feat: add voice transcription feedback workflow

pages/feedback/index.wxss

@@ -42,6 +42,91 @@
   line-height: 1.6;
 }
 
+.voice-input-row {
+  display: flex;
+  align-items: center;
+  gap: 20rpx;
+  margin-top: 18rpx;
+  padding-top: 18rpx;
+  border-top: 2rpx solid #e7eef6;
+}
+
+.voice-button {
+  display: flex;
+  align-items: center;
+  justify-content: center;
+  gap: 12rpx;
+  width: 220rpx;
+  height: 72rpx;
+  margin: 0;
+  padding: 0 20rpx;
+  border: 2rpx solid #b8cbe1;
+  border-radius: 12rpx;
+  background: #ffffff;
+  color: #2b67e8;
+  font-size: 26rpx;
+  font-weight: 600;
+  line-height: 1;
+}
+
+.voice-button::after {
+  border: 0;
+}
+
+.voice-button[disabled] {
+  background: #f4f7fa;
+  color: #99a5b3;
+  opacity: 1;
+}
+
+.voice-button-recording,
+.voice-button-recording[disabled] {
+  border-color: #e46b65;
+  background: #fff4f3;
+  color: #c83f39;
+}
+
+.voice-button-icon {
+  font-size: 20rpx;
+  line-height: 1;
+}
+
+.voice-state {
+  display: flex;
+  flex: 1;
+  align-items: center;
+  justify-content: space-between;
+  min-width: 0;
+  color: #65758a;
+  font-size: 24rpx;
+}
+
+.voice-status {
+  flex: 1;
+  overflow: hidden;
+  text-overflow: ellipsis;
+  white-space: nowrap;
+}
+
+.voice-state-actionable {
+  min-height: 64rpx;
+}
+
+.voice-state-arrow {
+  flex: none;
+  margin-left: 10rpx;
+  color: #7f8da0;
+  font-size: 38rpx;
+  line-height: 1;
+}
+
+.recording-time {
+  flex: none;
+  margin-left: 12rpx;
+  color: #c83f39;
+  font-variant-numeric: tabular-nums;
+}
+
 .save-feedback {
   margin-top: 24rpx;
 }