added image upload feature

src/App.css

@@ -754,6 +754,114 @@
     text-transform: uppercase;
 }
 
+.settings-edit-btn {
+    display: flex;
+    align-items: center;
+    justify-content: center;
+    width: 36px;
+    height: 36px;
+    border-radius: 10px;
+    border: none;
+    background: #f0fdf4;
+    color: #22c55e;
+    cursor: pointer;
+    flex-shrink: 0;
+    transition: background 0.15s;
+}
+
+.settings-edit-btn:hover {
+    background: #dcfce7;
+}
+
+.edit-modal-title {
+    font-size: 1.2rem;
+    font-weight: 700;
+    color: #1a1a1a;
+    margin: 0 0 1rem;
+    text-align: center;
+    font-family: "Sniglet", system-ui;
+}
+
+.edit-modal-avatar {
+    position: relative;
+    width: 80px;
+    height: 80px;
+    margin: 0 auto 0.5rem;
+    cursor: pointer;
+    border-radius: 50%;
+    overflow: hidden;
+}
+
+.edit-modal-avatar-img {
+    width: 100%;
+    height: 100%;
+    object-fit: cover;
+    border-radius: 50%;
+}
+
+.edit-modal-avatar-placeholder {
+    width: 100%;
+    height: 100%;
+    border-radius: 50%;
+    background: linear-gradient(135deg, #86efac 0%, #22c55e 100%);
+    display: flex;
+    align-items: center;
+    justify-content: center;
+    font-size: 2rem;
+    font-weight: 700;
+    color: #fff;
+    font-family: "Sniglet", system-ui;
+}
+
+.edit-modal-avatar-overlay {
+    position: absolute;
+    inset: 0;
+    background: rgba(0, 0, 0, 0.35);
+    display: flex;
+    align-items: center;
+    justify-content: center;
+    color: #fff;
+    border-radius: 50%;
+}
+
+.edit-modal-remove-photo {
+    display: block;
+    margin: 0 auto 0.5rem;
+    background: none;
+    border: none;
+    color: #ef4444;
+    font-size: 0.75rem;
+    cursor: pointer;
+    padding: 0.25rem 0.5rem;
+}
+
+.edit-modal-remove-photo:hover {
+    text-decoration: underline;
+}
+
+.edit-modal-save {
+    flex: 1;
+    padding: 0.65rem;
+    border: none;
+    border-radius: 12px;
+    font-size: 0.9rem;
+    font-weight: 600;
+    font-family: inherit;
+    cursor: pointer;
+    background: #22c55e;
+    color: #fff;
+    transition: background 0.15s;
+}
+
+.edit-modal-save:hover:not(:disabled) {
+    background: #16a34a;
+}
+
+.edit-modal-save:disabled {
+    opacity: 0.5;
+    cursor: not-allowed;
+}
+
 .settings-section {
     margin-bottom: 1rem;
 }
@@ -1715,6 +1823,19 @@
     color: #fff;
 }
 
+[data-theme="dark"] .settings-edit-btn {
+    background: rgba(34, 197, 94, 0.15);
+    color: #4ade80;
+}
+
+[data-theme="dark"] .settings-edit-btn:hover {
+    background: rgba(34, 197, 94, 0.25);
+}
+
+[data-theme="dark"] .edit-modal-title {
+    color: #e8f5e8;
+}
+
 /* -- Settings divider -- */
 [data-theme="dark"] .settings-divider {
     background: #2a2a2a;