docs(skills): fix typed SDK examples

[bokelley]

Summary

Follow-up from the expert pass after #142:

• fixes seller/generative/retail product examples to include required publisher_properties and reporting_capabilities
• updates creative-agent snippets to use typed CreativeManifest and BuildCreativeRequest.TargetFormatID
• fixes LogEventResponse docs to include matchQuality
• aligns generative/retail skill validation status with README

Validation

• git diff --check
• source/docs inspection only; markdown/example-only changes

Related

Generator replacement/evaluation tracked in #145.

[aao-ipr-bot]

LGTM. Clean follow-up that pulls the skill examples back onto the typed SDK and the required-field reality.

Things I checked

• LogEventResponse signature in README.md and skills/build-retail-media-agent/SKILL.md matches adcp/responses.go:231 — (received, processed int, matchQuality float64, sandbox bool).
• BuildCreativeRequest.TargetFormatID is *FormatRef at adcp/types_gen.go:2431; the rename from FormatID to TargetFormatID in skills/build-creative-agent/SKILL.md is the right shape.
• CreativeManifest.FormatID is a typed FormatRef at adcp/types_gen.go:1900, not map[string]any — so input.CreativeManifest.FormatID.ID replaces the old double type-assert correctly.
• Product.PublisherProperties and Product.ReportingCapabilities are both required on the wire — no omitempty at adcp/types_gen.go:1785 and :1798. The seller skill's prior "publisher_properties is optional" line was drift; this fix is schema-honest.
• Validation-status flip on generative-seller and retail-media aligns with README.md:54-55, which already lists both as 9/9 validated. Docs catching up to README, not the other way around.
• Conventional commit type docs(skills): is correct — no wire-path symbols removed, no breaking marker needed.

Follow-ups (non-blocking — file as issues)

• skills/build-creative-agent/SKILL.md build path still constructs the outbound manifest as map[string]any{"format_id": ..., "assets": ...} even though input.CreativeManifest is now typed. Worth a pass to drop the map intermediate and pass the typed manifest through, if the downstream serving-tag builder takes one. Not blocking — the wire shape is unchanged.
• The seller-agent common-mistakes row collapses three required fields into one bullet ("Missing publisher_properties, format_ids, or reporting_capabilities"). Reads fine; a future pass could split them so an adopter grepping for a single field name still hits the row.

Safe to merge.