fix(baoyu-md, baoyu-post-to-x): decode URL-encoded image paths

Obsidian creates markdown image links with URL-encoded filenames
(e.g. `Pasted%20image%2020260524.png`) but the actual file has spaces.
Add `decodeURIComponent()` before path resolution in both baoyu-md's
shared `resolveImagePath()` and baoyu-post-to-x's independent version.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

packages/baoyu-md/src/images.test.ts

@@ -45,6 +45,20 @@ test("image extension and local fallback resolution handle common path variants"
   assert.equal(resolved, path.join(baseDir, "figure.webp"));
 });
 
+test("resolveImagePath decodes URL-encoded filenames with spaces", async (t) => {
+  const root = await makeTempDir("baoyu-md-urlencoded-");
+  t.after(() => fs.rm(root, { recursive: true, force: true }));
+
+  const baseDir = path.join(root, "article");
+  const tempDir = path.join(root, "tmp");
+  await fs.mkdir(baseDir, { recursive: true });
+  await fs.mkdir(tempDir, { recursive: true });
+  await fs.writeFile(path.join(baseDir, "Pasted image 20260524.png"), "png");
+
+  const resolved = await resolveImagePath("Pasted%20image%2020260524.png", baseDir, tempDir, "test");
+  assert.equal(resolved, path.join(baseDir, "Pasted image 20260524.png"));
+});
+
 test("resolveContentImages resolves image placeholders against the content directory", async (t) => {
   const root = await makeTempDir("baoyu-md-content-images-");
   t.after(() => fs.rm(root, { recursive: true, force: true }));

packages/baoyu-md/src/images.ts

@@ -103,9 +103,10 @@ export async function resolveImagePath(
     return localPath;
   }
 
-  const resolved = path.isAbsolute(imagePath)
-    ? imagePath
-    : path.resolve(baseDir, imagePath);
+  const decoded = decodeURIComponent(imagePath);
+  const resolved = path.isAbsolute(decoded)
+    ? decoded
+    : path.resolve(baseDir, decoded);
   return resolveLocalWithFallback(resolved, logLabel);
 }