feat: add host-local custom project icons (#2335)

* feat(projects): add local icons and colors

* refactor(projects): simplify appearance handling

* fix(projects): serialize appearance saves

* test(app): update project appearance expectations

* test: fix project appearance CI expectations

* refactor(projects): organize appearance code

* fix(server): adopt main's reconcile model in project appearance updates

* fix(projects): preserve host-local appearance targets

* fix(desktop): restore Linux development startup

Ubuntu can block Electron's unprivileged user-namespace fallback while the npm-installed sandbox helper is not SUID. Disable the Chromium process sandbox only in the Linux development runner so packaged desktop policy remains unchanged.

* feat(projects): add custom project icons

Keep URL acquisition in the client so the host daemon only validates uploaded bytes. Project name and icon changes share one adaptive edit sheet.

* refactor(settings): scope projects by host

---------

Co-authored-by: Mohamed Boudra <boudra.moha@gmail.com>

packages/app/src/components/sidebar-workspace-list.tsx

@@ -57,7 +57,7 @@ import {
 import { useSidebarCollapsedSectionsStore } from "@/stores/sidebar-collapsed-sections-store";
 import { useHostFeatureMap } from "@/runtime/host-features";
 import { useIsCompactFormFactor } from "@/constants/layout";
-import { useProjectIconDataByProjectViewKey } from "@/projects/project-icons";
+import { useProjectIcons } from "@/projects/icons";
 import {
   buildNewWorkspaceRoute,
   buildProjectSettingsRoute,
@@ -1958,7 +1958,7 @@ export function SidebarWorkspaceList({
     () => (groupMode === "status" ? resolveSidebarProjectIconTargets(projects) : []),
     [groupMode, projects],
   );
-  const statusProjectIconByProjectViewKey = useProjectIconDataByProjectViewKey({
+  const statusProjectIconByProjectViewKey = useProjectIcons({
     projects: statusProjectIconTargets,
   });
 
@@ -2127,7 +2127,7 @@ function ProjectModeList({
     [parentGestureRef],
   );
 
-  const projectIconByProjectViewKey = useProjectIconDataByProjectViewKey({
+  const projectIconByProjectViewKey = useProjectIcons({
     projects: projectIconTargets,
   });