feat(17-02): create InitiativeList component

- Fetches initiatives via trpc.listInitiatives with optional status filter
- Handles loading, error, empty, and populated states
- Empty state shows "No initiatives yet" with CTA button
- Error state shows message with retry button
- Renders vertical stack of InitiativeCards with space-y-3 gap
- Fix: SerializedInitiative type for tRPC Date→string serialization

packages/web/src/components/InitiativeCard.tsx

@@ -1,5 +1,4 @@
 import { MoreHorizontal, Eye, Bot } from "lucide-react";
-import type { Initiative } from "@codewalk-district/shared";
 import { Card } from "@/components/ui/card";
 import { Button } from "@/components/ui/button";
 import {
@@ -13,8 +12,18 @@ import { StatusBadge } from "@/components/StatusBadge";
 import { ProgressBar } from "@/components/ProgressBar";
 import { trpc } from "@/lib/trpc";
 
+/** Initiative shape as returned by tRPC (Date serialized to string over JSON) */
+export interface SerializedInitiative {
+  id: string;
+  name: string;
+  description: string | null;
+  status: "active" | "completed" | "archived";
+  createdAt: string;
+  updatedAt: string;
+}
+
 interface InitiativeCardProps {
-  initiative: Initiative;
+  initiative: SerializedInitiative;
   onView: () => void;
   onSpawnArchitect: (mode: "discuss" | "breakdown") => void;
   onDelete: () => void;

packages/web/src/components/InitiativeList.tsx

@@ -0,0 +1,90 @@
+import { AlertCircle, Plus } from "lucide-react";
+import { Button } from "@/components/ui/button";
+import { InitiativeCard } from "@/components/InitiativeCard";
+import { trpc } from "@/lib/trpc";
+
+interface InitiativeListProps {
+  statusFilter?: "all" | "active" | "completed" | "archived";
+  onCreateNew: () => void;
+  onViewInitiative: (id: string) => void;
+  onSpawnArchitect: (
+    initiativeId: string,
+    mode: "discuss" | "breakdown",
+  ) => void;
+  onDeleteInitiative: (id: string) => void;
+}
+
+export function InitiativeList({
+  statusFilter = "all",
+  onCreateNew,
+  onViewInitiative,
+  onSpawnArchitect,
+  onDeleteInitiative,
+}: InitiativeListProps) {
+  const initiativesQuery = trpc.listInitiatives.useQuery(
+    statusFilter === "all" ? undefined : { status: statusFilter },
+  );
+
+  // Loading state
+  if (initiativesQuery.isLoading) {
+    return (
+      <div className="flex items-center justify-center py-12 text-muted-foreground">
+        Loading initiatives...
+      </div>
+    );
+  }
+
+  // Error state
+  if (initiativesQuery.isError) {
+    return (
+      <div className="flex flex-col items-center justify-center gap-4 py-12">
+        <AlertCircle className="h-8 w-8 text-destructive" />
+        <p className="text-sm text-destructive">
+          Failed to load initiatives: {initiativesQuery.error.message}
+        </p>
+        <Button
+          variant="outline"
+          size="sm"
+          onClick={() => initiativesQuery.refetch()}
+        >
+          Retry
+        </Button>
+      </div>
+    );
+  }
+
+  const initiatives = initiativesQuery.data ?? [];
+
+  // Empty state
+  if (initiatives.length === 0) {
+    return (
+      <div className="flex flex-col items-center justify-center gap-4 py-16">
+        <p className="text-lg font-medium text-muted-foreground">
+          No initiatives yet
+        </p>
+        <p className="text-sm text-muted-foreground">
+          Create your first initiative to start planning and executing work.
+        </p>
+        <Button onClick={onCreateNew}>
+          <Plus className="mr-1 h-4 w-4" />
+          New Initiative
+        </Button>
+      </div>
+    );
+  }
+
+  // Populated state
+  return (
+    <div className="space-y-3">
+      {initiatives.map((initiative) => (
+        <InitiativeCard
+          key={initiative.id}
+          initiative={initiative}
+          onView={() => onViewInitiative(initiative.id)}
+          onSpawnArchitect={(mode) => onSpawnArchitect(initiative.id, mode)}
+          onDelete={() => onDeleteInitiative(initiative.id)}
+        />
+      ))}
+    </div>
+  );
+}