As a developer, I want to compile FHIR resources into a Bundle of type document, so that the bundle conforms to FHIR standards and can be validated/transmitted.

Bundle Requirements:

• resourceType: Bundle
• type: document
• id: Unique to record type (e.g., OPConsultationNote)
• entry[0]: Composition resource (always first)
• entry[1+]: Patient, Condition, Procedure, etc.

Composition Structure:

• subject: Patient reference
• encounter: Encounter reference
• author: Practitioner
• type, title: Fixed per record type
• section: Points to other entries (Condition, Procedure, etc.)

Acceptance Criteria:

• Bundle created with correct entry order.
• fullUrl for each resource included.
• Composition section matches the actual entries.
• Structured and unstructured formats are both supported.