release: v0.6.0

Bump version to 0.6.0 and cut the changelog — phase 7 automation
(scheduled jobs, realtime SSE, automation UI, jobs CLI/MCP), security
hardening, and the new CI image pipeline + install.sh.

Authored By: TDvorak <[email protected]>

Generated with [Devin](https://devin.ai)

Co-Authored-By: Devin <158243242+devin-ai-integration[bot]@users.noreply.github.com>

package.json

@@ -1,6 +1,6 @@
 {
   "name": "primora",
-  "version": "0.5.0",
+  "version": "0.6.0",
   "private": true,
   "packageManager": "[email protected]",
   "workspaces": [