Automatically import and update project repository skills (#16066)

Automatically import skills from new GitHub project repositories and update enabled sources in the background. Preserve project-derived access, saved selections, immutable execution versions and explicit pins; add legacy adoption, refresh and connection repair in Sources.

Include durable scheduling and bounded work credits, production Storybook journeys, real GitHub-to-routine acceptance receipts and final-head CI/security/Greptile qualification.

Co-Authored-By: Paperclip <noreply@paperclip.ing>

ui/src/components/skill-studio/ProjectSkillRepositoryRow.tsx

@@ -0,0 +1,27 @@
+import type { ProjectSkillRepository } from '@paperclipai/shared';
+import { GithubIcon } from '@/components/icons/github-icon';
+import { Button } from '@/components/ui/button';
+import { Link } from '@/lib/router';
+
+export function ProjectSkillRepositoryRow({ repository, pending, onImport }: {
+  repository: ProjectSkillRepository;
+  pending?: boolean;
+  onImport: () => void;
+}) {
+  const importing = pending || repository.status === 'pending';
+  return <section className="flex flex-col gap-2 py-3" aria-label={`Skills from ${repository.projectName}`}>
+    <div className="flex items-center gap-3">
+      <GithubIcon className="size-5 shrink-0 text-muted-foreground" />
+      <div className="min-w-0 flex-1">
+        <a href={repository.repositoryUrl} target="_blank" rel="noreferrer" className="block truncate text-sm font-medium hover:underline">
+          {repository.repositoryUrl.replace('https://github.com/', '')}
+        </a>
+        <p className="truncate text-xs text-muted-foreground">{repository.projectName} · {repository.trackingRef === 'HEAD' ? 'Default branch' : repository.trackingRef}{repository.projectVisibility === 'private' ? ' · Project access' : ''}</p>
+      </div>
+      <Button size="sm" variant="outline" disabled={importing} onClick={onImport}>
+        {importing ? 'Importing…' : repository.status === 'error' ? 'Retry import' : 'Import skills'}
+      </Button>
+    </div>
+    {repository.lastError && <p role="alert" className="text-sm text-destructive">{repository.lastError} <Link to="/apps" className="underline">Manage GitHub connection</Link></p>}
+  </section>;
+}