`dsh.title` was a manifest field this branch introduced: the manager read
it for `listBundles` and `inspect`, and the Web page showed it over the
package name. A bundle is named by its package name now, so `DshManifest`
keeps only its shipped fields, the page derives every heading from the
name, and the install dialog's subject line reads the name the Host
answered. The two e2e fixtures drop their titles and the manager lane's
goldens follow.
Add the Manage plugins tab (ui-settings-plugin-manager): package cards
with enable/disable switches, retry and uninstall, an install dialog
streaming pnpm output, and the selected preset's composition with per-row
switches and removal; the read-only list gains provenance facts.
Settings cards edit one scope at a time: ui-settings keeps one describe
mirror per settings scope (SettingsMirrorRegistry) and binds
{ namespace, scope }; ui-settings-plugins stages forms per scope, marks
inherited fields, and adds the skill-filesystem roots card.
Fixes surfaced by driving the browser end to end: the client gateway now
lets a call omit trailing parameters that accept undefined (PR3's
optional scope arguments failed the strict arity check), the plugins
install verb is `add` because the client namespace service reserves
`install`/`remove` (guarded by remote-method-names.host.spec), a plugin
module offers its main export as an addable `.`, and describing a settings
scope no owner registered resolves over the global instance's base and
never throws.
The web e2e scaffold can mount a profile runtime over fixture packages;
plugin-manager.e2e drives the tab and writes one field under a preset
scope; plugin-config and settings-chrome goldens are refreshed.
Turtle