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Reusable custom styles can change appearance abruptly, while an animated thumbnail can repeatedly draw an oversized original. This change makes component-owned visual transitions and retained display-appropriate images explicit shared policy in Guidelines/Swift/SwiftUI.md.

Audit enforcement is requested and included: the completion audit checks changed components and directly affected consumers for transition ownership, both enabled-state directions, immediate functional state, stable identity, animation scope, derivative lifetime, and actual interaction evidence. Apple references support animation transaction scope and ImageIO downsampling. The existing Reduce Motion paragraph is unchanged.

Prepare release 0.0.41 with matching VERSION, changelog, and both README subtree commands. No product APIs, dependencies, consumer migrations, universal image sizes, provider blame, frame-rate threshold, or regex performance linter are introduced. The validator protects the guidance contract, not application performance.

Validation on macOS:

• Scripts/swift_format.sh format-and-lint Scripts/validate_guidelines.swift Tests/run_tests.swift and lint-strict on the same paths: passed.
• Scripts/validate_guidelines.swift: passed, 21 guides at 0.0.41.
• Tests/run_tests.swift: passed, all 39 native Swift tests; includes an unmodified fixture and independent guide/audit mutations.
• .agents/skills/agent-guidelines-audit/scripts/check_markdown_wrapping.swift Guidelines/Swift/SwiftUI.md .agents/skills/agent-guidelines-audit/SKILL.md CHANGELOG.md README.md: passed.
• git diff --check: passed.

Completion audit: all requested policy and enforcement points are covered; root ignore patterns match the shared template exactly; no String Catalog, application target, dependency, or consumer file changes. Originating consumer guidance was verified at the current 0.0.40 tag with exact tree provenance and generated-subtree attributes before central edits. Adoption of 0.0.41 remains separate.

Scenario walkthroughs (policy evaluation, not claimed application runtime tests):

Scenario	Result
Custom main-button colors jump abruptly	Blocked until corrected or intentional immediate feedback is justified
Shared style animates both directions with immediate actions	Accepted only with runtime evidence, including presses and reversals
Native control already supplies appropriate feedback	Accepted without added animation
Animated thumbnail repeatedly prepares a large original	Correction and relevant verification required
Retained derivative preserves originals and rejects stale results	Accepted with applicable tests and interaction evidence
Zero hitches from an idle capture	Insufficient; active interaction verification remains required

No simulator or Instruments run is applicable to this central documentation/validator change. Consumer motion changes will require the newly specified evidence. Exact-base/head Reasoning Relay review and green CI are required before merge and release.

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Reasoning Relay independent review completed with no blocking or non-blocking findings.

• Verdict: APPROVED
• Reviewed-PR: Guide smooth SwiftUI interactions and efficient image rendering #51
• Reviewed-Base: a14a901
• Reviewed-Head: 875464a
• Delegation: del_1d67172c-086f-4c0d-a531-05836204364a
• Relay response hash: 6abfd629b481d200e505bb2c0adeee633f35a40d81958bff78033305b429445d
• Relay payload hash: c58787dbe1ae09f24d3f342708529a8147d745e9b13f0ba2c2b504f5adada31e
• Response byte count: 1318

The reviewer independently inspected the complete seven-file PR diff and relevant surrounding source through GitHub. CI was still running at the review's final check and has since passed: https://github.com/thatfactory/agent-guidelines/actions/runs/39494123703

Original Relay-returned response (line breaks were absent in the returned text):

Verdict: APPROVEDReviewed-PR: https://github.com/thatfactory/agent-guidelines/pull/51Reviewed-Base: a14a901645ac6a148498a080105e9b546c07b933Reviewed-Head: 875464a61ada5cc884fc5e05fb333f10f700170fBlocking-Findings:- NoneNon-Blocking-Findings:- NoneReview-Summary:Independently inspected the complete seven-file PR diff and relevant surrounding source through GitHub, including root AGENTS.md, Guidelines/GitHub/PullRequests.md, the SwiftUI guide, completion audit, validator, mutation tests, release metadata, and CI configuration.The implementation satisfies the stated acceptance criteria:Reusable animation ownership, bidirectional transitions, immediate functional state, native feedback, stable identity, and transaction scoping.Retained image derivatives, bounded memory, invalidation, concurrency safety, stale-result rejection, and drawable-representation inspection.Audit enforcement covering interaction scenarios, regression comparisons, and evidence requirements.Validator presence checks with baseline and mutation coverage.Consistent 0.0.41 release metadata and preserved Reduce Motion policy.No substantiated P0/P1 defects or scope violations identified.Exact base/head identities verified. GitHub CI remained in_progress at the final check; successful completion remains a separate mandatory merge gate.

Local checks and completion-audit evidence are recorded in the PR description. Automatic Codex configuration is unknown, with no current-head execution signal observed; no manual Codex review was requested.