Fix BASE_URL config loading, add tasks/projects; robust .env path resolution

- Config: try ENV_FILE, .env, ../.env for loading; trim trailing slash from BaseURL
- Log BASE_URL at server startup for verification
- .env.example: document BASE_URL
- Tasks, projects, tags, migrations and related API/handlers

Made-with: Cursor

internal/models/models.go

@@ -79,6 +79,70 @@ type Attachment struct {
 	FileURL string    `json:"file_url"`
 }
 
+type Task struct {
+	ID                  uuid.UUID  `json:"id"`
+	OwnerID             uuid.UUID  `json:"owner_id"`
+	Title               string     `json:"title"`
+	Description         *string    `json:"description"`
+	Status              string     `json:"status"`
+	Priority            string     `json:"priority"`
+	DueDate             *time.Time `json:"due_date"`
+	CompletedAt         *time.Time `json:"completed_at"`
+	CreatedAt           time.Time  `json:"created_at"`
+	UpdatedAt           time.Time  `json:"updated_at"`
+	ProjectID           *uuid.UUID `json:"project_id"`
+	ParentID            *uuid.UUID `json:"parent_id"`
+	SortOrder           int       `json:"sort_order"`
+	RecurrenceRule      *string    `json:"recurrence_rule"`
+	Subtasks            []Task    `json:"subtasks,omitempty"`
+	Tags                []Tag     `json:"tags,omitempty"`
+	CompletionPercentage *int     `json:"completion_percentage,omitempty"`
+}
+
+type Project struct {
+	ID        uuid.UUID  `json:"id"`
+	OwnerID   uuid.UUID  `json:"owner_id"`
+	Name      string     `json:"name"`
+	Color     string     `json:"color"`
+	IsShared  bool       `json:"is_shared"`
+	Deadline  *time.Time `json:"deadline"`
+	SortOrder int        `json:"sort_order"`
+	CreatedAt time.Time  `json:"created_at"`
+	UpdatedAt time.Time  `json:"updated_at"`
+}
+
+type ProjectMember struct {
+	UserID uuid.UUID `json:"user_id"`
+	Email  string    `json:"email"`
+	Role   string    `json:"role"`
+}
+
+type TaskWebhook struct {
+	ID        uuid.UUID  `json:"id"`
+	OwnerID   uuid.UUID  `json:"owner_id"`
+	URL       string     `json:"url"`
+	Events    []string   `json:"events"`
+	Secret    *string    `json:"secret,omitempty"`
+	CreatedAt time.Time  `json:"created_at"`
+}
+
+type TaskReminder struct {
+	ID          uuid.UUID              `json:"id"`
+	TaskID      uuid.UUID              `json:"task_id"`
+	Type        string                 `json:"type"`
+	Config      map[string]interface{} `json:"config"`
+	ScheduledAt time.Time              `json:"scheduled_at"`
+	CreatedAt   time.Time              `json:"created_at"`
+}
+
+type Tag struct {
+	ID        uuid.UUID `json:"id"`
+	OwnerID   uuid.UUID `json:"owner_id"`
+	Name      string    `json:"name"`
+	Color     string    `json:"color"`
+	CreatedAt time.Time `json:"created_at"`
+}
+
 type Contact struct {
 	ID        uuid.UUID  `json:"id"`
 	FirstName *string    `json:"first_name"`