app: add loopback multi-project registry

CHANGELOG.md

@@ -7,6 +7,13 @@ loosely follows [Semantic Versioning](https://semver.org/spec/v2.0.0.html).
 ## [Unreleased]
 
 ### Added
+- patterm can now keep multiple local projects loaded in one loopback
+  daemon core, with command-palette entries to switch the current
+  client view or open another project without tearing down processes
+  in the previous project.
+- The status line now shows the current project name when multiple
+  projects are loaded, and the MCP startup greeting includes
+  `project_key` for diagnostics and future daemon routing.
 - MCP clients can now call `scratchpad_delete` with a scratchpad name
   to remove a shared project scratchpad.