Merge PR #1510

# Conflicts:
#	crates/ui-egui/locales/de-formats.json
#	crates/ui-egui/locales/es-formats.json
#	crates/ui-egui/locales/fr-formats.json
#	crates/ui-egui/locales/ja-formats.json
#	crates/ui-egui/locales/pt-br-formats.json
#	crates/ui-egui/locales/ru-formats.json
#	crates/ui-egui/locales/uk-formats.json
#	crates/ui-egui/locales/zh-hans-formats.json
#	crates/ui-egui/locales/zh-hant-formats.json
#	crates/ui-egui/src/lib.rs
#	docs/parity-checklist.md

docs/faces.md

@@ -268,6 +268,13 @@ To name a group: click faces to select them (Shift-click selects a range, **Sele
 name in the bar that appears (people already named complete as you type), press Enter: all of them are named at once, as
 one undo step. Selecting names nothing.
 
+Right-click a person's card, or use **Rename Person…** on their page, to rename every face of that person in the library
+at once (`faces.renamePerson`). The name is matched the way the cards are grouped (trimmed, ignoring capitalization) and
+every matching face is stored with the exact new spelling, so a change of capitalization alone updates them all. The
+dialog says how many faces that is. If the new name is already someone else, it refuses until **Combine with the existing
+person** is ticked; that makes one person, and Undo separates them again. Cancelling changes nothing. A person filter,
+the open person page and the way back to it follow the new name. Nothing is written back to the files.
+
 The thumbnail-size slider in the bottom bar sizes the faces here too, with limits of their own. Every face is shown by the
 same kind of box: the detector's own box once the scan has looked at it (kept beside its embedding), so a loosely drawn box
 from another tool does not make one face look farther away than the next; before the scan has looked at a face it is shown
@@ -332,7 +339,7 @@ reuses the pictures of its step instead of rendering every face again.
 
 All of this is reachable from the control channel, the CLI and MCP: `faces.models.list`, `faces.models.inspect {path}`,
 `faces.models.install {path, acknowledged: true, activate?}`, `faces.models.download {id, acknowledged: true}` (then `faces.models.downloads`, which also installs what has arrived, and `faces.models.downloadCancel {id}`), `faces.models.remove {id}`, `faces.models.select {id}`,
-`faces.enable {enabled?}`, `faces.detect {ids?, apply?}`, `faces.index {budgetMs?, ids?}`, `faces.pump` (what the app calls every frame), `faces.suggest {ids?, threshold?, margin?}`, `faces.person {name, more?}` (a person's faces and the unnamed faces that look like them), `faces.unnamed {limit?}` (every unnamed face, look-alikes together, with suggested names), `faces.setName {id?, index, name}`, `faces.nameFaces {faces: [{photo, index}], name}` (name many at once, one undo step) and `faces.evaluate`. `acknowledged` must be `true`: the caller has shown the user the terms and the user agreed. Installing makes the model the one in use and switches recognition on unless `activate` is `false`.
+`faces.enable {enabled?}`, `faces.detect {ids?, apply?}`, `faces.index {budgetMs?, ids?}`, `faces.pump` (what the app calls every frame), `faces.suggest {ids?, threshold?, margin?}`, `faces.person {name, more?}` (a person's faces and the unnamed faces that look like them), `faces.unnamed {limit?}` (every unnamed face, look-alikes together, with suggested names), `faces.setName {id?, index, name}`, `faces.nameFaces {faces: [{photo, index}], name}` (name many at once, one undo step), `faces.renamePerson {from, to, merge?}` (rename every in-library face of one person, or merge two when `merge` is true, one undo step) and `faces.evaluate`. `acknowledged` must be `true`: the caller has shown the user the terms and the user agreed. Installing makes the model the one in use and switches recognition on unless `activate` is `false`.
 
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