feat(dashboard): Recent activity events route to entity by kind

SP21 Task 2.5 — the Dashboard's 'Recent activity' card now routes clicks
to the matching entity drawer / page by event kind:

  - claim_*       → /claims?claim=<id>  (drawer in Phase 5)
  - provider_added → /providers?provider=<npi>  (ProviderDrawer)
  - remit_received → toast 'coming in a later phase' (RemitDrawer in Phase 4)
  - anything else  → toast (manual_match, unknown kinds)

Implementation:
  - New src/lib/event-routing.ts with the eventKindToUrl() helper,
    plus a unit test covering all 6 + default branches.
  - src/components/ActivityFeed.tsx gains an optional onItemClick
    prop; when set, each row gets role='button', tabIndex=0, the
    drillable hover affordance (chevron + tint), and an Enter/Space
    keybinding. e.stopPropagation() is called before the handler so a
    parent row click can't double-fire (same fix as Task 2.4).
  - src/pages/Dashboard.tsx wires the handler on the 'Recent activity'
    card via eventKindToUrl + sonner toast for unhandled kinds.
  - Backend: CycloneStore.recent_activity() now exposes claimId and
    remittanceId on each row (read from ActivityEvent.claim_id /
    remittance_id) so the routing helper has the entity ids it needs.
  - The frontend Activity interface gains optional claimId /
    remittanceId fields; the in-memory sample data and the
    addClaim store action populate them so the dashboard works in
    both API-configured and sample-data modes.

backend/src/cyclone/store.py

@@ -1668,7 +1668,16 @@ class CycloneStore:
             return list(by_npi.values())
 
     def recent_activity(self, *, limit: int = 200) -> list[dict]:
-        """Return recent activity events from the DB, newest first."""
+        """Return recent activity events from the DB, newest first.
+
+        SP21 Task 2.5: each row also carries ``claimId`` and
+        ``remittanceId`` (read from the ORM columns) so the Dashboard's
+        Recent-activity card can route clicks to the right entity
+        drawer via ``src/lib/event-routing.ts``. Both are nullable
+        strings; the wire shape uses camelCase keys to match the
+        existing ``npi`` / ``amount`` fields and the frontend
+        ``Activity`` interface.
+        """
         with db.SessionLocal()() as s:
             rows = (
                 s.query(ActivityEvent)
@@ -1684,6 +1693,8 @@ class CycloneStore:
                     "timestamp": r.ts.isoformat().replace("+00:00", "Z"),
                     "npi": (r.payload_json or {}).get("npi"),
                     "amount": (r.payload_json or {}).get("amount"),
+                    "claimId": r.claim_id,
+                    "remittanceId": r.remittance_id,
                 }
                 for r in rows
             ]

src/components/ActivityFeed.test.tsx

@@ -1,11 +1,15 @@
 // @vitest-environment happy-dom
 (globalThis as { IS_REACT_ACT_ENVIRONMENT?: boolean }).IS_REACT_ACT_ENVIRONMENT = true;
 
-import { describe, expect, it } from "vitest";
-import { render, screen } from "@testing-library/react";
+import { afterEach, describe, expect, it, vi } from "vitest";
+import { cleanup, fireEvent, render, screen } from "@testing-library/react";
 import { ActivityFeed } from "./ActivityFeed";
 import type { Activity } from "@/types";
 
+// happy-dom keeps `document.body` between tests; without cleanup,
+// `screen.getByRole("button")` finds buttons from earlier renders.
+afterEach(() => cleanup());
+
 const baseActivity: Activity = {
   id: "a-1",
   kind: "claim_submitted",
@@ -47,4 +51,99 @@ describe("ActivityFeed", () => {
     expect(() => render(<ActivityFeed items={[unknown]} />)).not.toThrow();
     expect(screen.getByText("future_kind event arrived")).toBeTruthy();
   });
+
+  // -------------------------------------------------------------------
+  // SP21 Task 2.5: optional `onItemClick` prop makes each row a
+  // drillable target. Default behavior (no handler) must stay unchanged.
+  // -------------------------------------------------------------------
+
+  it("does not attach row-level click attrs when onItemClick is omitted", () => {
+    render(<ActivityFeed items={[baseActivity]} />);
+    const li = screen.getByRole("listitem");
+    expect(li.getAttribute("role")).not.toBe("button");
+    expect(li.getAttribute("tabindex")).toBeNull();
+    expect(li.classList.contains("drillable")).toBe(false);
+  });
+
+  it("attaches role/tabIndex/drillable class when onItemClick is provided", () => {
+    render(
+      <ActivityFeed
+        items={[baseActivity]}
+        onItemClick={() => {}}
+      />,
+    );
+    const li = screen.getByRole("button", { name: /View claim submitted/ });
+    expect(li.tagName).toBe("LI");
+    expect(li.getAttribute("tabindex")).toBe("0");
+    expect(li.classList.contains("drillable")).toBe(true);
+  });
+
+  it("calls onItemClick with the event on click", () => {
+    const onItemClick = vi.fn();
+    render(
+      <ActivityFeed
+        items={[baseActivity]}
+        onItemClick={onItemClick}
+      />,
+    );
+    const li = screen.getByRole("button");
+    fireEvent.click(li);
+    expect(onItemClick).toHaveBeenCalledTimes(1);
+    expect(onItemClick).toHaveBeenCalledWith(baseActivity);
+  });
+
+  it("calls onItemClick on Enter keydown", () => {
+    const onItemClick = vi.fn();
+    render(
+      <ActivityFeed
+        items={[baseActivity]}
+        onItemClick={onItemClick}
+      />,
+    );
+    const li = screen.getByRole("button");
+    fireEvent.keyDown(li, { key: "Enter" });
+    expect(onItemClick).toHaveBeenCalledTimes(1);
+    expect(onItemClick).toHaveBeenCalledWith(baseActivity);
+  });
+
+  it("calls onItemClick on Space keydown", () => {
+    const onItemClick = vi.fn();
+    render(
+      <ActivityFeed
+        items={[baseActivity]}
+        onItemClick={onItemClick}
+      />,
+    );
+    fireEvent.keyDown(screen.getByRole("button"), { key: " " });
+    expect(onItemClick).toHaveBeenCalledTimes(1);
+  });
+
+  it("does not call onItemClick for unrelated keys", () => {
+    const onItemClick = vi.fn();
+    render(
+      <ActivityFeed
+        items={[baseActivity]}
+        onItemClick={onItemClick}
+      />,
+    );
+    fireEvent.keyDown(screen.getByRole("button"), { key: "a" });
+    expect(onItemClick).not.toHaveBeenCalled();
+  });
+
+  // Regression for the Task 2.4 event-bubbling pattern: clicks on a
+  // drillable row must not bubble to a parent row click. Without
+  // stopPropagation a Dashboard parent handler could fire alongside
+  // the row click and corrupt history.
+  it("stops click propagation so a parent row handler does not also fire", () => {
+    const onItemClick = vi.fn();
+    const parentClick = vi.fn();
+    render(
+      <ul onClick={parentClick}>
+        <ActivityFeed items={[baseActivity]} onItemClick={onItemClick} />
+      </ul>,
+    );
+    fireEvent.click(screen.getByRole("button"));
+    expect(onItemClick).toHaveBeenCalledTimes(1);
+    expect(parentClick).not.toHaveBeenCalled();
+  });
 });

src/components/ActivityFeed.tsx

@@ -1,3 +1,4 @@
+import type { KeyboardEvent, MouseEvent } from "react";
 import {
   Banknote,
   CheckCircle2,
@@ -63,9 +64,22 @@ const FALLBACK_KIND: { icon: LucideIcon; tone: string; tint: string } = {
 export function ActivityFeed({
   items,
   emptyMessage = "No activity yet.",
+  onItemClick,
 }: {
   items: Activity[];
   emptyMessage?: string;
+  /**
+   * Optional click handler for SP21 Universal Drill-Down (Task 2.5).
+   * When provided, each row becomes a clickable target: the row's
+   * outer `<li>` gets `role="button"`, `tabIndex`, the `drillable`
+   * hover affordance (chevron + tint), and an Enter/Space keybinding.
+   *
+   * `e.stopPropagation()` is called before invoking the handler so the
+   * click doesn't bubble to a hypothetical parent row click — same
+   * fix that landed on `DrillableCell` in Task 2.4. When omitted, the
+   * feed renders exactly as before (no extra DOM, no extra attrs).
+   */
+  onItemClick?: (event: Activity) => void;
 }) {
   if (items.length === 0) {
     return (
@@ -79,11 +93,36 @@ export function ActivityFeed({
       {items.map((a) => {
         const cfg = kindConfig[a.kind] ?? FALLBACK_KIND;
         const Icon = cfg.icon;
+        // SP21 Task 2.5: when a click handler is wired, the row
+        // becomes a keyboard-focusable button-like element with the
+        // drillable hover affordance. We attach the handler to the
+        // <li> directly (matching the Dashboard's existing patterns
+        // for "Top providers" / "Recent denials" rows) so the click
+        // target covers the full row width including padding.
+        const rowProps = onItemClick
+          ? {
+              role: "button" as const,
+              tabIndex: 0,
+              "aria-label": `View ${a.kind.replace(/_/g, " ")}: ${a.message}`,
+              className:
+                "drillable flex items-start gap-3 py-3 first:pt-0 last:pb-0 rounded-sm focus-visible:outline-none focus-visible:ring-2 focus-visible:ring-ring focus-visible:ring-offset-1",
+              onClick: (e: MouseEvent<HTMLLIElement>) => {
+                e.stopPropagation();
+                onItemClick(a);
+              },
+              onKeyDown: (e: KeyboardEvent<HTMLLIElement>) => {
+                if (e.key === "Enter" || e.key === " ") {
+                  e.preventDefault();
+                  e.stopPropagation();
+                  onItemClick(a);
+                }
+              },
+            }
+          : {
+              className: "flex items-start gap-3 py-3 first:pt-0 last:pb-0",
+            };
         return (
-          <li
-            key={a.id}
-            className="flex items-start gap-3 py-3 first:pt-0 last:pb-0"
-          >
+          <li key={a.id} {...rowProps}>
             <div
               className={cn(
                 "mt-0.5 h-7 w-7 shrink-0 rounded-md ring-1 ring-inset ring-border/40 flex items-center justify-center",

src/data/sampleData.ts

@@ -164,6 +164,12 @@ function buildActivity(claims: Claim[]): Activity[] {
       timestamp: c.submissionDate,
       npi: c.providerNpi,
       amount: c.billedAmount,
+      // SP21 Task 2.5: mirror the backend `recent_activity()` wire
+      // shape so the Dashboard routing helper can find the claim id.
+      // Sample-data remits are never a 1:1 Activity row, so the
+      // remittance id is always null here.
+      claimId: c.id,
+      remittanceId: null,
     };
   });
   return events.sort(

src/lib/event-routing.test.ts

@@ -0,0 +1,86 @@
+import { describe, expect, it } from "vitest";
+import { eventKindToUrl, type RoutableEvent } from "./event-routing";
+
+// A minimal event factory keeps the assertions short and keeps the
+// focus on what the helper actually inspects (kind + the relevant
+// entity-id field for that kind).
+function evt(overrides: Partial<RoutableEvent> & { kind: RoutableEvent["kind"] }): RoutableEvent {
+  return {
+    claimId: null,
+    remittanceId: null,
+    npi: undefined,
+    ...overrides,
+  };
+}
+
+describe("eventKindToUrl", () => {
+  // ----- claim_* → /claims?claim=ID -------------------------------
+  it("routes claim_submitted to /claims?claim=ID", () => {
+    expect(
+      eventKindToUrl(evt({ kind: "claim_submitted", claimId: "CLM-1" })),
+    ).toBe("/claims?claim=CLM-1");
+  });
+
+  it("routes claim_paid to /claims?claim=ID", () => {
+    expect(
+      eventKindToUrl(evt({ kind: "claim_paid", claimId: "CLM-2" })),
+    ).toBe("/claims?claim=CLM-2");
+  });
+
+  it("routes claim_denied to /claims?claim=ID", () => {
+    expect(
+      eventKindToUrl(evt({ kind: "claim_denied", claimId: "CLM-3" })),
+    ).toBe("/claims?claim=CLM-3");
+  });
+
+  it("routes claim_accepted to /claims?claim=ID", () => {
+    expect(
+      eventKindToUrl(evt({ kind: "claim_accepted", claimId: "CLM-4" })),
+    ).toBe("/claims?claim=CLM-4");
+  });
+
+  it("percent-encodes the claim id when it contains special chars", () => {
+    expect(
+      eventKindToUrl(evt({ kind: "claim_paid", claimId: "CLM/1+2" })),
+    ).toBe("/claims?claim=CLM%2F1%2B2");
+  });
+
+  it("returns null for claim_* when claimId is missing", () => {
+    expect(
+      eventKindToUrl(evt({ kind: "claim_paid", claimId: null })),
+    ).toBeNull();
+    expect(
+      eventKindToUrl(evt({ kind: "claim_paid", claimId: undefined })),
+    ).toBeNull();
+  });
+
+  // ----- remit_received → null (Phase 4) --------------------------
+  it("returns null for remit_received (Phase 4 drawer not built yet)", () => {
+    expect(
+      eventKindToUrl(evt({ kind: "remit_received", remittanceId: "REM-1" })),
+    ).toBeNull();
+  });
+
+  // ----- provider_added → /providers?provider=NPI -----------------
+  it("routes provider_added to /providers?provider=NPI", () => {
+    expect(
+      eventKindToUrl(evt({ kind: "provider_added", npi: "1730187395" })),
+    ).toBe("/providers?provider=1730187395");
+  });
+
+  it("returns null for provider_added when npi is missing", () => {
+    expect(eventKindToUrl(evt({ kind: "provider_added", npi: undefined }))).toBeNull();
+  });
+
+  // ----- default branch ------------------------------------------
+  it("returns null for unhandled kinds (manual_match)", () => {
+    expect(eventKindToUrl(evt({ kind: "manual_match" }))).toBeNull();
+  });
+
+  it("returns null for unknown kinds (defensive default)", () => {
+    // Cast through unknown so the type-checker doesn't widen the
+    // literal away from the exhaustive union.
+    const unknown = { kind: "future_kind" } as unknown as RoutableEvent;
+    expect(eventKindToUrl(unknown)).toBeNull();
+  });
+});

src/lib/event-routing.ts

@@ -0,0 +1,55 @@
+import type { Activity } from "@/types";
+
+/**
+ * The minimum an activity event must carry to be routable. Centralizing
+ * this here means callers can pass an `Activity` (full feed row) or a
+ * narrower shape (e.g. a future "activity event" peek payload) — both
+ * satisfy the kind + entity-id fields the helper inspects.
+ *
+ * - `claimId` / `remittanceId` come from the backend `ActivityEvent`
+ *   ORM columns (SP21 Task 2.5). `claimId` is set on `claim_*` events;
+ *   `remittanceId` is set on `remit_received`.
+ * - `npi` is the existing `Activity.npi` field. For `provider_added`
+ *   events the provider NPI IS the entity id (the URL target).
+ */
+export type RoutableEvent = Pick<
+  Activity,
+  "kind" | "claimId" | "remittanceId" | "npi"
+>;
+
+/**
+ * Maps an activity event to the URL the operator should land on when
+ * clicking the event. Used by:
+ *
+ * - Dashboard "Recent activity" card (this PR, Task 2.5).
+ * - `/activity` log page (Task 2.5 wired here; full integration is
+ *   a later task).
+ *
+ * Returns `null` for kinds that don't have a drill target yet, or
+ * when the entity id field is missing on the event. Callers are
+ * expected to surface a "coming soon" toast in that case so the click
+ * still gives feedback.
+ */
+export function eventKindToUrl(event: RoutableEvent): string | null {
+  switch (event.kind) {
+    case "claim_submitted":
+    case "claim_paid":
+    case "claim_denied":
+    case "claim_accepted": {
+      if (!event.claimId) return null;
+      return `/claims?claim=${encodeURIComponent(event.claimId)}`;
+    }
+    case "remit_received":
+      // Phase 4 — the `RemitDrawer` isn't built yet; the helper stays
+      // honest and returns null so the caller's "coming soon" toast
+      // fires. When the drawer lands, the route becomes
+      // `/remittances?remit=${encodeURIComponent(event.remittanceId ?? "")}`.
+      return null;
+    case "provider_added": {
+      if (!event.npi) return null;
+      return `/providers?provider=${encodeURIComponent(event.npi)}`;
+    }
+    default:
+      return null;
+  }
+}

src/pages/Dashboard.test.tsx

@@ -0,0 +1,151 @@
+// @vitest-environment happy-dom
+// SP21 Task 2.5: Dashboard "Recent activity" card routes clicks by event
+// kind. This test verifies the wiring end-to-end: a `claim_paid` event
+// in the activity slice becomes a clickable row that navigates to
+// `/claims?claim=<id>`, while a `remit_received` event surfaces a
+// "coming in a later phase" toast (since the RemitDrawer lands in
+// Phase 4).
+//
+// `Dashboard` reads `claims`, `providers`, `activity` from the
+// `useAppStore` slice, so we override the slice directly via
+// `useAppStore.setState` instead of mocking `useActivity` — the
+// sample-data mode is exactly what the dashboard sees when no API is
+// configured, so the test stays faithful to production behavior.
+(globalThis as { IS_REACT_ACT_ENVIRONMENT?: boolean }).IS_REACT_ACT_ENVIRONMENT = true;
+
+import { afterEach, describe, expect, it, vi } from "vitest";
+import { cleanup, fireEvent, render } from "@testing-library/react";
+import { MemoryRouter } from "react-router-dom";
+import { Dashboard } from "./Dashboard";
+import { useAppStore } from "@/store";
+import type { Activity } from "@/types";
+
+// sonner renders toasts through a portal; jsdom has no layout so the
+// `position` style is a no-op. We just verify that `toast.info` is
+// called with the expected message — sonner itself has its own tests.
+vi.mock("sonner", () => ({
+  toast: {
+    info: vi.fn(),
+    success: vi.fn(),
+    error: vi.fn(),
+  },
+}));
+
+// Capture navigation side effects so we can assert on the URL the
+// Dashboard would push. We use a `MemoryRouter` (initialEntries=["/"])
+// and observe the rendered route via a tiny listener component that
+// reads the current `<MemoryRouter>` entry — no real `window.history`
+// or `BrowserRouter` required.
+import { useLocation } from "react-router-dom";
+
+function LocationProbe() {
+  const loc = useLocation();
+  return (
+    <div
+      data-testid="location"
+      data-pathname={loc.pathname}
+      data-search={loc.search}
+    />
+  );
+}
+
+afterEach(() => {
+  cleanup();
+  vi.clearAllMocks();
+  // Reset the activity slice so tests don't bleed into each other.
+  useAppStore.setState({ activity: [] });
+});
+
+describe("Dashboard · Recent activity event routing (SP21 Task 2.5)", () => {
+  it("navigates to /claims?claim=ID when a claim_paid event is clicked", () => {
+    const activity: Activity[] = [
+      {
+        id: "ae-1",
+        kind: "claim_paid",
+        message: "Paid CLM-42 · Jordan Smith",
+        timestamp: "2026-06-20T12:00:00Z",
+        claimId: "CLM-42",
+        remittanceId: null,
+      },
+    ];
+    useAppStore.setState({ activity });
+
+    const { getByTestId, getByRole } = render(
+      <MemoryRouter initialEntries={["/"]}>
+        <Dashboard />
+        <LocationProbe />
+      </MemoryRouter>,
+    );
+
+    // The row becomes a button-like <li> with role="button" and a
+    // descriptive aria-label derived from the kind.
+    const row = getByRole("button", { name: /View claim paid/ });
+    fireEvent.click(row);
+
+    const probe = getByTestId("location");
+    expect(probe.getAttribute("data-pathname")).toBe("/claims");
+    expect(probe.getAttribute("data-search")).toBe("?claim=CLM-42");
+  });
+
+  it("navigates to /providers?provider=NPI when a provider_added event is clicked", () => {
+    const activity: Activity[] = [
+      {
+        id: "ae-2",
+        kind: "provider_added",
+        message: "Added Cedar Park Family Medicine",
+        timestamp: "2026-06-20T12:00:00Z",
+        npi: "1730187395",
+        claimId: null,
+        remittanceId: null,
+      },
+    ];
+    useAppStore.setState({ activity });
+
+    const { getByTestId, getByRole } = render(
+      <MemoryRouter initialEntries={["/"]}>
+        <Dashboard />
+        <LocationProbe />
+      </MemoryRouter>,
+    );
+
+    fireEvent.click(getByRole("button", { name: /View provider added/ }));
+
+    const probe = getByTestId("location");
+    expect(probe.getAttribute("data-pathname")).toBe("/providers");
+    expect(probe.getAttribute("data-search")).toBe("?provider=1730187395");
+  });
+
+  it("fires the toast (no navigation) for remit_received — Phase 4 drawer", async () => {
+    const { toast } = await import("sonner");
+    const activity: Activity[] = [
+      {
+        id: "ae-3",
+        kind: "remit_received",
+        message: "Remit REM-7 received",
+        timestamp: "2026-06-20T12:00:00Z",
+        claimId: null,
+        remittanceId: "REM-7",
+      },
+    ];
+    useAppStore.setState({ activity });
+
+    const { getByTestId, getByRole } = render(
+      <MemoryRouter initialEntries={["/"]}>
+        <Dashboard />
+        <LocationProbe />
+      </MemoryRouter>,
+    );
+
+    fireEvent.click(getByRole("button", { name: /View remit received/ }));
+
+    expect(toast.info).toHaveBeenCalledTimes(1);
+    const msg = (toast.info as ReturnType<typeof vi.fn>).mock.calls[0]?.[0] as string;
+    expect(msg).toMatch(/remit received/i);
+    expect(msg).toMatch(/coming in a later phase/i);
+
+    // URL must not have changed — the toast path is non-navigating.
+    const probe = getByTestId("location");
+    expect(probe.getAttribute("data-pathname")).toBe("/");
+    expect(probe.getAttribute("data-search")).toBe("");
+  });
+});

src/pages/Dashboard.tsx

@@ -16,7 +16,9 @@ import { ActivityFeed } from "@/components/ActivityFeed";
 import { AnimatedNumber } from "@/components/AnimatedNumber";
 import { DrillableCell } from "@/components/drill/DrillableCell";
 import { fmt } from "@/lib/format";
+import { eventKindToUrl } from "@/lib/event-routing";
 import { useAppStore } from "@/store";
+import { toast } from "sonner";
 
 const MONTHS_BACK = 6;
 
@@ -275,7 +277,24 @@ export function Dashboard() {
             </span>
           </CardHeader>
           <CardContent className="pt-0">
-            <ActivityFeed items={activity.slice(0, 10)} />
+            <ActivityFeed
+              items={activity.slice(0, 10)}
+              onItemClick={(evt) => {
+                // SP21 Task 2.5: route by event kind. claim_* kinds
+                // navigate to the matching claim drawer (URL-driven,
+                // drawer mounts in Phase 5); provider_added opens the
+                // ProviderDrawer. remit_received and any unmapped
+                // kind surface a "coming soon" toast so the click
+                // still gives feedback until the RemitDrawer lands in
+                // Phase 4.
+                const url = eventKindToUrl(evt);
+                if (url) navigate(url);
+                else
+                  toast.info(
+                    `Drill for ${evt.kind.replace(/_/g, " ")} coming in a later phase.`,
+                  );
+              }}
+            />
           </CardContent>
         </Card>
 

src/store/index.ts

@@ -49,6 +49,10 @@ export const useAppStore = create<AppState>((set) => ({
           timestamp: claim.submissionDate,
           npi: claim.providerNpi,
           amount: claim.billedAmount,
+          // SP21 Task 2.5: mirror the backend wire shape so the
+          // Dashboard routing helper finds the claim id.
+          claimId: claim.id,
+          remittanceId: null,
         },
         ...s.activity,
       ],

src/types/index.ts

@@ -155,6 +155,23 @@ export interface Activity {
   timestamp: string;
   npi?: string;
   amount?: number;
+  /**
+   * SP21 Task 2.5: read from the backend `ActivityEvent.claim_id` so
+   * the Dashboard "Recent activity" card can route a click on a
+   * `claim_*` event to the matching claim drawer (via
+   * `src/lib/event-routing.ts`). Populated only for events that
+   * correspond to a specific claim; `null` for orphan events such as
+   * `remit_received` or `provider_added`.
+   */
+  claimId?: string | null;
+  /**
+   * SP21 Task 2.5: read from the backend `ActivityEvent.remittance_id`.
+   * Populated only for events that reference a specific remittance
+   * (e.g. `remit_received`); `null` otherwise. The Dashboard toast
+   * covers the Phase 2 case where this routes to a not-yet-built
+   * `RemitDrawer` (Phase 4).
+   */
+  remittanceId?: string | null;
 }
 
 // ---------------------------------------------------------------------------