fix(calls): the call-failed screen gets a Try again button (#301)

"The call failed to load… try again" only offered Back, so the user had
to back out and press Join again. Try again starts a fresh embed for
the same room with the same mic/camera/sound (which disposes the hung
one); Back stays as the secondary action.

Fixes #301

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_017PCb59uY3UKqDqt7B6hzd5

src/app/components/AccountDataEditor.tsx

@@ -297,7 +297,7 @@ export function AccountDataEditor({
             </Chip>
           </Box>
           <Box shrink="No">
-            <IconButton type="button" onClick={requestClose} variant="Surface" aria-label="Close">
+            <IconButton onClick={requestClose} variant="Surface" aria-label="Close">
               <Icon src={Icons.Cross} />
             </IconButton>
           </Box>

src/app/components/DeviceVerificationSetup.tsx

@@ -315,7 +315,7 @@ export const DeviceVerificationSetup = forwardRef<HTMLDivElement, DeviceVerifica
               Setup Device Verification
             </Text>
           </Box>
-          <IconButton type="button" size="300" radii="300" onClick={onCancel} aria-label="Cancel">
+          <IconButton size="300" radii="300" onClick={onCancel} aria-label="Cancel">
             <Icon src={Icons.Cross} />
           </IconButton>
         </Header>
@@ -361,7 +361,7 @@ export const DeviceVerificationReset = forwardRef<HTMLDivElement, DeviceVerifica
               Reset Device Verification
             </Text>
           </Box>
-          <IconButton type="button" size="300" radii="300" onClick={onCancel} aria-label="Cancel">
+          <IconButton size="300" radii="300" onClick={onCancel} aria-label="Cancel">
             <Icon src={Icons.Cross} />
           </IconButton>
         </Header>

src/app/features/call/CallView.tsx

@@ -6,12 +6,13 @@ import {
   useCallJoined,
   useCallEmbedPlacementSync,
   useCallLoadError,
+  useCallStart,
 } from '../../hooks/useCallEmbed';
 import { callEmbedAtom } from '../../state/callEmbed';
 import { ContainerColor } from '../../styles/ContainerColor.css';
 import { PrescreenControls } from './PrescreenControls';
 import { usePowerLevelsContext } from '../../hooks/usePowerLevels';
-import { useRoom } from '../../hooks/useRoom';
+import { useIsDirectRoom, useRoom } from '../../hooks/useRoom';
 import { useRoomCreators } from '../../hooks/useRoomCreators';
 import { useRoomPermissions } from '../../hooks/useRoomPermissions';
 import { useMatrixClient } from '../../hooks/useMatrixClient';
@@ -160,6 +161,16 @@ function CallLoadErrorMessage() {
   // prescreen, where they can choose to join again.
   const dismiss = () => setCallEmbed(undefined);
 
+  // [Gitea #301] Try again: start a fresh embed for the same room with the
+  // same mic/camera/sound choices (starting one disposes the hung one).
+  const callEmbed = useCallEmbed();
+  const startCall = useCallStart(useIsDirectRoom());
+  const retry = () => {
+    if (!callEmbed) return;
+    const { room, control } = callEmbed;
+    startCall(room, { microphone: control.microphone, video: control.video, sound: control.sound });
+  };
+
   return (
     <Box
       className={css.CallViewContent}
@@ -173,6 +184,9 @@ function CallLoadErrorMessage() {
         The call failed to load. Check your connection and try again.
       </Text>
       <Box gap="200" alignItems="Center">
+        <Button variant="Primary" size="300" radii="400" onClick={retry} disabled={!callEmbed}>
+          <Text size="B400">Try again</Text>
+        </Button>
         <Button variant="Secondary" fill="Soft" size="300" radii="400" onClick={dismiss}>
           <Text size="B400">Back</Text>
         </Button>

src/app/features/common-settings/developer-tools/StateEventEditor.tsx

@@ -275,7 +275,7 @@ export function StateEventEditor({ type, stateKey, requestClose }: StateEventEdi
             </Chip>
           </Box>
           <Box shrink="No">
-            <IconButton type="button" onClick={requestClose} variant="Surface" aria-label="Close">
+            <IconButton onClick={requestClose} variant="Surface" aria-label="Close">
               <Icon src={Icons.Cross} />
             </IconButton>
           </Box>

src/app/features/room/PollCreator.tsx

@@ -143,7 +143,7 @@ export function PollCreator({ roomId, threadRootId, onClose }: PollCreatorProps)
                   Create Poll
                 </Text>
               </Box>
-              <IconButton type="button" size="300" radii="300" onClick={onClose} aria-label="Close">
+              <IconButton size="300" radii="300" onClick={onClose} aria-label="Close">
                 <Icon src={Icons.Cross} />
               </IconButton>
             </Header>

src/app/features/room/ReportRoomModal.tsx

@@ -118,7 +118,7 @@ export function ReportRoomModal({ roomId, onClose }: ReportRoomModalProps) {
                   Report Room
                 </Text>
               </Box>
-              <IconButton type="button" size="300" onClick={onClose} radii="300" aria-label="Close">
+              <IconButton size="300" onClick={onClose} radii="300" aria-label="Close">
                 <Icon src={Icons.Cross} />
               </IconButton>
             </Header>

src/app/features/room/ReportUserModal.tsx

@@ -124,7 +124,7 @@ export function ReportUserModal({ userId, onClose }: ReportUserModalProps) {
                   Report User
                 </Text>
               </Box>
-              <IconButton type="button" size="300" onClick={onClose} radii="300" aria-label="Close">
+              <IconButton size="300" onClick={onClose} radii="300" aria-label="Close">
                 <Icon src={Icons.Cross} />
               </IconButton>
             </Header>

src/app/features/room/ScheduleMessageModal.tsx

@@ -202,7 +202,7 @@ export function ScheduleMessageModal({
                   {title}
                 </Text>
               </Box>
-              <IconButton type="button" size="300" radii="300" onClick={onClose} aria-label="Close">
+              <IconButton size="300" radii="300" onClick={onClose} aria-label="Close">
                 <Icon src={Icons.Cross} />
               </IconButton>
             </Header>

src/app/features/room/message/Message.tsx

@@ -725,13 +725,7 @@ export const MessageDeleteItem = as<
                     Delete Message
                   </Text>
                 </Box>
-                <IconButton
-                  type="button"
-                  size="300"
-                  onClick={handleClose}
-                  radii="300"
-                  aria-label="Close"
-                >
+                <IconButton size="300" onClick={handleClose} radii="300" aria-label="Close">
                   <Icon src={Icons.Cross} />
                 </IconButton>
               </Header>
@@ -871,13 +865,7 @@ export const MessageReportItem = as<
                     Report Message
                   </Text>
                 </Box>
-                <IconButton
-                  type="button"
-                  size="300"
-                  onClick={handleClose}
-                  radii="300"
-                  aria-label="Close"
-                >
+                <IconButton size="300" onClick={handleClose} radii="300" aria-label="Close">
                   <Icon src={Icons.Cross} />
                 </IconButton>
               </Header>