feat(dialogs): polished success + error modals replace bare snackbar/dialog

Add reusable SuccessDialogComponent (green check, gradient hero, pop-in
animation) and redesign ErrorDialogComponent to match (red exclamation,
clear title, centered OK). Wire edit-user submit flow to the new dialogs:
success defers navigation until the user confirms, errors surface the
backend message in the styled modal instead of a grey snackbar.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

src/app/shared/error-dialog/error-dialog.component.html

@@ -6,17 +6,19 @@
   file, You can obtain one at http://mozilla.org/MPL/2.0/.
 -->
 
-<h1 mat-dialog-title>{{ 'Error Log' | translate }}</h1>
-
-<div mat-dialog-content>
+<mat-dialog-content class="ed-content">
+  <div class="ed-icon">
+    <fa-icon icon="exclamation-circle"></fa-icon>
+  </div>
+  <h2 class="ed-title">We encountered an issue. Please try again.</h2>
   @if (!showAsCode) {
-    <p>{{ displayData }}</p>
+    <p class="ed-message">{{ displayData }}</p>
   }
   @if (showAsCode) {
-    <span [innerHTML]="sanitizedData"></span>
+    <div class="ed-code" [innerHTML]="sanitizedData"></div>
   }
-</div>
+</mat-dialog-content>
 
-<mat-dialog-actions align="left">
-  <button mat-raised-button mat-dialog-close>{{ 'Cancel' | translate }}</button>
+<mat-dialog-actions align="center" class="ed-actions">
+  <button mat-flat-button color="warn" mat-dialog-close>OK</button>
 </mat-dialog-actions>

src/app/shared/error-dialog/error-dialog.component.scss

@@ -5,3 +5,87 @@
  * License, v. 2.0. If a copy of the MPL was not distributed with this
  * file, You can obtain one at http://mozilla.org/MPL/2.0/.
  */
+
+:host {
+  display: block;
+  min-width: 380px;
+  max-width: 480px;
+  font-family: inherit;
+  color: #0f172a;
+}
+
+.ed-content {
+  display: flex !important;
+  flex-direction: column;
+  align-items: center;
+  text-align: center;
+  gap: 14px;
+  padding: 32px 28px 8px !important;
+  background: linear-gradient(180deg, #fef2f2 0%, #fff 70%);
+}
+
+.ed-icon {
+  width: 76px;
+  height: 76px;
+  border-radius: 50%;
+  background: #fee2e2;
+  color: #dc2626;
+  display: inline-flex;
+  align-items: center;
+  justify-content: center;
+  font-size: 38px;
+  box-shadow: 0 0 0 6px rgb(220 38 38 / 10%);
+  animation: ed-pop 0.32s cubic-bezier(0.34, 1.56, 0.64, 1);
+}
+
+@keyframes ed-pop {
+  0% {
+    transform: scale(0.6);
+    opacity: 0;
+  }
+
+  100% {
+    transform: scale(1);
+    opacity: 1;
+  }
+}
+
+.ed-title {
+  margin: 4px 0 0;
+  font-size: 20px;
+  font-weight: 700;
+  color: #0f172a;
+}
+
+.ed-message {
+  margin: 0;
+  color: #475569;
+  font-size: 14px;
+  line-height: 1.55;
+  max-width: 380px;
+  word-break: break-word;
+}
+
+.ed-code {
+  width: 100%;
+  max-height: 320px;
+  overflow: auto;
+  text-align: left;
+  background: #0f172a;
+  color: #e2e8f0;
+  border-radius: 8px;
+  padding: 12px 14px;
+  font-family: 'SF Mono', Menlo, Consolas, monospace;
+  font-size: 12.5px;
+  line-height: 1.5;
+}
+
+.ed-actions {
+  padding: 16px 24px 22px !important;
+  background: #fff;
+  justify-content: center !important;
+
+  button {
+    min-width: 120px;
+  }
+}

src/app/shared/error-dialog/error-dialog.component.ts

@@ -11,13 +11,13 @@ import { Component, OnInit, SecurityContext, inject } from '@angular/core';
 import {
   MatDialogRef,
   MAT_DIALOG_DATA,
-  MatDialogTitle,
   MatDialogContent,
   MatDialogActions,
   MatDialogClose
 } from '@angular/material/dialog';
 import { CdkScrollable } from '@angular/cdk/scrolling';
 import { DomSanitizer, SafeHtml } from '@angular/platform-browser';
+import { FaIconComponent } from '@fortawesome/angular-fontawesome';
 import { STANDALONE_SHARED_IMPORTS } from 'app/standalone-shared.module';
 
 @Component({
@@ -26,11 +26,11 @@ import { STANDALONE_SHARED_IMPORTS } from 'app/standalone-shared.module';
   styleUrls: ['./error-dialog.component.scss'],
   imports: [
     ...STANDALONE_SHARED_IMPORTS,
-    MatDialogTitle,
     CdkScrollable,
     MatDialogContent,
     MatDialogActions,
-    MatDialogClose
+    MatDialogClose,
+    FaIconComponent
   ]
 })
 export class ErrorDialogComponent {