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/i18n/resources/en.ts

@@ -1632,6 +1632,7 @@ export const en = {
       vimHint: "Applies to source files on web and desktop.",
     },
     hostSections: {
+      projects: "Projects",
       connections: "Connections",
       agents: "Agents",
       workspaces: "Workspaces",
@@ -2133,24 +2134,23 @@ export const en = {
       },
     },
     project: {
-      noEditableTarget: "We don't have an editable copy of this project on any connected host.",
+      noEditableTarget: "This project isn't editable on this host.",
       backToProjects: "Back to projects",
-      switchHost: "Switch host",
-      rename: {
-        renamedToast: "Project renamed",
-        errorFallback: "Couldn't rename project",
-        renameLabel: "Rename project",
-        resetLabel: "Reset project name to default",
-        projectNameLabel: "Project name",
-        saveLabel: "Save project name",
-        cancelLabel: "Cancel renaming",
-        reset: "Reset",
+      edit: {
+        title: "Edit project",
+        name: "Name",
+        nameLabel: "Project name",
+        icon: "Icon",
+        chooseImage: "Choose image",
+        useAutomatic: "Use automatic",
+        imageUrl: "Image or website URL",
+        save: "Save changes",
+        savedToast: "Project updated",
       },
       readFailures: {
         invalidTitle: "paseo.json couldn't be parsed",
         invalidDescription: "Fix the file on disk, then reload.",
         missingTitle: "This host doesn't have this project",
-        missingWithHosts: "Switch to another host above, or reload.",
         missingSingleHost: "The selected host has no record of this project.",
         transportTitle: "Couldn't load paseo.json",
         transportFallback: "The host didn't respond.",