feat: expanded snippet density mode on /mail - #3493
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Add a list density control next to the existing list/split view toggle so thread rows can show ~5 lines of snippet in both layouts. Persist the preference on EmailAccount alongside mailLayout, and bind D as a shortcut. Co-authored-by: Elie Steinbock <elie222@users.noreply.github.com>
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No actionable comments were generated in the recent review. 🎉 ℹ️ Recent review info⚙️ Run configurationConfiguration used: Path: .coderabbit.yaml Review profile: CHILL Plan: Team Run ID: 📒 Files selected for processing (3)
🚧 Files skipped from review as they are similar to previous changes (1)
Included review availability: Your plan provides up to 10 included reviews per hour; 8 remain after this review. 📝 WalkthroughWalkthroughThe mail list now supports compact and expanded density modes. The selected mode is stored on ChangesMail list density
Estimated code review effort: 4 (Complex) | ~45 minutes Merge Risk: 🔵 Low · up to The PR adds a persisted compact/expanded mail-list preference without expanding message access or provider data usage. It is mergeable with owner awareness of a bounded consistency risk: after a failed save or rapid account change, the displayed density could temporarily differ from the account’s saved preference. Sequence Diagram(s)sequenceDiagram
participant ListToolbar
participant MailShell
participant updateMailPreferencesAction
participant EmailAccount
participant ThreadList
participant ThreadRow
ListToolbar->>MailShell: toggle density
MailShell->>MailShell: apply optimistic update and queue persistence
MailShell->>updateMailPreferencesAction: persist density
updateMailPreferencesAction->>EmailAccount: update mailListDensity
MailShell->>ThreadList: pass density
ThreadList->>ThreadRow: pass density
ThreadRow-->>MailShell: render compact or expanded snippets
🚥 Pre-merge checks | ✅ 4 | ❌ 1❌ Failed checks (1 warning)
✅ Passed checks (4 passed)
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🧪 Generate unit tests (beta)
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Actionable comments posted: 1
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Inline comments:
In `@apps/web/app/`(app)/[emailAccountId]/mail/MailShell.tsx:
- Line 255: Update the density preference mutation flow around mutateSettings so
rapid toggles cannot issue overlapping updateMailPreferencesAction requests;
serialize the writes or disable the density control until the current
persistence completes, preserving the latest user-selected value in
EmailAccount.mailListDensity.
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📒 Files selected for processing (14)
apps/web/app/(app)/[emailAccountId]/mail/ListToolbar.tsxapps/web/app/(app)/[emailAccountId]/mail/MailShell.tsxapps/web/app/(app)/[emailAccountId]/mail/ThreadList.tsxapps/web/app/(app)/[emailAccountId]/mail/ThreadRow.tsxapps/web/app/(app)/[emailAccountId]/mail/mail-list-density.test.tsapps/web/app/(app)/[emailAccountId]/mail/mail-list-density.tsapps/web/app/(app)/[emailAccountId]/mail/types.tsapps/web/app/api/mail/settings/route.tsapps/web/lib/shortcuts/registry.tsapps/web/prisma/migrations/20260902220000_add_mail_list_density/migration.sqlapps/web/prisma/schema.prismaapps/web/utils/actions/mail-split.test.tsapps/web/utils/actions/mail-split.tsapps/web/utils/actions/mail-split.validation.ts
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All reported issues were addressed across 14 files
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Serialize density preference writes so overlapping toggles cannot finish out of order, keep the focused row visible when density changes row height, and hide the density control in all-accounts mode like the layout toggle. Co-authored-by: Elie Steinbock <elie222@users.noreply.github.com>
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2 issues found across 3 files (changes from recent commits).
Prompt for AI agents (unresolved issues)
Check if these issues are valid — if so, understand the root cause of each and fix them. If appropriate, use sub-agents to investigate and fix each issue separately.
<file name="apps/web/app/(app)/[emailAccountId]/mail/MailShell.tsx">
<violation number="1" location="apps/web/app/(app)/[emailAccountId]/mail/MailShell.tsx:266">
P2: While the queued action is pending, an SWR revalidation can replace this optimistic value with the old server density. Successful writes never restore the cache, so the toolbar and rows can remain stale; keep persistence in the cache mutation or reconcile the latest queued value after every successful write.</violation>
<violation number="2" location="apps/web/app/(app)/[emailAccountId]/mail/MailShell.tsx:293">
P2: When a density write fails while later toggles are queued, this recovery revalidation can land after a later successful toggle and restore an older density. Await the recovery inside the queue before advancing, then reconcile the latest queued value.</violation>
</file>
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| toast.error( | ||
| error instanceof Error ? error.message : "Couldn't save that", | ||
| ); | ||
| mutateSettings().catch(() => undefined); |
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P2: When a density write fails while later toggles are queued, this recovery revalidation can land after a later successful toggle and restore an older density. Await the recovery inside the queue before advancing, then reconcile the latest queued value.
Prompt for AI agents
Check if this issue is valid — if so, understand the root cause and fix it. At apps/web/app/(app)/[emailAccountId]/mail/MailShell.tsx, line 293:
<comment>When a density write fails while later toggles are queued, this recovery revalidation can land after a later successful toggle and restore an older density. Await the recovery inside the queue before advancing, then reconcile the latest queued value.</comment>
<file context>
@@ -252,28 +261,37 @@ export function MailShell() {
+ toast.error(
+ error instanceof Error ? error.message : "Couldn't save that",
+ );
+ mutateSettings().catch(() => undefined);
+ });
}, [density, emailAccountId, mutateSettings, settings]);
</file context>
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|
||
| // Optimistic UI immediately so rapid toggles still feel instant. | ||
| mutateSettings( | ||
| (current) => ({ ...(current ?? loadedSettings), density: next }), |
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P2: While the queued action is pending, an SWR revalidation can replace this optimistic value with the old server density. Successful writes never restore the cache, so the toolbar and rows can remain stale; keep persistence in the cache mutation or reconcile the latest queued value after every successful write.
Prompt for AI agents
Check if this issue is valid — if so, understand the root cause and fix it. At apps/web/app/(app)/[emailAccountId]/mail/MailShell.tsx, line 266:
<comment>While the queued action is pending, an SWR revalidation can replace this optimistic value with the old server density. Successful writes never restore the cache, so the toolbar and rows can remain stale; keep persistence in the cache mutation or reconcile the latest queued value after every successful write.</comment>
<file context>
@@ -252,28 +261,37 @@ export function MailShell() {
- throw new Error(getActionErrorMessage(result));
- return { ...(current ?? loadedSettings), density: next };
- },
+ (current) => ({ ...(current ?? loadedSettings), density: next }),
{
optimisticData: (current) => ({
</file context>
3 participants
Adds a compact/expanded snippet toggle next to the existing list/split (V) control so thread rows can show ~5 lines of the provider snippet. Works in both Gmail list and Outlook split-pane layouts. Shortcut is D (V is unchanged). Preference is persisted as EmailAccount.mailListDensity. Snippet text only — no full body fetch.
Summary by CodeRabbit
New Features
Bug Fixes
Tests