refactor(frontend): migrate Bash, Log, and Deploy feedback dialogs (#952)

- modal.tsx Modal now accepts a showClose prop that passes through to
  DialogContent, so callers that render their own close affordance
  (DeployFeedbackModal) can suppress the Radix close button
- DeployFeedbackModal -> Modal with showClose=false. Custom header,
  scroll body, embedded terminal, and footer stay in place; Modal
  provides the consistent overlay/blur chrome. DialogTitle is still
  imported from the dialog primitive purely as an sr-only
  accessibility wrapper, since this status panel doesn't fit the §10
  ModalHeader chrome
- BashExecModal -> Modal + ModalHeader. Kicker BASH · {CONTAINER}.
  The xterm container sits in the body
- LogViewer -> Modal + ModalHeader. Kicker LOGS · {CONTAINER}. The
  scroll region sits in the body

frontend/src/components/BashExecModal.tsx

@@ -1,5 +1,5 @@
 import { useEffect, useRef, useState, useCallback } from 'react';
-import { Dialog, DialogContent, DialogHeader, DialogTitle, DialogDescription } from './ui/dialog';
+import { Modal, ModalHeader } from './ui/modal';
 import { Terminal as TerminalIcon } from 'lucide-react';
 import { loadXtermModules, type Terminal, type FitAddon, type XtermModules } from '@/lib/xtermLoader';
 import { buildXtermMinimalTheme } from '@/lib/terminalTheme';
@@ -214,31 +214,28 @@ export default function BashExecModal({ isOpen, onClose, containerId, containerN
   };
 
   return (
-    <Dialog open={isOpen} onOpenChange={handleClose}>
-      <DialogContent className="max-w-4xl h-[600px] flex flex-col">
-        <DialogHeader>
-          <DialogTitle className="flex items-center gap-2">
-            <TerminalIcon className="w-5 h-5" />
-            Bash: {containerName}
+    <Modal open={isOpen} onOpenChange={handleClose} className="max-w-4xl h-[600px] flex flex-col">
+      <ModalHeader
+        kicker={`BASH · ${containerName.toUpperCase()}`}
+        title={
+          <span className="flex items-center gap-2">
+            <TerminalIcon className="w-5 h-5" strokeWidth={1.5} />
+            Bash session
             {isConnected && (
               <span className="ml-2 text-xs bg-success/20 text-success px-2 py-0.5 rounded-full">
                 Connected
               </span>
             )}
-          </DialogTitle>
-          <DialogDescription className="sr-only">
-            Interactive bash terminal session for {containerName}
-          </DialogDescription>
-        </DialogHeader>
-        {/* Styling wrapper - padding and rounded corners go here */}
-        <div className="flex-1 rounded-lg bg-black p-1 min-h-0" style={{ overflow: 'hidden' }}>
-          {/* Clean xterm container - NO padding, NO overflow-hidden, explicit dimensions */}
-          <div
-            ref={terminalRef}
-            style={{ width: '100%', height: '100%' }}
-          />
-        </div>
-      </DialogContent>
-    </Dialog>
+          </span>
+        }
+        description={`Interactive bash terminal session for ${containerName}`}
+      />
+      <div className="flex-1 rounded-lg bg-black p-1 min-h-0 mx-6 mb-6" style={{ overflow: 'hidden' }}>
+        <div
+          ref={terminalRef}
+          style={{ width: '100%', height: '100%' }}
+        />
+      </div>
+    </Modal>
   );
 }

frontend/src/components/DeployFeedbackModal.tsx

@@ -7,11 +7,8 @@ import {
   Minimize2,
   Terminal as TerminalIcon,
 } from 'lucide-react';
-import {
-  Dialog,
-  DialogContent,
-  DialogTitle,
-} from '@/components/ui/dialog';
+import { Modal } from '@/components/ui/modal';
+import { DialogTitle } from '@/components/ui/dialog';
 import { Button } from '@/components/ui/button';
 import { StructuredLogRow } from '@/components/log-rendering/StructuredLogRow';
 import TerminalComponent from '@/components/Terminal';
@@ -156,11 +153,15 @@ export function DeployFeedbackModal({ isMinimized, onMinimize }: DeployFeedbackM
   const verbLabel = VERB_LABELS[action];
 
   return (
-    <Dialog open={isDialogOpen} onOpenChange={handleOpenChange}>
-      <DialogContent
-        showClose={false}
+    <Modal
+      open={isDialogOpen}
+      onOpenChange={handleOpenChange}
+      showClose={false}
+      className="max-w-[640px] max-h-[70vh] flex flex-col"
+    >
+      <div
         data-testid="deploy-feedback-modal"
-        className="max-w-[640px] p-0 gap-0 max-h-[70vh] flex flex-col"
+        className="flex flex-col flex-1 min-h-0"
         onMouseEnter={handleMouseEnter}
         onMouseLeave={handleMouseLeave}
       >
@@ -273,8 +274,8 @@ export function DeployFeedbackModal({ isMinimized, onMinimize }: DeployFeedbackM
             </Button>
           </div>
         </div>
-      </DialogContent>
-    </Dialog>
+      </div>
+    </Modal>
   );
 }
 

frontend/src/components/LogViewer.tsx

@@ -1,5 +1,5 @@
 import { useEffect, useState, useRef } from 'react';
-import { Dialog, DialogContent, DialogHeader, DialogTitle } from "@/components/ui/dialog";
+import { Modal, ModalHeader } from "@/components/ui/modal";
 import { Loader2, Terminal } from "lucide-react";
 
 interface LogViewerProps {
@@ -56,30 +56,37 @@ export function LogViewer({ containerId, containerName, isOpen, onClose }: LogVi
     }, [isOpen, containerId]);
 
     return (
-        <Dialog open={isOpen} onOpenChange={(open) => !open && onClose()}>
-            <DialogContent className="max-w-4xl h-[80vh] flex flex-col bg-background border-border">
-                <DialogHeader className="flex flex-row items-center gap-2 pb-2 border-b">
-                    <Terminal className="w-5 h-5" />
-                    <DialogTitle className="flex-1 text-left font-mono text-sm">
-                        {containerName} {isConnected ? <span className="text-success text-xs ml-2">(connected)</span> : <Loader2 className="inline w-3 h-3 ml-2 animate-spin" />}
-                    </DialogTitle>
-                </DialogHeader>
+        <Modal open={isOpen} onOpenChange={(open) => !open && onClose()} className="max-w-4xl h-[80vh] flex flex-col">
+            <ModalHeader
+                kicker={`LOGS · ${containerName.toUpperCase()}`}
+                title={
+                    <span className="flex items-center gap-2">
+                        <Terminal className="w-5 h-5" strokeWidth={1.5} />
+                        Container logs
+                        {isConnected ? (
+                            <span className="text-success text-xs ml-2">(connected)</span>
+                        ) : (
+                            <Loader2 className="inline w-4 h-4 ml-2 animate-spin" />
+                        )}
+                    </span>
+                }
+                description={`Live log stream for ${containerName}`}
+            />
 
-                <div
-                    ref={scrollRef}
-                    className="flex-1 w-full bg-[var(--terminal-bg)] text-success p-4 rounded-md overflow-y-auto font-mono text-xs mt-2"
-                >
-                    {logs.length === 0 && !isConnected ? (
-                        <div className="text-muted-foreground">Connecting to container stream...</div>
-                    ) : (
-                        logs.map((log, i) => (
-                            <div key={i} className="break-all whitespace-pre-wrap leading-tight mb-1">
-                                {log}
-                            </div>
-                        ))
-                    )}
-                </div>
-            </DialogContent>
-        </Dialog>
+            <div
+                ref={scrollRef}
+                className="flex-1 w-full bg-[var(--terminal-bg)] text-success p-4 overflow-y-auto font-mono text-xs mx-6 mb-6 rounded-md"
+            >
+                {logs.length === 0 && !isConnected ? (
+                    <div className="text-muted-foreground">Connecting to container stream...</div>
+                ) : (
+                    logs.map((log, i) => (
+                        <div key={i} className="break-all whitespace-pre-wrap leading-tight mb-1">
+                            {log}
+                        </div>
+                    ))
+                )}
+            </div>
+        </Modal>
     );
 }

frontend/src/components/ui/modal.tsx

@@ -34,12 +34,15 @@ interface ModalProps {
   children: React.ReactNode;
   size?: ModalSize;
   className?: string;
+  /** Pass through to DialogContent — set to false when the modal renders its own close affordance. */
+  showClose?: boolean;
 }
 
-export function Modal({ open, onOpenChange, children, size = 'md', className }: ModalProps) {
+export function Modal({ open, onOpenChange, children, size = 'md', className, showClose }: ModalProps) {
   return (
     <Dialog open={open} onOpenChange={onOpenChange}>
       <DialogContent
+        showClose={showClose}
         className={cn(
           'p-0 gap-0 overflow-hidden grid-cols-1',
           SIZE_CLASS[size],