feat(rest/python): implement cart capability and discount extension - #159

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damaz91 wants to merge 11 commits into

Universal-Commerce-Protocol:mainfrom

damaz91:feat/cart-implementation

Commits on Aug 3, 2026

feat(samples): implement cart capability and discount extension
damaz91
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80f7cf1
feat(samples): update happy path client to use Cart flow
damaz91
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67fcbdc
feat(samples): simplify cart-to-checkout client payload and server support
damaz91
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23f4770
feat(samples): follow spec for cart-to-checkout conversion payload (no payment handlers)
damaz91
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5dc4500
feat(samples): update discovery profile to advertise that discount capability extends cart
damaz91
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a1f459e
feat(samples): populate ucp.payment_handlers in checkout response with default handlers
damaz91
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92db97f
Merge branch 'main' into feat/cart-implementation
damaz91
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f69984f
style: fix linter and formatting issues
damaz91
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05fb6e4
fix(samples): omit id for new line item in happy path client
damaz91
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9e0d47a
refactor(samples): rename _recalculate_totals to _enrich_and_recalculate for clarity
damaz91
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1b4348d
chore: merge origin/main and resolve conflicts in simple_happy_path_client.py
damaz91
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8327e9a