Review fixes for "place new, child and web tabs into groups".
- Spawned tabs follow their parent only with the new synced setting
spawnedTabsFollowParent (App Settings > Appearance > Tabs, off by default).
TabLayoutService.sessionCreated() reads it fresh through a
childrenFollowParent dep: off, a spawned session lands after its parent and
is marked manual in the same write; on, it follows until moved by hand. The
row menu shows the placement note and "Follow parent again" only when on.
"New session" in a group menu is unaffected. zh-CN label and a
Settings-Reference row.
- applyLegacySessionRank marks a child manual only when the requested order
splits it from its parent's block. A PUT of the current order, or one that
moves a family together, leaves every stored placement alone.
- The browser never echoes a create or delete through PUT /api/session-order,
with or without groups: the layout service already re-projects the order and
broadcasts it, and syncSessionOrder adopts it.
- The placement note in the row menu is plain text described by the menu, not
a focusable menu item.
- A tab that first appears inside a collapsed group briefly marks that group's
header.
- i18n skips .tab-name, so tab names are never translated.
- Tests: legacy-order cases for an unchanged order, a family reorder and a
split; service cases for the setting and for order PUTs; the scheduled
registration test now exercises register/undo; the grouped-create test binds
port 0; one route case runs through the real layout service.
Aamer Akhter