fix: resolve symlinks in update.sh, tui.sh, restart.sh

[xinhuagu]

SCRIPT_DIR used dirname $0 which points to the symlink's directory (e.g. ~/bin), not the actual repo. Now follows the symlink chain with readlink before resolving dirname. Fixes aceclaw-update, aceclaw-tui, aceclaw-restart when invoked via symlink.

Summary by CodeRabbit

• Bug Fixes
  • Improved symlink handling in build and utility scripts to ensure correct path resolution when scripts are invoked through symbolic links, enhancing reliability and consistency across different invocation methods.

[greptile-apps]

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[coderabbitai]

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ℹ️ Recent review info

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Configuration used: Path: .coderabbit.yaml

Review profile: CHILL

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Run ID: 60cc7403-d8cb-43f3-a210-599cbf73a5fb

📥 Commits

Reviewing files that changed from the base of the PR and between c0c77b4 and 35aa7f2.

📒 Files selected for processing (3)

• restart.sh
• tui.sh
• update.sh

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📝 Walkthrough

Walkthrough

Three shell scripts (restart.sh, tui.sh, update.sh) have been modified to resolve symlinks when computing the script directory. Each script now follows symlink targets iteratively to locate the real script path before deriving SCRIPT_DIR, ensuring all subsequent commands use the actual script directory instead of a symlink directory.

Changes

Cohort / File(s)	Summary
Symlink Resolution in Script Directory Detection restart.sh, tui.sh, update.sh	Modified each script to resolve symlinks when computing SCRIPT_DIR. Replaces direct dirname "$0" logic with a loop using readlink to follow symlink targets (handling relative links) until reaching the final non-symlink path, then derives SCRIPT_DIR from that resolved location. All subsequent path-dependent commands now use the resolved real directory.

Estimated code review effort

🎯 2 (Simple) | ⏱️ ~12 minutes

✨ Finishing Touches

📝 Generate docstrings

• Create stacked PR
• Commit on current branch

🧪 Generate unit tests (beta)

• Create PR with unit tests
• Commit unit tests in branch fix/update-resolve-symlink

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