diff --git a/agent-ops/skills/common/prepare-milestone-workspace/scripts/prepare_workspace.py b/agent-ops/skills/common/prepare-milestone-workspace/scripts/prepare_workspace.py
index 6736e679..753b968e 100755
--- a/agent-ops/skills/common/prepare-milestone-workspace/scripts/prepare_workspace.py
+++ b/agent-ops/skills/common/prepare-milestone-workspace/scripts/prepare_workspace.py
@@ -426,11 +426,50 @@ def epic_cycle_script(workspace: Path) -> Path:
 
 
 def dispatcher_script(workspace: Path) -> Path:
-    root = workspace / "agent-ops" / "skills" / "common" / "orchestrate-agent-task-loop"
-    path = root / "scripts" / "dispatch.py"
-    if not path.is_file():
-        raise PreparationError(f"dispatcher script not found: {path}")
-    return path
+    skills_root = workspace / "agent-ops" / "skills"
+    project_root = skills_root / "project" / "orchestrate-agent-task-loop"
+    project_dispatcher = project_root / "scripts" / "dispatch.py"
+    if project_dispatcher.is_file():
+        private_root = skills_root / "private" / "orchestrate-agent-task-loop"
+        private_dispatcher = private_root / "scripts" / "dispatch.py"
+        if (private_root / "SKILL.md").is_file() and private_dispatcher.is_file():
+            return private_dispatcher
+        return project_dispatcher
+    common_dispatcher = (
+        skills_root / "common" / "orchestrate-agent-task-loop" / "scripts" / "dispatch.py"
+    )
+    if not common_dispatcher.is_file():
+        raise PreparationError(f"dispatcher script not found: {common_dispatcher}")
+    return common_dispatcher
+
+
+def dispatcher_command(
+    *,
+    workspace: Path,
+    dispatcher: Path,
+    task_group: str,
+    execution_catalog: str,
+) -> list[str]:
+    command = [
+        sys.executable,
+        str(dispatcher),
+        "--workspace",
+        str(workspace),
+        "--task-group",
+        task_group,
+    ]
+    common_dispatcher = (
+        workspace
+        / "agent-ops"
+        / "skills"
+        / "common"
+        / "orchestrate-agent-task-loop"
+        / "scripts"
+        / "dispatch.py"
+    )
+    if dispatcher.resolve() == common_dispatcher.resolve():
+        command.extend(["--execution-catalog", execution_catalog])
+    return command
 
 
 def epic_cycle_command(
@@ -883,18 +922,15 @@ def coordinate_batch(
     dispatcher = dispatcher_script(workspace)
     task_group = f"m-{milestone_slug}"
     if not state.get("dispatcher_dry_run_done"):
+        dry_run_command = dispatcher_command(
+            workspace=workspace,
+            dispatcher=dispatcher,
+            task_group=task_group,
+            execution_catalog=args.execution_catalog,
+        )
+        dry_run_command.append("--dry-run")
         dry_run = run(
-            [
-                sys.executable,
-                str(dispatcher),
-                "--workspace",
-                str(workspace),
-                "--task-group",
-                task_group,
-                "--execution-catalog",
-                args.execution_catalog,
-                "--dry-run",
-            ],
+            dry_run_command,
             cwd=workspace,
             check=False,
             capture=False,
@@ -907,16 +943,12 @@ def coordinate_batch(
         atomic_json(state_path, state)
         emit("DISPATCHER_DRY_RUN_FINISHED", task_group=task_group)
 
-    command = [
-        sys.executable,
-        str(dispatcher),
-        "--workspace",
-        str(workspace),
-        "--task-group",
-        task_group,
-        "--execution-catalog",
-        args.execution_catalog,
-    ]
+    command = dispatcher_command(
+        workspace=workspace,
+        dispatcher=dispatcher,
+        task_group=task_group,
+        execution_catalog=args.execution_catalog,
+    )
     if resume_blocked_dispatcher and args.retry:
         command.append("--retry-blocked")
     try:
diff --git a/agent-ops/skills/common/prepare-milestone-workspace/tests/test_prepare_workspace.py b/agent-ops/skills/common/prepare-milestone-workspace/tests/test_prepare_workspace.py
index 1a799f62..e31a2fa9 100644
--- a/agent-ops/skills/common/prepare-milestone-workspace/tests/test_prepare_workspace.py
+++ b/agent-ops/skills/common/prepare-milestone-workspace/tests/test_prepare_workspace.py
@@ -51,6 +51,60 @@ class PrepareWorkspaceTest(unittest.TestCase):
             Path("/tmp/example/sample-feature-worktree"),
         )
 
+    def test_dispatcher_prefers_project_override_and_private_pair(self) -> None:
+        with tempfile.TemporaryDirectory() as raw:
+            workspace = Path(raw)
+            common = (
+                workspace
+                / "agent-ops/skills/common/orchestrate-agent-task-loop/scripts/dispatch.py"
+            )
+            project = (
+                workspace
+                / "agent-ops/skills/project/orchestrate-agent-task-loop/scripts/dispatch.py"
+            )
+            private_root = (
+                workspace / "agent-ops/skills/private/orchestrate-agent-task-loop"
+            )
+            private = private_root / "scripts/dispatch.py"
+            for path in (common, project, private):
+                path.parent.mkdir(parents=True, exist_ok=True)
+                path.touch()
+
+            self.assertEqual(MODULE.dispatcher_script(workspace), project)
+
+            (private_root / "SKILL.md").touch()
+            self.assertEqual(MODULE.dispatcher_script(workspace), private)
+
+            project.unlink()
+            self.assertEqual(MODULE.dispatcher_script(workspace), common)
+
+    def test_dispatcher_command_injects_catalog_only_for_common_runtime(self) -> None:
+        workspace = Path("/repo")
+        common = (
+            workspace
+            / "agent-ops/skills/common/orchestrate-agent-task-loop/scripts/dispatch.py"
+        )
+        project = (
+            workspace
+            / "agent-ops/skills/project/orchestrate-agent-task-loop/scripts/dispatch.py"
+        )
+
+        common_command = MODULE.dispatcher_command(
+            workspace=workspace,
+            dispatcher=common,
+            task_group="m-sample",
+            execution_catalog="/runtime/catalog.json",
+        )
+        project_command = MODULE.dispatcher_command(
+            workspace=workspace,
+            dispatcher=project,
+            task_group="m-sample",
+            execution_catalog="/runtime/catalog.json",
+        )
+
+        self.assertIn("--execution-catalog", common_command)
+        self.assertNotIn("--execution-catalog", project_command)
+
     def test_epic_document_range_is_one_based_and_inclusive(self) -> None:
         epics = MODULE.parse_epics(
             """## 기능