Reviewed as part of the 15-PR edit-panel redesign stack. Full stack review posted on #2120. No blockers on this PR. — Miga

Final current-head pass: 4b9c3cf. Reviewed the stack boundaries and current diff against the flat-inspector contracts; required checks have no failures/pending checks and no unresolved review threads remain. No new drift found; residual notes are non-blocking.

Superseding earlier approval: the latest max-review pass found confirmed correctness issues in this flat-inspector stack (identity/selector-index state, hide-all write races, timing inference, slider pointer/keyboard/reset semantics, and duplicate React keys). Hold merge and require fixes plus re-review on the current stack head.

Re-reviewed exact head 69c2dca46bc0499aa62a164b785b4a9d0285bdc2. The flat Media replacement changes established edit granularity: propertyPanelFlatMediaSection.tsx:204-223 relies on FlatSlider’s default step of 1, while the legacy media controls at propertyPanelMediaSection.tsx:260-287 use rate step 5 and media-start step 10. That is a silent interaction-contract regression in the layer that replaces the surface.

Pass the intended domain steps explicitly and pin them with parity tests.

Verdict: REQUEST CHANGES
Reasoning: The replacement Media controls silently change rate/start adjustment granularity from the legacy contract.

— Deepwork

Additive adversarial re-review at exact head . The previously reported Media step-contract regression remains unchanged.\n\nStrength: The Media layer keeps and writes routed through the same style persistence boundary ().\n\n**[blocker] The new Position select cannot represent authored CSS positions.** passes arbitrary into but offers only nine presets. The primitive renders no fallback option for the current value, so common valid values such as , , or display as . The user cannot distinguish custom persisted positioning from the default and can overwrite it unknowingly. Preserve unknown current values, matching legacy , and pin a custom-position regression.\n\nVerdict: REQUEST CHANGES\nReasoning: This layer introduces a concrete consumer where the flat select loses valid authored state, in addition to the still-unfixed media granularity regression.\n\n— Deepwork

Additive adversarial re-review at exact head 69c2dca46bc0499aa62a164b785b4a9d0285bdc2. The previously reported Media step-contract regression remains unchanged.

Strength: Media routes object-fit and object-position through the same style persistence boundary (propertyPanelFlatMediaSection.tsx:251-276).

[blocker] The Position select cannot represent authored CSS positions. propertyPanelFlatMediaSection.tsx:260-275 passes arbitrary objectPosition into FlatSelectRow but offers nine presets. Values such as 25% 70%, 10px 2em, or right 12px bottom 4px display as center. The user can unknowingly overwrite valid persisted positioning. Preserve unknown values, matching legacy SelectField, and pin a custom-position regression.

Verdict: REQUEST CHANGES
Reasoning: This layer adds a concrete consumer where the flat select loses valid authored state, in addition to the still-unfixed media granularity regression.

— Deepwork

Re-reviewed at 1eb9ab356f16e20bd289ed086a27d1a4d77b448e.

The incremental patch is byte-equivalent to the previously reviewed head (patch-id b2d0be44…). propertyPanelFlatMediaSection.tsx:260-275 still feeds arbitrary authored object-position values into a fixed preset select, so values such as 25% 70% display as a different preset and can be overwritten. Media Rate and Media start also still omit the legacy step behavior at :195-223, and the copy-feedback timeout remains untracked across unmount.

Verdict: REQUEST CHANGES
Reasoning: This force-push is a rebase only; the media value-parity and lifecycle blockers are unchanged.

— Deepwork

Stack-scoped re-review at 1eb9ab3.

The incremental layer is unchanged, and its prior requested changes are now resolved in the accepted mandatory tip fix, #2416 at 832d5be. I verified the cumulative tip closes the flat-inspector identity, value-parity, lifecycle, persistence, accessibility, and constrained-layout findings with focused regression coverage. This approval assumes the Graphite stack lands bottom-up through #2416; this layer should not be landed while dropping the approved tip fix.

Verdict: APPROVE

Reasoning: The accepted tip-fix strategy closes the blocker inherited or introduced at this layer, and the verified cumulative stack is coherent through #2416.

— Deepwork