feat(fsys): C++ 重写 static 模块（libhttp/libmsg 实现 + 安全审计 + 测试页）

fsys/Makefile

@@ -0,0 +1,26 @@
+CPP      = g++
+CPPFLAGS = -std=c++20 -O3 -Wall -Werror -pipe
+INCS     = -I ../libhttp/inc -I ../libmsg/inc -I /opt/homebrew/include
+LIBS     = -L ../libhttp/build -L ../libmsg/build -L /opt/homebrew/lib \
+           -lus_http -lus_httpclient -lus_msg -lboost_json \
+           -lssl -lcrypto -lcurl -lpthread
+RPATH    = -Wl,-rpath,'$$ORIGIN/../../libhttp/build' \
+           -Wl,-rpath,'$$ORIGIN/../../libmsg/build' \
+           -Wl,-rpath,/opt/homebrew/lib
+
+BUILD    = build
+TARGET   = $(BUILD)/fsys
+SRC      = src/fsys.cpp
+
+all: $(TARGET)
+
+$(BUILD):
+	mkdir -p $(BUILD)
+
+$(TARGET): $(SRC) | $(BUILD)
+	$(CPP) $(CPPFLAGS) $(INCS) -o $@ $< $(LIBS) $(RPATH)
+
+clean:
+	rm -f $(TARGET)
+
+.PHONY: all clean