feat: add comprehensive profile editing modal for admins

Replaced the simple prompt-based profile editing with a full-featured modal
that allows admins to edit all profile fields:

Profile Information:
- Display Name
- Profile URL Slug (with uniqueness validation)
- Bio (with character counter)

Social Links:
- Website
- Discord Server
- GitHub username
- Bluesky handle
- LinkedIn username
- Twitch username
- YouTube handle/channel

All fields include:
- Proper validation patterns
- Help text explaining format requirements
- Styled form sections for organization
- Loading states during submission
- Success/error toast notifications

The modal opens when clicking "Edit Profile" on a profile report, loads
the current profile data, and saves all changes via the admin API endpoint.

apps/frontend/src/app/components/admin-reports/admin-reports.component.ts

@@ -598,6 +598,201 @@ import { ProfileReportWithUsers, CommentReportWithDetails, ReportStatus, ReportR
           </div>
         </div>
       }
+
+      <!-- Profile Edit Modal -->
+      @if (editingProfile()) {
+        <div
+          class="modal-overlay"
+          (click)="closeProfileEditModal()"
+          (keydown.escape)="closeProfileEditModal()"
+          role="dialog"
+          aria-modal="true"
+          aria-labelledby="edit-profile-modal-title"
+        >
+          <div
+            class="modal-content"
+            (click)="$event.stopPropagation()"
+            (keydown)="$event.stopPropagation()"
+            role="document"
+            tabindex="-1"
+          >
+            <div class="modal-header">
+              <h2 id="edit-profile-modal-title">Edit Profile: {{ editingProfile()!.username }}</h2>
+              <button
+                type="button"
+                class="modal-close"
+                (click)="closeProfileEditModal()"
+                aria-label="Close modal"
+              >
+                ×
+              </button>
+            </div>
+
+            <div class="modal-body">
+              <form (ngSubmit)="saveProfileEdit()" class="profile-edit-form">
+                <div class="form-section">
+                  <h3>Profile Information</h3>
+
+                  <div class="form-group">
+                    <label for="displayName">Display Name</label>
+                    <input
+                      type="text"
+                      id="displayName"
+                      name="displayName"
+                      [(ngModel)]="profileEditForm.displayName"
+                      class="form-control"
+                      placeholder="Display name"
+                      maxlength="50"
+                    />
+                  </div>
+
+                  <div class="form-group">
+                    <label for="slug">Profile URL Slug</label>
+                    <input
+                      type="text"
+                      id="slug"
+                      name="slug"
+                      [(ngModel)]="profileEditForm.slug"
+                      class="form-control"
+                      placeholder="url-slug"
+                      maxlength="30"
+                      pattern="[a-z0-9-]+"
+                    />
+                    <small class="form-help">Only lowercase letters, numbers, and hyphens</small>
+                  </div>
+
+                  <div class="form-group">
+                    <label for="bio">Bio</label>
+                    <textarea
+                      id="bio"
+                      name="bio"
+                      [(ngModel)]="profileEditForm.bio"
+                      class="form-control"
+                      rows="4"
+                      maxlength="500"
+                      placeholder="User bio..."
+                    ></textarea>
+                    <small class="form-help">{{ (profileEditForm.bio.length || 0) }} / 500 characters</small>
+                  </div>
+                </div>
+
+                <div class="form-section">
+                  <h3>Social Links</h3>
+
+                  <div class="form-group">
+                    <label for="website">Website</label>
+                    <input
+                      type="text"
+                      id="website"
+                      name="website"
+                      [(ngModel)]="profileEditForm.website"
+                      class="form-control"
+                      placeholder="https://example.com"
+                      pattern="https?://.+"
+                    />
+                  </div>
+
+                  <div class="form-group">
+                    <label for="discordServer">Discord Server</label>
+                    <input
+                      type="text"
+                      id="discordServer"
+                      name="discordServer"
+                      [(ngModel)]="profileEditForm.discordServer"
+                      class="form-control"
+                      placeholder="https://discord.gg/..."
+                      pattern="https://discord\\.gg/[a-zA-Z0-9]+"
+                    />
+                  </div>
+
+                  <div class="form-group">
+                    <label for="github">GitHub</label>
+                    <input
+                      type="text"
+                      id="github"
+                      name="github"
+                      [(ngModel)]="profileEditForm.github"
+                      class="form-control"
+                      placeholder="username"
+                      pattern="[a-zA-Z0-9]([a-zA-Z0-9-]{0,37}[a-zA-Z0-9])?"
+                    />
+                  </div>
+
+                  <div class="form-group">
+                    <label for="bluesky">Bluesky</label>
+                    <input
+                      type="text"
+                      id="bluesky"
+                      name="bluesky"
+                      [(ngModel)]="profileEditForm.bluesky"
+                      class="form-control"
+                      placeholder="username.bsky.social"
+                      pattern="[a-zA-Z0-9.-]+\.[a-zA-Z]{2,}"
+                    />
+                  </div>
+
+                  <div class="form-group">
+                    <label for="linkedin">LinkedIn</label>
+                    <input
+                      type="text"
+                      id="linkedin"
+                      name="linkedin"
+                      [(ngModel)]="profileEditForm.linkedin"
+                      class="form-control"
+                      placeholder="username"
+                      pattern="[a-zA-Z0-9-]{3,100}"
+                    />
+                  </div>
+
+                  <div class="form-group">
+                    <label for="twitch">Twitch</label>
+                    <input
+                      type="text"
+                      id="twitch"
+                      name="twitch"
+                      [(ngModel)]="profileEditForm.twitch"
+                      class="form-control"
+                      placeholder="username"
+                      pattern="[a-zA-Z0-9_]{4,25}"
+                    />
+                  </div>
+
+                  <div class="form-group">
+                    <label for="youtube">YouTube</label>
+                    <input
+                      type="text"
+                      id="youtube"
+                      name="youtube"
+                      [(ngModel)]="profileEditForm.youtube"
+                      class="form-control"
+                      placeholder="@username or channel-id"
+                      pattern="(@[a-zA-Z0-9_.-]{3,30}|UC[a-zA-Z0-9_-]{22})"
+                    />
+                  </div>
+                </div>
+
+                <div class="modal-actions">
+                  <button
+                    type="button"
+                    class="btn btn-secondary"
+                    (click)="closeProfileEditModal()"
+                    [disabled]="submitting()"
+                  >
+                    Cancel
+                  </button>
+                  <button
+                    type="submit"
+                    class="btn btn-primary"
+                    [disabled]="submitting()"
+                  >
+                    {{ submitting() ? 'Saving...' : 'Save Changes' }}
+                  </button>
+                </div>
+              </form>
+            </div>
+          </div>
+        </div>
+      }
     </div>
   `,
   styles: [`
@@ -1137,6 +1332,29 @@ import { ProfileReportWithUsers, CommentReportWithDetails, ReportStatus, ReportR
       font-size: 0.95rem;
     }
 
+    .form-help {
+      font-size: 0.85rem;
+      color: var(--witch-mauve);
+      font-style: italic;
+    }
+
+    .form-section {
+      margin-bottom: 1.5rem;
+      padding-bottom: 1.5rem;
+      border-bottom: 1px solid var(--witch-lavender);
+    }
+
+    .form-section:last-of-type {
+      border-bottom: none;
+      padding-bottom: 0;
+    }
+
+    .form-section h3 {
+      color: var(--witch-purple);
+      margin-bottom: 1rem;
+      font-size: 1.1rem;
+    }
+
     .form-control {
       padding: 0.75rem;
       border: 2px solid var(--witch-lavender);
@@ -1256,6 +1474,7 @@ export class AdminReportsComponent implements OnInit {
 
   reviewingProfileReport = signal<ProfileReportWithUsers | null>(null);
   reviewingCommentReport = signal<CommentReportWithDetails | null>(null);
+  editingProfile = signal<{ userId: string; username: string; profile: any } | null>(null);
   submitting = signal(false);
 
   reviewForm = {
@@ -1263,6 +1482,20 @@ export class AdminReportsComponent implements OnInit {
     reviewNotes: ''
   };
 
+  profileEditForm = {
+    displayName: '',
+    slug: '',
+    bio: '',
+    profilePublic: true,
+    website: '',
+    discordServer: '',
+    bluesky: '',
+    github: '',
+    linkedin: '',
+    twitch: '',
+    youtube: ''
+  };
+
   filteredProfileReports = computed(() => {
     const filter = this.activeFilter();
     if (filter === 'all') {
@@ -1534,20 +1767,23 @@ export class AdminReportsComponent implements OnInit {
     // Load the full profile first to get current values
     this.userService.getProfile(userId).subscribe({
       next: (profile) => {
-        const newBio = prompt(`Edit bio for ${username}:`, profile.bio || '');
+        // Populate the edit form with current values
+        this.profileEditForm = {
+          displayName: profile.displayName || '',
+          slug: profile.slug || '',
+          bio: profile.bio || '',
+          profilePublic: true, // We'll get this from the full user object if needed
+          website: profile.website || '',
+          discordServer: profile.discordServer || '',
+          bluesky: profile.bluesky || '',
+          github: profile.github || '',
+          linkedin: profile.linkedin || '',
+          twitch: profile.twitch || '',
+          youtube: profile.youtube || ''
+        };
 
-        if (newBio !== null) {
+        // Open the edit modal
-          this.userService.adminUpdateUser(userId, { bio: newBio }).subscribe({
+        this.editingProfile.set({ userId, username, profile });
-            next: () => {
-              this.toastService.success('Profile updated successfully');
-              this.loadReports();
-              this.closeProfileReviewModal();
-            },
-            error: (err) => {
-              this.toastService.error(err.message ?? 'Failed to update profile');
-            }
-          });
-        }
       },
       error: (err) => {
         this.toastService.error(err.message ?? 'Failed to load profile');
@@ -1555,6 +1791,43 @@ export class AdminReportsComponent implements OnInit {
     });
   }
 
+  closeProfileEditModal(): void {
+    this.editingProfile.set(null);
+    this.profileEditForm = {
+      displayName: '',
+      slug: '',
+      bio: '',
+      profilePublic: true,
+      website: '',
+      discordServer: '',
+      bluesky: '',
+      github: '',
+      linkedin: '',
+      twitch: '',
+      youtube: ''
+    };
+  }
+
+  saveProfileEdit(): void {
+    const editing = this.editingProfile();
+    if (!editing) return;
+
+    this.submitting.set(true);
+    this.userService.adminUpdateUser(editing.userId, this.profileEditForm).subscribe({
+      next: () => {
+        this.toastService.success('Profile updated successfully');
+        this.loadReports();
+        this.closeProfileEditModal();
+        this.closeProfileReviewModal();
+        this.submitting.set(false);
+      },
+      error: (err) => {
+        this.toastService.error(err.message ?? 'Failed to update profile');
+        this.submitting.set(false);
+      }
+    });
+  }
+
   makeProfilePrivate(report: ProfileReportWithUsers): void {
     const userId = report.reportedUser.id;
     const username = report.reportedUser.username;