Add code execution harness with tool-use support#2

Merged

tuhinkanti merged 10 commits intomainfrom

feature/code-execution-harness

Feb 18, 2026

Commits on Feb 18, 2026

Add code execution harness with tool-use support
tuhinkanti
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Add file read/write, web fetch tools, Docker, and GitHub Actions CI
tuhinkanti
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Fix tool_result merging, file descriptor leak, test flakiness, and tool message persistence
tuhinkanti
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Security hardening: workspace confinement and non-root Docker
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Fix thread safety: StringBuilder -> StringBuffer and untimed join
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Add command safety layer to CodeExecutionTool
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Fix rm blocklist regex to catch flag reordering (-fr, -fir)
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Block shell-based workspace escape: path reads, SSRF, symlinks
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Add SSRF protection to WebSearchTool
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Fix readerThread.join() hang when command spawns background processes
tuhinkanti
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