add plugin camera desktop

plugins/camera_desktop/ci/check_unicode_inventory.py

@@ -0,0 +1,74 @@
+#!/usr/bin/env python3
+"""Assert that every non-ASCII character appearing in windows/*.cpp|*.h also
+appears in ci/cp936_repro.cpp.
+
+Purpose: the CP936 simulation step in CI compiles cp936_repro.cpp to prove that
+/utf-8 resolves C4819 for the exact character set we use. If a new file adds a
+new Unicode character (e.g. a µ in a comment) without updating the synthetic
+repro, CI would silently keep passing while real Simplified-Chinese Windows
+hosts would start failing again.
+
+Run from the repo root. Exits non-zero with a clear message if drift is found.
+"""
+
+from __future__ import annotations
+
+import pathlib
+import sys
+
+# Windows runners default stdout to CP1252, which cannot encode characters
+# like → or ↔. Force UTF-8 so the diagnostic prints below never raise.
+try:
+    sys.stdout.reconfigure(encoding="utf-8", errors="replace")
+except Exception:
+    pass
+
+
+def non_ascii_chars(path: pathlib.Path) -> set[str]:
+    return {c for c in path.read_text(encoding="utf-8") if ord(c) > 0x7F}
+
+
+def main() -> int:
+    windows_sources = sorted(
+        list(pathlib.Path("windows").glob("*.cpp"))
+        + list(pathlib.Path("windows").glob("*.h"))
+    )
+    if not windows_sources:
+        print("::error::No windows/*.cpp|*.h files found, run from repo root.")
+        return 1
+
+    real: set[str] = set()
+    per_file: dict[str, set[str]] = {}
+    for f in windows_sources:
+        chars = non_ascii_chars(f)
+        if chars:
+            per_file[str(f)] = chars
+        real |= chars
+
+    synthetic_path = pathlib.Path("ci/cp936_repro.cpp")
+    if not synthetic_path.exists():
+        print(f"::error::{synthetic_path} missing.")
+        return 1
+
+    synthetic = non_ascii_chars(synthetic_path)
+
+    missing = real - synthetic
+    if missing:
+        print("::error::ci/cp936_repro.cpp is missing characters used in windows/ sources.")
+        print("Missing:")
+        for c in sorted(missing):
+            sources = [f for f, cs in per_file.items() if c in cs]
+            print(f"  U+{ord(c):04X}  {c!r}  (in: {', '.join(sources)})")
+        print()
+        print("Fix: add these characters to ci/cp936_repro.cpp so the CP936 CI")
+        print("simulation stays representative of the real sources.")
+        return 1
+
+    print(f"OK: all {len(real)} non-ASCII chars in windows/ are covered by {synthetic_path}.")
+    for c in sorted(real):
+        print(f"  U+{ord(c):04X}  {c}")
+    return 0
+
+
+if __name__ == "__main__":
+    sys.exit(main())

plugins/camera_desktop/ci/cp936_repro.cpp

@@ -0,0 +1,25 @@
+// Synthetic CP936-reproduction file for CI.
+//
+// This file deliberately contains every non-ASCII character that appears in
+// windows/*.cpp and windows/*.h, so that compiling it with
+//   cl /c /WX /source-charset:.936 /execution-charset:.936
+// reproduces the exact C4819 / C2220 failure that users see on Simplified
+// Chinese Windows hosts (where GetACP() == 936 / GBK).
+//
+// DO NOT add a BOM to this file. With a BOM, MSVC auto-detects UTF-8 and
+// ignores /source-charset:.936, which would defeat the test.
+//
+// If you add a new non-ASCII character anywhere under windows/, the CI step
+// `ci/check_unicode_inventory.py` will fail until you add that character
+// here. Keep the inventory below in sync.
+//
+// Covered characters (also listed explicitly so a byte-level grep for the
+// UTF-8 sequences finds them here):
+//   U+2026 HORIZONTAL ELLIPSIS          …
+//   U+2192 RIGHTWARDS ARROW             →
+//   U+2194 LEFT RIGHT ARROW             ↔
+//   U+2264 LESS-THAN OR EQUAL TO        ≤
+//   U+2500 BOX DRAWINGS LIGHT HORIZONTAL ─
+//
+// No code needed: /c (compile only) is sufficient to trigger C4819 on the
+// comment bytes above.