fix(share): onShare 加 isActive 守卫 + PixelMap 延到 setData 完成后释放（final review C1/M1）

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

feature_capabilities/src/main/ets/providers/ShareProvider.ets

@@ -73,7 +73,8 @@ export class ShareProvider implements CapabilityProvider {
   // —— 入站 ——
 
   private onShare(data: string): void {
-    if (this.ctx === undefined) {
+    const bridge = this.bridge;
+    if (this.ctx === undefined || bridge === undefined || !bridge.isActive()) {
       return;
     }
     let bean: SharetypeBean;
@@ -294,15 +295,18 @@ export class ShareProvider implements CapabilityProvider {
   private writeClipboardImage(filePath: string): void {
     const source: image.ImageSource = image.createImageSource(filePath);
     source.createPixelMap().then((pm: image.PixelMap) => {
+      let data: pasteboard.PasteData;
       try {
-        const data: pasteboard.PasteData = pasteboard.createData(pasteboard.MIMETYPE_PIXELMAP, pm);
-        pasteboard.getSystemPasteboard().setData(data)
-          .catch((e: BusinessError) => this.log.w(`clipboard image failed: ${e.code} ${e.message}`));
+        data = pasteboard.createData(pasteboard.MIMETYPE_PIXELMAP, pm);
       } catch (e) {
         this.log.w(`clipboard image init failed: ${(e as Error).message}`);
-      } finally {
         pm.release();
+        return;
       }
+      // pm 须存活到 setData 完成（createData 可能持引用），故在 setData settle 后再 release。
+      pasteboard.getSystemPasteboard().setData(data)
+        .catch((e: BusinessError) => this.log.w(`clipboard image failed: ${e.code} ${e.message}`))
+        .finally(() => pm.release());
     }).catch((e: BusinessError) => {
       this.log.w(`createPixelMap failed: ${e.code} ${e.message}`);
     }).finally(() => {