chore: move dormant prototypes to reference/ directory (#192)

game/npc-logic.js and scripts/guardrails.js are not loaded by the
browser runtime. Moving to reference/ with clear headers so the
active architecture is unambiguous.

- Added REFERENCE PROTOTYPE headers explaining dormant status
- Added reference/README.md with integration instructions
- Files use ES module syntax / have inline tests — not
  compatible with current <script> tag loading

Closes #192

reference/README.md

@@ -0,0 +1,29 @@
+# Reference Prototypes
+
+These files are **NOT loaded by the browser runtime**. They are preserved
+reference code for future integration work.
+
+## Why They're Here
+
+The current `index.html` loads scripts from `js/` via `<script>` tags.
+These files use incompatible patterns (ES modules, inline tests) or are
+not yet wired into the game engine.
+
+## Files
+
+- **npc-logic.js** — NPC state machine prototype. Uses `export default`
+  (ES module syntax). Would need refactoring to work with the current
+  script loading approach.
+
+- **guardrails.js** — Game logic consistency validator. Has inline test
+  code at the bottom. Would need cleanup before integration.
+
+## To Integrate
+
+1. Refactor to work without ES module exports (remove `export default`)
+2. Remove inline test code
+3. Add `<script src="reference/filename.js">` to `index.html`
+4. Wire into the game engine lifecycle
+5. Add tests
+
+See: https://forge.alexanderwhitestone.com/Timmy_Foundation/the-beacon/issues/192

reference/guardrails.js

@@ -1,3 +1,13 @@
+/**
+ * REFERENCE PROTOTYPE — Not loaded by the browser runtime.
+ *
+ * Symbolic guardrails for game logic consistency validation.
+ * Contains inline test code at bottom — not production-ready.
+ *
+ * Status: DORMANT — preserved for future integration work.
+ * See: https://forge.alexanderwhitestone.com/Timmy_Foundation/the-beacon/issues/192
+ */
+
 
 /**
  * Symbolic Guardrails for The Beacon

reference/npc-logic.js

@@ -1,3 +1,13 @@
+/**
+ * REFERENCE PROTOTYPE — Not loaded by the browser runtime.
+ *
+ * NPC state machine prototype. Uses ES module syntax (export default)
+ * which is not compatible with the current <script> tag loading approach.
+ *
+ * Status: DORMANT — preserved for future integration work.
+ * See: https://forge.alexanderwhitestone.com/Timmy_Foundation/the-beacon/issues/192
+ */
+
 
 class NPCStateMachine {
     constructor(states) {