Fix copyright years and remove inaccurate scanner test documentation

- Update copyright year from 2024 to 2025 in all new scanner-related files:
  - src/ls.c, src/patch_scanner.c, src/patch_scanner.h
  - src/scanner_debug.c, tests/scanner/test_basic.c

- Remove tests/scanner/README.md which incorrectly claimed most scanner
  functionality was "TODO" when it's actually fully implemented with
  comprehensive test coverage including:
  - Complete unified/context diff parsing
  - Full Git extended header support
  - Binary patch handling and error conditions
  - Line number tracking and edge case handling

The scanner implementation is mature and well-tested, making the outdated
documentation misleading for developers.

Assisted-by: Cursor

Author: twaugh

Makefile.am

@@ -560,7 +560,7 @@ endif
 EXTRA_DIST = $(man_MANS) \
 	tests/common.sh tests/soak-test \
 	$(TESTS) $(XFAIL_TESTS) \
-	tests/scanner/test_basic.c tests/scanner/test_accumulated_headers.c tests/scanner/test_input_validation.c tests/scanner/README.md \
+	tests/scanner/test_basic.c tests/scanner/test_accumulated_headers.c tests/scanner/test_input_validation.c \
 	src/patch_scanner.c src/patch_scanner.h \
 	README.md BUGS COPYING TODO ChangeLog \
 	bootstrap \

src/ls.c

@@ -1,6 +1,6 @@
 /*
  * lsdiff - list files modified by a patch
- * Copyright (C) 2024 Tim Waugh <twaugh@redhat.com>
+ * Copyright (C) 2025 Tim Waugh <twaugh@redhat.com>
  *
  * This program is free software; you can redistribute it and/or modify
  * it under the terms of the GNU General Public License as published by

src/patch_scanner.c

@@ -1,6 +1,6 @@
 /*
  * patch_scanner.c - patch parsing implementation
- * Copyright (C) 2024 Tim Waugh <twaugh@redhat.com>
+ * Copyright (C) 2025 Tim Waugh <twaugh@redhat.com>
  *
  * This program is free software; you can redistribute it and/or modify
  * it under the terms of the GNU General Public License as published by

src/patch_scanner.h

@@ -1,6 +1,6 @@
 /*
  * patch_scanner.h - patch parsing API
- * Copyright (C) 2024 Tim Waugh <twaugh@redhat.com>
+ * Copyright (C) 2025 Tim Waugh <twaugh@redhat.com>
  *
  * This program is free software; you can redistribute it and/or modify
  * it under the terms of the GNU General Public License as published by

src/scanner_debug.c

@@ -1,6 +1,6 @@
 /*
  * scanner_debug.c - patch scanner debugging utility
- * Copyright (C) 2024 Tim Waugh <twaugh@redhat.com>
+ * Copyright (C) 2025 Tim Waugh <twaugh@redhat.com>
  *
  * This program is free software; you can redistribute it and/or modify
  * it under the terms of the GNU General Public License as published by

tests/scanner/README.md

@@ -1,6 +1,6 @@
 /*
  * test_basic.c - basic patch scanner tests
- * Copyright (C) 2024 Tim Waugh <twaugh@redhat.com>
+ * Copyright (C) 2025 Tim Waugh <twaugh@redhat.com>
  *
  * This program is free software; you can redistribute it and/or modify
  * it under the terms of the GNU General Public License as published by