[Sirajmx]

Draft. Do not merge until the working group confirms the disposition of #23.

What this changes

A proposal can now say whether its line items may be bought separately (linked_execution, § 4.1), and a line item can say which other line items, or what spend on them, must be in the same commitment (requires, § 5.6.3). A bonus line item is a line item with requires and its own price, so every price stays self-contained. The § 2 "binding terms" hook now points at a real field. The Summary Representation carries has_requires and linked_execution, so screening agents don't recommend a line item that can't be bought on its own.

Related issue

Refs #23. Proposed to close OQ-5 (#6). The "same proposal and version" rule relies on the version rules proposed in #24.

Type

• Editorial — no normative effect
• Normative — changes what the spec requires
• Breaking — would break an implementation already built to this draft
• Examples / schema / docs only

Checklist

• The body section is updated
• Appendix A (field index) matches the body — two rows; scripts/check_appendix.py passes
• Appendix B (fields by marker, and the counts) matches the body — seller-set 29 → 31; 71 → 73 fields
• Any affected example in examples/ is updated and still parses — new line-item-ctv-bonus.yaml (§ 6.5); linked_execution: none in proposal.yaml
• RFC 2119 keywords used deliberately — MUST / SHOULD / MAY are not synonyms
• The no-inheritance rule (§ 2) still holds — requires references sibling ids; it inherits no values
• Anything selectable declares available[] and included[]; anything settable declares bounds (§ 3.1, § 3.2) — no new selectable or settable fields
• No confidential or commercially sensitive content

Knock-on effects

• Not included, for the working group: a hold rule, that when linked_execution is all a hold must use hold_scope: proposal, so a buyer can't hold the anchor line and let the rest of the package sell (TelevisaUnivision on [Change] § 2, § 4.1, § 5.6 — Line-item dependencies and bonus lines (linked_execution, requires) #23); an added_value flag, so a zero-cost bonus line isn't read as a pricing error (TelevisaUnivision on [Change] § 2, § 4.1, § 5.6 — Line-item dependencies and bonus lines (linked_execution, requires) #23); and total-proposal spend tiers (min_proposal_commitment).
• Example: [Change] § 2, § 4.1, § 5.6 — Line-item dependencies and bonus lines (linked_execution, requires) #23 suggested a CTV bonus unlocked by display and video spend. The examples have no video line item, so the bonus is unlocked by the display and CTV line items instead.
• Scope: this PR carries the change as filed in [Change] § 2, § 4.1, § 5.6 — Line-item dependencies and bonus lines (linked_execution, requires) #23. Points raised in the issue's comments are listed above for the working group, not added to the spec text.
• Related: [Comment] § 5.2 — Inventory composition #50 asks for indivisible OOH packages, which linked_execution: all covers.
• Appendix B: other open change requests also change these counts; whichever merges later recounts.

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