feat: bulk tag editing, bulk export, and move recipes between collections

Extends the existing bulk-select infra: recipes list gets tag add/remove
and multi-recipe Markdown export; collection pages get a select mode to
move recipes to another collection or remove them from the current one.

Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>

package.json

@@ -1,6 +1,6 @@
 {
   "name": "epicure",
-  "version": "0.9.6",
+  "version": "0.10.0",
   "private": true,
   "scripts": {
     "dev": "pnpm --filter web dev",