Rename the shared code namespace Contraband -> Institution; add license

The suite's classes all lived in namespace Contraband -- a historical artifact from the original
Contraband monolith, which read oddly for a class in Corrections or Policing. Renamed to namespace
Institution across every layer (46 .cs, the XML Class= refs, RootNamespace, the aggregate shim). The
Contraband MODULE, its Contraband.dll assembly, and the Contraband-named classes (CompContraband,
MapComponent_Contraband, ContrabandUtility, ...) are unchanged. Harness-verified 45/0.

Also adds a CC-BY-NC-SA 4.0 LICENSE file.

Aggregate: the settings shim now writes Institution.InstitutionSettings; Assemblies re-vendored with
the renamed DLLs; ROADMAP status refreshed to the six-layer suite at 0.1.0.

LICENSE

@@ -0,0 +1,24 @@
+Institution
+Copyright (c) 2026 flan
+
+This work is licensed under the Creative Commons
+Attribution-NonCommercial-ShareAlike 4.0 International License (CC BY-NC-SA 4.0).
+
+To view a copy of this license, visit:
+  https://creativecommons.org/licenses/by-nc-sa/4.0/
+Full legal text:
+  https://creativecommons.org/licenses/by-nc-sa/4.0/legalcode
+
+You are free to:
+  - Share  — copy and redistribute the material in any medium or format
+  - Adapt  — remix, transform, and build upon the material
+
+Under the following terms:
+  - Attribution  — You must give appropriate credit, provide a link to the
+    license, and indicate if changes were made.
+  - NonCommercial — You may not use the material for commercial purposes.
+  - ShareAlike   — If you remix, transform, or build upon the material, you
+    must distribute your contributions under the same license as the original.
+
+No warranties are given. The license may not give you all of the permissions
+necessary for your intended use (e.g. other rights such as publicity or privacy).