Close gaps: GLM-judge (anthropic registry) + run cancel + deep-link

#2 GLM judge (closes #114): registry NamedProvider gains a `format` field;
build_provider_registry builds an AnthropicProvider for format="anthropic".
GLM's coding/OpenAI endpoint is ToS-throttled for raw SDK, but its Anthropic
endpoint (api.z.ai/api/anthropic) accepts raw API calls (verified x-api-key
-> glm-4.7), so CLAWMATES_JUDGE_MODEL=glm:glm-4.7 routes the door governor /
topology judge through GLM with no runtime-routing. (Kimi-as-judge still needs
a Platform key — coding key is agent-only.)

#3 run-control: POST /api/topology-runs/{id}/cancel (workspace-scoped,
queued/running only); the worker honors it at the step boundary (checks
current_status in the checkpoint callback) and won't clobber a cancel with
`failed`. Frontend Run tab gains a Cancel button and clickable recent runs
that deep-link into a live/replayed stream (SSE replays from checkpoint).

cm-* tests (incl. new cancel test) + clippy + frontend lint/typecheck green.

Co-Authored-By: Claude Opus 4.8 <[email protected]>

frontend/src/components/topology/TopologyRun.tsx

@@ -43,6 +43,7 @@ export function TopologyRun({ catalog }: { catalog: CatalogEntry[] }) {
   const [busy, setBusy] = useState(false);
   const [error, setError] = useState<string | null>(null);
   const [runs, setRuns] = useState<RunSummary[]>([]);
+  const [runId, setRunId] = useState<string | null>(null);
   const esRef = useRef<EventSource | null>(null);
 
   async function loadRuns() {
@@ -68,6 +69,7 @@ export function TopologyRun({ catalog }: { catalog: CatalogEntry[] }) {
    *  browser auto-sends Last-Event-ID on reconnect so the server resumes. */
   function stream(id: string) {
     esRef.current?.close();
+    setRunId(id);
     const es = new EventSource(`/api/topology-runs/${id}/events`);
     esRef.current = es;
     setStatus("running");
@@ -139,6 +141,27 @@ export function TopologyRun({ catalog }: { catalog: CatalogEntry[] }) {
     }
   }
 
+  /** Request cancellation; the SSE `done` event reports the cancelled status. */
+  async function cancel() {
+    if (!runId) return;
+    try {
+      await fetch(`/api/topology-runs/${runId}/cancel`, { method: "POST" });
+    } catch {
+      /* the worker also stops on the next status read */
+    }
+  }
+
+  /** Deep-link into a past/running run: the SSE endpoint replays its steps from
+   *  the checkpoint, then tails live if it's still running. */
+  function openRun(id: string) {
+    setError(null);
+    setSteps([]);
+    setFinalOutput(null);
+    setStatus("running");
+    setBusy(true);
+    stream(id);
+  }
+
   const started = status !== null;
 
   return (
@@ -175,7 +198,7 @@ export function TopologyRun({ catalog }: { catalog: CatalogEntry[] }) {
           />
         </label>
       </div>
-      <div>
+      <div className="flex gap-2">
         <button
           type="button"
           onClick={run}
@@ -184,6 +207,15 @@ export function TopologyRun({ catalog }: { catalog: CatalogEntry[] }) {
         >
           {busy ? "Running…" : "Run topology"}
         </button>
+        {busy ? (
+          <button
+            type="button"
+            onClick={cancel}
+            className="rounded-lg border border-border px-4 py-2 text-sm text-muted-foreground hover:text-foreground"
+          >
+            Cancel
+          </button>
+        ) : null}
       </div>
 
       {error ? <p className="text-sm text-red-500">{error}</p> : null}
@@ -230,16 +262,22 @@ export function TopologyRun({ catalog }: { catalog: CatalogEntry[] }) {
           <p className="mb-2 text-xs font-medium text-muted-foreground">Recent runs</p>
           <ul className="flex flex-col gap-1">
             {runs.slice(0, 8).map((r) => (
-              <li key={r.id} className="flex items-center gap-2 text-xs text-muted-foreground">
-                <span
-                  className={`rounded-full px-2 py-0.5 ${
-                    STATUS_STYLE[r.status] ?? "bg-muted text-muted-foreground"
-                  }`}
+              <li key={r.id}>
+                <button
+                  type="button"
+                  onClick={() => openRun(r.id)}
+                  className="flex w-full items-center gap-2 rounded-md px-1 py-1 text-left text-xs text-muted-foreground hover:bg-muted/40"
                 >
-                  {r.status}
-                </span>
-                <span className="text-foreground">{r.kind}</span>
-                <span className="truncate">{r.task}</span>
+                  <span
+                    className={`rounded-full px-2 py-0.5 ${
+                      STATUS_STYLE[r.status] ?? "bg-muted text-muted-foreground"
+                    }`}
+                  >
+                    {r.status}
+                  </span>
+                  <span className="text-foreground">{r.kind}</span>
+                  <span className="truncate">{r.task}</span>
+                </button>
               </li>
             ))}
           </ul>