[P3] Documentation: Add JSDoc comments to public APIs

[Pamacea]

Priority

P3 - Low Priority

Category

Documentation

Description

Public API functions lack JSDoc comments, making auto-completion less helpful and code harder to understand.

Example

Before

export async function createCharacter(data: CharacterInput) {
  // What parameters does it accept?
  // What does it return?
  // What errors can it throw?
}

After

/**
 * Create a new character in a game world.
 *
 * @param data - Character creation data
 * @param data.name - Character name (1-200 characters)
 * @param data.gameWorldId - ID of the world to add character to
 * @param data.characterType - Type of character (PLAYER, NPC, etc.)
 * @returns Result object with created character or error
 * @throws {ValidationError} If input validation fails
 * @throws {AuthorizationError} If user lacks permission
 *
 * @example
 * ```typescript
 * const result = await createCharacter({
 *   name: 'Gandalf',
 *   gameWorldId: 'world-123',
 *   characterType: 'NPC',
 * });
 *
 * if (result.success) {
 *   console.log('Created:', result.data);
 * }
 * ```
 */
export async function createCharacter(
  data: CharacterInput
): Promise<Result<Character>> {
  // ...
}

Implementation Checklist

• Add JSDoc to all Server Actions
• Add JSDoc to exported hooks
• Add JSDoc to utility functions
• Add usage examples
• Document error types
• Add @example blocks

Success Criteria

• All public APIs have JSDoc comments
• All parameters documented
• All return types documented
• All error cases documented
• IDE autocomplete shows helpful descriptions

Co-Authored-By: Claude Opus 4.6 noreply@anthropic.com