Feature modules in a new app, i18n rename, and what the first area port needed

- create-waybetter: the generated app has a feature table (one area, one feature, three modes), a feature module, the registry in its runtime, the cards and the first-run screen in its panel
- waybetter i18n rename --map <file> [--copy]: keys move or are copied in every catalog with each language's own value
- feature context: win (no globals in a module), text() for a feature's words (t('...') is read as a whole catalog key by the i18n tools)
- probes: `when` (only counts while the part of the page it lives in is there)
- cards: a caret, an empty area says its features come later; the first-run screen takes the whole panel

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

packages/shell/src/panel/panelMessages.ts

@@ -294,6 +294,7 @@ export const PANEL_MESSAGES = {
   'wb.features.ownCopyAsk': 'Your own copy of {name} is on. Turn it off and use the built-in one?',
   'wb.features.pluginFile': 'plugin file',
   'wb.features.settingsNoTab': 'Open a {site} tab first, then choose Settings again.',
+  'wb.features.soon': 'Its features arrive in a later update.',
   'wb.features.useBuiltIn': 'Use the built-in one',
   'wb.fonts.asSite': 'As {site} draws it',
   'wb.fonts.builtIn': 'Built-in & system',
@@ -468,7 +469,7 @@ export const PANEL_MESSAGES = {
   'wb.modes.current': 'in use',
   'wb.modes.existing': 'You already set {app} up. Nothing changes unless you pick a mode.',
   'wb.modes.keep': 'Keep my changes',
-  'wb.modes.keepHint': '{count, plural, one {# setting you changed would be replaced.} other {# settings you changed would be replaced.}}',
+  'wb.modes.keepHint': 'Changed by hand: {count}. Those would be replaced.',
   'wb.modes.keepQuestion': 'Keep your manual changes?',
   'wb.modes.keepSetup': 'Keep my current setup',
   'wb.modes.lede': 'Pick a starting point. Every plugin and feature stays individually switchable, and you can change the mode later in Settings.',