fix(core-tool-watch): sync scan env with --no-install-project

The scan env checkout of main fails to build the socket-basics package
editable while main carries the LICENSE.md rename breakage (#79, fix
pending in #88). The scan only imports the dependencies (socketdev SDK),
never socket_basics itself, so skip installing the project entirely --
also insulates this guard from any future main-side packaging breakage.

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

Author: lelia

.github/workflows/core-tool-watch.yml

@@ -104,9 +104,13 @@ jobs:
           python-version: "3.12"
 
       - name: 🛠️ Install uv + sync scan env from main's lockfile (provides the socketdev SDK)
+        # --no-install-project: the scan only imports the DEPENDENCIES
+        # (socketdev SDK), never socket_basics itself, so skip building the
+        # local package -- faster, and immune to packaging breakage on main
+        # (e.g. a bad license-file rename) taking this guard down with it.
         run: |
           python -m pip install --upgrade pip uv
-          uv sync --locked --project .scan-env
+          uv sync --locked --project .scan-env --no-install-project
 
       - name: Select mode
         id: mode