feat: expose workflow console api and RPC service with @effect/rpc

- Replace manual JSON-RPC protocol handling with @effect/rpc typed RPCs
- Add evidence capture layer (per-call Ref, response body buffering/reconstruction)
- Add service module with typed dispatch and layer composition via Layer.mergeAll
- Add Hono API with /api/health, /api/connect, /api/rpc routes
- Add browser DTO contracts, error mapping, body size limits
- Add 13 Hono route tests and 12 target-policy tests passing
- Delete old protocol.ts and protocol.test.ts (replaced by rpcs.ts/service.ts)

web/apps/server/src/index.ts

@@ -0,0 +1,39 @@
+import { Effect, Layer } from "effect";
+import { serve } from "@hono/node-server";
+import {
+  WorkflowRpc,
+  makeWorkflowRpcLayer,
+  type OperationExchange,
+  type OperationName,
+} from "@lda/workflow-rpc";
+import { createApp, type RunOperation } from "./app.js";
+
+const port = Number(process.env.WEB_PORT ?? "8787");
+if (Number.isNaN(port) || port < 1 || port > 65535) {
+  console.error(`Invalid WEB_PORT: ${process.env.WEB_PORT}`);
+  process.exit(1);
+}
+
+const hostname = process.env.WEB_HOST ?? "127.0.0.1";
+
+const liveLayer = makeWorkflowRpcLayer;
+
+const runOperation: RunOperation = async (
+  operation: OperationName,
+  target: string,
+  params: unknown,
+): Promise<OperationExchange> =>
+  Effect.gen(function* () {
+    const { execute } = yield* WorkflowRpc;
+    return yield* execute(operation, target, params);
+  }).pipe(Effect.provide(liveLayer), Effect.runPromise);
+
+const app = createApp({ runOperation });
+
+serve({
+  fetch: app.fetch,
+  hostname,
+  port,
+});
+
+console.log(`workflow console server listening on http://${hostname}:${port}`);