feat(review): render linked-issue satisfaction as an advisory section in the unified comment

[JSONbored]

Surface slice of #1961: given a resolved satisfaction result, render a compact public-safe collapsible/section in the unified review comment (addressed/partial/unaddressed + short rationale). Presentation only — additive, never affects the gate. Absent result = no section (byte-identical).

Deliverables

• Add an optional linkedIssueSatisfaction field to UnifiedReviewInput and render it via the existing collapsible-section helper in src/review/unified-comment.ts
• Public-safe escaping via escapePublicHtmlAngles (src/review/unified-comment.ts:449)
• Omit the section entirely when the result is absent
• Tests: each status renders, absent = no section, HTML angle-escaping, snapshot of the section body (branch-counted)

References

• src/review/unified-comment.ts:473
• src/review/unified-comment.ts:449
• src/review/unified-comment.ts:198

Part of #1961.

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size: S · held for later release (gittensor:feature once activated)

[linear-code]

JSO-2275