chore(release): mosaic CLI 0.0.45

Roll out H2 readiness semantics (#653): idle healthy agents report as
available, not stuck/idle; stuck reserved for genuine blocks.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

packages/mosaic/package.json

@@ -1,6 +1,6 @@
 {
   "name": "@mosaicstack/mosaic",
-  "version": "0.0.44",
+  "version": "0.0.45",
   "repository": {
     "type": "git",
     "url": "https://git.mosaicstack.dev/mosaicstack/stack.git",