[TASK]: 📄 Issue 5 — Write API Documentation (API_REFERENCE.md)

[hammad-ibrahim]

🌟 The Problem

There is no documents for the Frontend or the usage of APIs for dev

💡 The Proposed Solution

Describe the feature you would like to see implemented. (Describe the "What").

• *A REDEME file : API_REFERENCE.md

• Include 👍

• Endpoints
• Request/Response examples
• Authentication
• Errors

✅ Acceptance Criteria

List the specific, testable conditions that must be met for this feature to be considered complete.

• Criterion 1

• Clear doc
• Includes all CRUD + Sessions
• Markdown format clean

⏳ Estimated Effort: 2–3 hours

Context/Alternatives

Have you considered any alternative solutions or workarounds? If so, why is this proposal better?