feat(core): add ConfigTool for programmatic config read/write#2911

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wenshao wants to merge 6 commits intomainfrom

feat/config-tool

Commits on Apr 5, 2026

feat(core): add ConfigTool for programmatic config read/write

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claude
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fix: address review feedback on ConfigTool error handling

wenshao
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claude
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fix: address audit findings — prototype pollution, empty value, non-null assertion

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claude
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fix: remove permissionRules from ConfigTool confirmation

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claude
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fix: harden getDescriptor with Object.hasOwn, add config to CORE_TOOLS

wenshao
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claude
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fix: set ToolResult.error on failure, restrict type to string-only

wenshao
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claude
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