feat(server): implement KV store API and fingerprinting functionality

- Added a new KV store API with endpoints for querying namespaces and key-value pairs.
- Introduced fingerprinting functionality to hash and manage data fingerprints, allowing for efficient change detection.
- Enhanced existing scripts to utilize the new fingerprinting capabilities, enabling conditional execution based on data changes.
- Updated the web interface to include a dedicated KV page for managing key-value entries and displaying their details.
- Improved overall user experience with pagination and search capabilities in the KV management interface.

packages/server/src/api/kv.js

@@ -0,0 +1,22 @@
+import { kvNamespaces, kvQuery } from "../../kv-store.js";
+
+/**
+ * @param {import("fastify").FastifyInstance} fastify
+ */
+export default async function kvPlugin(fastify) {
+  fastify.get("/kv/namespaces", async () => {
+    return { namespaces: await kvNamespaces() };
+  });
+
+  fastify.get("/kv", async (req) => {
+    const q = /** @type {Record<string, string | undefined>} */ (req.query ?? {});
+    const limit = q.limit != null ? Number(q.limit) : undefined;
+    const offset = q.offset != null ? Number(q.offset) : undefined;
+    return kvQuery({
+      namespace: q.namespace || undefined,
+      q: q.q || undefined,
+      limit: Number.isFinite(limit) ? limit : undefined,
+      offset: Number.isFinite(offset) ? offset : undefined,
+    });
+  });
+}