULL,
+    ends_at       TEXT    NOT NULL,
+    reason        TEXT,
+    status        TEXT    NOT NULL DEFAULT 'pending', -- 'pending' | 'approved' | 'rejected'
+    reviewed_by   INTEGER REFERENCES volunteers(id),
+    reviewed_at   TEXT,
+    created_at    TEXT    NOT NULL DEFAULT (datetime('now')),
+    updated_at    TEXT    NOT NULL DEFAULT (datetime('now'))
+);
+
+CREATE TABLE IF NOT EXISTS checkins (
+    id            INTEGER PRIMARY KEY AUTOINCREMENT,
+    volunteer_id  INTEGER NOT NULL REFERENCES volunteers(id),
+    schedule_id   INTEGER REFERENCES schedules(id),
+    checked_in_at TEXT    NOT NULL DEFAULT (datetime('now')),
+    checked_out_at TEXT,
+    notes         TEXT
+);
+
+CREATE TABLE IF NOT EXISTS notifications (
+    id            INTEGER PRIMARY KEY AUTOINCREMENT,
+    volunteer_id  INTEGER NOT NULL REFERENCES volunteers(id),
+    message       TEXT    NOT NULL,
+    read          INTEGER NOT NULL DEFAULT 0,
+    created_at    TEXT    NOT NULL DEFAULT (datetime('now'))
+);
+`