diff --git a/packages/web/CONTRIBUTING.md b/packages/web/CONTRIBUTING.md
new file mode 100644
index 0000000..1f83885
--- /dev/null
+++ b/packages/web/CONTRIBUTING.md
@@ -0,0 +1,42 @@
+# Contributing (web UI)
+
+Conventions for editors, dialogs, and routing in `packages/web`.
+
+## Entity editing patterns
+
+### Modal + route deep-link (simple entities)
+
+Use a list page with a route-driven editor modal for:
+
+- Secrets (`/secrets`, `/secrets/new`, `/secrets/:owner/:name/edit`)
+- Variables
+- Profiles
+- Auth profiles (`/auth`, …)
+- Users
+
+Prefer [`useRouteDrivenModal`](src/hooks/useRouteDrivenModal.js) to open/close the modal from the URL, keep a single `openedRouteKey` guard, and navigate back to the list path on close.
+
+Navigate to `/…/new` or `/…/:id/edit` from list actions; do not open the editor with local state alone when a deep-link route exists.
+
+### Full-page editors
+
+Scripts and workflows use dedicated full-page editors (not list+modal). Keep create/edit as their own routes and leave the list page for browsing only.
+
+### Known exception: Responses
+
+The Responses page may keep inline editing (no modal / no full-page editor). Treat that as intentional; do not refactor it to modal+route unless product requirements change.
+
+## Components
+
+| Use | For |
+|---|---|
+| `ConfirmDialog` | Deletes and other yes/no confirmations |
+| `FormInput` / `FormSelect` | Form fields in modals and pages |
+| `Modal` | Custom dialog chrome when `ConfirmDialog` is not enough |
+
+## Naming: `*Dialog` vs `*Modal`
+
+- **`*Dialog`** — confirmations and pickers (e.g. `ConfirmDialog`, `AddTriggerDialog`, `AddScriptDialog`, `DuplicateWorkflowDialog`)
+- **`*Modal`** — entity editors (e.g. `SecretEditorModal`, `ProfileEditorModal`, `AuthEditorModal`)
+
+When adding a new overlay, pick the suffix from the table above. Do not rename existing `*EditorModal` components solely for consistency with older code.
diff --git a/packages/web/src/components/workflow/AddTriggerDialog.jsx b/packages/web/src/components/workflow/AddTriggerDialog.jsx
new file mode 100644
index 0000000..a7424c2
--- /dev/null
+++ b/packages/web/src/components/workflow/AddTriggerDialog.jsx
@@ -0,0 +1,68 @@
+import { useState } from "react";
+
+export function AddTriggerDialog({ open, onClose, onPick }) {
+  const [kind, setKind] = useState("HTTP");
+  if (!open) return null;
+
+  return (
+    <dialog className="modal modal-open">
+      <div className="modal-box">
+        <h3 className="font-bold text-lg">Add trigger</h3>
+        <div className="form-control mt-3">
+          <label className="label cursor-pointer justify-start gap-3">
+            <input
+              type="radio"
+              name="trig-kind"
+              className="radio radio-sm"
+              checked={kind === "HTTP"}
+              onChange={() => setKind("HTTP")}
+            />
+            <span>
+              HTTP — webhook at <span className="font-mono">/u/owner/path</span>
+            </span>
+          </label>
+          <label className="label cursor-pointer justify-start gap-3">
+            <input
+              type="radio"
+              name="trig-kind"
+              className="radio radio-sm"
+              checked={kind === "cron"}
+              onChange={() => setKind("cron")}
+            />
+            <span>Cron — run on a schedule</span>
+          </label>
+          <label className="label cursor-pointer justify-start gap-3">
+            <input
+              type="radio"
+              name="trig-kind"
+              className="radio radio-sm"
+              checked={kind === "workflow"}
+              onChange={() => setKind("workflow")}
+            />
+            <span>Workflow — callable by other workflows</span>
+          </label>
+        </div>
+        <div className="modal-action">
+          <button type="button" className="btn" onClick={onClose}>
+            Cancel
+          </button>
+          <button
+            type="button"
+            className="btn btn-primary"
+            onClick={() => {
+              onPick(kind);
+              setKind("HTTP");
+            }}
+          >
+            Add
+          </button>
+        </div>
+      </div>
+      <form method="dialog" className="modal-backdrop">
+        <button type="button" onClick={onClose}>
+          close
+        </button>
+      </form>
+    </dialog>
+  );
+}
diff --git a/packages/web/src/components/workflow/TriggerCard.jsx b/packages/web/src/components/workflow/TriggerCard.jsx
index 8296d75..581f274 100644
--- a/packages/web/src/components/workflow/TriggerCard.jsx
+++ b/packages/web/src/components/workflow/TriggerCard.jsx
@@ -519,68 +519,3 @@ function FailureAlertFields({ trigger, disabled, onChange, alertDestinations })
     </div>
   );
 }
-
-export function AddTriggerDialog({ open, onClose, onPick }) {
-  const [kind, setKind] = useState("HTTP");
-  if (!open) return null;
-
-  return (
-    <dialog className="modal modal-open">
-      <div className="modal-box">
-        <h3 className="font-bold text-lg">Add trigger</h3>
-        <div className="form-control mt-3">
-          <label className="label cursor-pointer justify-start gap-3">
-            <input
-              type="radio"
-              name="trig-kind"
-              className="radio radio-sm"
-              checked={kind === "HTTP"}
-              onChange={() => setKind("HTTP")}
-            />
-            <span>HTTP — webhook at <span className="font-mono">/u/owner/path</span></span>
-          </label>
-          <label className="label cursor-pointer justify-start gap-3">
-            <input
-              type="radio"
-              name="trig-kind"
-              className="radio radio-sm"
-              checked={kind === "cron"}
-              onChange={() => setKind("cron")}
-            />
-            <span>Cron — run on a schedule</span>
-          </label>
-          <label className="label cursor-pointer justify-start gap-3">
-            <input
-              type="radio"
-              name="trig-kind"
-              className="radio radio-sm"
-              checked={kind === "workflow"}
-              onChange={() => setKind("workflow")}
-            />
-            <span>Workflow — callable by other workflows</span>
-          </label>
-        </div>
-        <div className="modal-action">
-          <button type="button" className="btn" onClick={onClose}>
-            Cancel
-          </button>
-          <button
-            type="button"
-            className="btn btn-primary"
-            onClick={() => {
-              onPick(kind);
-              setKind("HTTP");
-            }}
-          >
-            Add
-          </button>
-        </div>
-      </div>
-      <form method="dialog" className="modal-backdrop">
-        <button type="button" onClick={onClose}>
-          close
-        </button>
-      </form>
-    </dialog>
-  );
-}
diff --git a/packages/web/src/components/workflow/TriggersTab.jsx b/packages/web/src/components/workflow/TriggersTab.jsx
index 977108d..00028cf 100644
--- a/packages/web/src/components/workflow/TriggersTab.jsx
+++ b/packages/web/src/components/workflow/TriggersTab.jsx
@@ -15,7 +15,8 @@ import {
 } from "@dnd-kit/sortable";
 import { LuPlus } from "react-icons/lu";
 import { newCronTrigger, newHttpTrigger, newWorkflowTrigger } from "../../lib/workflow-doc.js";
-import { AddTriggerDialog, TriggerCard } from "./TriggerCard.jsx";
+import { AddTriggerDialog } from "./AddTriggerDialog.jsx";
+import { TriggerCard } from "./TriggerCard.jsx";
 
 export function TriggersTab({
   doc,
diff --git a/packages/web/src/hooks/useRouteDrivenModal.js b/packages/web/src/hooks/useRouteDrivenModal.js
new file mode 100644
index 0000000..8406984
--- /dev/null
+++ b/packages/web/src/hooks/useRouteDrivenModal.js
@@ -0,0 +1,86 @@
+import { useEffect, useRef, useState } from "react";
+import { useNavigate } from "react-router-dom";
+
+const EMPTY_DEPS = Object.freeze([]);
+
+/**
+ * Open/close an editor modal driven by list / new / edit routes.
+ *
+ * Pages supply route flags, list path, and builders for the editor payload.
+ * The hook owns `editor` state, the opened-route guard ref, and navigation
+ * back to the list when closing from a deep-linked route.
+ *
+ * @param {object} options
+ * @param {boolean} options.isNewRoute
+ * @param {boolean} options.isEditRoute
+ * @param {string | (() => string)} options.listPath
+ * @param {() => string} [options.newRouteKey] defaults to `"new"`
+ * @param {() => boolean} [options.canOpenNew] return false to wait (e.g. owners loading)
+ * @param {() => void} [options.onBeforeOpenNew] side effects before opening (e.g. sync filter)
+ * @param {() => object} options.buildNewEditor
+ * @param {() => string} options.editRouteKey
+ * @param {() => boolean} [options.canOpenEdit] return false to wait / prepare (e.g. sync owner)
+ * @param {() => void} [options.onOpenEdit] after key is claimed (e.g. highlight row)
+ * @param {() => object} options.buildEditEditor
+ * @param {unknown[]} [options.newDeps] extra deps for the new-route effect
+ * @param {unknown[]} [options.editDeps] extra deps for the edit-route effect
+ */
+export function useRouteDrivenModal({
+  isNewRoute,
+  isEditRoute,
+  listPath,
+  newRouteKey = () => "new",
+  canOpenNew,
+  onBeforeOpenNew,
+  buildNewEditor,
+  editRouteKey,
+  canOpenEdit,
+  onOpenEdit,
+  buildEditEditor,
+  newDeps = EMPTY_DEPS,
+  editDeps = EMPTY_DEPS,
+}) {
+  const navigate = useNavigate();
+  const [editor, setEditor] = useState(null);
+  const openedRouteKey = useRef(null);
+
+  function resolveListPath() {
+    return typeof listPath === "function" ? listPath() : listPath;
+  }
+
+  function closeEditor() {
+    setEditor(null);
+    openedRouteKey.current = null;
+    if (isNewRoute || isEditRoute) {
+      navigate(resolveListPath(), { replace: true });
+    }
+  }
+
+  useEffect(() => {
+    if (!isNewRoute) return;
+    const key = newRouteKey();
+    if (openedRouteKey.current === key) return;
+    if (canOpenNew && !canOpenNew()) return;
+    onBeforeOpenNew?.();
+    openedRouteKey.current = key;
+    setEditor(buildNewEditor());
+    // Callers pass explicit newDeps; builders close over latest render values.
+    // eslint-disable-next-line react-hooks/exhaustive-deps -- intentional
+  }, [isNewRoute, ...newDeps]);
+
+  useEffect(() => {
+    if (!isEditRoute) {
+      if (!isNewRoute) openedRouteKey.current = null;
+      return;
+    }
+    if (canOpenEdit && !canOpenEdit()) return;
+    const key = editRouteKey();
+    if (openedRouteKey.current === key) return;
+    openedRouteKey.current = key;
+    onOpenEdit?.();
+    setEditor(buildEditEditor());
+    // eslint-disable-next-line react-hooks/exhaustive-deps -- intentional
+  }, [isEditRoute, isNewRoute, ...editDeps]);
+
+  return { editor, setEditor, closeEditor, openedRouteKey };
+}
diff --git a/packages/web/src/pages/AuthProfilesPage.jsx b/packages/web/src/pages/AuthProfilesPage.jsx
index 06f1922..446d9a3 100644
--- a/packages/web/src/pages/AuthProfilesPage.jsx
+++ b/packages/web/src/pages/AuthProfilesPage.jsx
@@ -1,4 +1,4 @@
-import { useEffect, useRef, useState } from "react";
+import { useState } from "react";
 import { useLocation, useNavigate, useParams } from "react-router-dom";
 import { LuEye, LuEyeOff, LuPencil, LuPlus, LuTrash2 } from "react-icons/lu";
 import { errorMessage } from "../api/client.js";
@@ -9,6 +9,7 @@ import {
 } from "../api/hooks.js";
 import { AuthEditorModal } from "../components/AuthEditorModal.jsx";
 import { ConfirmDialog } from "../components/ConfirmDialog.jsx";
+import { useRouteDrivenModal } from "../hooks/useRouteDrivenModal.js";
 import { formatTime } from "../lib/format.jsx";
 
 function CredDisplay({ field, fieldKey, authId, cache, onRevealed }) {
@@ -149,43 +150,24 @@ export function AuthProfilesPage() {
 
   const { data: auths = [], isLoading } = useHttpAuths();
   const del = useDeleteHttpAuth();
-  const [editor, setEditor] = useState(null);
   const [confirmDelete, setConfirmDelete] = useState(null);
   /** @type {[Record<string, Record<string, string>>, Function]} */
   const [revealCache, setRevealCache] = useState({});
-  const openedRouteKey = useRef(null);
 
-  function closeEditor() {
-    setEditor(null);
-    openedRouteKey.current = null;
-    if (isNewRoute || isEditRoute) {
-      navigate("/auth", { replace: true });
-    }
-  }
-
-  useEffect(() => {
-    if (!isNewRoute) return;
-    if (openedRouteKey.current === "new") return;
-    openedRouteKey.current = "new";
-    setEditor({ mode: "add" });
-  }, [isNewRoute]);
-
-  useEffect(() => {
-    if (!isEditRoute) {
-      if (!isNewRoute) openedRouteKey.current = null;
-      return;
-    }
-    if (isLoading) return;
-    const key = `edit:${routeName}`;
-    if (openedRouteKey.current === key) return;
-    openedRouteKey.current = key;
-    const auth = auths.find((a) => a.name === routeName);
-    if (!auth) {
-      setEditor({ mode: "add" });
-      return;
-    }
-    setEditor({ mode: "edit", auth });
-  }, [isEditRoute, isNewRoute, routeName, isLoading, auths]);
+  const { editor, closeEditor } = useRouteDrivenModal({
+    isNewRoute,
+    isEditRoute,
+    listPath: "/auth",
+    buildNewEditor: () => ({ mode: "add" }),
+    editRouteKey: () => `edit:${routeName}`,
+    canOpenEdit: () => !isLoading,
+    buildEditEditor: () => {
+      const auth = auths.find((a) => a.name === routeName);
+      if (!auth) return { mode: "add" };
+      return { mode: "edit", auth };
+    },
+    editDeps: [routeName, isLoading, auths],
+  });
 
   return (
     <div className="space-y-4">
diff --git a/packages/web/src/pages/ProfilesPage.jsx b/packages/web/src/pages/ProfilesPage.jsx
index 0fb4314..12f5224 100644
--- a/packages/web/src/pages/ProfilesPage.jsx
+++ b/packages/web/src/pages/ProfilesPage.jsx
@@ -7,6 +7,7 @@ import { FormSelect } from "../components/FormControls.jsx";
 import { Modal } from "../components/Modal.jsx";
 import { ProfileEditorModal } from "../components/ProfileEditorModal.jsx";
 import { ScriptIcon } from "../components/ScriptIcon.jsx";
+import { useRouteDrivenModal } from "../hooks/useRouteDrivenModal.js";
 import { formatTime } from "../lib/format.jsx";
 
 function previewConfig(config) {
@@ -42,84 +43,74 @@ export function ProfilesPage() {
   );
   const { data: profiles = [], isLoading } = useProfiles(ownerFilter || undefined);
   const del = useDeleteProfile();
-  const [editor, setEditor] = useState(null);
   const [confirmDelete, setConfirmDelete] = useState(null);
   const [highlightName, setHighlightName] = useState(() => routeName || "");
   const highlightRef = useRef(null);
-  const openedRouteKey = useRef(null);
 
   const listPath = ownerFilter
     ? `/profiles?owner=${encodeURIComponent(ownerFilter)}`
     : "/profiles";
 
-  function closeEditor() {
-    setEditor(null);
-    openedRouteKey.current = null;
-    if (isNewRoute || isEditRoute) {
-      navigate(listPath, { replace: true });
-    }
-  }
-
-  useEffect(() => {
-    if (!isNewRoute) return;
-    const key = `new:${params.get("owner") || ""}:${params.get("name") || ""}`;
-    if (openedRouteKey.current === key) return;
-    if (!params.get("owner") && !ownerFilter && owners.length === 0) return;
-    const owner = params.get("owner") || ownerFilter || owners[0] || "default";
-    if (params.get("owner")) setOwnerFilter(params.get("owner"));
-    openedRouteKey.current = key;
-    setEditor({
-      mode: "add",
-      initial: {
-        owner,
-        name: params.get("name") || "",
-        script: params.get("script") || "",
-        config: {},
-        description: "",
-      },
-    });
-  }, [isNewRoute, params, owners, ownerFilter]);
-
-  useEffect(() => {
-    if (!isEditRoute) {
-      if (!isNewRoute) openedRouteKey.current = null;
-      return;
-    }
-    if (ownerFilter !== routeOwner) {
-      setOwnerFilter(routeOwner);
-      return;
-    }
-    if (isLoading) return;
-    const key = `edit:${routeOwner}/${routeName}`;
-    if (openedRouteKey.current === key) return;
-    openedRouteKey.current = key;
-    setHighlightName(routeName);
-    const row = profiles.find((p) => p.owner === routeOwner && p.name === routeName);
-    if (row) {
-      setEditor({
-        mode: "edit",
+  const { editor, closeEditor } = useRouteDrivenModal({
+    isNewRoute,
+    isEditRoute,
+    listPath,
+    newRouteKey: () => `new:${params.get("owner") || ""}:${params.get("name") || ""}`,
+    canOpenNew: () => Boolean(params.get("owner") || ownerFilter || owners.length > 0),
+    onBeforeOpenNew: () => {
+      if (params.get("owner")) setOwnerFilter(params.get("owner"));
+    },
+    buildNewEditor: () => {
+      const owner = params.get("owner") || ownerFilter || owners[0] || "default";
+      return {
+        mode: "add",
         initial: {
-          owner: row.owner,
-          name: row.name,
-          script: row.script,
-          config: row.config,
-          description: row.description,
+          owner,
+          name: params.get("name") || "",
+          script: params.get("script") || "",
+          config: {},
+          description: "",
         },
-        usageCount: row.usageCount ?? 0,
-      });
-      return;
-    }
-    setEditor({
-      mode: "add",
-      initial: {
-        owner: routeOwner,
-        name: routeName,
-        script: "",
-        config: {},
-        description: "",
-      },
-    });
-  }, [isEditRoute, isNewRoute, routeOwner, routeName, ownerFilter, isLoading, profiles]);
+      };
+    },
+    editRouteKey: () => `edit:${routeOwner}/${routeName}`,
+    canOpenEdit: () => {
+      if (ownerFilter !== routeOwner) {
+        setOwnerFilter(routeOwner);
+        return false;
+      }
+      return !isLoading;
+    },
+    onOpenEdit: () => setHighlightName(routeName),
+    buildEditEditor: () => {
+      const row = profiles.find((p) => p.owner === routeOwner && p.name === routeName);
+      if (row) {
+        return {
+          mode: "edit",
+          initial: {
+            owner: row.owner,
+            name: row.name,
+            script: row.script,
+            config: row.config,
+            description: row.description,
+          },
+          usageCount: row.usageCount ?? 0,
+        };
+      }
+      return {
+        mode: "add",
+        initial: {
+          owner: routeOwner,
+          name: routeName,
+          script: "",
+          config: {},
+          description: "",
+        },
+      };
+    },
+    newDeps: [params, owners, ownerFilter],
+    editDeps: [routeOwner, routeName, ownerFilter, isLoading, profiles],
+  });
 
   useEffect(() => {
     if (!highlightName || isLoading) return;
diff --git a/packages/web/src/pages/SecretsPage.jsx b/packages/web/src/pages/SecretsPage.jsx
index 5333ead..7bc5325 100644
--- a/packages/web/src/pages/SecretsPage.jsx
+++ b/packages/web/src/pages/SecretsPage.jsx
@@ -6,6 +6,7 @@ import { useDeleteSecret, useOwners, useSecrets } from "../api/hooks.js";
 import { ConfirmDialog } from "../components/ConfirmDialog.jsx";
 import { FormSelect } from "../components/FormControls.jsx";
 import { SecretEditorModal } from "../components/SecretEditorModal.jsx";
+import { useRouteDrivenModal } from "../hooks/useRouteDrivenModal.js";
 import { formatTime } from "../lib/format.jsx";
 
 export function SecretsPage() {
@@ -22,56 +23,46 @@ export function SecretsPage() {
   );
   const { data: secrets = [], isLoading } = useSecrets(ownerFilter || undefined);
   const del = useDeleteSecret();
-  const [editor, setEditor] = useState(null);
   const [confirmDelete, setConfirmDelete] = useState(null);
   const [highlightName, setHighlightName] = useState(() => routeName || "");
   const highlightRef = useRef(null);
-  const openedRouteKey = useRef(null);
 
   const listPath = ownerFilter
     ? `/secrets?owner=${encodeURIComponent(ownerFilter)}`
     : "/secrets";
 
-  function closeEditor() {
-    setEditor(null);
-    openedRouteKey.current = null;
-    if (isNewRoute || isEditRoute) {
-      navigate(listPath, { replace: true });
-    }
-  }
-
-  useEffect(() => {
-    if (!isNewRoute) return;
-    const key = `new:${params.get("owner") || ""}:${params.get("name") || ""}`;
-    if (openedRouteKey.current === key) return;
-    if (!params.get("owner") && !ownerFilter && owners.length === 0) return;
-    const owner = params.get("owner") || ownerFilter || owners[0] || "default";
-    if (params.get("owner")) setOwnerFilter(params.get("owner"));
-    openedRouteKey.current = key;
-    setEditor({
-      mode: "add",
-      initial: { owner, name: params.get("name") || "" },
-    });
-  }, [isNewRoute, params, owners, ownerFilter]);
-
-  useEffect(() => {
-    if (!isEditRoute) {
-      if (!isNewRoute) openedRouteKey.current = null;
-      return;
-    }
-    if (ownerFilter !== routeOwner) {
-      setOwnerFilter(routeOwner);
-      return;
-    }
-    const key = `edit:${routeOwner}/${routeName}`;
-    if (openedRouteKey.current === key) return;
-    openedRouteKey.current = key;
-    setHighlightName(routeName);
-    setEditor({
+  const { editor, closeEditor } = useRouteDrivenModal({
+    isNewRoute,
+    isEditRoute,
+    listPath,
+    newRouteKey: () => `new:${params.get("owner") || ""}:${params.get("name") || ""}`,
+    canOpenNew: () => Boolean(params.get("owner") || ownerFilter || owners.length > 0),
+    onBeforeOpenNew: () => {
+      if (params.get("owner")) setOwnerFilter(params.get("owner"));
+    },
+    buildNewEditor: () => {
+      const owner = params.get("owner") || ownerFilter || owners[0] || "default";
+      return {
+        mode: "add",
+        initial: { owner, name: params.get("name") || "" },
+      };
+    },
+    editRouteKey: () => `edit:${routeOwner}/${routeName}`,
+    canOpenEdit: () => {
+      if (ownerFilter !== routeOwner) {
+        setOwnerFilter(routeOwner);
+        return false;
+      }
+      return true;
+    },
+    onOpenEdit: () => setHighlightName(routeName),
+    buildEditEditor: () => ({
       mode: "replace",
       initial: { owner: routeOwner, name: routeName },
-    });
-  }, [isEditRoute, isNewRoute, routeOwner, routeName, ownerFilter]);
+    }),
+    newDeps: [params, owners, ownerFilter],
+    editDeps: [routeOwner, routeName, ownerFilter],
+  });
 
   useEffect(() => {
     if (!highlightName || isLoading) return;
diff --git a/packages/web/src/pages/UsersPage.jsx b/packages/web/src/pages/UsersPage.jsx
index 114ddb7..9b5acd0 100644
--- a/packages/web/src/pages/UsersPage.jsx
+++ b/packages/web/src/pages/UsersPage.jsx
@@ -1,10 +1,11 @@
-import { useEffect, useRef, useState } from "react";
+import { useState } from "react";
 import { useLocation, useNavigate, useParams } from "react-router-dom";
 import { LuPencil, LuPlus, LuTrash2 } from "react-icons/lu";
 import { errorMessage } from "../api/client.js";
 import { useDeleteUser, useUsers } from "../api/hooks.js";
 import { ConfirmDialog } from "../components/ConfirmDialog.jsx";
 import { UserEditorModal } from "../components/UserEditorModal.jsx";
+import { useRouteDrivenModal } from "../hooks/useRouteDrivenModal.js";
 
 export function UsersPage() {
   const navigate = useNavigate();
@@ -15,41 +16,22 @@ export function UsersPage() {
 
   const { data: users = [], isLoading } = useUsers();
   const del = useDeleteUser();
-  const [editor, setEditor] = useState(null);
   const [confirmDelete, setConfirmDelete] = useState(null);
-  const openedRouteKey = useRef(null);
 
-  function closeEditor() {
-    setEditor(null);
-    openedRouteKey.current = null;
-    if (isNewRoute || isEditRoute) {
-      navigate("/users", { replace: true });
-    }
-  }
-
-  useEffect(() => {
-    if (!isNewRoute) return;
-    if (openedRouteKey.current === "new") return;
-    openedRouteKey.current = "new";
-    setEditor({ mode: "add" });
-  }, [isNewRoute]);
-
-  useEffect(() => {
-    if (!isEditRoute) {
-      if (!isNewRoute) openedRouteKey.current = null;
-      return;
-    }
-    if (isLoading) return;
-    const key = `edit:${routeUsername}`;
-    if (openedRouteKey.current === key) return;
-    openedRouteKey.current = key;
-    const user = users.find((u) => u.username === routeUsername);
-    if (!user) {
-      setEditor({ mode: "add" });
-      return;
-    }
-    setEditor({ mode: "edit", user });
-  }, [isEditRoute, isNewRoute, routeUsername, isLoading, users]);
+  const { editor, closeEditor } = useRouteDrivenModal({
+    isNewRoute,
+    isEditRoute,
+    listPath: "/users",
+    buildNewEditor: () => ({ mode: "add" }),
+    editRouteKey: () => `edit:${routeUsername}`,
+    canOpenEdit: () => !isLoading,
+    buildEditEditor: () => {
+      const user = users.find((u) => u.username === routeUsername);
+      if (!user) return { mode: "add" };
+      return { mode: "edit", user };
+    },
+    editDeps: [routeUsername, isLoading, users],
+  });
 
   return (
     <div className="space-y-4">
diff --git a/packages/web/src/pages/VariablesPage.jsx b/packages/web/src/pages/VariablesPage.jsx
index 48b5bf5..7266ee4 100644
--- a/packages/web/src/pages/VariablesPage.jsx
+++ b/packages/web/src/pages/VariablesPage.jsx
@@ -6,6 +6,7 @@ import { useDeleteVariable, useOwners, useVariables } from "../api/hooks.js";
 import { ConfirmDialog } from "../components/ConfirmDialog.jsx";
 import { FormSelect } from "../components/FormControls.jsx";
 import { VariableEditorModal } from "../components/VariableEditorModal.jsx";
+import { useRouteDrivenModal } from "../hooks/useRouteDrivenModal.js";
 import { formatTime } from "../lib/format.jsx";
 
 function displayValue(value) {
@@ -27,80 +28,70 @@ export function VariablesPage() {
   );
   const { data: variables = [], isLoading } = useVariables(ownerFilter || undefined);
   const del = useDeleteVariable();
-  const [editor, setEditor] = useState(null);
   const [confirmDelete, setConfirmDelete] = useState(null);
   const [highlightName, setHighlightName] = useState(() => routeName || "");
   const highlightRef = useRef(null);
-  const openedRouteKey = useRef(null);
 
   const listPath = ownerFilter
     ? `/variables?owner=${encodeURIComponent(ownerFilter)}`
     : "/variables";
 
-  function closeEditor() {
-    setEditor(null);
-    openedRouteKey.current = null;
-    if (isNewRoute || isEditRoute) {
-      navigate(listPath, { replace: true });
-    }
-  }
-
-  useEffect(() => {
-    if (!isNewRoute) return;
-    const key = `new:${params.get("owner") || ""}:${params.get("name") || ""}`;
-    if (openedRouteKey.current === key) return;
-    if (!params.get("owner") && !ownerFilter && owners.length === 0) return;
-    const owner = params.get("owner") || ownerFilter || owners[0] || "default";
-    if (params.get("owner")) setOwnerFilter(params.get("owner"));
-    openedRouteKey.current = key;
-    setEditor({
-      mode: "add",
-      initial: {
-        owner,
-        name: params.get("name") || "",
-        type: "string",
-        value: "",
-      },
-    });
-  }, [isNewRoute, params, owners, ownerFilter]);
-
-  useEffect(() => {
-    if (!isEditRoute) {
-      if (!isNewRoute) openedRouteKey.current = null;
-      return;
-    }
-    if (ownerFilter !== routeOwner) {
-      setOwnerFilter(routeOwner);
-      return;
-    }
-    if (isLoading) return;
-    const key = `edit:${routeOwner}/${routeName}`;
-    if (openedRouteKey.current === key) return;
-    openedRouteKey.current = key;
-    setHighlightName(routeName);
-    const row = variables.find((v) => v.owner === routeOwner && v.name === routeName);
-    if (row) {
-      setEditor({
-        mode: "edit",
+  const { editor, closeEditor } = useRouteDrivenModal({
+    isNewRoute,
+    isEditRoute,
+    listPath,
+    newRouteKey: () => `new:${params.get("owner") || ""}:${params.get("name") || ""}`,
+    canOpenNew: () => Boolean(params.get("owner") || ownerFilter || owners.length > 0),
+    onBeforeOpenNew: () => {
+      if (params.get("owner")) setOwnerFilter(params.get("owner"));
+    },
+    buildNewEditor: () => {
+      const owner = params.get("owner") || ownerFilter || owners[0] || "default";
+      return {
+        mode: "add",
         initial: {
-          owner: row.owner,
-          name: row.name,
-          type: row.type,
-          value: row.value,
+          owner,
+          name: params.get("name") || "",
+          type: "string",
+          value: "",
         },
-      });
-      return;
-    }
-    setEditor({
-      mode: "add",
-      initial: {
-        owner: routeOwner,
-        name: routeName,
-        type: "string",
-        value: "",
-      },
-    });
-  }, [isEditRoute, isNewRoute, routeOwner, routeName, ownerFilter, isLoading, variables]);
+      };
+    },
+    editRouteKey: () => `edit:${routeOwner}/${routeName}`,
+    canOpenEdit: () => {
+      if (ownerFilter !== routeOwner) {
+        setOwnerFilter(routeOwner);
+        return false;
+      }
+      return !isLoading;
+    },
+    onOpenEdit: () => setHighlightName(routeName),
+    buildEditEditor: () => {
+      const row = variables.find((v) => v.owner === routeOwner && v.name === routeName);
+      if (row) {
+        return {
+          mode: "edit",
+          initial: {
+            owner: row.owner,
+            name: row.name,
+            type: row.type,
+            value: row.value,
+          },
+        };
+      }
+      return {
+        mode: "add",
+        initial: {
+          owner: routeOwner,
+          name: routeName,
+          type: "string",
+          value: "",
+        },
+      };
+    },
+    newDeps: [params, owners, ownerFilter],
+    editDeps: [routeOwner, routeName, ownerFilter, isLoading, variables],
+  });
 
   useEffect(() => {
     if (!highlightName || isLoading) return;