fix(ci): macOS Sci_Position ambiguity + codespell fixes

- Cast Sci_Position to qsizetype for QByteArray indexing (macOS long
  ambiguity between int and qsizetype overloads)
- Add SEH to codespell ignore list (valid Windows term)
- Fix re-uses → reuses, re-using → reusing

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

Author: nullmastermind

.github/workflows/codespell.yml

@@ -21,4 +21,4 @@ jobs:
         check_filenames: true
         path: ./src
         skip: "*.lua,*.ui"
-        ignore_words_list: "doubleclick,msdos"
+        ignore_words_list: "doubleclick,msdos,seh"

src/git/ChangesPanel.cpp

@@ -255,7 +255,7 @@ void ChangesPanel::onTreeClicked(const QModelIndex &index)
 
     // Host (GitTabWidget) knows the repo root; we pass the relative path
     // via the entry's relPath. For absolute paths we still need the repo;
-    // delegate that resolution to the host by re-using the existing
+    // delegate that resolution to the host by reusing the existing
     // GitStatusEntry / GitTabWidget contract.
     GitStatusEntry entry;
     entry.relPath        = rel;

src/git/GitCommitFetcher.h

@@ -39,7 +39,7 @@ class GitWatcher;
 //      and full message body.
 //   2. `git -c color.ui=never show --numstat -z --format= <sha>` for the
 //      file list with binary detection (numstat uses `-\t-\t<path>` for
-//      binaries — re-uses GitNumstatParser).
+//      binaries — reuses GitNumstatParser).
 //   3. `git -c color.ui=never show --first-parent --no-color -p
 //      --format= <sha>` for the actual unified diff bytes.
 //

src/git/GitDiffSyntaxMapper.cpp

@@ -71,7 +71,7 @@ class LexerDocument final : public Scintilla::IDocument
     {
         if (line < 0) return 0;
         const Sci_Position next = lineStartFor(line + 1);
-        if (next > 0 && next <= m_content.size() && m_content[next - 1] == '\n')
+        if (next > 0 && next <= m_content.size() && m_content[static_cast<qsizetype>(next - 1)] == '\n')
             return next - 1;
         return next;
     }
@@ -95,7 +95,7 @@ class LexerDocument final : public Scintilla::IDocument
     char SCI_METHOD StyleAt(Sci_Position position) const override
     {
         if (position < 0 || position >= m_styles.size()) return 0;
-        return m_styles[position];
+        return m_styles[static_cast<qsizetype>(position)];
     }
     Sci_Position SCI_METHOD LineFromPosition(Sci_Position position) const override
     {
@@ -163,7 +163,7 @@ class LexerDocument final : public Scintilla::IDocument
     {
         if (pWidth) *pWidth = 1;
         if (position < 0 || position >= m_content.size()) return 0;
-        return static_cast<unsigned char>(m_content[position]);
+        return static_cast<unsigned char>(m_content[static_cast<qsizetype>(position)]);
     }
 
 private: