Move Elsewhen into Omarchy as omarchy.elsewhen (#13429)

* Move Elsewhen into Omarchy as omarchy.elsewhen

The world clock ships in the shell tree instead of its own package. A
migration renames existing bar entries with their settings and removes
the retired package.

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

* Remove Elsewhen's shelved Earth row, overlap band and sky tint

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

* Tidy Elsewhen's models, data helper and docs, and drop currency

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

* Restructure Elsewhen's panel and globe on the shared shell components

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

* Show Elsewhen's bar globe upright

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

* Use the shared city search for Elsewhen's globe jump bar

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

* Keep legacy Elsewhen entries single and retry offline geocodes

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

* Fetch Elsewhen's weather with curl instead of a Python helper

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

---------

Co-authored-by: Claude Opus 5.5 <noreply@anthropic.com>

docs/omarchy-shell.md

@@ -100,7 +100,7 @@ The lower-level IPC methods remain available through `omarchy-shell shell ...`.
 
 ## Elsewhen
 
-Elsewhen (`omacom.elsewhen`) ships in the `elsewhen` package at `/usr/share/omarchy/shell/plugins/omacom.elsewhen`, where the shell discovers it automatically. New installs place it immediately before the clock; the migration uses `omarchy bar put omacom.elsewhen --before omarchy.clock`, which preserves an existing placement and uses Elsewhen's normal right-side placement if the clock is absent. Existing plugin directories and symlinks are left intact. The normal update flow restarts the shell after migrations; the migration does not interrupt plugin loading with an immediate restart. With no shell to ask, as in an update from a TTY, the migration installs the package and skips the placement rather than failing the update; `omarchy bar put omacom.elsewhen --before omarchy.clock` places the widget later.
+Elsewhen (`omarchy.elsewhen`), the world clock, is a first-party plugin in `shell/plugins/panels/elsewhen/`; [`elsewhen.md`](elsewhen.md) covers how it works. It shipped as the separate `elsewhen` package under the id `omacom.elsewhen` until it moved in. New installs place it immediately before the clock; the placement migration uses `omarchy bar put omarchy.elsewhen --before omarchy.clock`, which preserves an existing placement and uses Elsewhen's normal right-side placement if the clock is absent. With no shell to ask, as in an update from a TTY, it skips the placement rather than failing the update. A later migration renames existing `omacom.elsewhen` entries in `shell.json`, keeping their settings, and removes the retired package and any dev-checkout link to its `/usr/share/omarchy` path, leaving links and checkouts the user made alone.
 
 ## IPC