[E-Commerce] Forms: CartForm, AddToCartForm, CheckoutForm

[jsirish]

Overview

Create frontend forms for cart and checkout operations.

Requirements

AddToCartForm

• ProductID, VariationID (optional)
• Quantity field
• Adds to session-based cart
• AJAX add-to-cart support

CartForm

• Update quantities
• Remove items
• Update cart totals
• Continue shopping link

CheckoutForm

• Billing address fields
• Shipping address (checkbox: same as billing)
• Payment method selector
• Order notes field
• Validation on all required fields

Acceptance Criteria

• AddToCartForm adds items to cart
• CartForm updates quantities correctly
• CheckoutForm validates all fields
• Forms handle errors gracefully
• CSRF protection enabled

Relates to #71

[jsirish]

🏥 Re-evaluation: Phase Reset

This issue has been in phase:needs-human-review for >12h without activity.

Assessment: No linked PR found — resetting to planning
Action taken: Transitioned to phase:planning

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AutoPipe Health Checker — Staleness Re-evaluation

[jsirish]

🔨 Builder: Implementation complete. See PR #232.