Entity: Volunteer

Represents a person who registered interest in volunteering at the institute.

Fields

Field	Type	Nullable	Default	Description
id	serial	no	auto	Primary key
name	varchar(255)	no	—	Volunteer's full name
profession	varchar(255)	no	—	Volunteer's profession or area of expertise
availability	jsonb	no	—	Availability window: { days: string[], startTime: string, endTime: string }

Standard columns (created_at, updated_at, deleted_at) are inherited per ADR-007 and should not be listed here.

Relations

None.

Business rules

• availability.days must contain at least one day.
• availability.days values must be valid English weekday names: monday, tuesday, wednesday, thursday, friday, saturday, sunday.
• availability.startTime and availability.endTime must be valid times in HH:MM format.
• availability.endTime must be after availability.startTime.

Notes

• The volunteer record is persisted for history and future reporting.
• After registration, the client receives a whatsappUrl to redirect the volunteer to a pre-filled WhatsApp conversation with the institution.