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>
2026-03-05 11:25:02 -04:00
parent 64f4563bfa
commit 4989ff1061
49 changed files with 19996 additions and 12 deletions
@@ -1,27 +1,26 @@
 # ---> Go
-# If you prefer the allow list template instead of the deny list, see community template:
-# https://github.com/github/gitignore/blob/main/community/Golang/Go.AllowList.gitignore
-#
-# Binaries for programs and plugins
 *.exe
 *.exe~
 *.dll
 *.so
 *.dylib
-
-# Test binary, built with `go test -c`
 *.test
-
-# Output of the go coverage tool, specifically when used with LiteIDE
 *.out
-
-# Dependency directories (remove the comment below to include it)
 # vendor/
-
-# Go workspace file
 go.work
 go.work.sum

 # env file
 .env

+# Local database
+*.db
+*.db-shm
+*.db-wal
+
+# Go binary
+/walkies
+
+# Node
+web/node_modules/
+web/build/
@@ -0,0 +1,25 @@
+# Stage 1: Build React frontend
+FROM node:22-alpine AS frontend
+WORKDIR /app/web
+COPY web/package*.json ./
+RUN npm ci
+COPY web/ ./
+RUN npm run build
+
+# Stage 2: Build Go backend
+FROM golang:1.26-alpine AS backend
+WORKDIR /app
+COPY go.mod go.sum ./
+RUN go mod download
+COPY . .
+RUN CGO_ENABLED=0 GOOS=linux go build -o /walkies ./cmd/server
+
+# Stage 3: Final image
+FROM alpine:3.21
+RUN apk add --no-cache ca-certificates tzdata
+WORKDIR /app
+COPY --from=backend /walkies ./walkies
+COPY --from=frontend /app/web/build ./web/dist
+EXPOSE 8080
+ENV STATIC_DIR=/app/web/dist
+CMD ["./walkies"]
@@ -0,0 +1,43 @@
+package main
+
+import (
+	"fmt"
+	"log"
+	"net/http"
+	"os"
+
+	"git.unsupervised.ca/walkies/internal/db"
+	"git.unsupervised.ca/walkies/internal/server"
+)
+
+func main() {
+	dsn := getenv("DATABASE_DSN", "walkies.db")
+	jwtSecret := getenv("JWT_SECRET", "change-me-in-production")
+	staticDir := getenv("STATIC_DIR", "./web/dist")
+	port := getenv("PORT", "8080")
+
+	database, err := db.Open(dsn)
+	if err != nil {
+		log.Fatalf("open database: %v", err)
+	}
+	defer database.Close()
+
+	if err := db.Migrate(database); err != nil {
+		log.Fatalf("migrate database: %v", err)
+	}
+
+	handler := server.New(database, jwtSecret, staticDir)
+
+	addr := fmt.Sprintf(":%s", port)
+	log.Printf("server listening on %s", addr)
+	if err := http.ListenAndServe(addr, handler); err != nil {
+		log.Fatalf("server error: %v", err)
+	}
+}
+
+func getenv(key, fallback string) string {
+	if v := os.Getenv(key); v != "" {
+		return v
+	}
+	return fallback
+}
@@ -0,0 +1,15 @@
+services:
+  walkies:
+    build: .
+    ports:
+      - "8080:8080"
+    volumes:
+      - walkies-data:/app/data
+    environment:
+      DATABASE_DSN: /app/data/walkies.db
+      JWT_SECRET: change-me-in-production
+      PORT: "8080"
+      STATIC_DIR: /app/web/dist
+
+volumes:
+  walkies-data:
@@ -0,0 +1,20 @@
+module git.unsupervised.ca/walkies
+
+go 1.25.0
+
+require (
+	github.com/dustin/go-humanize v1.0.1 // indirect
+	github.com/go-chi/chi/v5 v5.2.5 // indirect
+	github.com/golang-jwt/jwt/v5 v5.3.1 // indirect
+	github.com/google/uuid v1.6.0 // indirect
+	github.com/mattn/go-isatty v0.0.20 // indirect
+	github.com/ncruces/go-strftime v1.0.0 // indirect
+	github.com/remyoudompheng/bigfft v0.0.0-20230129092748-24d4a6f8daec // indirect
+	golang.org/x/crypto v0.48.0 // indirect
+	golang.org/x/exp v0.0.0-20251023183803-a4bb9ffd2546 // indirect
+	golang.org/x/sys v0.41.0 // indirect
+	modernc.org/libc v1.67.6 // indirect
+	modernc.org/mathutil v1.7.1 // indirect
+	modernc.org/memory v1.11.0 // indirect
+	modernc.org/sqlite v1.46.1 // indirect
+)
@@ -0,0 +1,29 @@
+github.com/dustin/go-humanize v1.0.1 h1:GzkhY7T5VNhEkwH0PVJgjz+fX1rhBrR7pRT3mDkpeCY=
+github.com/dustin/go-humanize v1.0.1/go.mod h1:Mu1zIs6XwVuF/gI1OepvI0qD18qycQx+mFykh5fBlto=
+github.com/go-chi/chi/v5 v5.2.5 h1:Eg4myHZBjyvJmAFjFvWgrqDTXFyOzjj7YIm3L3mu6Ug=
+github.com/go-chi/chi/v5 v5.2.5/go.mod h1:X7Gx4mteadT3eDOMTsXzmI4/rwUpOwBHLpAfupzFJP0=
+github.com/golang-jwt/jwt/v5 v5.3.1 h1:kYf81DTWFe7t+1VvL7eS+jKFVWaUnK9cB1qbwn63YCY=
+github.com/golang-jwt/jwt/v5 v5.3.1/go.mod h1:fxCRLWMO43lRc8nhHWY6LGqRcf+1gQWArsqaEUEa5bE=
+github.com/google/uuid v1.6.0 h1:NIvaJDMOsjHA8n1jAhLSgzrAzy1Hgr+hNrb57e+94F0=
+github.com/google/uuid v1.6.0/go.mod h1:TIyPZe4MgqvfeYDBFedMoGGpEw/LqOeaOT+nhxU+yHo=
+github.com/mattn/go-isatty v0.0.20 h1:xfD0iDuEKnDkl03q4limB+vH+GxLEtL/jb4xVJSWWEY=
+github.com/mattn/go-isatty v0.0.20/go.mod h1:W+V8PltTTMOvKvAeJH7IuucS94S2C6jfK/D7dTCTo3Y=
+github.com/ncruces/go-strftime v1.0.0 h1:HMFp8mLCTPp341M/ZnA4qaf7ZlsbTc+miZjCLOFAw7w=
+github.com/ncruces/go-strftime v1.0.0/go.mod h1:Fwc5htZGVVkseilnfgOVb9mKy6w1naJmn9CehxcKcls=
+github.com/remyoudompheng/bigfft v0.0.0-20230129092748-24d4a6f8daec h1:W09IVJc94icq4NjY3clb7Lk8O1qJ8BdBEF8z0ibU0rE=
+github.com/remyoudompheng/bigfft v0.0.0-20230129092748-24d4a6f8daec/go.mod h1:qqbHyh8v60DhA7CoWK5oRCqLrMHRGoxYCSS9EjAz6Eo=
+golang.org/x/crypto v0.48.0 h1:/VRzVqiRSggnhY7gNRxPauEQ5Drw9haKdM0jqfcCFts=
+golang.org/x/crypto v0.48.0/go.mod h1:r0kV5h3qnFPlQnBSrULhlsRfryS2pmewsg+XfMgkVos=
+golang.org/x/exp v0.0.0-20251023183803-a4bb9ffd2546 h1:mgKeJMpvi0yx/sU5GsxQ7p6s2wtOnGAHZWCHUM4KGzY=
+golang.org/x/exp v0.0.0-20251023183803-a4bb9ffd2546/go.mod h1:j/pmGrbnkbPtQfxEe5D0VQhZC6qKbfKifgD0oM7sR70=
+golang.org/x/sys v0.6.0/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
+golang.org/x/sys v0.41.0 h1:Ivj+2Cp/ylzLiEU89QhWblYnOE9zerudt9Ftecq2C6k=
+golang.org/x/sys v0.41.0/go.mod h1:OgkHotnGiDImocRcuBABYBEXf8A9a87e/uXjp9XT3ks=
+modernc.org/libc v1.67.6 h1:eVOQvpModVLKOdT+LvBPjdQqfrZq+pC39BygcT+E7OI=
+modernc.org/libc v1.67.6/go.mod h1:JAhxUVlolfYDErnwiqaLvUqc8nfb2r6S6slAgZOnaiE=
+modernc.org/mathutil v1.7.1 h1:GCZVGXdaN8gTqB1Mf/usp1Y/hSqgI2vAGGP4jZMCxOU=
+modernc.org/mathutil v1.7.1/go.mod h1:4p5IwJITfppl0G4sUEDtCr4DthTaT47/N3aT6MhfgJg=
+modernc.org/memory v1.11.0 h1:o4QC8aMQzmcwCK3t3Ux/ZHmwFPzE6hf2Y5LbkRs+hbI=
+modernc.org/memory v1.11.0/go.mod h1:/JP4VbVC+K5sU2wZi9bHoq2MAkCnrt2r98UGeSK7Mjw=
+modernc.org/sqlite v1.46.1 h1:eFJ2ShBLIEnUWlLy12raN0Z1plqmFX9Qe3rjQTKt6sU=
+modernc.org/sqlite v1.46.1/go.mod h1:CzbrU2lSB1DKUusvwGz7rqEKIq+NUd8GWuBBZDs9/nA=
@@ -0,0 +1,82 @@
+package auth
+
+import (
+	"database/sql"
+	"errors"
+	"fmt"
+	"time"
+
+	"github.com/golang-jwt/jwt/v5"
+	"golang.org/x/crypto/bcrypt"
+)
+
+var ErrInvalidCredentials = errors.New("invalid credentials")
+
+type Claims struct {
+	VolunteerID int64  `json:"volunteer_id"`
+	Role        string `json:"role"`
+	jwt.RegisteredClaims
+}
+
+type Service struct {
+	db        *sql.DB
+	jwtSecret []byte
+}
+
+func NewService(db *sql.DB, secret string) *Service {
+	return &Service{db: db, jwtSecret: []byte(secret)}
+}
+
+func (s *Service) Login(email, password string) (string, error) {
+	var id int64
+	var hash, role string
+	err := s.db.QueryRow(
+		`SELECT id, password, role FROM volunteers WHERE email = ? AND active = 1`,
+		email,
+	).Scan(&id, &hash, &role)
+	if errors.Is(err, sql.ErrNoRows) {
+		return "", ErrInvalidCredentials
+	}
+	if err != nil {
+		return "", fmt.Errorf("query volunteer: %w", err)
+	}
+	if err := bcrypt.CompareHashAndPassword([]byte(hash), []byte(password)); err != nil {
+		return "", ErrInvalidCredentials
+	}
+	return s.issueToken(id, role)
+}
+
+func (s *Service) issueToken(volunteerID int64, role string) (string, error) {
+	claims := Claims{
+		VolunteerID: volunteerID,
+		Role:        role,
+		RegisteredClaims: jwt.RegisteredClaims{
+			ExpiresAt: jwt.NewNumericDate(time.Now().Add(24 * time.Hour)),
+			IssuedAt:  jwt.NewNumericDate(time.Now()),
+		},
+	}
+	token := jwt.NewWithClaims(jwt.SigningMethodHS256, claims)
+	return token.SignedString(s.jwtSecret)
+}
+
+func (s *Service) Parse(tokenStr string) (*Claims, error) {
+	token, err := jwt.ParseWithClaims(tokenStr, &Claims{}, func(t *jwt.Token) (any, error) {
+		if _, ok := t.Method.(*jwt.SigningMethodHMAC); !ok {
+			return nil, fmt.Errorf("unexpected signing method")
+		}
+		return s.jwtSecret, nil
+	})
+	if err != nil {
+		return nil, err
+	}
+	claims, ok := token.Claims.(*Claims)
+	if !ok || !token.Valid {
+		return nil, errors.New("invalid token")
+	}
+	return claims, nil
+}
+
+func HashPassword(password string) (string, error) {
+	b, err := bcrypt.GenerateFromPassword([]byte(password), bcrypt.DefaultCost)
+	return string(b), err
+}
@@ -0,0 +1,148 @@
+package checkin
+
+import (
+	"database/sql"
+	"errors"
+	"fmt"
+	"time"
+)
+
+type CheckIn struct {
+	ID             int64      `json:"id"`
+	VolunteerID    int64      `json:"volunteer_id"`
+	ScheduleID     *int64     `json:"schedule_id,omitempty"`
+	CheckedInAt    time.Time  `json:"checked_in_at"`
+	CheckedOutAt   *time.Time `json:"checked_out_at,omitempty"`
+	Notes          string     `json:"notes,omitempty"`
+}
+
+type CheckInInput struct {
+	ScheduleID *int64 `json:"schedule_id"`
+	Notes      string `json:"notes"`
+}
+
+type CheckOutInput struct {
+	Notes string `json:"notes"`
+}
+
+type Store struct {
+	db *sql.DB
+}
+
+func NewStore(db *sql.DB) *Store {
+	return &Store{db: db}
+}
+
+func (s *Store) CheckIn(volunteerID int64, in CheckInInput) (*CheckIn, error) {
+	// Ensure no active check-in exists
+	var count int
+	s.db.QueryRow(
+		`SELECT COUNT(*) FROM checkins WHERE volunteer_id = ? AND checked_out_at IS NULL`, volunteerID,
+	).Scan(&count)
+	if count > 0 {
+		return nil, fmt.Errorf("already checked in")
+	}
+
+	res, err := s.db.Exec(
+		`INSERT INTO checkins (volunteer_id, schedule_id, notes) VALUES (?, ?, ?)`,
+		volunteerID, in.ScheduleID, in.Notes,
+	)
+	if err != nil {
+		return nil, fmt.Errorf("insert checkin: %w", err)
+	}
+	id, _ := res.LastInsertId()
+	return s.GetByID(id)
+}
+
+func (s *Store) CheckOut(volunteerID int64, in CheckOutInput) (*CheckIn, error) {
+	var id int64
+	err := s.db.QueryRow(
+		`SELECT id FROM checkins WHERE volunteer_id = ? AND checked_out_at IS NULL ORDER BY checked_in_at DESC LIMIT 1`,
+		volunteerID,
+	).Scan(&id)
+	if errors.Is(err, sql.ErrNoRows) {
+		return nil, fmt.Errorf("not checked in")
+	}
+	if err != nil {
+		return nil, fmt.Errorf("find active checkin: %w", err)
+	}
+	_, err = s.db.Exec(
+		`UPDATE checkins SET checked_out_at=datetime('now'), notes=COALESCE(NULLIF(?, ''), notes) WHERE id=?`,
+		in.Notes, id,
+	)
+	if err != nil {
+		return nil, fmt.Errorf("checkout: %w", err)
+	}
+	return s.GetByID(id)
+}
+
+func (s *Store) GetByID(id int64) (*CheckIn, error) {
+	ci := &CheckIn{}
+	var checkedInAt string
+	var checkedOutAt sql.NullString
+	var scheduleID sql.NullInt64
+	var notes sql.NullString
+
+	err := s.db.QueryRow(
+		`SELECT id, volunteer_id, schedule_id, checked_in_at, checked_out_at, notes FROM checkins WHERE id = ?`, id,
+	).Scan(&ci.ID, &ci.VolunteerID, &scheduleID, &checkedInAt, &checkedOutAt, &notes)
+	if errors.Is(err, sql.ErrNoRows) {
+		return nil, nil
+	}
+	if err != nil {
+		return nil, fmt.Errorf("get checkin: %w", err)
+	}
+	ci.CheckedInAt, _ = time.Parse("2006-01-02 15:04:05", checkedInAt)
+	if checkedOutAt.Valid {
+		t, _ := time.Parse("2006-01-02 15:04:05", checkedOutAt.String)
+		ci.CheckedOutAt = &t
+	}
+	if scheduleID.Valid {
+		ci.ScheduleID = &scheduleID.Int64
+	}
+	if notes.Valid {
+		ci.Notes = notes.String
+	}
+	return ci, nil
+}
+
+func (s *Store) History(volunteerID int64) ([]CheckIn, error) {
+	query := `SELECT id, volunteer_id, schedule_id, checked_in_at, checked_out_at, notes FROM checkins`
+	args := []any{}
+	if volunteerID > 0 {
+		query += ` WHERE volunteer_id = ?`
+		args = append(args, volunteerID)
+	}
+	query += ` ORDER BY checked_in_at DESC`
+
+	rows, err := s.db.Query(query, args...)
+	if err != nil {
+		return nil, fmt.Errorf("list checkins: %w", err)
+	}
+	defer rows.Close()
+
+	var checkins []CheckIn
+	for rows.Next() {
+		var ci CheckIn
+		var checkedInAt string
+		var checkedOutAt sql.NullString
+		var scheduleID sql.NullInt64
+		var notes sql.NullString
+		if err := rows.Scan(&ci.ID, &ci.VolunteerID, &scheduleID, &checkedInAt, &checkedOutAt, &notes); err != nil {
+			return nil, err
+		}
+		ci.CheckedInAt, _ = time.Parse("2006-01-02 15:04:05", checkedInAt)
+		if checkedOutAt.Valid {
+			t, _ := time.Parse("2006-01-02 15:04:05", checkedOutAt.String)
+			ci.CheckedOutAt = &t
+		}
+		if scheduleID.Valid {
+			ci.ScheduleID = &scheduleID.Int64
+		}
+		if notes.Valid {
+			ci.Notes = notes.String
+		}
+		checkins = append(checkins, ci)
+	}
+	return checkins, rows.Err()
+}
@@ -0,0 +1,64 @@
+package checkin
+
+import (
+	"encoding/json"
+	"net/http"
+
+	"git.unsupervised.ca/walkies/internal/respond"
+	"git.unsupervised.ca/walkies/internal/server/middleware"
+)
+
+type Handler struct {
+	store *Store
+}
+
+func NewHandler(store *Store) *Handler {
+	return &Handler{store: store}
+}
+
+// POST /api/v1/checkin
+func (h *Handler) CheckIn(w http.ResponseWriter, r *http.Request) {
+	claims := middleware.ClaimsFromContext(r.Context())
+	var in CheckInInput
+	if err := json.NewDecoder(r.Body).Decode(&in); err != nil {
+		respond.Error(w, http.StatusBadRequest, "invalid request body")
+		return
+	}
+	ci, err := h.store.CheckIn(claims.VolunteerID, in)
+	if err != nil {
+		respond.Error(w, http.StatusConflict, err.Error())
+		return
+	}
+	respond.JSON(w, http.StatusCreated, ci)
+}
+
+// POST /api/v1/checkout
+func (h *Handler) CheckOut(w http.ResponseWriter, r *http.Request) {
+	claims := middleware.ClaimsFromContext(r.Context())
+	var in CheckOutInput
+	json.NewDecoder(r.Body).Decode(&in)
+	ci, err := h.store.CheckOut(claims.VolunteerID, in)
+	if err != nil {
+		respond.Error(w, http.StatusConflict, err.Error())
+		return
+	}
+	respond.JSON(w, http.StatusOK, ci)
+}
+
+// GET /api/v1/checkin/history
+func (h *Handler) History(w http.ResponseWriter, r *http.Request) {
+	claims := middleware.ClaimsFromContext(r.Context())
+	volunteerID := int64(0)
+	if claims.Role != "admin" {
+		volunteerID = claims.VolunteerID
+	}
+	history, err := h.store.History(volunteerID)
+	if err != nil {
+		respond.Error(w, http.StatusInternalServerError, "could not get history")
+		return
+	}
+	if history == nil {
+		history = []CheckIn{}
+	}
+	respond.JSON(w, http.StatusOK, history)
+}
@@ -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
+}
@@ -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'))
+);
+`
@@ -0,0 +1,52 @@
+package notification
+
+import (
+	"net/http"
+	"strconv"
+
+	"github.com/go-chi/chi/v5"
+	"git.unsupervised.ca/walkies/internal/respond"
+	"git.unsupervised.ca/walkies/internal/server/middleware"
+)
+
+type Handler struct {
+	store *Store
+}
+
+func NewHandler(store *Store) *Handler {
+	return &Handler{store: store}
+}
+
+// GET /api/v1/notifications
+func (h *Handler) List(w http.ResponseWriter, r *http.Request) {
+	claims := middleware.ClaimsFromContext(r.Context())
+	notifications, err := h.store.ListForVolunteer(claims.VolunteerID)
+	if err != nil {
+		respond.Error(w, http.StatusInternalServerError, "could not list notifications")
+		return
+	}
+	if notifications == nil {
+		notifications = []Notification{}
+	}
+	respond.JSON(w, http.StatusOK, notifications)
+}
+
+// PUT /api/v1/notifications/{id}/read
+func (h *Handler) MarkRead(w http.ResponseWriter, r *http.Request) {
+	claims := middleware.ClaimsFromContext(r.Context())
+	id, err := strconv.ParseInt(chi.URLParam(r, "id"), 10, 64)
+	if err != nil {
+		respond.Error(w, http.StatusBadRequest, "invalid id")
+		return
+	}
+	n, err := h.store.MarkRead(id, claims.VolunteerID)
+	if err != nil {
+		respond.Error(w, http.StatusInternalServerError, "could not mark notification as read")
+		return
+	}
+	if n == nil {
+		respond.Error(w, http.StatusNotFound, "notification not found")
+		return
+	}
+	respond.JSON(w, http.StatusOK, n)
+}
@@ -0,0 +1,90 @@
+package notification
+
+import (
+	"database/sql"
+	"errors"
+	"fmt"
+	"time"
+)
+
+type Notification struct {
+	ID          int64     `json:"id"`
+	VolunteerID int64     `json:"volunteer_id"`
+	Message     string    `json:"message"`
+	Read        bool      `json:"read"`
+	CreatedAt   time.Time `json:"created_at"`
+}
+
+type Store struct {
+	db *sql.DB
+}
+
+func NewStore(db *sql.DB) *Store {
+	return &Store{db: db}
+}
+
+func (s *Store) Create(volunteerID int64, message string) (*Notification, error) {
+	res, err := s.db.Exec(
+		`INSERT INTO notifications (volunteer_id, message) VALUES (?, ?)`,
+		volunteerID, message,
+	)
+	if err != nil {
+		return nil, fmt.Errorf("insert notification: %w", err)
+	}
+	id, _ := res.LastInsertId()
+	return s.GetByID(id)
+}
+
+func (s *Store) GetByID(id int64) (*Notification, error) {
+	n := &Notification{}
+	var createdAt string
+	err := s.db.QueryRow(
+		`SELECT id, volunteer_id, message, read, created_at FROM notifications WHERE id = ?`, id,
+	).Scan(&n.ID, &n.VolunteerID, &n.Message, &n.Read, &createdAt)
+	if errors.Is(err, sql.ErrNoRows) {
+		return nil, nil
+	}
+	if err != nil {
+		return nil, fmt.Errorf("get notification: %w", err)
+	}
+	n.CreatedAt, _ = time.Parse("2006-01-02 15:04:05", createdAt)
+	return n, nil
+}
+
+func (s *Store) ListForVolunteer(volunteerID int64) ([]Notification, error) {
+	rows, err := s.db.Query(
+		`SELECT id, volunteer_id, message, read, created_at FROM notifications WHERE volunteer_id = ? ORDER BY created_at DESC`,
+		volunteerID,
+	)
+	if err != nil {
+		return nil, fmt.Errorf("list notifications: %w", err)
+	}
+	defer rows.Close()
+
+	var notifications []Notification
+	for rows.Next() {
+		var n Notification
+		var createdAt string
+		if err := rows.Scan(&n.ID, &n.VolunteerID, &n.Message, &n.Read, &createdAt); err != nil {
+			return nil, err
+		}
+		n.CreatedAt, _ = time.Parse("2006-01-02 15:04:05", createdAt)
+		notifications = append(notifications, n)
+	}
+	return notifications, rows.Err()
+}
+
+func (s *Store) MarkRead(id, volunteerID int64) (*Notification, error) {
+	result, err := s.db.Exec(
+		`UPDATE notifications SET read = 1 WHERE id = ? AND volunteer_id = ?`,
+		id, volunteerID,
+	)
+	if err != nil {
+		return nil, fmt.Errorf("mark read: %w", err)
+	}
+	rows, _ := result.RowsAffected()
+	if rows == 0 {
+		return nil, nil
+	}
+	return s.GetByID(id)
+}
@@ -0,0 +1,16 @@
+package respond
+
+import (
+	"encoding/json"
+	"net/http"
+)
+
+func JSON(w http.ResponseWriter, status int, v any) {
+	w.Header().Set("Content-Type", "application/json")
+	w.WriteHeader(status)
+	json.NewEncoder(w).Encode(v)
+}
+
+func Error(w http.ResponseWriter, status int, msg string) {
+	JSON(w, status, map[string]string{"error": msg})
+}
@@ -0,0 +1,98 @@
+package schedule
+
+import (
+	"encoding/json"
+	"net/http"
+	"strconv"
+
+	"github.com/go-chi/chi/v5"
+	"git.unsupervised.ca/walkies/internal/respond"
+	"git.unsupervised.ca/walkies/internal/server/middleware"
+)
+
+type Handler struct {
+	store *Store
+}
+
+func NewHandler(store *Store) *Handler {
+	return &Handler{store: store}
+}
+
+// GET /api/v1/schedules
+func (h *Handler) List(w http.ResponseWriter, r *http.Request) {
+	claims := middleware.ClaimsFromContext(r.Context())
+	volunteerID := int64(0)
+	if claims.Role != "admin" {
+		volunteerID = claims.VolunteerID
+	}
+	schedules, err := h.store.List(volunteerID)
+	if err != nil {
+		respond.Error(w, http.StatusInternalServerError, "could not list schedules")
+		return
+	}
+	if schedules == nil {
+		schedules = []Schedule{}
+	}
+	respond.JSON(w, http.StatusOK, schedules)
+}
+
+// POST /api/v1/schedules
+func (h *Handler) Create(w http.ResponseWriter, r *http.Request) {
+	claims := middleware.ClaimsFromContext(r.Context())
+	var in CreateInput
+	if err := json.NewDecoder(r.Body).Decode(&in); err != nil {
+		respond.Error(w, http.StatusBadRequest, "invalid request body")
+		return
+	}
+	if claims.Role != "admin" {
+		in.VolunteerID = claims.VolunteerID
+	}
+	if in.Title == "" || in.StartsAt == "" || in.EndsAt == "" {
+		respond.Error(w, http.StatusBadRequest, "title, starts_at, and ends_at are required")
+		return
+	}
+	sc, err := h.store.Create(in)
+	if err != nil {
+		respond.Error(w, http.StatusInternalServerError, "could not create schedule")
+		return
+	}
+	respond.JSON(w, http.StatusCreated, sc)
+}
+
+// PUT /api/v1/schedules/{id}
+func (h *Handler) Update(w http.ResponseWriter, r *http.Request) {
+	id, err := strconv.ParseInt(chi.URLParam(r, "id"), 10, 64)
+	if err != nil {
+		respond.Error(w, http.StatusBadRequest, "invalid id")
+		return
+	}
+	var in UpdateInput
+	if err := json.NewDecoder(r.Body).Decode(&in); err != nil {
+		respond.Error(w, http.StatusBadRequest, "invalid request body")
+		return
+	}
+	sc, err := h.store.Update(id, in)
+	if err != nil {
+		respond.Error(w, http.StatusInternalServerError, "could not update schedule")
+		return
+	}
+	if sc == nil {
+		respond.Error(w, http.StatusNotFound, "schedule not found")
+		return
+	}
+	respond.JSON(w, http.StatusOK, sc)
+}
+
+// DELETE /api/v1/schedules/{id}
+func (h *Handler) Delete(w http.ResponseWriter, r *http.Request) {
+	id, err := strconv.ParseInt(chi.URLParam(r, "id"), 10, 64)
+	if err != nil {
+		respond.Error(w, http.StatusBadRequest, "invalid id")
+		return
+	}
+	if err := h.store.Delete(id); err != nil {
+		respond.Error(w, http.StatusInternalServerError, "could not delete schedule")
+		return
+	}
+	w.WriteHeader(http.StatusNoContent)
+}
@@ -0,0 +1,151 @@
+package schedule
+
+import (
+	"database/sql"
+	"errors"
+	"fmt"
+	"time"
+)
+
+type Schedule struct {
+	ID          int64     `json:"id"`
+	VolunteerID int64     `json:"volunteer_id"`
+	Title       string    `json:"title"`
+	StartsAt    time.Time `json:"starts_at"`
+	EndsAt      time.Time `json:"ends_at"`
+	Notes       string    `json:"notes,omitempty"`
+	CreatedAt   time.Time `json:"created_at"`
+	UpdatedAt   time.Time `json:"updated_at"`
+}
+
+type CreateInput struct {
+	VolunteerID int64  `json:"volunteer_id"`
+	Title       string `json:"title"`
+	StartsAt    string `json:"starts_at"`
+	EndsAt      string `json:"ends_at"`
+	Notes       string `json:"notes"`
+}
+
+type UpdateInput struct {
+	Title    *string `json:"title"`
+	StartsAt *string `json:"starts_at"`
+	EndsAt   *string `json:"ends_at"`
+	Notes    *string `json:"notes"`
+}
+
+const timeLayout = "2006-01-02T15:04:05Z"
+
+type Store struct {
+	db *sql.DB
+}
+
+func NewStore(db *sql.DB) *Store {
+	return &Store{db: db}
+}
+
+func (s *Store) Create(in CreateInput) (*Schedule, error) {
+	res, err := s.db.Exec(
+		`INSERT INTO schedules (volunteer_id, title, starts_at, ends_at, notes) VALUES (?, ?, ?, ?, ?)`,
+		in.VolunteerID, in.Title, in.StartsAt, in.EndsAt, in.Notes,
+	)
+	if err != nil {
+		return nil, fmt.Errorf("insert schedule: %w", err)
+	}
+	id, _ := res.LastInsertId()
+	return s.GetByID(id)
+}
+
+func (s *Store) GetByID(id int64) (*Schedule, error) {
+	sc := &Schedule{}
+	var startsAt, endsAt, createdAt, updatedAt string
+	var notes sql.NullString
+	err := s.db.QueryRow(
+		`SELECT id, volunteer_id, title, starts_at, ends_at, notes, created_at, updated_at FROM schedules WHERE id = ?`, id,
+	).Scan(&sc.ID, &sc.VolunteerID, &sc.Title, &startsAt, &endsAt, &notes, &createdAt, &updatedAt)
+	if errors.Is(err, sql.ErrNoRows) {
+		return nil, nil
+	}
+	if err != nil {
+		return nil, fmt.Errorf("get schedule: %w", err)
+	}
+	sc.StartsAt, _ = time.Parse("2006-01-02 15:04:05", startsAt)
+	sc.EndsAt, _ = time.Parse("2006-01-02 15:04:05", endsAt)
+	sc.CreatedAt, _ = time.Parse("2006-01-02 15:04:05", createdAt)
+	sc.UpdatedAt, _ = time.Parse("2006-01-02 15:04:05", updatedAt)
+	if notes.Valid {
+		sc.Notes = notes.String
+	}
+	return sc, nil
+}
+
+func (s *Store) List(volunteerID int64) ([]Schedule, error) {
+	query := `SELECT id, volunteer_id, title, starts_at, ends_at, notes, created_at, updated_at FROM schedules`
+	args := []any{}
+	if volunteerID > 0 {
+		query += ` WHERE volunteer_id = ?`
+		args = append(args, volunteerID)
+	}
+	query += ` ORDER BY starts_at`
+
+	rows, err := s.db.Query(query, args...)
+	if err != nil {
+		return nil, fmt.Errorf("list schedules: %w", err)
+	}
+	defer rows.Close()
+
+	var schedules []Schedule
+	for rows.Next() {
+		var sc Schedule
+		var startsAt, endsAt, createdAt, updatedAt string
+		var notes sql.NullString
+		if err := rows.Scan(&sc.ID, &sc.VolunteerID, &sc.Title, &startsAt, &endsAt, &notes, &createdAt, &updatedAt); err != nil {
+			return nil, err
+		}
+		sc.StartsAt, _ = time.Parse("2006-01-02 15:04:05", startsAt)
+		sc.EndsAt, _ = time.Parse("2006-01-02 15:04:05", endsAt)
+		sc.CreatedAt, _ = time.Parse("2006-01-02 15:04:05", createdAt)
+		sc.UpdatedAt, _ = time.Parse("2006-01-02 15:04:05", updatedAt)
+		if notes.Valid {
+			sc.Notes = notes.String
+		}
+		schedules = append(schedules, sc)
+	}
+	return schedules, rows.Err()
+}
+
+func (s *Store) Update(id int64, in UpdateInput) (*Schedule, error) {
+	sc, err := s.GetByID(id)
+	if err != nil || sc == nil {
+		return sc, err
+	}
+	title := sc.Title
+	startsAt := sc.StartsAt.Format("2006-01-02 15:04:05")
+	endsAt := sc.EndsAt.Format("2006-01-02 15:04:05")
+	notes := sc.Notes
+
+	if in.Title != nil {
+		title = *in.Title
+	}
+	if in.StartsAt != nil {
+		startsAt = *in.StartsAt
+	}
+	if in.EndsAt != nil {
+		endsAt = *in.EndsAt
+	}
+	if in.Notes != nil {
+		notes = *in.Notes
+	}
+	_, err = s.db.Exec(
+		`UPDATE schedules SET title=?, starts_at=?, ends_at=?, notes=?, updated_at=datetime('now') WHERE id=?`,
+		title, startsAt, endsAt, notes, id,
+	)
+	if err != nil {
+		return nil, fmt.Errorf("update schedule: %w", err)
+	}
+	return s.GetByID(id)
+}
+
+func (s *Store) Delete(id int64) error {
+	_, err := s.db.Exec(`DELETE FROM schedules WHERE id = ?`, id)
+	return err
+}
@@ -0,0 +1,49 @@
+package middleware
+
+import (
+	"context"
+	"net/http"
+	"strings"
+
+	"git.unsupervised.ca/walkies/internal/auth"
+	"git.unsupervised.ca/walkies/internal/respond"
+)
+
+type contextKey string
+
+const claimsKey contextKey = "claims"
+
+func Authenticate(authSvc *auth.Service) func(http.Handler) http.Handler {
+	return func(next http.Handler) http.Handler {
+		return http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
+			header := r.Header.Get("Authorization")
+			if !strings.HasPrefix(header, "Bearer ") {
+				respond.Error(w, http.StatusUnauthorized, "missing or invalid authorization header")
+				return
+			}
+			claims, err := authSvc.Parse(strings.TrimPrefix(header, "Bearer "))
+			if err != nil {
+				respond.Error(w, http.StatusUnauthorized, "invalid token")
+				return
+			}
+			ctx := context.WithValue(r.Context(), claimsKey, claims)
+			next.ServeHTTP(w, r.WithContext(ctx))
+		})
+	}
+}
+
+func RequireAdmin(next http.Handler) http.Handler {
+	return http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
+		claims := ClaimsFromContext(r.Context())
+		if claims == nil || claims.Role != "admin" {
+			respond.Error(w, http.StatusForbidden, "admin access required")
+			return
+		}
+		next.ServeHTTP(w, r)
+	})
+}
+
+func ClaimsFromContext(ctx context.Context) *auth.Claims {
+	claims, _ := ctx.Value(claimsKey).(*auth.Claims)
+	return claims
+}
@@ -0,0 +1,83 @@
+package server
+
+import (
+	"database/sql"
+	"net/http"
+
+	"github.com/go-chi/chi/v5"
+	chimiddleware "github.com/go-chi/chi/v5/middleware"
+
+	"git.unsupervised.ca/walkies/internal/auth"
+	"git.unsupervised.ca/walkies/internal/checkin"
+	"git.unsupervised.ca/walkies/internal/notification"
+	"git.unsupervised.ca/walkies/internal/schedule"
+	"git.unsupervised.ca/walkies/internal/server/middleware"
+	"git.unsupervised.ca/walkies/internal/timeoff"
+	"git.unsupervised.ca/walkies/internal/volunteer"
+)
+
+func New(db *sql.DB, jwtSecret string, staticDir string) http.Handler {
+	authSvc := auth.NewService(db, jwtSecret)
+
+	volunteerStore := volunteer.NewStore(db)
+	volunteerHandler := volunteer.NewHandler(volunteerStore, authSvc)
+
+	scheduleStore := schedule.NewStore(db)
+	scheduleHandler := schedule.NewHandler(scheduleStore)
+
+	timeoffStore := timeoff.NewStore(db)
+	timeoffHandler := timeoff.NewHandler(timeoffStore)
+
+	checkinStore := checkin.NewStore(db)
+	checkinHandler := checkin.NewHandler(checkinStore)
+
+	notificationStore := notification.NewStore(db)
+	notificationHandler := notification.NewHandler(notificationStore)
+
+	r := chi.NewRouter()
+	r.Use(chimiddleware.Logger)
+	r.Use(chimiddleware.Recoverer)
+	r.Use(chimiddleware.RealIP)
+
+	// API routes
+	r.Route("/api/v1", func(r chi.Router) {
+		// Public auth endpoints
+		r.Post("/auth/register", volunteerHandler.Register)
+		r.Post("/auth/login", volunteerHandler.Login)
+
+		// Protected routes
+		r.Group(func(r chi.Router) {
+			r.Use(middleware.Authenticate(authSvc))
+
+			// Volunteers
+			r.Get("/volunteers", volunteerHandler.List)
+			r.Get("/volunteers/{id}", volunteerHandler.Get)
+			r.With(middleware.RequireAdmin).Put("/volunteers/{id}", volunteerHandler.Update)
+
+			// Schedules
+			r.Get("/schedules", scheduleHandler.List)
+			r.Post("/schedules", scheduleHandler.Create)
+			r.With(middleware.RequireAdmin).Put("/schedules/{id}", scheduleHandler.Update)
+			r.With(middleware.RequireAdmin).Delete("/schedules/{id}", scheduleHandler.Delete)
+
+			// Time off
+			r.Get("/timeoff", timeoffHandler.List)
+			r.Post("/timeoff", timeoffHandler.Create)
+			r.With(middleware.RequireAdmin).Put("/timeoff/{id}/review", timeoffHandler.Review)
+
+			// Check-in / check-out
+			r.Post("/checkin", checkinHandler.CheckIn)
+			r.Post("/checkout", checkinHandler.CheckOut)
+			r.Get("/checkin/history", checkinHandler.History)
+
+			// Notifications
+			r.Get("/notifications", notificationHandler.List)
+			r.Put("/notifications/{id}/read", notificationHandler.MarkRead)
+		})
+	})
+
+	// Serve static React app for all other routes
+	r.Handle("/*", http.FileServer(http.Dir(staticDir)))
+
+	return r
+}
@@ -0,0 +1,86 @@
+package timeoff
+
+import (
+	"encoding/json"
+	"net/http"
+	"strconv"
+
+	"github.com/go-chi/chi/v5"
+	"git.unsupervised.ca/walkies/internal/respond"
+	"git.unsupervised.ca/walkies/internal/server/middleware"
+)
+
+type Handler struct {
+	store *Store
+}
+
+func NewHandler(store *Store) *Handler {
+	return &Handler{store: store}
+}
+
+// GET /api/v1/timeoff
+func (h *Handler) List(w http.ResponseWriter, r *http.Request) {
+	claims := middleware.ClaimsFromContext(r.Context())
+	volunteerID := int64(0)
+	if claims.Role != "admin" {
+		volunteerID = claims.VolunteerID
+	}
+	requests, err := h.store.List(volunteerID)
+	if err != nil {
+		respond.Error(w, http.StatusInternalServerError, "could not list time off requests")
+		return
+	}
+	if requests == nil {
+		requests = []Request{}
+	}
+	respond.JSON(w, http.StatusOK, requests)
+}
+
+// POST /api/v1/timeoff
+func (h *Handler) Create(w http.ResponseWriter, r *http.Request) {
+	claims := middleware.ClaimsFromContext(r.Context())
+	var in CreateInput
+	if err := json.NewDecoder(r.Body).Decode(&in); err != nil {
+		respond.Error(w, http.StatusBadRequest, "invalid request body")
+		return
+	}
+	if in.StartsAt == "" || in.EndsAt == "" {
+		respond.Error(w, http.StatusBadRequest, "starts_at and ends_at are required")
+		return
+	}
+	req, err := h.store.Create(claims.VolunteerID, in)
+	if err != nil {
+		respond.Error(w, http.StatusInternalServerError, "could not create time off request")
+		return
+	}
+	respond.JSON(w, http.StatusCreated, req)
+}
+
+// PUT /api/v1/timeoff/{id}/review
+func (h *Handler) Review(w http.ResponseWriter, r *http.Request) {
+	claims := middleware.ClaimsFromContext(r.Context())
+	id, err := strconv.ParseInt(chi.URLParam(r, "id"), 10, 64)
+	if err != nil {
+		respond.Error(w, http.StatusBadRequest, "invalid id")
+		return
+	}
+	var in ReviewInput
+	if err := json.NewDecoder(r.Body).Decode(&in); err != nil {
+		respond.Error(w, http.StatusBadRequest, "invalid request body")
+		return
+	}
+	if in.Status != "approved" && in.Status != "rejected" {
+		respond.Error(w, http.StatusBadRequest, "status must be 'approved' or 'rejected'")
+		return
+	}
+	req, err := h.store.Review(id, claims.VolunteerID, in.Status)
+	if err != nil {
+		respond.Error(w, http.StatusInternalServerError, "could not review time off request")
+		return
+	}
+	if req == nil {
+		respond.Error(w, http.StatusNotFound, "time off request not found")
+		return
+	}
+	respond.JSON(w, http.StatusOK, req)
+}
@@ -0,0 +1,140 @@
+package timeoff
+
+import (
+	"database/sql"
+	"errors"
+	"fmt"
+	"time"
+)
+
+type Request struct {
+	ID          int64      `json:"id"`
+	VolunteerID int64      `json:"volunteer_id"`
+	StartsAt    time.Time  `json:"starts_at"`
+	EndsAt      time.Time  `json:"ends_at"`
+	Reason      string     `json:"reason,omitempty"`
+	Status      string     `json:"status"`
+	ReviewedBy  *int64     `json:"reviewed_by,omitempty"`
+	ReviewedAt  *time.Time `json:"reviewed_at,omitempty"`
+	CreatedAt   time.Time  `json:"created_at"`
+	UpdatedAt   time.Time  `json:"updated_at"`
+}
+
+type CreateInput struct {
+	StartsAt string `json:"starts_at"`
+	EndsAt   string `json:"ends_at"`
+	Reason   string `json:"reason"`
+}
+
+type ReviewInput struct {
+	Status string `json:"status"` // "approved" | "rejected"
+}
+
+type Store struct {
+	db *sql.DB
+}
+
+func NewStore(db *sql.DB) *Store {
+	return &Store{db: db}
+}
+
+func (s *Store) Create(volunteerID int64, in CreateInput) (*Request, error) {
+	res, err := s.db.Exec(
+		`INSERT INTO time_off_requests (volunteer_id, starts_at, ends_at, reason) VALUES (?, ?, ?, ?)`,
+		volunteerID, in.StartsAt, in.EndsAt, in.Reason,
+	)
+	if err != nil {
+		return nil, fmt.Errorf("insert time off request: %w", err)
+	}
+	id, _ := res.LastInsertId()
+	return s.GetByID(id)
+}
+
+func (s *Store) GetByID(id int64) (*Request, error) {
+	req := &Request{}
+	var startsAt, endsAt, createdAt, updatedAt string
+	var reason sql.NullString
+	var reviewedBy sql.NullInt64
+	var reviewedAt sql.NullString
+
+	err := s.db.QueryRow(
+		`SELECT id, volunteer_id, starts_at, ends_at, reason, status, reviewed_by, reviewed_at, created_at, updated_at
+		 FROM time_off_requests WHERE id = ?`, id,
+	).Scan(&req.ID, &req.VolunteerID, &startsAt, &endsAt, &reason, &req.Status, &reviewedBy, &reviewedAt, &createdAt, &updatedAt)
+	if errors.Is(err, sql.ErrNoRows) {
+		return nil, nil
+	}
+	if err != nil {
+		return nil, fmt.Errorf("get time off request: %w", err)
+	}
+	req.StartsAt, _ = time.Parse("2006-01-02 15:04:05", startsAt)
+	req.EndsAt, _ = time.Parse("2006-01-02 15:04:05", endsAt)
+	req.CreatedAt, _ = time.Parse("2006-01-02 15:04:05", createdAt)
+	req.UpdatedAt, _ = time.Parse("2006-01-02 15:04:05", updatedAt)
+	if reason.Valid {
+		req.Reason = reason.String
+	}
+	if reviewedBy.Valid {
+		req.ReviewedBy = &reviewedBy.Int64
+	}
+	if reviewedAt.Valid {
+		t, _ := time.Parse("2006-01-02 15:04:05", reviewedAt.String)
+		req.ReviewedAt = &t
+	}
+	return req, nil
+}
+
+func (s *Store) List(volunteerID int64) ([]Request, error) {
+	query := `SELECT id, volunteer_id, starts_at, ends_at, reason, status, reviewed_by, reviewed_at, created_at, updated_at FROM time_off_requests`
+	args := []any{}
+	if volunteerID > 0 {
+		query += ` WHERE volunteer_id = ?`
+		args = append(args, volunteerID)
+	}
+	query += ` ORDER BY starts_at DESC`
+
+	rows, err := s.db.Query(query, args...)
+	if err != nil {
+		return nil, fmt.Errorf("list time off requests: %w", err)
+	}
+	defer rows.Close()
+
+	var requests []Request
+	for rows.Next() {
+		var req Request
+		var startsAt, endsAt, createdAt, updatedAt string
+		var reason sql.NullString
+		var reviewedBy sql.NullInt64
+		var reviewedAt sql.NullString
+		if err := rows.Scan(&req.ID, &req.VolunteerID, &startsAt, &endsAt, &reason, &req.Status, &reviewedBy, &reviewedAt, &createdAt, &updatedAt); err != nil {
+			return nil, err
+		}
+		req.StartsAt, _ = time.Parse("2006-01-02 15:04:05", startsAt)
+		req.EndsAt, _ = time.Parse("2006-01-02 15:04:05", endsAt)
+		req.CreatedAt, _ = time.Parse("2006-01-02 15:04:05", createdAt)
+		req.UpdatedAt, _ = time.Parse("2006-01-02 15:04:05", updatedAt)
+		if reason.Valid {
+			req.Reason = reason.String
+		}
+		if reviewedBy.Valid {
+			req.ReviewedBy = &reviewedBy.Int64
+		}
+		if reviewedAt.Valid {
+			t, _ := time.Parse("2006-01-02 15:04:05", reviewedAt.String)
+			req.ReviewedAt = &t
+		}
+		requests = append(requests, req)
+	}
+	return requests, rows.Err()
+}
+
+func (s *Store) Review(id, reviewerID int64, status string) (*Request, error) {
+	_, err := s.db.Exec(
+		`UPDATE time_off_requests SET status=?, reviewed_by=?, reviewed_at=datetime('now'), updated_at=datetime('now') WHERE id=?`,
+		status, reviewerID, id,
+	)
+	if err != nil {
+		return nil, fmt.Errorf("review time off request: %w", err)
+	}
+	return s.GetByID(id)
+}
@@ -0,0 +1,121 @@
+package volunteer
+
+import (
+	"encoding/json"
+	"net/http"
+	"strconv"
+
+	"github.com/go-chi/chi/v5"
+	"git.unsupervised.ca/walkies/internal/auth"
+	"git.unsupervised.ca/walkies/internal/respond"
+)
+
+type Handler struct {
+	store   *Store
+	authSvc *auth.Service
+}
+
+func NewHandler(store *Store, authSvc *auth.Service) *Handler {
+	return &Handler{store: store, authSvc: authSvc}
+}
+
+// POST /api/v1/auth/register
+func (h *Handler) Register(w http.ResponseWriter, r *http.Request) {
+	var in CreateInput
+	if err := json.NewDecoder(r.Body).Decode(&in); err != nil {
+		respond.Error(w, http.StatusBadRequest, "invalid request body")
+		return
+	}
+	if in.Name == "" || in.Email == "" || in.Password == "" {
+		respond.Error(w, http.StatusBadRequest, "name, email, and password are required")
+		return
+	}
+	if in.Role == "" {
+		in.Role = "volunteer"
+	}
+	hash, err := auth.HashPassword(in.Password)
+	if err != nil {
+		respond.Error(w, http.StatusInternalServerError, "could not hash password")
+		return
+	}
+	v, err := h.store.Create(in.Name, in.Email, hash, in.Role)
+	if err != nil {
+		respond.Error(w, http.StatusConflict, "email already in use")
+		return
+	}
+	respond.JSON(w, http.StatusCreated, v)
+}
+
+// POST /api/v1/auth/login
+func (h *Handler) Login(w http.ResponseWriter, r *http.Request) {
+	var body struct {
+		Email    string `json:"email"`
+		Password string `json:"password"`
+	}
+	if err := json.NewDecoder(r.Body).Decode(&body); err != nil {
+		respond.Error(w, http.StatusBadRequest, "invalid request body")
+		return
+	}
+	token, err := h.authSvc.Login(body.Email, body.Password)
+	if err != nil {
+		respond.Error(w, http.StatusUnauthorized, "invalid credentials")
+		return
+	}
+	respond.JSON(w, http.StatusOK, map[string]string{"token": token})
+}
+
+// GET /api/v1/volunteers
+func (h *Handler) List(w http.ResponseWriter, r *http.Request) {
+	volunteers, err := h.store.List(true)
+	if err != nil {
+		respond.Error(w, http.StatusInternalServerError, "could not list volunteers")
+		return
+	}
+	if volunteers == nil {
+		volunteers = []Volunteer{}
+	}
+	respond.JSON(w, http.StatusOK, volunteers)
+}
+
+// GET /api/v1/volunteers/{id}
+func (h *Handler) Get(w http.ResponseWriter, r *http.Request) {
+	id, err := strconv.ParseInt(chi.URLParam(r, "id"), 10, 64)
+	if err != nil {
+		respond.Error(w, http.StatusBadRequest, "invalid id")
+		return
+	}
+	v, err := h.store.GetByID(id)
+	if err != nil {
+		respond.Error(w, http.StatusInternalServerError, "could not get volunteer")
+		return
+	}
+	if v == nil {
+		respond.Error(w, http.StatusNotFound, "volunteer not found")
+		return
+	}
+	respond.JSON(w, http.StatusOK, v)
+}
+
+// PUT /api/v1/volunteers/{id}
+func (h *Handler) Update(w http.ResponseWriter, r *http.Request) {
+	id, err := strconv.ParseInt(chi.URLParam(r, "id"), 10, 64)
+	if err != nil {
+		respond.Error(w, http.StatusBadRequest, "invalid id")
+		return
+	}
+	var in UpdateInput
+	if err := json.NewDecoder(r.Body).Decode(&in); err != nil {
+		respond.Error(w, http.StatusBadRequest, "invalid request body")
+		return
+	}
+	v, err := h.store.Update(id, in)
+	if err != nil {
+		respond.Error(w, http.StatusInternalServerError, "could not update volunteer")
+		return
+	}
+	if v == nil {
+		respond.Error(w, http.StatusNotFound, "volunteer not found")
+		return
+	}
+	respond.JSON(w, http.StatusOK, v)
+}
@@ -0,0 +1,127 @@
+package volunteer
+
+import (
+	"database/sql"
+	"errors"
+	"fmt"
+	"time"
+)
+
+type Volunteer struct {
+	ID        int64     `json:"id"`
+	Name      string    `json:"name"`
+	Email     string    `json:"email"`
+	Role      string    `json:"role"`
+	Active    bool      `json:"active"`
+	CreatedAt time.Time `json:"created_at"`
+	UpdatedAt time.Time `json:"updated_at"`
+}
+
+type CreateInput struct {
+	Name     string `json:"name"`
+	Email    string `json:"email"`
+	Password string `json:"password"`
+	Role     string `json:"role"`
+}
+
+type UpdateInput struct {
+	Name   *string `json:"name"`
+	Email  *string `json:"email"`
+	Role   *string `json:"role"`
+	Active *bool   `json:"active"`
+}
+
+type Store struct {
+	db *sql.DB
+}
+
+func NewStore(db *sql.DB) *Store {
+	return &Store{db: db}
+}
+
+func (s *Store) Create(name, email, hashedPassword, role string) (*Volunteer, error) {
+	res, err := s.db.Exec(
+		`INSERT INTO volunteers (name, email, password, role) VALUES (?, ?, ?, ?)`,
+		name, email, hashedPassword, role,
+	)
+	if err != nil {
+		return nil, fmt.Errorf("insert volunteer: %w", err)
+	}
+	id, _ := res.LastInsertId()
+	return s.GetByID(id)
+}
+
+func (s *Store) GetByID(id int64) (*Volunteer, error) {
+	v := &Volunteer{}
+	var createdAt, updatedAt string
+	err := s.db.QueryRow(
+		`SELECT id, name, email, role, active, created_at, updated_at FROM volunteers WHERE id = ?`, id,
+	).Scan(&v.ID, &v.Name, &v.Email, &v.Role, &v.Active, &createdAt, &updatedAt)
+	if errors.Is(err, sql.ErrNoRows) {
+		return nil, nil
+	}
+	if err != nil {
+		return nil, fmt.Errorf("get volunteer: %w", err)
+	}
+	v.CreatedAt, _ = time.Parse("2006-01-02 15:04:05", createdAt)
+	v.UpdatedAt, _ = time.Parse("2006-01-02 15:04:05", updatedAt)
+	return v, nil
+}
+
+func (s *Store) List(activeOnly bool) ([]Volunteer, error) {
+	query := `SELECT id, name, email, role, active, created_at, updated_at FROM volunteers`
+	if activeOnly {
+		query += ` WHERE active = 1`
+	}
+	query += ` ORDER BY name`
+
+	rows, err := s.db.Query(query)
+	if err != nil {
+		return nil, fmt.Errorf("list volunteers: %w", err)
+	}
+	defer rows.Close()
+
+	var volunteers []Volunteer
+	for rows.Next() {
+		var v Volunteer
+		var createdAt, updatedAt string
+		if err := rows.Scan(&v.ID, &v.Name, &v.Email, &v.Role, &v.Active, &createdAt, &updatedAt); err != nil {
+			return nil, err
+		}
+		v.CreatedAt, _ = time.Parse("2006-01-02 15:04:05", createdAt)
+		v.UpdatedAt, _ = time.Parse("2006-01-02 15:04:05", updatedAt)
+		volunteers = append(volunteers, v)
+	}
+	return volunteers, rows.Err()
+}
+
+func (s *Store) Update(id int64, in UpdateInput) (*Volunteer, error) {
+	v, err := s.GetByID(id)
+	if err != nil || v == nil {
+		return v, err
+	}
+	if in.Name != nil {
+		v.Name = *in.Name
+	}
+	if in.Email != nil {
+		v.Email = *in.Email
+	}
+	if in.Role != nil {
+		v.Role = *in.Role
+	}
+	if in.Active != nil {
+		v.Active = *in.Active
+	}
+	activeInt := 0
+	if v.Active {
+		activeInt = 1
+	}
+	_, err = s.db.Exec(
+		`UPDATE volunteers SET name=?, email=?, role=?, active=?, updated_at=datetime('now') WHERE id=?`,
+		v.Name, v.Email, v.Role, activeInt, id,
+	)
+	if err != nil {
+		return nil, fmt.Errorf("update volunteer: %w", err)
+	}
+	return s.GetByID(id)
+}
@@ -0,0 +1,23 @@
+# See https://help.github.com/articles/ignoring-files/ for more about ignoring files.
+
+# dependencies
+/node_modules
+/.pnp
+.pnp.js
+
+# testing
+/coverage
+
+# production
+/build
+
+# misc
+.DS_Store
+.env.local
+.env.development.local
+.env.test.local
+.env.production.local
+
+npm-debug.log*
+yarn-debug.log*
+yarn-error.log*
@@ -0,0 +1,46 @@
+# Getting Started with Create React App
+
+This project was bootstrapped with [Create React App](https://github.com/facebook/create-react-app).
+
+## Available Scripts
+
+In the project directory, you can run:
+
+### `npm start`
+
+Runs the app in the development mode.\
+Open [http://localhost:3000](http://localhost:3000) to view it in the browser.
+
+The page will reload if you make edits.\
+You will also see any lint errors in the console.
+
+### `npm test`
+
+Launches the test runner in the interactive watch mode.\
+See the section about [running tests](https://facebook.github.io/create-react-app/docs/running-tests) for more information.
+
+### `npm run build`
+
+Builds the app for production to the `build` folder.\
+It correctly bundles React in production mode and optimizes the build for the best performance.
+
+The build is minified and the filenames include the hashes.\
+Your app is ready to be deployed!
+
+See the section about [deployment](https://facebook.github.io/create-react-app/docs/deployment) for more information.
+
+### `npm run eject`
+
+**Note: this is a one-way operation. Once you `eject`, you can’t go back!**
+
+If you aren’t satisfied with the build tool and configuration choices, you can `eject` at any time. This command will remove the single build dependency from your project.
+
+Instead, it will copy all the configuration files and the transitive dependencies (webpack, Babel, ESLint, etc) right into your project so you have full control over them. All of the commands except `eject` will still work, but they will point to the copied scripts so you can tweak them. At this point you’re on your own.
+
+You don’t have to ever use `eject`. The curated feature set is suitable for small and middle deployments, and you shouldn’t feel obligated to use this feature. However we understand that this tool wouldn’t be useful if you couldn’t customize it when you are ready for it.
+
+## Learn More
+
+You can learn more in the [Create React App documentation](https://facebook.github.io/create-react-app/docs/getting-started).
+
+To learn React, check out the [React documentation](https://reactjs.org/).
@@ -0,0 +1,46 @@
+{
+  "name": "web",
+  "version": "0.1.0",
+  "private": true,
+  "dependencies": {
+    "@testing-library/dom": "^10.4.1",
+    "@testing-library/jest-dom": "^6.9.1",
+    "@testing-library/react": "^16.3.2",
+    "@testing-library/user-event": "^13.5.0",
+    "@types/jest": "^27.5.2",
+    "@types/node": "^16.18.126",
+    "@types/react": "^19.2.14",
+    "@types/react-dom": "^19.2.3",
+    "@types/react-router-dom": "^5.3.3",
+    "react": "^19.2.4",
+    "react-dom": "^19.2.4",
+    "react-router-dom": "^7.13.1",
+    "react-scripts": "5.0.1",
+    "typescript": "^4.9.5",
+    "web-vitals": "^2.1.4"
+  },
+  "scripts": {
+    "start": "react-scripts start",
+    "build": "react-scripts build",
+    "test": "react-scripts test",
+    "eject": "react-scripts eject"
+  },
+  "eslintConfig": {
+    "extends": [
+      "react-app",
+      "react-app/jest"
+    ]
+  },
+  "browserslist": {
+    "production": [
+      ">0.2%",
+      "not dead",
+      "not op_mini all"
+    ],
+    "development": [
+      "last 1 chrome version",
+      "last 1 firefox version",
+      "last 1 safari version"
+    ]
+  }
+}
@@ -0,0 +1,43 @@
+<!DOCTYPE html>
+<html lang="en">
+  <head>
+    <meta charset="utf-8" />
+    <link rel="icon" href="%PUBLIC_URL%/favicon.ico" />
+    <meta name="viewport" content="width=device-width, initial-scale=1" />
+    <meta name="theme-color" content="#000000" />
+    <meta
+      name="description"
+      content="Web site created using create-react-app"
+    />
+    <link rel="apple-touch-icon" href="%PUBLIC_URL%/logo192.png" />
+    <!--
+      manifest.json provides metadata used when your web app is installed on a
+      user's mobile device or desktop. See https://developers.google.com/web/fundamentals/web-app-manifest/
+    -->
+    <link rel="manifest" href="%PUBLIC_URL%/manifest.json" />
+    <!--
+      Notice the use of %PUBLIC_URL% in the tags above.
+      It will be replaced with the URL of the `public` folder during the build.
+      Only files inside the `public` folder can be referenced from the HTML.
+
+      Unlike "/favicon.ico" or "favicon.ico", "%PUBLIC_URL%/favicon.ico" will
+      work correctly both with client-side routing and a non-root public URL.
+      Learn how to configure a non-root public URL by running `npm run build`.
+    -->
+    <title>React App</title>
+  </head>
+  <body>
+    <noscript>You need to enable JavaScript to run this app.</noscript>
+    <div id="root"></div>
+    <!--
+      This HTML file is a template.
+      If you open it directly in the browser, you will see an empty page.
+
+      You can add webfonts, meta tags, or analytics to this file.
+      The build step will place the bundled scripts into the <body> tag.
+
+      To begin the development, run `npm start` or `yarn start`.
+      To create a production bundle, use `npm run build` or `yarn build`.
+    -->
+  </body>
+</html>
@@ -0,0 +1,25 @@
+{
+  "short_name": "React App",
+  "name": "Create React App Sample",
+  "icons": [
+    {
+      "src": "favicon.ico",
+      "sizes": "64x64 32x32 24x24 16x16",
+      "type": "image/x-icon"
+    },
+    {
+      "src": "logo192.png",
+      "type": "image/png",
+      "sizes": "192x192"
+    },
+    {
+      "src": "logo512.png",
+      "type": "image/png",
+      "sizes": "512x512"
+    }
+  ],
+  "start_url": ".",
+  "display": "standalone",
+  "theme_color": "#000000",
+  "background_color": "#ffffff"
+}
@@ -0,0 +1,3 @@
+# https://www.robotstxt.org/robotstxt.html
+User-agent: *
+Disallow:
@@ -0,0 +1,135 @@
+*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
+
+body {
+  font-family: system-ui, -apple-system, sans-serif;
+  background: #f5f5f5;
+  color: #1a1a1a;
+  font-size: 15px;
+}
+
+/* Layout */
+.layout { display: flex; flex-direction: column; min-height: 100vh; }
+
+nav {
+  background: #2d6a4f;
+  color: white;
+  display: flex;
+  align-items: center;
+  gap: 1.5rem;
+  padding: 0.75rem 1.5rem;
+}
+
+.nav-brand { font-weight: 700; font-size: 1.2rem; margin-right: auto; }
+
+nav a {
+  color: rgba(255,255,255,0.85);
+  text-decoration: none;
+  font-size: 0.9rem;
+}
+nav a.active, nav a:hover { color: white; text-decoration: underline; }
+
+main { flex: 1; padding: 1.5rem; max-width: 1100px; margin: 0 auto; width: 100%; }
+
+/* Auth page */
+.auth-page {
+  min-height: 100vh;
+  display: flex;
+  flex-direction: column;
+  align-items: center;
+  justify-content: center;
+  gap: 1rem;
+}
+.auth-page h1 { font-size: 2rem; color: #2d6a4f; }
+.auth-page form {
+  background: white;
+  padding: 2rem;
+  border-radius: 8px;
+  box-shadow: 0 2px 8px rgba(0,0,0,0.1);
+  display: flex;
+  flex-direction: column;
+  gap: 1rem;
+  min-width: 320px;
+}
+
+/* Page */
+.page { display: flex; flex-direction: column; gap: 1.25rem; }
+.page-header { display: flex; align-items: center; justify-content: space-between; }
+.page h2 { font-size: 1.4rem; }
+
+/* Card */
+.card {
+  background: white;
+  border-radius: 8px;
+  padding: 1.25rem;
+  box-shadow: 0 1px 4px rgba(0,0,0,0.08);
+}
+.card h3 { margin-bottom: 0.75rem; font-size: 1rem; }
+
+/* Forms */
+label {
+  display: flex;
+  flex-direction: column;
+  gap: 0.3rem;
+  font-size: 0.875rem;
+  font-weight: 500;
+}
+input, textarea, select {
+  padding: 0.5rem 0.75rem;
+  border: 1px solid #d1d5db;
+  border-radius: 6px;
+  font-size: 0.95rem;
+  font-family: inherit;
+  width: 100%;
+}
+input:focus, textarea:focus { outline: 2px solid #2d6a4f; border-color: transparent; }
+textarea { resize: vertical; min-height: 80px; }
+
+/* Buttons */
+button {
+  padding: 0.5rem 1rem;
+  background: #2d6a4f;
+  color: white;
+  border: none;
+  border-radius: 6px;
+  cursor: pointer;
+  font-size: 0.9rem;
+}
+button:hover { background: #1e4d38; }
+.btn-small { padding: 0.25rem 0.6rem; font-size: 0.8rem; }
+.btn-danger { background: #dc2626; }
+.btn-danger:hover { background: #b91c1c; }
+.btn-link { background: none; color: rgba(255,255,255,0.85); padding: 0; font-size: 0.9rem; }
+.btn-link:hover { background: none; color: white; }
+
+/* Tables */
+table { width: 100%; border-collapse: collapse; font-size: 0.9rem; }
+th { text-align: left; padding: 0.5rem 0.75rem; background: #f9fafb; border-bottom: 2px solid #e5e7eb; }
+td { padding: 0.5rem 0.75rem; border-bottom: 1px solid #f0f0f0; }
+tr:last-child td { border-bottom: none; }
+
+/* Status badges */
+.status-pending { color: #b45309; background: #fef3c7; padding: 0.15rem 0.5rem; border-radius: 4px; font-size: 0.8rem; }
+.status-approved { color: #166534; background: #dcfce7; padding: 0.15rem 0.5rem; border-radius: 4px; font-size: 0.8rem; }
+.status-rejected { color: #991b1b; background: #fee2e2; padding: 0.15rem 0.5rem; border-radius: 4px; font-size: 0.8rem; }
+
+/* Notifications */
+ul { list-style: none; display: flex; flex-direction: column; gap: 0.4rem; }
+li { display: flex; justify-content: space-between; align-items: center; padding: 0.4rem 0; }
+li.unread { font-weight: 600; }
+li.read { color: #6b7280; }
+
+.badge {
+  display: inline-flex;
+  align-items: center;
+  justify-content: center;
+  background: #dc2626;
+  color: white;
+  border-radius: 9999px;
+  width: 1.25rem;
+  height: 1.25rem;
+  font-size: 0.75rem;
+  margin-left: 0.4rem;
+}
+
+/* Error */
+.error { color: #dc2626; font-size: 0.875rem; }
@@ -0,0 +1,9 @@
+import React from 'react';
+import { render, screen } from '@testing-library/react';
+import App from './App';
+
+test('renders learn react link', () => {
+  render(<App />);
+  const linkElement = screen.getByText(/learn react/i);
+  expect(linkElement).toBeInTheDocument();
+});
@@ -0,0 +1,60 @@
+import React from 'react';
+import { BrowserRouter, Routes, Route, NavLink, Navigate } from 'react-router-dom';
+import { AuthProvider, useAuth } from './auth';
+import Login from './pages/Login';
+import Dashboard from './pages/Dashboard';
+import Schedules from './pages/Schedules';
+import TimeOff from './pages/TimeOff';
+import Volunteers from './pages/Volunteers';
+import './App.css';
+
+function Nav() {
+  const { role, logout } = useAuth();
+  return (
+    <nav>
+      <span className="nav-brand">Walkies</span>
+      <NavLink to="/">Dashboard</NavLink>
+      <NavLink to="/schedules">Schedules</NavLink>
+      <NavLink to="/timeoff">Time Off</NavLink>
+      {role === 'admin' && <NavLink to="/volunteers">Volunteers</NavLink>}
+      <button className="btn-link" onClick={logout}>Sign Out</button>
+    </nav>
+  );
+}
+
+function ProtectedLayout() {
+  const { token } = useAuth();
+  if (!token) return <Navigate to="/login" replace />;
+  return (
+    <div className="layout">
+      <Nav />
+      <main>
+        <Routes>
+          <Route path="/" element={<Dashboard />} />
+          <Route path="/schedules" element={<Schedules />} />
+          <Route path="/timeoff" element={<TimeOff />} />
+          <Route path="/volunteers" element={<Volunteers />} />
+        </Routes>
+      </main>
+    </div>
+  );
+}
+
+function LoginRoute() {
+  const { token } = useAuth();
+  if (token) return <Navigate to="/" replace />;
+  return <Login />;
+}
+
+export default function App() {
+  return (
+    <AuthProvider>
+      <BrowserRouter>
+        <Routes>
+          <Route path="/login" element={<LoginRoute />} />
+          <Route path="/*" element={<ProtectedLayout />} />
+        </Routes>
+      </BrowserRouter>
+    </AuthProvider>
+  );
+}
@@ -0,0 +1,124 @@
+const BASE = '/api/v1';
+
+function getToken(): string | null {
+  return localStorage.getItem('token');
+}
+
+async function request<T>(method: string, path: string, body?: unknown): Promise<T> {
+  const headers: Record<string, string> = { 'Content-Type': 'application/json' };
+  const token = getToken();
+  if (token) headers['Authorization'] = `Bearer ${token}`;
+
+  const res = await fetch(`${BASE}${path}`, {
+    method,
+    headers,
+    body: body !== undefined ? JSON.stringify(body) : undefined,
+  });
+
+  if (res.status === 204) return undefined as T;
+  const data = await res.json();
+  if (!res.ok) throw new Error(data.error || 'Request failed');
+  return data as T;
+}
+
+export const api = {
+  // Auth
+  login: (email: string, password: string) =>
+    request<{ token: string }>('POST', '/auth/login', { email, password }),
+  register: (name: string, email: string, password: string, role = 'volunteer') =>
+    request<Volunteer>('POST', '/auth/register', { name, email, password, role }),
+
+  // Volunteers
+  listVolunteers: () => request<Volunteer[]>('GET', '/volunteers'),
+  getVolunteer: (id: number) => request<Volunteer>('GET', `/volunteers/${id}`),
+  updateVolunteer: (id: number, data: Partial<Volunteer>) =>
+    request<Volunteer>('PUT', `/volunteers/${id}`, data),
+
+  // Schedules
+  listSchedules: () => request<Schedule[]>('GET', '/schedules'),
+  createSchedule: (data: CreateScheduleInput) => request<Schedule>('POST', '/schedules', data),
+  updateSchedule: (id: number, data: Partial<CreateScheduleInput>) =>
+    request<Schedule>('PUT', `/schedules/${id}`, data),
+  deleteSchedule: (id: number) => request<void>('DELETE', `/schedules/${id}`),
+
+  // Time off
+  listTimeOff: () => request<TimeOffRequest[]>('GET', '/timeoff'),
+  createTimeOff: (data: CreateTimeOffInput) => request<TimeOffRequest>('POST', '/timeoff', data),
+  reviewTimeOff: (id: number, status: 'approved' | 'rejected') =>
+    request<TimeOffRequest>('PUT', `/timeoff/${id}/review`, { status }),
+
+  // Check-in / out
+  checkIn: (schedule_id?: number, notes?: string) =>
+    request<CheckIn>('POST', '/checkin', { schedule_id, notes }),
+  checkOut: (notes?: string) => request<CheckIn>('POST', '/checkout', { notes }),
+  getHistory: () => request<CheckIn[]>('GET', '/checkin/history'),
+
+  // Notifications
+  listNotifications: () => request<Notification[]>('GET', '/notifications'),
+  markRead: (id: number) => request<Notification>('PUT', `/notifications/${id}/read`, {}),
+};
+
+export interface Volunteer {
+  id: number;
+  name: string;
+  email: string;
+  role: 'admin' | 'volunteer';
+  active: boolean;
+  created_at: string;
+  updated_at: string;
+}
+
+export interface Schedule {
+  id: number;
+  volunteer_id: number;
+  title: string;
+  starts_at: string;
+  ends_at: string;
+  notes?: string;
+  created_at: string;
+  updated_at: string;
+}
+
+export interface CreateScheduleInput {
+  volunteer_id?: number;
+  title: string;
+  starts_at: string;
+  ends_at: string;
+  notes?: string;
+}
+
+export interface TimeOffRequest {
+  id: number;
+  volunteer_id: number;
+  starts_at: string;
+  ends_at: string;
+  reason?: string;
+  status: 'pending' | 'approved' | 'rejected';
+  reviewed_by?: number;
+  reviewed_at?: string;
+  created_at: string;
+  updated_at: string;
+}
+
+export interface CreateTimeOffInput {
+  starts_at: string;
+  ends_at: string;
+  reason?: string;
+}
+
+export interface CheckIn {
+  id: number;
+  volunteer_id: number;
+  schedule_id?: number;
+  checked_in_at: string;
+  checked_out_at?: string;
+  notes?: string;
+}
+
+export interface Notification {
+  id: number;
+  volunteer_id: number;
+  message: string;
+  read: boolean;
+  created_at: string;
+}
@@ -0,0 +1,59 @@
+import React, { createContext, useContext, useState, useEffect, ReactNode } from 'react';
+
+interface AuthContextValue {
+  token: string | null;
+  role: string | null;
+  volunteerID: number | null;
+  login: (token: string) => void;
+  logout: () => void;
+}
+
+const AuthContext = createContext<AuthContextValue | null>(null);
+
+function parseJWT(token: string): { volunteer_id: number; role: string } | null {
+  try {
+    const payload = JSON.parse(atob(token.split('.')[1]));
+    return payload;
+  } catch {
+    return null;
+  }
+}
+
+export function AuthProvider({ children }: { children: ReactNode }) {
+  const [token, setToken] = useState<string | null>(() => localStorage.getItem('token'));
+  const [role, setRole] = useState<string | null>(null);
+  const [volunteerID, setVolunteerID] = useState<number | null>(null);
+
+  useEffect(() => {
+    if (token) {
+      const payload = parseJWT(token);
+      setRole(payload?.role ?? null);
+      setVolunteerID(payload?.volunteer_id ?? null);
+    } else {
+      setRole(null);
+      setVolunteerID(null);
+    }
+  }, [token]);
+
+  function login(t: string) {
+    localStorage.setItem('token', t);
+    setToken(t);
+  }
+
+  function logout() {
+    localStorage.removeItem('token');
+    setToken(null);
+  }
+
+  return (
+    <AuthContext.Provider value={{ token, role, volunteerID, login, logout }}>
+      {children}
+    </AuthContext.Provider>
+  );
+}
+
+export function useAuth() {
+  const ctx = useContext(AuthContext);
+  if (!ctx) throw new Error('useAuth must be used within AuthProvider');
+  return ctx;
+}
@@ -0,0 +1,13 @@
+body {
+  margin: 0;
+  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Roboto', 'Oxygen',
+    'Ubuntu', 'Cantarell', 'Fira Sans', 'Droid Sans', 'Helvetica Neue',
+    sans-serif;
+  -webkit-font-smoothing: antialiased;
+  -moz-osx-font-smoothing: grayscale;
+}
+
+code {
+  font-family: source-code-pro, Menlo, Monaco, Consolas, 'Courier New',
+    monospace;
+}
@@ -0,0 +1,19 @@
+import React from 'react';
+import ReactDOM from 'react-dom/client';
+import './index.css';
+import App from './App';
+import reportWebVitals from './reportWebVitals';
+
+const root = ReactDOM.createRoot(
+  document.getElementById('root') as HTMLElement
+);
+root.render(
+  <React.StrictMode>
+    <App />
+  </React.StrictMode>
+);
+
+// If you want to start measuring performance in your app, pass a function
+// to log results (for example: reportWebVitals(console.log))
+// or send to an analytics endpoint. Learn more: https://bit.ly/CRA-vitals
+reportWebVitals();
@@ -0,0 +1 @@
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@@ -0,0 +1,136 @@
+import React, { useEffect, useState } from 'react';
+import { api, CheckIn, Notification, Schedule } from '../api';
+import { useAuth } from '../auth';
+
+export default function Dashboard() {
+  const { volunteerID } = useAuth();
+  const [schedules, setSchedules] = useState<Schedule[]>([]);
+  const [notifications, setNotifications] = useState<Notification[]>([]);
+  const [activeCheckIn, setActiveCheckIn] = useState<CheckIn | null>(null);
+  const [history, setHistory] = useState<CheckIn[]>([]);
+  const [error, setError] = useState('');
+
+  useEffect(() => {
+    api.listSchedules().then(setSchedules).catch(() => {});
+    api.listNotifications().then(setNotifications).catch(() => {});
+    api.getHistory().then(data => {
+      setHistory(data);
+      const active = data.find(c => !c.checked_out_at && c.volunteer_id === volunteerID);
+      setActiveCheckIn(active ?? null);
+    }).catch(() => {});
+  }, [volunteerID]);
+
+  async function handleCheckIn() {
+    try {
+      const ci = await api.checkIn();
+      setActiveCheckIn(ci);
+      setHistory(prev => [ci, ...prev]);
+    } catch (err: any) {
+      setError(err.message);
+    }
+  }
+
+  async function handleCheckOut() {
+    try {
+      const ci = await api.checkOut();
+      setActiveCheckIn(null);
+      setHistory(prev => prev.map(c => c.id === ci.id ? ci : c));
+    } catch (err: any) {
+      setError(err.message);
+    }
+  }
+
+  async function handleMarkRead(id: number) {
+    try {
+      await api.markRead(id);
+      setNotifications(prev => prev.map(n => n.id === id ? { ...n, read: true } : n));
+    } catch {}
+  }
+
+  const upcomingSchedules = schedules
+    .filter(s => new Date(s.starts_at) >= new Date())
+    .slice(0, 5);
+
+  const unreadNotifications = notifications.filter(n => !n.read);
+
+  return (
+    <div className="page">
+      <h2>Dashboard</h2>
+      {error && <p className="error">{error}</p>}
+
+      <section className="card">
+        <h3>Check-In Status</h3>
+        {activeCheckIn ? (
+          <div>
+            <p>Checked in at {new Date(activeCheckIn.checked_in_at).toLocaleTimeString()}</p>
+            <button onClick={handleCheckOut}>Check Out</button>
+          </div>
+        ) : (
+          <button onClick={handleCheckIn}>Check In</button>
+        )}
+      </section>
+
+      <section className="card">
+        <h3>Upcoming Shifts</h3>
+        {upcomingSchedules.length === 0 ? (
+          <p>No upcoming shifts.</p>
+        ) : (
+          <ul>
+            {upcomingSchedules.map(s => (
+              <li key={s.id}>
+                <strong>{s.title}</strong> — {new Date(s.starts_at).toLocaleString()} to {new Date(s.ends_at).toLocaleString()}
+              </li>
+            ))}
+          </ul>
+        )}
+      </section>
+
+      <section className="card">
+        <h3>Notifications {unreadNotifications.length > 0 && <span className="badge">{unreadNotifications.length}</span>}</h3>
+        {notifications.length === 0 ? (
+          <p>No notifications.</p>
+        ) : (
+          <ul>
+            {notifications.map(n => (
+              <li key={n.id} className={n.read ? 'read' : 'unread'}>
+                {n.message}
+                {!n.read && (
+                  <button className="btn-small" onClick={() => handleMarkRead(n.id)}>Mark read</button>
+                )}
+              </li>
+            ))}
+          </ul>
+        )}
+      </section>
+
+      <section className="card">
+        <h3>Recent Check-In History</h3>
+        {history.length === 0 ? (
+          <p>No history yet.</p>
+        ) : (
+          <table>
+            <thead>
+              <tr><th>In</th><th>Out</th><th>Duration</th></tr>
+            </thead>
+            <tbody>
+              {history.slice(0, 10).map(c => {
+                const inTime = new Date(c.checked_in_at);
+                const outTime = c.checked_out_at ? new Date(c.checked_out_at) : null;
+                const duration = outTime
+                  ? `${Math.round((outTime.getTime() - inTime.getTime()) / 60000)} min`
+                  : 'Active';
+                return (
+                  <tr key={c.id}>
+                    <td>{inTime.toLocaleString()}</td>
+                    <td>{outTime ? outTime.toLocaleString() : '—'}</td>
+                    <td>{duration}</td>
+                  </tr>
+                );
+              })}
+            </tbody>
+          </table>
+        )}
+      </section>
+    </div>
+  );
+}
@@ -0,0 +1,43 @@
+import React, { useState, FormEvent } from 'react';
+import { useNavigate } from 'react-router-dom';
+import { api } from '../api';
+import { useAuth } from '../auth';
+
+export default function Login() {
+  const { login } = useAuth();
+  const navigate = useNavigate();
+  const [email, setEmail] = useState('');
+  const [password, setPassword] = useState('');
+  const [error, setError] = useState('');
+
+  async function handleSubmit(e: FormEvent) {
+    e.preventDefault();
+    setError('');
+    try {
+      const { token } = await api.login(email, password);
+      login(token);
+      navigate('/');
+    } catch (err: any) {
+      setError(err.message);
+    }
+  }
+
+  return (
+    <div className="auth-page">
+      <h1>Walkies</h1>
+      <h2>Sign In</h2>
+      <form onSubmit={handleSubmit}>
+        {error && <p className="error">{error}</p>}
+        <label>
+          Email
+          <input type="email" value={email} onChange={e => setEmail(e.target.value)} required />
+        </label>
+        <label>
+          Password
+          <input type="password" value={password} onChange={e => setPassword(e.target.value)} required />
+        </label>
+        <button type="submit">Sign In</button>
+      </form>
+    </div>
+  );
+}
@@ -0,0 +1,106 @@
+import React, { useEffect, useState, FormEvent } from 'react';
+import { api, Schedule } from '../api';
+import { useAuth } from '../auth';
+
+export default function Schedules() {
+  const { role } = useAuth();
+  const [schedules, setSchedules] = useState<Schedule[]>([]);
+  const [error, setError] = useState('');
+  const [showForm, setShowForm] = useState(false);
+  const [form, setForm] = useState({ title: '', starts_at: '', ends_at: '', notes: '' });
+
+  useEffect(() => {
+    api.listSchedules().then(setSchedules).catch(() => setError('Could not load schedules.'));
+  }, []);
+
+  async function handleCreate(e: FormEvent) {
+    e.preventDefault();
+    setError('');
+    try {
+      const sc = await api.createSchedule(form);
+      setSchedules(prev => [...prev, sc]);
+      setForm({ title: '', starts_at: '', ends_at: '', notes: '' });
+      setShowForm(false);
+    } catch (err: any) {
+      setError(err.message);
+    }
+  }
+
+  async function handleDelete(id: number) {
+    if (!window.confirm('Delete this schedule?')) return;
+    try {
+      await api.deleteSchedule(id);
+      setSchedules(prev => prev.filter(s => s.id !== id));
+    } catch (err: any) {
+      setError(err.message);
+    }
+  }
+
+  return (
+    <div className="page">
+      <div className="page-header">
+        <h2>Schedules</h2>
+        {role === 'admin' && (
+          <button onClick={() => setShowForm(v => !v)}>
+            {showForm ? 'Cancel' : 'Add Shift'}
+          </button>
+        )}
+      </div>
+      {error && <p className="error">{error}</p>}
+
+      {showForm && (
+        <form className="card" onSubmit={handleCreate}>
+          <h3>New Shift</h3>
+          <label>
+            Title
+            <input value={form.title} onChange={e => setForm(f => ({ ...f, title: e.target.value }))} required />
+          </label>
+          <label>
+            Starts At
+            <input type="datetime-local" value={form.starts_at} onChange={e => setForm(f => ({ ...f, starts_at: e.target.value }))} required />
+          </label>
+          <label>
+            Ends At
+            <input type="datetime-local" value={form.ends_at} onChange={e => setForm(f => ({ ...f, ends_at: e.target.value }))} required />
+          </label>
+          <label>
+            Notes
+            <textarea value={form.notes} onChange={e => setForm(f => ({ ...f, notes: e.target.value }))} />
+          </label>
+          <button type="submit">Create</button>
+        </form>
+      )}
+
+      {schedules.length === 0 ? (
+        <p>No schedules found.</p>
+      ) : (
+        <table>
+          <thead>
+            <tr>
+              <th>Title</th>
+              <th>Starts</th>
+              <th>Ends</th>
+              <th>Notes</th>
+              {role === 'admin' && <th>Actions</th>}
+            </tr>
+          </thead>
+          <tbody>
+            {schedules.map(s => (
+              <tr key={s.id}>
+                <td>{s.title}</td>
+                <td>{new Date(s.starts_at).toLocaleString()}</td>
+                <td>{new Date(s.ends_at).toLocaleString()}</td>
+                <td>{s.notes ?? '—'}</td>
+                {role === 'admin' && (
+                  <td>
+                    <button className="btn-danger btn-small" onClick={() => handleDelete(s.id)}>Delete</button>
+                  </td>
+                )}
+              </tr>
+            ))}
+          </tbody>
+        </table>
+      )}
+    </div>
+  );
+}
@@ -0,0 +1,110 @@
+import React, { useEffect, useState, FormEvent } from 'react';
+import { api, TimeOffRequest } from '../api';
+import { useAuth } from '../auth';
+
+export default function TimeOff() {
+  const { role } = useAuth();
+  const [requests, setRequests] = useState<TimeOffRequest[]>([]);
+  const [error, setError] = useState('');
+  const [showForm, setShowForm] = useState(false);
+  const [form, setForm] = useState({ starts_at: '', ends_at: '', reason: '' });
+
+  useEffect(() => {
+    api.listTimeOff().then(setRequests).catch(() => setError('Could not load requests.'));
+  }, []);
+
+  async function handleCreate(e: FormEvent) {
+    e.preventDefault();
+    setError('');
+    try {
+      const req = await api.createTimeOff(form);
+      setRequests(prev => [req, ...prev]);
+      setForm({ starts_at: '', ends_at: '', reason: '' });
+      setShowForm(false);
+    } catch (err: any) {
+      setError(err.message);
+    }
+  }
+
+  async function handleReview(id: number, status: 'approved' | 'rejected') {
+    try {
+      const req = await api.reviewTimeOff(id, status);
+      setRequests(prev => prev.map(r => r.id === id ? req : r));
+    } catch (err: any) {
+      setError(err.message);
+    }
+  }
+
+  const statusClass = (status: string) => {
+    if (status === 'approved') return 'status-approved';
+    if (status === 'rejected') return 'status-rejected';
+    return 'status-pending';
+  };
+
+  return (
+    <div className="page">
+      <div className="page-header">
+        <h2>Time Off Requests</h2>
+        <button onClick={() => setShowForm(v => !v)}>
+          {showForm ? 'Cancel' : 'Request Time Off'}
+        </button>
+      </div>
+      {error && <p className="error">{error}</p>}
+
+      {showForm && (
+        <form className="card" onSubmit={handleCreate}>
+          <h3>New Request</h3>
+          <label>
+            From
+            <input type="date" value={form.starts_at} onChange={e => setForm(f => ({ ...f, starts_at: e.target.value }))} required />
+          </label>
+          <label>
+            To
+            <input type="date" value={form.ends_at} onChange={e => setForm(f => ({ ...f, ends_at: e.target.value }))} required />
+          </label>
+          <label>
+            Reason
+            <textarea value={form.reason} onChange={e => setForm(f => ({ ...f, reason: e.target.value }))} />
+          </label>
+          <button type="submit">Submit</button>
+        </form>
+      )}
+
+      {requests.length === 0 ? (
+        <p>No time off requests.</p>
+      ) : (
+        <table>
+          <thead>
+            <tr>
+              <th>From</th>
+              <th>To</th>
+              <th>Reason</th>
+              <th>Status</th>
+              {role === 'admin' && <th>Actions</th>}
+            </tr>
+          </thead>
+          <tbody>
+            {requests.map(r => (
+              <tr key={r.id}>
+                <td>{new Date(r.starts_at).toLocaleDateString()}</td>
+                <td>{new Date(r.ends_at).toLocaleDateString()}</td>
+                <td>{r.reason ?? '—'}</td>
+                <td><span className={statusClass(r.status)}>{r.status}</span></td>
+                {role === 'admin' && (
+                  <td>
+                    {r.status === 'pending' && (
+                      <>
+                        <button className="btn-small" onClick={() => handleReview(r.id, 'approved')}>Approve</button>
+                        <button className="btn-small btn-danger" onClick={() => handleReview(r.id, 'rejected')}>Reject</button>
+                      </>
+                    )}
+                  </td>
+                )}
+              </tr>
+            ))}
+          </tbody>
+        </table>
+      )}
+    </div>
+  );
+}
@@ -0,0 +1,57 @@
+import React, { useEffect, useState } from 'react';
+import { api, Volunteer } from '../api';
+
+export default function Volunteers() {
+  const [volunteers, setVolunteers] = useState<Volunteer[]>([]);
+  const [error, setError] = useState('');
+
+  useEffect(() => {
+    api.listVolunteers().then(setVolunteers).catch(() => setError('Could not load volunteers.'));
+  }, []);
+
+  async function handleToggleActive(v: Volunteer) {
+    try {
+      const updated = await api.updateVolunteer(v.id, { active: !v.active });
+      setVolunteers(prev => prev.map(vol => vol.id === v.id ? updated : vol));
+    } catch (err: any) {
+      setError(err.message);
+    }
+  }
+
+  return (
+    <div className="page">
+      <h2>Volunteers</h2>
+      {error && <p className="error">{error}</p>}
+      {volunteers.length === 0 ? (
+        <p>No volunteers found.</p>
+      ) : (
+        <table>
+          <thead>
+            <tr>
+              <th>Name</th>
+              <th>Email</th>
+              <th>Role</th>
+              <th>Status</th>
+              <th>Actions</th>
+            </tr>
+          </thead>
+          <tbody>
+            {volunteers.map(v => (
+              <tr key={v.id}>
+                <td>{v.name}</td>
+                <td>{v.email}</td>
+                <td>{v.role}</td>
+                <td>{v.active ? 'Active' : 'Inactive'}</td>
+                <td>
+                  <button className="btn-small" onClick={() => handleToggleActive(v)}>
+                    {v.active ? 'Deactivate' : 'Activate'}
+                  </button>
+                </td>
+              </tr>
+            ))}
+          </tbody>
+        </table>
+      )}
+    </div>
+  );
+}
@@ -0,0 +1 @@
+/// <reference types="react-scripts" />
@@ -0,0 +1,15 @@
+import { ReportHandler } from 'web-vitals';
+
+const reportWebVitals = (onPerfEntry?: ReportHandler) => {
+  if (onPerfEntry && onPerfEntry instanceof Function) {
+    import('web-vitals').then(({ getCLS, getFID, getFCP, getLCP, getTTFB }) => {
+      getCLS(onPerfEntry);
+      getFID(onPerfEntry);
+      getFCP(onPerfEntry);
+      getLCP(onPerfEntry);
+      getTTFB(onPerfEntry);
+    });
+  }
+};
+
+export default reportWebVitals;
@@ -0,0 +1,5 @@
+// jest-dom adds custom jest matchers for asserting on DOM nodes.
+// allows you to do things like:
+// expect(element).toHaveTextContent(/react/i)
+// learn more: https://github.com/testing-library/jest-dom
+import '@testing-library/jest-dom';
@@ -0,0 +1,26 @@
+{
+  "compilerOptions": {
+    "target": "es5",
+    "lib": [
+      "dom",
+      "dom.iterable",
+      "esnext"
+    ],
+    "allowJs": true,
+    "skipLibCheck": true,
+    "esModuleInterop": true,
+    "allowSyntheticDefaultImports": true,
+    "strict": true,
+    "forceConsistentCasingInFileNames": true,
+    "noFallthroughCasesInSwitch": true,
+    "module": "esnext",
+    "moduleResolution": "node",
+    "resolveJsonModule": true,
+    "isolatedModules": true,
+    "noEmit": true,
+    "jsx": "react-jsx"
+  },
+  "include": [
+    "src"
+  ]
+}
				`@@ -0,0 +1 @@`
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