Remove unnecessary comments, clean up code

scripts/git_hash.py

@@ -8,7 +8,7 @@ Usage: referenced from platformio.ini as:
 """
 import subprocess, os, re
 
-Import("env")  # noqa: F821 — PlatformIO injects this
+Import("env")  # noqa: F821 - PlatformIO injects this
 
 def get_git_hash():
     try:
@@ -27,14 +27,14 @@ def get_git_hash():
 git_hash = get_git_hash()
 print(f"[git_hash] short hash = {git_hash}")
 
-# ── Inject into firmware build ────────────────────────────────────────────────
+#  Inject into firmware build 
 env.Append(CPPDEFINES=[("GIT_HASH", f'\\"{git_hash}\\"')])  # noqa: F821
 
-# ── Write web/version.js ──────────────────────────────────────────────────────
+#  Write web/version.js 
 web_dir  = os.path.join(env.subst("$PROJECT_DIR"), "web")  # noqa: F821
 ver_file = os.path.join(web_dir, "version.js")
 os.makedirs(web_dir, exist_ok=True)
 with open(ver_file, "w") as f:
-    f.write(f"// Auto-generated by scripts/git_hash.py — do not edit\n")
+    f.write(f"// Auto-generated by scripts/git_hash.py - do not edit\n")
     f.write(f"const FIRMWARE_BUILD_HASH = '{git_hash}';\n")
 print(f"[git_hash] wrote {ver_file}")