feat: open module configuration from the store install bar

[xihale]

The store detail page's install bar shows "Reinstall" when a module is installed and current — but at that point the reader usually wants to configure the module they just installed, not install it again.

Replace that resting button with "Manage", which opens the module's configuration screen (the same Scope screen the module list opens). It appears only when the module is installed, current, and the host has read its user id — so first installs and updates still get the install button, and LSPatch (no install host) is unaffected.

The installed copy's user id is plumbed through StoreInstallHost → RepoDetailsViewModel → RepoDetailsScreen, derived from appInfo.uid / PER_USER_RANGE the same way the module list and package broadcasts already do.

Also drops the now-unused store_reinstall string across all locales.

[xihale]

Effect