diff --git a/package.json b/package.json
index 8871b81..f02eee9 100644
--- a/package.json
+++ b/package.json
@@ -6,6 +6,7 @@
   ],
   "scripts": {
     "build": "bunx tsc --build",
+    "build:bundles": "bash scripts/build-bundles.sh",
     "check": "bunx tsc --build && biome check .",
     "typecheck": "bunx tsc --build",
     "format": "biome format --write .",
diff --git a/packages/workflow-cas/.gitignore b/packages/workflow-cas/.gitignore
new file mode 100644
index 0000000..29649dd
--- /dev/null
+++ b/packages/workflow-cas/.gitignore
@@ -0,0 +1 @@
+workflow-cas
diff --git a/packages/workflow-execute/.gitignore b/packages/workflow-execute/.gitignore
new file mode 100644
index 0000000..2cf78d8
--- /dev/null
+++ b/packages/workflow-execute/.gitignore
@@ -0,0 +1 @@
+workflow-execute
diff --git a/packages/workflow-protocol/.gitignore b/packages/workflow-protocol/.gitignore
new file mode 100644
index 0000000..b328d5b
--- /dev/null
+++ b/packages/workflow-protocol/.gitignore
@@ -0,0 +1 @@
+workflow-protocol
diff --git a/packages/workflow-register/.gitignore b/packages/workflow-register/.gitignore
new file mode 100644
index 0000000..828d319
--- /dev/null
+++ b/packages/workflow-register/.gitignore
@@ -0,0 +1 @@
+workflow-register
diff --git a/packages/workflow-register/src/bundle/ensure-uncaged-workflow-symlink.ts b/packages/workflow-register/src/bundle/ensure-uncaged-workflow-symlink.ts
index cecc319..9aa4cc3 100644
--- a/packages/workflow-register/src/bundle/ensure-uncaged-workflow-symlink.ts
+++ b/packages/workflow-register/src/bundle/ensure-uncaged-workflow-symlink.ts
@@ -48,6 +48,9 @@ export async function ensureUncagedWorkflowSymlink(storageRoot: string): Promise
     { name: "workflow-runtime", dir: siblingPackageDir("workflow-runtime") },
     { name: "workflow-cas", dir: siblingPackageDir("workflow-cas") },
     { name: "workflow-protocol", dir: siblingPackageDir("workflow-protocol") },
+    { name: "workflow-util", dir: siblingPackageDir("workflow-util") },
+    { name: "workflow-execute", dir: siblingPackageDir("workflow-execute") },
+    { name: "workflow-register", dir: siblingPackageDir("workflow-register") },
   ];
 
   for (const pkg of packages) {
diff --git a/packages/workflow-runtime/.gitignore b/packages/workflow-runtime/.gitignore
new file mode 100644
index 0000000..cf62672
--- /dev/null
+++ b/packages/workflow-runtime/.gitignore
@@ -0,0 +1 @@
+workflow-runtime
diff --git a/packages/workflow-template-develop/bundle-entry.ts b/packages/workflow-template-develop/bundle-entry.ts
index 78358c9..7ec826b 100644
--- a/packages/workflow-template-develop/bundle-entry.ts
+++ b/packages/workflow-template-develop/bundle-entry.ts
@@ -2,19 +2,17 @@
  * develop bundle entry — 小橘 🍊
  *
  * All roles use cursor-agent with workspace auto-extracted from context.
+ *
+ * ENV VARS: WORKFLOW_LLM_API_KEY (required), WORKFLOW_LLM_BASE_URL,
+ * WORKFLOW_LLM_MODEL, WORKFLOW_CURSOR_MODEL, WORKFLOW_CURSOR_TIMEOUT.
+ * Must be set before the first worker spawn — workers are persistent and
+ * do not pick up env changes after initial import.
  */
 import { createCursorAgent } from "@uncaged/workflow-agent-cursor";
+import type { AgentContext, AgentFn, AgentFnResult } from "@uncaged/workflow-runtime";
 import { createWorkflow } from "@uncaged/workflow-runtime";
 import { buildDevelopDescriptor, developWorkflowDefinition } from "./src/index.js";
 
-function requireEnv(name: string): string {
-  const value = process.env[name];
-  if (value === undefined || value === "") {
-    throw new Error(`missing required env var: ${name}`);
-  }
-  return value;
-}
-
 function optionalEnv(name: string): string | null {
   const value = process.env[name];
   if (value === undefined || value === "") {
@@ -23,23 +21,39 @@ function optionalEnv(name: string): string | null {
   return value;
 }
 
-const llmProvider = {
-  baseUrl:
-    optionalEnv("WORKFLOW_LLM_BASE_URL") ?? "https://dashscope.aliyuncs.com/compatible-mode/v1",
-  apiKey: requireEnv("WORKFLOW_LLM_API_KEY"),
-  model: optionalEnv("WORKFLOW_LLM_MODEL") ?? "qwen-plus",
-};
+function requireEnv(name: string): string {
+  const value = process.env[name];
+  if (value === undefined || value === "") {
+    throw new Error(`missing required env var: ${name}`);
+  }
+  return value;
+}
 
-const agent = createCursorAgent({
-  model: optionalEnv("WORKFLOW_CURSOR_MODEL"),
-  timeout: optionalEnv("WORKFLOW_CURSOR_TIMEOUT")
-    ? Number(optionalEnv("WORKFLOW_CURSOR_TIMEOUT"))
-    : 0,
-  workspace: null,
-  llmProvider,
-});
+function createLazyAgent(): AgentFn {
+  let cached: AgentFn | null = null;
+  return (ctx: AgentContext): Promise<AgentFnResult> => {
+    if (cached === null) {
+      const llmProvider = {
+        baseUrl:
+          optionalEnv("WORKFLOW_LLM_BASE_URL") ??
+          "https://dashscope.aliyuncs.com/compatible-mode/v1",
+        apiKey: requireEnv("WORKFLOW_LLM_API_KEY"),
+        model: optionalEnv("WORKFLOW_LLM_MODEL") ?? "qwen-plus",
+      };
+      cached = createCursorAgent({
+        model: optionalEnv("WORKFLOW_CURSOR_MODEL"),
+        timeout: optionalEnv("WORKFLOW_CURSOR_TIMEOUT")
+          ? Number(optionalEnv("WORKFLOW_CURSOR_TIMEOUT"))
+          : 0,
+        workspace: null,
+        llmProvider,
+      });
+    }
+    return cached(ctx);
+  };
+}
 
-const wf = createWorkflow(developWorkflowDefinition, { agent, overrides: null });
+const wf = createWorkflow(developWorkflowDefinition, { agent: createLazyAgent(), overrides: null });
 
 export const descriptor = buildDevelopDescriptor();
 export const run = wf;
diff --git a/packages/workflow-template-develop/package.json b/packages/workflow-template-develop/package.json
index 3ab1f2f..7d2ad3e 100644
--- a/packages/workflow-template-develop/package.json
+++ b/packages/workflow-template-develop/package.json
@@ -12,6 +12,7 @@
     "test": "bun test"
   },
   "dependencies": {
+    "@uncaged/workflow-agent-cursor": "workspace:*",
     "@uncaged/workflow-register": "workspace:*",
     "@uncaged/workflow-runtime": "workspace:*",
     "zod": "^4.0.0"
diff --git a/packages/workflow-template-solve-issue/bundle-entry.ts b/packages/workflow-template-solve-issue/bundle-entry.ts
index 09b3dd9..12985a7 100644
--- a/packages/workflow-template-solve-issue/bundle-entry.ts
+++ b/packages/workflow-template-solve-issue/bundle-entry.ts
@@ -3,6 +3,10 @@
  *
  * preparer + submitter → hermes agent
  * developer → workflow-as-agent (delegates to "develop" workflow)
+ *
+ * ENV VARS: WORKFLOW_HERMES_MODEL, WORKFLOW_HERMES_TIMEOUT.
+ * Must be set before the first worker spawn — workers are persistent and
+ * do not pick up env changes after initial import.
  */
 import { createHermesAgent } from "@uncaged/workflow-agent-hermes";
 import { workflowAsAgent } from "@uncaged/workflow-execute";
diff --git a/packages/workflow-template-solve-issue/package.json b/packages/workflow-template-solve-issue/package.json
index 04a372c..44b1a00 100644
--- a/packages/workflow-template-solve-issue/package.json
+++ b/packages/workflow-template-solve-issue/package.json
@@ -12,13 +12,14 @@
     "test": "bun test"
   },
   "dependencies": {
+    "@uncaged/workflow-agent-hermes": "workspace:*",
+    "@uncaged/workflow-execute": "workspace:*",
     "@uncaged/workflow-register": "workspace:*",
     "@uncaged/workflow-runtime": "workspace:*",
     "zod": "^4.0.0"
   },
   "devDependencies": {
     "@uncaged/workflow-cas": "workspace:*",
-    "@uncaged/workflow-execute": "workspace:*",
     "@uncaged/workflow-protocol": "workspace:*"
   }
 }
diff --git a/packages/workflow-util/.gitignore b/packages/workflow-util/.gitignore
new file mode 100644
index 0000000..581574d
--- /dev/null
+++ b/packages/workflow-util/.gitignore
@@ -0,0 +1 @@
+workflow-util
diff --git a/scripts/build-bundles.sh b/scripts/build-bundles.sh
new file mode 100755
index 0000000..4e98d2d
--- /dev/null
+++ b/scripts/build-bundles.sh
@@ -0,0 +1,43 @@
+#!/usr/bin/env bash
+set -euo pipefail
+
+# Packages externalized from bundles — resolved at runtime via symlinks
+# created by ensureUncagedWorkflowSymlink in workflow-register.
+EXTERNAL=(
+  --external @uncaged/workflow-runtime
+  --external @uncaged/workflow-protocol
+  --external @uncaged/workflow-cas
+  --external @uncaged/workflow-util
+  --external @uncaged/workflow-execute
+  --external @uncaged/workflow-register
+)
+
+REPO_ROOT="$(cd "$(dirname "$0")/.." && pwd)"
+cd "$REPO_ROOT"
+
+mkdir -p dist
+
+echo "Building develop bundle..."
+bun build packages/workflow-template-develop/bundle-entry.ts \
+  --bundle --format esm --target bun \
+  "${EXTERNAL[@]}" \
+  --outfile dist/develop.esm.js
+
+echo "Building solve-issue bundle..."
+bun build packages/workflow-template-solve-issue/bundle-entry.ts \
+  --bundle --format esm --target bun \
+  "${EXTERNAL[@]}" \
+  --outfile dist/solve-issue.esm.js
+
+echo "Done. Bundles written to dist/"
+
+# Register bundles if --register flag is passed
+if [[ "${1:-}" == "--register" ]]; then
+  STORAGE_ROOT="${UNCAGED_WORKFLOW_STORAGE_ROOT:-${WORKFLOW_STORAGE_ROOT:-$HOME/.uncaged/workflow}}"
+  echo "Registering bundles..."
+  for bundle in develop solve-issue; do
+    cp "dist/${bundle}.esm.js" "$STORAGE_ROOT/${bundle}.esm.js"
+    uncaged-workflow workflow add "$bundle" "$STORAGE_ROOT/${bundle}.esm.js"
+  done
+  echo "Bundles registered."
+fi