refactor(ui): inline diff row dispatch

[benvinegar]

Summary

• inline metadata/code row dispatch into DiffRowView
• remove the 17-argument positional render helper
• preserve the existing focused CodeRowView and DiffMetaRowView boundaries

Why

The helper had one caller and repeated the facade's complete prop list positionally. Keeping dispatch beside prop resolution makes forwarding easier to audit without changing row rendering ownership.

Stack

1. refactor(ui): use default diff row memo comparison #1017 — default memo comparison
2. This PR — inline diff-row dispatch
3. refactor(ui): require planned diff rows #1019 — require planned diff-row input

Merge bottom to top. This PR is based on refactor/diff-row-default-memo; the next PR is based on this branch.

Validation

Run on the stack tip:

• bun run typecheck
• bun run test
• bun run test:integration
• bun run test:tty-smoke

All passed. No user-visible rendering behavior changes, so no new visual evidence was captured.

This PR description was generated by Pi using gpt-5.6-sol

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1 Skipped Deployment

Project	Deployment	Actions	Updated
hunk-web	Ignored	Preview	Sep 7, 2026 12:43pm UTC

[greptile-apps]

Greptile Summary

This PR simplifies diff-row rendering by moving metadata/code row dispatch directly into DiffRowView while preserving the focused child-component boundaries and existing behavior.

• Removes the single-use, 17-argument renderRow helper.
• Preserves dispatch for collapsed, hunk-header, split-line, and stack-line rows.
• Adds the conventional empty changeset for a maintenance-only refactor.

Confidence Score: 5/5

The PR appears safe to merge because it preserves the existing exhaustive row dispatch and child prop forwarding.

No actionable failures remain; every valid row variant follows the same rendering branch with the same values as before, and the empty changeset matches repository convention.

Important Files Changed

Filename	Overview
packages/hunk/src/ui/diff/DiffRowView.tsx	Inlines behavior-equivalent row dispatch and prop forwarding into the memoized facade.
.changeset/neat-rows-dispatch.md	Adds a valid empty changeset for a refactor that does not require release notes.

_{Reviews (1): Last reviewed commit: "refactor(ui): inline diff row dispatch" | Re-trigger Greptile}