🐛 fix: add random suffix to meowda script to avoid conflict between multiprocess

[SigureMo]

开新终端经常出现如下报错：

/Users/nyakku/.zshrc:142: file exists: /tmp/meowda-init-tmp.sh

大概率是多个 shell 之间冲突导致的，添加随机数试一下能否避免

[Copilot]

Pull request overview

This PR addresses a file conflict issue when opening multiple shell terminals simultaneously. The error "file exists: /tmp/meowda-init-tmp.sh" occurs because multiple shell processes try to create the same temporary file during initialization. The fix adds a random suffix using the $RANDOM variable to make each temporary file unique.

Key Changes:

• Modified the temporary script filename from a static name to include $RANDOM variable for uniqueness

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[Copilot]

Using $RANDOM for temporary file naming has several issues:

1. Shell compatibility: $RANDOM is specific to Bash and Zsh, but won't work in POSIX sh or other shells like dash, which may cause the initialization to fail on some systems.

2. Security concern: $RANDOM generates predictable values (0-32767), making it vulnerable to race conditions and potential security issues in /tmp directories.

3. Better alternative: Use the mktemp command instead, which is POSIX-compliant, generates cryptographically secure unique filenames, and automatically handles race conditions.

Consider changing this line to use mktemp:
MEOWDA_TMP_SCRIPT="$(mktemp /tmp/meowda-init-tmp.XXXXXX.sh)"

This ensures cross-shell compatibility and eliminates the race condition security concern.

Suggested change

	MEOWDA_TMP_SCRIPT="/tmp/meowda-init-tmp-$RANDOM.sh"
	MEOWDA_TMP_SCRIPT="$(mktemp /tmp/meowda-init-tmp.XXXXXX.sh)"