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>
Move test files from tests/ directory to colocate with source code,
convert from .mjs to .ts using tsx runner, add workspaces and npm
cache to CI workflow.