Closes#3600. Previously the From header on test emails and notifications
showed only the raw email address. Adds an optional "Sender name" field
so emails appear from a friendly name like "Checkmate notifications"
<user@example.org>.
## Behaviour
- Field is optional. When empty/null/whitespace, the From header falls
back to the raw email address — identical to current behaviour, no
regression for existing installs.
- When set, the email service hands nodemailer { name, address } as the
message from field. Nodemailer handles RFC-5322 encoding (quotes,
commas, non-ASCII) so the display name is safe for any input.
- Unsetting works: clearing the input transforms the value to null in
the Zod parse step, and the settings repository already turns null
values into a $unset operation.
- Both client and server Zod schemas trim and empty-string-to-null,
preventing whitespace-only display names from being stored.
## Surfaces
- AppSettings schema, Settings type, EmailTransportConfig pick, server
Zod validation, client Zod validation, client form defaults, and the
Settings page form all carry the new systemEmailDisplayName field.
- The transport preview pre-block on /settings now includes a `from`
key showing exactly what the email service hands nodemailer — the
string when no display name is set, or { name, address } when it is.
- en.json carries the new label and placeholder. Other locales fall
back until translated (16 locales pending — separate follow-up).
## Conventions conformance (per docs/frontend-conventions.md)
- The pre-block I touched had three rule #1 violations (sx p,
borderRadius, backgroundColor); hoisted those to native props using
theme.shape.borderRadius. Other rule #1 violations elsewhere on this
page are pre-existing and intentionally left alone.
- No new sx-with-native-equivalents introduced.
- No color="text.X" shorthand introduced.
- No theme module import introduced.
Four small follow-ups from a code review pass:
1. Drop the redundant `?? THEMED_RENDERERS[DEFAULT_STATUS_PAGE_THEME]`
fallback in Status/index.tsx — the map is now a total Record, so the
first lookup cannot return undefined.
2. Extract the literal "/status/public" into PUBLIC_STATUS_PAGE_PREFIX in
Types/StatusPage.ts and reuse from the three runtime call sites
(Status/index.tsx, HeaderStatusPageControls.tsx, StatusPagesTable.tsx).
The Routes/index.tsx route definition keeps its string literal — the
route table is otherwise all literals and the prefix only matters when
it's interpolated.
3. Delete two narrating comments above the public/admin branches in
Status/index.tsx — the JSX is self-describing.
4. Move the inline `style` object construction in StatusPageThemeProvider
into the existing useMemo so the wrapper div receives a stable style
reference. The previous spread defeated the surrounding memoization on
every render.
Alex Holliday
Marcos Paulo Diniz
Harshitbro-ctrlv
harsh-aghara
Ian Troisi
joaquimpeixoto
gorkem-bwl