feat(lanes): surface child worktrees on a lane card + detect Superpowers skills

Adopting the main repo as its own lane now gets stage detection
(cwd matches, same as any other lane), and its card lists every
managed-worktree lane provisioned from it with a jump-to link.
Also add the two missing Skill-tool detect rules (implement, ship)
so detection covers all four Superpowers workflow phases, not just
plan/review.

client/src/components/lanes/__tests__/LaneCard.test.tsx

@@ -54,6 +54,7 @@ function makeLane(overrides: Partial<Lane> = {}): Lane {
     cwd: "/work/demo",
     branch: "lane/demo",
     kind: "adopted",
+    source_repo: null,
     pipeline: "default",
     session_id: null,
     run_id: null,
@@ -90,6 +91,31 @@ describe("LaneCard status badge", () => {
   }
 });
 
+describe("LaneCard child worktrees", () => {
+  it("lists worktrees provisioned from this lane and jumps to one on click", async () => {
+    const onSelectLane = vi.fn();
+    const worktree = makeLane({ id: 8, title: "Worktree A", status: "running" });
+    render(
+      <LaneCard
+        lane={makeLane({ id: 1 })}
+        onAction={vi.fn()}
+        childWorktrees={[worktree]}
+        onSelectLane={onSelectLane}
+      />
+    );
+
+    expect(screen.getByTestId("lane-child-worktrees")).toBeInTheDocument();
+    const user = userEvent.setup();
+    await user.click(screen.getByRole("button", { name: /Worktree A/ }));
+    expect(onSelectLane).toHaveBeenCalledWith(8);
+  });
+
+  it("renders nothing when there are no child worktrees", () => {
+    render(<LaneCard lane={makeLane({ id: 1 })} onAction={vi.fn()} />);
+    expect(screen.queryByTestId("lane-child-worktrees")).not.toBeInTheDocument();
+  });
+});
+
 const pipelineNodes: Lane["pipeline_nodes"] = [
   { id: "intake", label: "intake", icon: "📥", gate: false, state: "done" },
   { id: "plan", label: "plan", icon: "🧭", gate: false, state: "done" },