fix: Validate Open in entries before selection

src/features/app/components/OpenAppMenu.tsx

@@ -121,23 +121,38 @@ export function OpenAppMenu({
     };
   }, [openMenuOpen]);
 
+  const resolveAppName = (target: OpenTarget) =>
+    (target.target.appName ?? "").trim();
+  const resolveCommand = (target: OpenTarget) =>
+    (target.target.command ?? "").trim();
+  const canOpenTarget = (target: OpenTarget) => {
+    if (target.target.kind === "finder") {
+      return true;
+    }
+    if (target.target.kind === "command") {
+      return Boolean(resolveCommand(target));
+    }
+    return Boolean(resolveAppName(target));
+  };
+
   const openWithTarget = async (target: OpenTarget) => {
     try {
       if (target.target.kind === "finder") {
         await revealItemInDir(path);
         return;
       }
       if (target.target.kind === "command") {
-        if (!target.target.command) {
+        const command = resolveCommand(target);
+        if (!command) {
           return;
         }
         await openWorkspaceIn(path, {
-          command: target.target.command,
+          command,
           args: target.target.args,
         });
         return;
       }
-      const appName = target.target.appName || target.label;
+      const appName = resolveAppName(target);
       if (!appName) {
         return;
       }
@@ -151,29 +166,40 @@ export function OpenAppMenu({
   };
 
   const handleOpen = async () => {
-    if (!selectedOpenTarget) {
+    if (!selectedOpenTarget || !canOpenTarget(selectedOpenTarget)) {
       return;
     }
     await openWithTarget(selectedOpenTarget);
   };
 
   const handleSelectOpenTarget = async (target: OpenTarget) => {
+    if (!canOpenTarget(target)) {
+      return;
+    }
     onSelectOpenAppId(target.id);
     window.localStorage.setItem(OPEN_APP_STORAGE_KEY, target.id);
     setOpenMenuOpen(false);
     await openWithTarget(target);
   };
 
+  const selectedCanOpen = canOpenTarget(selectedOpenTarget);
+  const openLabel = selectedCanOpen
+    ? `Open in ${selectedOpenTarget.label}`
+    : selectedOpenTarget.target.kind === "command"
+      ? "Set command in Settings"
+      : "Set app name in Settings";
+
   return (
     <div className="open-app-menu" ref={openMenuRef}>
       <div className="open-app-button">
         <button
           type="button"
           className="ghost main-header-action open-app-action"
           onClick={handleOpen}
+          disabled={!selectedCanOpen}
           data-tauri-drag-region="false"
           aria-label={`Open in ${selectedOpenTarget.label}`}
-          title={`Open in ${selectedOpenTarget.label}`}
+          title={openLabel}
         >
           <span className="open-app-label">
             <img
@@ -201,13 +227,15 @@ export function OpenAppMenu({
       {openMenuOpen && (
         <div className="open-app-dropdown" role="menu">
           {resolvedOpenTargets.map((target) => (
+            // Keep entries visible but disable ones missing required config.
             <button
               key={target.id}
               type="button"
               className={`open-app-option${
                 target.id === resolvedOpenAppId ? " is-active" : ""
               }`}
               onClick={() => handleSelectOpenTarget(target)}
+              disabled={!canOpenTarget(target)}
               role="menuitem"
               data-tauri-drag-region="false"
             >

src/features/messages/hooks/useFileLinkOpener.ts

@@ -27,6 +27,18 @@ const DEFAULT_OPEN_TARGET: OpenTarget = {
   args: [],
 };
 
+const resolveAppName = (target: OpenTarget) => (target.appName ?? "").trim();
+const resolveCommand = (target: OpenTarget) => (target.command ?? "").trim();
+const canOpenTarget = (target: OpenTarget) => {
+  if (target.kind === "finder") {
+    return true;
+  }
+  if (target.kind === "command") {
+    return Boolean(resolveCommand(target));
+  }
+  return Boolean(resolveAppName(target));
+};
+
 function resolveFilePath(path: string, workspacePath?: string | null) {
   const trimmed = path.trim();
   if (!workspacePath) {
@@ -94,23 +106,27 @@ export function useFileLinkOpener(
       const resolvedPath = resolveFilePath(stripLineSuffix(rawPath), workspacePath);
 
       try {
+        if (!canOpenTarget(target)) {
+          return;
+        }
         if (target.kind === "finder") {
           await revealItemInDir(resolvedPath);
           return;
         }
 
         if (target.kind === "command") {
-          if (!target.command) {
+          const command = resolveCommand(target);
+          if (!command) {
             return;
           }
           await openWorkspaceIn(resolvedPath, {
-            command: target.command,
+            command,
             args: target.args,
           });
           return;
         }
 
-        const appName = (target.appName || target.label || "").trim();
+        const appName = resolveAppName(target);
         if (!appName) {
           return;
         }
@@ -143,18 +159,23 @@ export function useFileLinkOpener(
           openTargets[0]),
       };
       const resolvedPath = resolveFilePath(stripLineSuffix(rawPath), workspacePath);
-      const appName = (target.appName || target.label || "").trim();
+      const appName = resolveAppName(target);
+      const command = resolveCommand(target);
+      const canOpen = canOpenTarget(target);
       const openLabel =
         target.kind === "finder"
           ? revealLabel()
           : target.kind === "command"
-            ? `Open in ${target.label}`
+            ? command
+              ? `Open in ${target.label}`
+              : "Set command in Settings"
             : appName
               ? `Open in ${appName}`
-              : "Open Link";
+              : "Set app name in Settings";
       const items = [
         await MenuItem.new({
           text: openLabel,
+          enabled: canOpen,
           action: async () => {
             await openFileLink(rawPath);
           },

src/features/settings/components/SettingsView.tsx

@@ -243,6 +243,34 @@ const buildOpenAppDrafts = (targets: OpenAppTarget[]): OpenAppDraft[] =>
     argsText: target.args.join(" "),
   }));
 
+const isOpenAppLabelValid = (label: string) => label.trim().length > 0;
+
+const isOpenAppDraftComplete = (draft: OpenAppDraft) => {
+  if (!isOpenAppLabelValid(draft.label)) {
+    return false;
+  }
+  if (draft.kind === "app") {
+    return Boolean(draft.appName?.trim());
+  }
+  if (draft.kind === "command") {
+    return Boolean(draft.command?.trim());
+  }
+  return true;
+};
+
+const isOpenAppTargetComplete = (target: OpenAppTarget) => {
+  if (!isOpenAppLabelValid(target.label)) {
+    return false;
+  }
+  if (target.kind === "app") {
+    return Boolean(target.appName?.trim());
+  }
+  if (target.kind === "command") {
+    return Boolean(target.command?.trim());
+  }
+  return true;
+};
+
 const createOpenAppId = () => {
   if (typeof crypto !== "undefined" && "randomUUID" in crypto) {
     return crypto.randomUUID();
@@ -702,8 +730,13 @@ export function SettingsView({
   const handleCommitOpenApps = useCallback(
     async (drafts: OpenAppDraft[], selectedId = openAppSelectedId) => {
       const nextTargets = normalizeOpenAppTargets(drafts);
+      const resolvedSelectedId = nextTargets.find(
+        (target) => target.id === selectedId && isOpenAppTargetComplete(target),
+      )?.id;
+      const firstCompleteId = nextTargets.find(isOpenAppTargetComplete)?.id;
       const nextSelectedId =
-        nextTargets.find((target) => target.id === selectedId)?.id ??
+        resolvedSelectedId ??
+        firstCompleteId ??
         nextTargets[0]?.id ??
         DEFAULT_OPEN_APP_ID;
       setOpenAppDrafts(buildOpenAppDrafts(nextTargets));
@@ -796,6 +829,10 @@ export function SettingsView({
   };
 
   const handleSelectOpenAppDefault = (id: string) => {
+    const selectedTarget = openAppDrafts.find((target) => target.id === id);
+    if (selectedTarget && !isOpenAppDraftComplete(selectedTarget)) {
+      return;
+    }
     setOpenAppSelectedId(id);
     if (typeof window !== "undefined") {
       window.localStorage.setItem(OPEN_APP_STORAGE_KEY, id);
@@ -2401,8 +2438,26 @@ export function SettingsView({
                       getKnownOpenAppIcon(target.id) ??
                       openAppIconById[target.id] ??
                       GENERIC_APP_ICON;
+                    const labelValid = isOpenAppLabelValid(target.label);
+                    const appNameValid =
+                      target.kind !== "app" || Boolean(target.appName?.trim());
+                    const commandValid =
+                      target.kind !== "command" || Boolean(target.command?.trim());
+                    const isComplete = labelValid && appNameValid && commandValid;
+                    const incompleteHint = !labelValid
+                      ? "Label required"
+                      : target.kind === "app"
+                        ? "App name required"
+                        : target.kind === "command"
+                          ? "Command required"
+                          : "Complete required fields";
                     return (
-                      <div key={target.id} className="settings-open-app-row">
+                      <div
+                        key={target.id}
+                        className={`settings-open-app-row${
+                          isComplete ? "" : " is-incomplete"
+                        }`}
+                      >
                         <div className="settings-open-app-icon-wrap" aria-hidden>
                           <img
                             className="settings-open-app-icon"
@@ -2428,6 +2483,7 @@ export function SettingsView({
                                 void handleCommitOpenApps(openAppDrafts);
                               }}
                               aria-label={`Open app label ${index + 1}`}
+                              data-invalid={!labelValid || undefined}
                             />
                           </label>
                           <label className="settings-open-app-field settings-open-app-field--type">
@@ -2464,6 +2520,7 @@ export function SettingsView({
                                   void handleCommitOpenApps(openAppDrafts);
                                 }}
                                 aria-label={`Open app name ${index + 1}`}
+                                data-invalid={!appNameValid || undefined}
                               />
                             </label>
                           )}
@@ -2483,6 +2540,7 @@ export function SettingsView({
                                   void handleCommitOpenApps(openAppDrafts);
                                 }}
                                 aria-label={`Open app command ${index + 1}`}
+                                data-invalid={!commandValid || undefined}
                               />
                             </label>
                           )}
@@ -2507,12 +2565,22 @@ export function SettingsView({
                           )}
                         </div>
                         <div className="settings-open-app-actions">
+                          {!isComplete && (
+                            <span
+                              className="settings-open-app-status"
+                              title={incompleteHint}
+                              aria-label={incompleteHint}
+                            >
+                              Incomplete
+                            </span>
+                          )}
                           <label className="settings-open-app-default">
                             <input
                               type="radio"
                               name="open-app-default"
                               checked={target.id === openAppSelectedId}
                               onChange={() => handleSelectOpenAppDefault(target.id)}
+                              disabled={!isComplete}
                             />
                             Default
                           </label>

src/styles/settings.css

@@ -494,6 +494,10 @@
   flex-wrap: wrap;
 }
 
+.settings-open-app-row.is-incomplete {
+  border-color: color-mix(in srgb, var(--status-error) 45%, var(--border-muted));
+}
+
 .settings-open-app-icon-wrap {
   flex: 0 0 auto;
   width: 24px;
@@ -535,6 +539,20 @@
   flex: 0 0 auto;
 }
 
+.settings-open-app-status {
+  font-size: 11px;
+  color: var(--status-error);
+  padding: 2px 6px;
+  border-radius: 999px;
+  border: 1px solid color-mix(in srgb, var(--status-error) 40%, transparent);
+  background: color-mix(in srgb, var(--status-error) 12%, transparent);
+}
+
+.settings-open-app-input[data-invalid] {
+  border-color: color-mix(in srgb, var(--status-error) 60%, var(--border-muted));
+  box-shadow: 0 0 0 2px color-mix(in srgb, var(--status-error) 25%, transparent);
+}
+
 .settings-open-app-default {
   display: inline-flex;
   align-items: center;