补上命令行编译和固件打包：一次出带 Key / 不带 Key 两套，USB 只烧选中的那套。

- Makefile 源文件列表对齐 CodeBlocks，命令行 make 能编过；编完自动打到 ../release/
- 新增 tools/pack_firmware：按版本打出烧录器 / APP UFW / 网关双备份包，带 Key 和不带 Key 各一套
- build.bat key 烧带 Key，默认或不带参数烧 nokey；另一套只生成不写 Flash
- 删掉未使用的 version.txt；release/ 不进仓库

tools/sync_makefile_sources.py

@@ -0,0 +1,45 @@
+# -*- coding: utf-8 -*-
+"""Align Makefile c_SRC_FILES with AC701N.cbp compile units."""
+from __future__ import print_function
+import re
+from pathlib import Path
+
+root = Path(__file__).resolve().parents[1] / "JBao_JL7016_MOD_FW"
+cbp = (root / "AC701N.cbp").read_text(encoding="utf-8")
+mk_path = root / "Makefile"
+mk = mk_path.read_text(encoding="utf-8")
+
+cbp_cs = []
+for m in re.finditer(r'<Unit filename="([^"]+\.c)"', cbp):
+    rel = m.group(1).replace("\\", "/")
+    if (root / rel).is_file():
+        cbp_cs.append(rel)
+
+# keep order as in cbp, unique
+seen = set()
+ordered = []
+for rel in cbp_cs:
+    if rel not in seen:
+        seen.add(rel)
+        ordered.append(rel)
+
+block_lines = ["c_SRC_FILES := \\"]
+for i, rel in enumerate(ordered):
+    if i < len(ordered) - 1:
+        block_lines.append("\t{} \\".format(rel))
+    else:
+        block_lines.append("\t{}".format(rel))
+block_lines.append("")
+new_block = "\n".join(block_lines) + "\n"
+
+pat = re.compile(
+    r"# 需要编译的 \.c 文件\nc_SRC_FILES := \\(?:\n\t[^\n]+)*\n\n",
+    re.M,
+)
+if not pat.search(mk):
+    raise SystemExit("c_SRC_FILES block not found")
+
+mk2 = pat.sub("# 需要编译的 .c 文件\n" + new_block + "\n", mk, count=1)
+mk_path.write_text(mk2, encoding="utf-8", newline="\n")
+print("cbp c files:", len(ordered))
+print("makefile bytes:", mk_path.stat().st_size)