Fix syntax errors: double semicolon, invalid 00 literals; add NOTES.md for upstream bug

NOTES.md

@@ -0,0 +1,24 @@
+# Notes
+
+## Upstream Bug - `fetch_params.sqf` Line 158
+
+**File:** `scripts/shared/fetch_params.sqf`
+**Line:** 158
+**Type:** Logic bug (copy-paste error)
+
+The `default` case in the `switch (GRLIB_civilian_activity)` block writes to the wrong variable:
+
+```sqf
+// Line 153-159
+switch (GRLIB_civilian_activity) do {
+    case 0: {GRLIB_civilian_activity = 0;};
+    case 1: {GRLIB_civilian_activity = 0.5;};
+    case 2: {GRLIB_civilian_activity = 1;};
+    case 3: {GRLIB_civilian_activity = 2;};
+    default {GRLIB_csat_aggressivity = 1;};  // BUG: should be GRLIB_civilian_activity
+};
+```
+
+This is a copy-paste error from the `GRLIB_csat_aggressivity` block above (lines 144-151). If the mission param `Civilians` receives an out-of-range value, enemy aggressivity gets silently overwritten instead of defaulting civilian activity.
+
+Present in the upstream KP Liberation repository at the same location. Not introduced by this mission's setup.