Make wildcard expansion POSIX-compliant: exclude dotfiles by default

[Copilot]

Wildcard patterns (*, ?) were matching dotfiles (.gitignore, .env, etc.), causing unintended deletions via rm * and similar commands. This violates POSIX conventions where wildcards explicitly exclude files starting with ..

Changes

Wildcard expansion logic (base.ts, expansion.ts)

• Added dotfile filter: skip files starting with . unless pattern explicitly starts with .
• Applied to expandPathRecursive(), expandGlob(), and globExpand()

// Check if pattern explicitly targets dotfiles
const patternExplicitlyMatchesDotfiles = pattern.startsWith('.');

// Skip dotfiles unless explicitly matched
if (fileName.startsWith('.') && !patternExplicitlyMatchesDotfiles) {
  continue;
}

Behavior

• rm * → matches file.txt but not .gitignore
• rm .* → matches .gitignore
• rm .gitignore → matches .gitignore
• ls ? → matches a but not .

Impact

Breaking change. Aligns with standard Unix shell behavior (bash, zsh, sh). Prevents accidental deletion of configuration files.

Tests

• Unit tests for wildcard expansion with dotfiles
• Unit tests for git status parsing of deleted dotfiles
• Manual test scenarios documented

Original prompt

rm -rf *のようなワイルドカードに.gitignoreは入るべきでない。また、.gitignoreや.始まりのファイルを消したときgitpanelに表示されないし、処理できない。

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