improve script hot reload

pxl8.sh

@@ -344,6 +344,8 @@ case "$COMMAND" in
             src/pxl8_log.c
             src/pxl8_math.c
             src/pxl8_repl.c
+            src/pxl8_replay.c
+            src/pxl8_rng.c
             src/pxl8_save.c
             src/pxl8_script.c
             src/pxl8_sdl3.c
@@ -380,9 +382,23 @@ case "$COMMAND" in
             obj_file="$OBJECT_DIR/$obj_name"
             OBJECTS="$OBJECTS $obj_file"
 
+            NEEDS_REBUILD=false
             if [[ "$src_file" -nt "$obj_file" ]] || \
                [[ "src/pxl8_types.h" -nt "$obj_file" ]] || \
                [[ "src/pxl8_macros.h" -nt "$obj_file" ]]; then
+                NEEDS_REBUILD=true
+            fi
+
+            if [[ "$src_file" == "src/pxl8_script.c" ]]; then
+                for lua_file in src/lua/*.lua src/lua/pxl8/*.lua lib/fennel/fennel.lua; do
+                    if [[ -f "$lua_file" ]] && [[ "$lua_file" -nt "$obj_file" ]]; then
+                        NEEDS_REBUILD=true
+                        break
+                    fi
+                done
+            fi
+
+            if [[ "$NEEDS_REBUILD" == true ]]; then
                 NEED_LINK=true
                 compile_source_file "$src_file" "$obj_file" "$COMPILE_FLAGS"
                 SOURCES_COMPILED="yes"