Consolidate the suite into one installable Institution mod with toggles

This repo is now the single player-facing mod. It bundles the whole engine and
all three feature layers into one folder -- Core, Contraband, Justice, and Gangs
DLLs plus Contraband's Defs -- with one About.xml and a settings shim that turns
each layer on or off from a checkbox (all on by default). A player installs one
mod (this) and Harmony; no separate Core dependency.

- Source/Institution: the only new code, a settings shim (InstitutionMod +
  InstitutionModSettings) that writes the player's choices into Core's shared
  InstitutionSettings. It owns no gameplay.
- Tools/package.sh: rebuilds the sibling DLLs clean and vendors them + Contraband's
  content in here, so the repo stays a complete drop-in.
- Assemblies/, Defs/, Textures/, Languages/: the vendored, assembled mod.

Still fully modular and splittable: the feature code stays in its own repos and
DLLs (their About.xml files remain), so breaking this back into separate mods is
just shipping them individually -- no code change.

Defs/Misc_Contraband.xml

@@ -0,0 +1,35 @@
+<?xml version="1.0" encoding="utf-8" ?>
+<Defs>
+
+  <JobDef>
+    <defName>Contraband_SearchPawn</defName>
+    <driverClass>Contraband.JobDriver_SearchPawn</driverClass>
+    <reportString>searching TargetA.</reportString>
+  </JobDef>
+
+  <!--
+    A NEW WorkGiver class, not a patch on a vanilla one. That is what keeps this mod out of a
+    fight with the rest of the prison ecosystem:
+
+      - Custom Prisoner Interactions patches the NAMED vanilla warden givers (_Chat, _Convert,
+        _Enslave, _ReleasePrisoner). It cannot see this one.
+      - Prison Commons postfixes WorkGiver_Warden.ShouldSkip on the BASE class, which this
+        inherits and does not override, so searches respect prison-commons areas for free.
+
+    Priority sits below feeding: a starving prisoner matters more than a hidden shiv.
+  -->
+  <WorkGiverDef>
+    <defName>Contraband_WardenSearch</defName>
+    <label>search prisoners for contraband</label>
+    <giverClass>Contraband.WorkGiver_Warden_Search</giverClass>
+    <workType>Warden</workType>
+    <verb>search</verb>
+    <gerund>searching</gerund>
+    <priorityInType>40</priorityInType>
+    <requiredCapacities>
+      <li>Manipulation</li>
+      <li>Sight</li>
+    </requiredCapacities>
+  </WorkGiverDef>
+
+</Defs>