forgectrl: bump to 5af4fb5 (panel dev container + devserver); allow the dev-environment paths

The forgectrl commit adds .devcontainer/, .vscode/tasks.json and
.env.example (the panel dev server replaces tools/mock.py, which was
already allowed under tools/**). None of it ships or changes target
behavior, so the coverage lint allows those paths for every component
rather than demanding acceptance coverage for editor setup.
Fetch-verified in the build tree (bitbake -c fetch forgectrl).

forgetest/forgetest/coverage.py

@@ -32,7 +32,10 @@ ALLOW = [
     ("*", "tests/**"),
     ("*", "graphify-out/**"),
     ("*", "**/.gitkeep"),
-    ("forgectrl", "tools/**"),        # the host-side mock, no target behavior
+    ("*", ".devcontainer/**"),        # editor/dev-environment setup, no target
+    ("*", ".vscode/**"),              #   behavior
+    ("*", ".env.example"),
+    ("forgectrl", "tools/**"),        # host-side dev tools (panel dev server)
 ]