feat(registry): Gitea npm registry publish config + Changesets

- .npmrc: @mosaic scope points to Gitea registry
- Changesets initialized with initial minor release
- publishConfig added to all packages
- Woodpecker publish step on main branch

.changeset/initial-release.md

@@ -0,0 +1,7 @@
+---
+"@mosaic/types": minor
+"@mosaic/queue": minor
+"@mosaic/openclaw-context": minor
+---
+
+Initial release of the @mosaic/* monorepo packages.