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

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

packages/app/src/runtime/directory-sync/workspace-replica.ts

@@ -43,6 +43,7 @@ function applyProjectDelta(
       ...workspace,
       projectDisplayName: project.projectDisplayName,
       projectCustomName: project.projectCustomName,
+      projectCustomIconRevision: project.projectCustomIconRevision,
       projectRootPath: project.projectRootPath,
       projectKind: project.projectKind,
     });

packages/app/src/runtime/replica-cache/index.ts

@@ -196,6 +196,7 @@ function serializeWorkspace(workspace: WorkspaceDescriptor): WorkspaceDescriptor
     projectId: workspace.projectId,
     projectDisplayName: workspace.projectDisplayName,
     projectCustomName: workspace.projectCustomName ?? null,
+    projectCustomIconRevision: workspace.projectCustomIconRevision ?? null,
     projectRootPath: workspace.projectRootPath,
     workspaceDirectory: workspace.workspaceDirectory,
     projectKind: workspace.projectKind,