0.2.1

Fix community plugin review findings

- Bump minAppVersion to 1.8.7 (fileManager.trashFile, Vault.copy)
- Narrow TFile casts to instanceof checks; pasteInto rejects folder
copies
- Canvas preview: colors via presentation attributes + CSS rules instead
  of inline style assignment; currentColor fallback for uncolored nodes
- Use activeDocument/activeWindow for popout window compatibility
- Replace builtin-modules dep with node:module builtinModules
- Type-safe filter stringification in base preview
- Sentence-case UI strings
- Add eslint + eslint-plugin-obsidianmd config and npm run lint