case-create: surface Gitea repo result + UI retry button

The auto-creation in case_create had two failure modes that combined to
make repos silently missing: a stale GITEA_TOKEN returning 401, and the
outer try/except in case_create that swallowed every exception with a
bare pass. Result: cases like 8174-24 ended up with a local git repo and
Paperclip project but no Gitea repo, with no signal anywhere.

_setup_gitea_remote now returns {ok, url, error} and never raises; the
result is attached to the case JSON and the FastAPI endpoint logs a
warning when ok=false. The UI gets a "צור ריפו ב-Gitea" button on the
case header that appears only when the repo or remote is missing.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

web-ui/src/components/cases/create-repo-button.tsx

@@ -0,0 +1,59 @@
+"use client";
+
+import { toast } from "sonner";
+import { Cloud, Loader2 } from "lucide-react";
+import { Button } from "@/components/ui/button";
+import {
+  useCreateGiteaRepo,
+  useGitStatus,
+  type CaseDetail,
+} from "@/lib/api/cases";
+
+export function CreateRepoButton({ data }: { data?: CaseDetail }) {
+  const { data: gitStatus } = useGitStatus(data?.case_number);
+  const createRepo = useCreateGiteaRepo(data?.case_number);
+
+  if (!data?.case_number || !gitStatus) return null;
+
+  /* Show only when something is actually missing — repo, remote, or
+   * unpushed commits. If everything is in sync, the SyncIndicator already
+   * communicates that. */
+  const needsRepo = gitStatus.error === "no_repo" || !gitStatus.has_remote;
+  if (!needsRepo) return null;
+
+  function handleClick() {
+    if (!data) return;
+    createRepo.mutate(
+      { title: data.title ?? "", description: data.subject ?? "" },
+      {
+        onSuccess: (res) =>
+          toast.success(
+            res.pushed
+              ? `הריפו נוצר ב-Gitea: ${res.repo_url}`
+              : `הריפו נוצר אך ה-push נכשל. בדוק את הלוגים של ה-backend.`,
+          ),
+        onError: (err) =>
+          toast.error(
+            err instanceof Error ? err.message : "יצירת הריפו נכשלה",
+          ),
+      },
+    );
+  }
+
+  return (
+    <Button
+      variant="outline"
+      size="sm"
+      onClick={handleClick}
+      disabled={createRepo.isPending}
+      title="יצירת ריפו ב-Gitea וקישור התיק המקומי אליו"
+    >
+      {createRepo.isPending ? (
+        <Loader2 className="me-1 h-3.5 w-3.5 animate-spin" />
+      ) : (
+        <Cloud className="me-1 h-3.5 w-3.5" />
+      )}
+      צור ריפו ב-Gitea
+    </Button>
+  );
+}