diff --git a/deploy/deploy.yaml b/deploy/deploy.yaml
index 0a656ae6..bac286b9 100644
--- a/deploy/deploy.yaml
+++ b/deploy/deploy.yaml
@@ -585,6 +585,8 @@ lanes:
           HWLAB_CLOUD_WEB_OPENCODE_UPSTREAM_URL: http://opencode-server.hwlab-v03.svc.cluster.local:4096
           HWLAB_CLOUD_WEB_OPENCODE_USERNAME: secretRef:hwlab-opencode-server-auth/username
           HWLAB_CLOUD_WEB_OPENCODE_PASSWORD: secretRef:hwlab-opencode-server-auth/password
+          HWLAB_CLOUD_WEB_OPENCODE_EVENT_DIRECTORY_FROM: /workspace
+          HWLAB_CLOUD_WEB_OPENCODE_EVENT_DIRECTORY_TO: /
           OTEL_EXPORTER_OTLP_TRACES_ENDPOINT: http://otel-collector.platform-infra.svc.cluster.local:4318/v1/traces
           OTEL_SERVICE_NAME: hwlab-cloud-web
         observable: true
diff --git a/internal/dev-entrypoint/cloud-web-proxy.mjs b/internal/dev-entrypoint/cloud-web-proxy.mjs
index d3cdadf4..8ccfb6e5 100644
--- a/internal/dev-entrypoint/cloud-web-proxy.mjs
+++ b/internal/dev-entrypoint/cloud-web-proxy.mjs
@@ -67,12 +67,14 @@ export function proxyCloudApiRequest({
   body = "",
   timeoutMs,
   forceStream = false,
-  extraResponseHeaders = {}
+  extraResponseHeaders = {},
+  streamTransform = null
 }) {
   return new Promise((resolve, reject) => {
     let timedOut = false;
     let settled = false;
     let timeout = null;
+    let streamTransformEnded = false;
 
     const settle = (callback, value) => {
       if (settled) return;
@@ -102,11 +104,15 @@ export function proxyCloudApiRequest({
           response.flushHeaders?.();
           upstreamResponse.on("data", (chunk) => {
             armTimeout();
-            response.write(chunk);
+            writeStreamOutput(response, streamTransform?.write ? streamTransform.write(chunk) : chunk);
           });
           upstreamResponse.on("end", () => {
+            if (!streamTransformEnded && streamTransform?.end) {
+              streamTransformEnded = true;
+              writeStreamOutput(response, streamTransform.end());
+            }
             response.end();
-            settle(resolve, { statusCode: upstreamStatusCode, streaming: true });
+            settle(resolve, { statusCode: upstreamStatusCode, streaming: true, streamTransformStats: streamTransform?.stats });
           });
           upstreamResponse.on("error", (error) => {
             if (response.headersSent) {
@@ -117,8 +123,12 @@ export function proxyCloudApiRequest({
             settle(reject, error);
           });
           upstreamResponse.on("close", () => {
+            if (!streamTransformEnded && streamTransform?.end) {
+              streamTransformEnded = true;
+              writeStreamOutput(response, streamTransform.end());
+            }
             if (!response.writableEnded) response.end();
-            settle(resolve, { statusCode: upstreamStatusCode, streaming: true });
+            settle(resolve, { statusCode: upstreamStatusCode, streaming: true, streamTransformStats: streamTransform?.stats });
           });
           response.on("close", () => upstream.destroy());
           return;
@@ -157,6 +167,15 @@ export function proxyCloudApiRequest({
   });
 }
 
+function writeStreamOutput(response, output) {
+  if (output === undefined || output === null || output === "") return;
+  if (Array.isArray(output)) {
+    for (const item of output) writeStreamOutput(response, item);
+    return;
+  }
+  response.write(output);
+}
+
 function mergeResponseHeaders(baseHeaders = {}, extraHeaders = {}) {
   const result = { ...baseHeaders };
   for (const [key, value] of Object.entries(extraHeaders)) {
diff --git a/internal/dev-entrypoint/cloud-web-runtime.mjs b/internal/dev-entrypoint/cloud-web-runtime.mjs
index 01f7f6c4..85acc0d9 100644
--- a/internal/dev-entrypoint/cloud-web-runtime.mjs
+++ b/internal/dev-entrypoint/cloud-web-runtime.mjs
@@ -63,7 +63,8 @@ export function createCloudWebServer({
     max: 2400000
   }),
   opencodeUsername = optionalRuntimeConfigEnv("HWLAB_CLOUD_WEB_OPENCODE_USERNAME") || "",
-  opencodePassword = optionalRuntimeConfigEnv("HWLAB_CLOUD_WEB_OPENCODE_PASSWORD") || ""
+  opencodePassword = optionalRuntimeConfigEnv("HWLAB_CLOUD_WEB_OPENCODE_PASSWORD") || "",
+  opencodeEventDirectoryRewrite = opencodeEventDirectoryRewriteFromEnv()
 }) {
   return createServer(async (request, response) => {
     attachRequestErrorHandlers({ request, response, serviceId });
@@ -78,7 +79,7 @@ export function createCloudWebServer({
         return;
       }
       if (isOpencodeProxyRequest(request, url, opencodeProxyHost)) {
-        await proxyOpencodeRequest({ request, response, url, cloudApiBaseUrl, cloudApiProxyTimeoutMs, opencodeUpstreamUrl, opencodeProxyTimeoutMs, opencodeUsername, opencodePassword, serviceId, sendJson });
+        await proxyOpencodeRequest({ request, response, url, cloudApiBaseUrl, cloudApiProxyTimeoutMs, opencodeUpstreamUrl, opencodeProxyTimeoutMs, opencodeUsername, opencodePassword, opencodeEventDirectoryRewrite, serviceId, sendJson });
         return;
       }
       if (await handleCloudWebAuth({ request, response, url, cloudApiBaseUrl, cloudApiProxyTimeoutMs, serviceId, sendJson })) {
@@ -304,6 +305,71 @@ function opencodeProxyHostFromEnv() {
   }
 }
 
+function opencodeEventDirectoryRewriteFromEnv() {
+  const from = optionalRuntimeConfigEnv("HWLAB_CLOUD_WEB_OPENCODE_EVENT_DIRECTORY_FROM");
+  const to = optionalRuntimeConfigEnv("HWLAB_CLOUD_WEB_OPENCODE_EVENT_DIRECTORY_TO");
+  if (!from || !to || from === to) return null;
+  return { from, to };
+}
+
+function opencodeEventDirectoryTransformForTarget(target, rewrite) {
+  if (!rewrite || target?.pathname !== "/global/event") return null;
+  return opencodeEventDirectoryRewriteTransform(rewrite);
+}
+
+function opencodeEventDirectoryRewriteTransform(rewrite) {
+  const stats = {
+    enabled: true,
+    from: rewrite.from,
+    to: rewrite.to,
+    dataLines: 0,
+    rewrittenEvents: 0,
+    jsonErrors: 0
+  };
+  let pending = "";
+  return {
+    stats,
+    write(chunk) {
+      pending += Buffer.isBuffer(chunk) ? chunk.toString("utf8") : String(chunk ?? "");
+      const output = [];
+      let newlineIndex = pending.indexOf("\n");
+      while (newlineIndex >= 0) {
+        const line = pending.slice(0, newlineIndex + 1);
+        pending = pending.slice(newlineIndex + 1);
+        output.push(rewriteOpencodeEventDirectoryLine(line, rewrite, stats));
+        newlineIndex = pending.indexOf("\n");
+      }
+      return output;
+    },
+    end() {
+      if (!pending) return "";
+      const line = pending;
+      pending = "";
+      return rewriteOpencodeEventDirectoryLine(line, rewrite, stats);
+    }
+  };
+}
+
+function rewriteOpencodeEventDirectoryLine(line, rewrite, stats) {
+  const match = String(line).match(/^(data:\s*)(.*?)(\r?\n)?$/u);
+  if (!match) return line;
+  const [, prefix, payload, lineEnding = ""] = match;
+  const text = payload.trim();
+  if (!text) return line;
+  stats.dataLines += 1;
+  try {
+    const parsed = JSON.parse(text);
+    if (parsed && typeof parsed === "object" && parsed.directory === rewrite.from) {
+      parsed.directory = rewrite.to;
+      stats.rewrittenEvents += 1;
+      return `${prefix}${JSON.stringify(parsed)}${lineEnding}`;
+    }
+  } catch {
+    stats.jsonErrors += 1;
+  }
+  return line;
+}
+
 function validateDisplayTimeZone(timeZone) {
   try {
     new Intl.DateTimeFormat("en-US", { timeZone }).format(new Date(0));
@@ -663,7 +729,7 @@ export async function proxyCloudApi({ request, response, url, cloudApiBaseUrl, c
   }
 }
 
-async function proxyOpencodeRequest({ request, response, url, cloudApiBaseUrl, cloudApiProxyTimeoutMs, opencodeUpstreamUrl, opencodeProxyTimeoutMs, opencodeUsername, opencodePassword, serviceId, sendJson }) {
+async function proxyOpencodeRequest({ request, response, url, cloudApiBaseUrl, cloudApiProxyTimeoutMs, opencodeUpstreamUrl, opencodeProxyTimeoutMs, opencodeUsername, opencodePassword, opencodeEventDirectoryRewrite = null, serviceId, sendJson }) {
   const traceContext = cloudWebTraceContext(request);
   const startedAtMs = Date.now();
   if (!cloudApiBaseUrl) {
@@ -733,6 +799,7 @@ async function proxyOpencodeRequest({ request, response, url, cloudApiBaseUrl, c
   }
 
   const target = opencodeTargetUrl(url, opencodeUpstreamUrl);
+  const streamTransform = opencodeEventDirectoryTransformForTarget(target, opencodeEventDirectoryRewrite);
   const extraResponseHeaders = {
     ...cloudWebTraceHeaders(traceContext, serviceId),
     ...(ticketAuth.ticket ? { "set-cookie": opencodeTicketSetCookie(ticketAuth.ticket) } : {})
@@ -748,7 +815,8 @@ async function proxyOpencodeRequest({ request, response, url, cloudApiBaseUrl, c
       response,
       body: request.method === "GET" || request.method === "HEAD" ? "" : body,
       timeoutMs: opencodeProxyTimeoutMs,
-      extraResponseHeaders
+      extraResponseHeaders,
+      streamTransform
     });
     emitOpencodeProxySpanAsync({
       traceContext,
@@ -761,7 +829,8 @@ async function proxyOpencodeRequest({ request, response, url, cloudApiBaseUrl, c
       errorCode: proxyResult?.errorCode || "",
       ticketAuth,
       sessionStatusCode: session.statusCode || 0,
-      streaming: proxyResult?.streaming === true
+      streaming: proxyResult?.streaming === true,
+      streamTransformStats: proxyResult?.streamTransformStats
     });
   } catch (error) {
     if (response.headersSent || response.writableEnded) {
@@ -916,7 +985,7 @@ function opencodeTraceDiagnostic(traceContext, extra = {}) {
   };
 }
 
-function emitOpencodeProxySpanAsync({ traceContext, serviceId, request, url, target = null, startedAtMs, statusCode = 0, errorCode = "", ticketAuth = null, sessionStatusCode = 0, streaming = false } = {}) {
+function emitOpencodeProxySpanAsync({ traceContext, serviceId, request, url, target = null, startedAtMs, statusCode = 0, errorCode = "", ticketAuth = null, sessionStatusCode = 0, streaming = false, streamTransformStats = null } = {}) {
   const endpoint = otelTracesEndpoint(process.env);
   if (!endpoint || !traceContext?.traceId || !traceContext?.spanId) return;
   const endedAtMs = Date.now();
@@ -944,6 +1013,7 @@ function emitOpencodeProxySpanAsync({ traceContext, serviceId, request, url, tar
       "opencode.proxy.ticket_accepted": Boolean(ticketAuth?.ticket),
       "opencode.proxy.session_status_code": sessionStatusCode || undefined,
       "opencode.proxy.streaming": streaming === true,
+      ...opencodeStreamTransformStatsAttributes(streamTransformStats),
       valuesPrinted: false
     }
   };
@@ -961,6 +1031,18 @@ function emitOpencodeProxySpanAsync({ traceContext, serviceId, request, url, tar
   }, 0);
 }
 
+function opencodeStreamTransformStatsAttributes(stats) {
+  if (!stats?.enabled) return {};
+  return {
+    "opencode.proxy.sse.directory_rewrite_enabled": true,
+    "opencode.proxy.sse.directory_rewrite_from": stats.from,
+    "opencode.proxy.sse.directory_rewrite_to": stats.to,
+    "opencode.proxy.sse.directory_rewrite_data_lines": stats.dataLines,
+    "opencode.proxy.sse.directory_rewrite_events": stats.rewrittenEvents,
+    "opencode.proxy.sse.directory_rewrite_json_errors": stats.jsonErrors
+  };
+}
+
 function opencodeProxyRoute(pathname) {
   const path = String(pathname || "/");
   if (path === "/global/event") return "/global/event";
diff --git a/internal/dev-entrypoint/cloud-web-runtime.test.mjs b/internal/dev-entrypoint/cloud-web-runtime.test.mjs
index 4b50f194..ff4a24b2 100644
--- a/internal/dev-entrypoint/cloud-web-runtime.test.mjs
+++ b/internal/dev-entrypoint/cloud-web-runtime.test.mjs
@@ -705,6 +705,58 @@ test("cloud web OpenCode proxy injects upstream Basic Auth without forwarding HW
   }
 });
 
+test("cloud web OpenCode proxy rewrites configured event stream directory", async () => {
+  const cloudApi = createServer((request, response) => {
+    request.resume();
+    response.writeHead(200, { "content-type": "application/json" });
+    response.end(JSON.stringify({ authenticated: request.headers.cookie === "hwlab_session=session-a" }));
+  });
+  const opencode = createServer((request, response) => {
+    request.resume();
+    response.writeHead(200, { "content-type": "text/event-stream; charset=utf-8" });
+    response.write('data: {"directory":"/workspace","payload":{"type":"session.status","properties":{"sessionID":"ses_1","status":{"type":"idle"}}}}\n\n');
+    response.write('data: {"directory":"/other","payload":{"type":"server.heartbeat","properties":{}}}\n\n');
+    response.end();
+  });
+  await listen(cloudApi);
+  await listen(opencode);
+
+  const cloudWeb = createCloudWebServer({
+    serviceId: "hwlab-cloud-web",
+    roots: [],
+    cloudApiBaseUrl: serverUrl(cloudApi),
+    cloudApiProxyTimeoutMs: 1000,
+    opencodeUpstreamUrl: serverUrl(opencode),
+    opencodeProxyHost: "127.0.0.1",
+    opencodeProxyTimeoutMs: 1000,
+    opencodeUsername: "oc_user",
+    opencodePassword: "oc_password",
+    opencodeEventDirectoryRewrite: { from: "/workspace", to: "/" },
+    healthPayload: () => ({ status: "ok" }),
+    sendJson(response, statusCode, body) {
+      const payload = JSON.stringify(body);
+      response.writeHead(statusCode, { "content-type": "application/json", "content-length": Buffer.byteLength(payload) });
+      response.end(payload);
+    }
+  });
+  await listen(cloudWeb);
+
+  try {
+    const response = await fetch(`${serverUrl(cloudWeb)}/global/event`, {
+      headers: { accept: "text/event-stream", cookie: "hwlab_session=session-a" }
+    });
+    assert.equal(response.status, 200);
+    const text = await response.text();
+    assert.match(text, /"directory":"\/"/u);
+    assert.doesNotMatch(text, /"directory":"\/workspace"/u);
+    assert.match(text, /"directory":"\/other"/u);
+  } finally {
+    await close(cloudWeb);
+    await close(opencode);
+    await close(cloudApi);
+  }
+});
+
 test("cloud web OpenCode proxy emits bounded OTLP span", async () => {
   const otelBodies = [];
   const otel = createServer(async (request, response) => {