This commit lands a broad host-security architecture update focused on enforceable sandbox execution, clearer permission semantics, and operator usability. Core execution/security changes - Introduce and wire a unified host sandbox runner for multi-OS execution: - macOS: sandbox-exec - Linux: bubblewrap + seccomp - Windows: WSL2 path - Remove silent fallback behavior in failure paths; sandbox-unavailable cases now fail closed instead of dropping to unsafe host execution. - Ensure host execution mode (sandbox/direct) is propagated consistently into runtime components, including sub-agent startup. Permission mode model upgrade - Rework readonly/approval behavior for run_command from brittle command-text gating to execution-layer enforcement: - readonly: run_command executes in read-only sandbox profile. - approval: run_command first executes read-only; when permission-denied is detected, request approval and retry once with writable sandbox for that single call. - Tool loop now returns final post-approval execution result, not intermediate permission-denied payloads. - Update permission-mode system messaging to describe user-visible behavior without exposing internal implementation details. Path authorization system - Add dynamic host policy module and persisted policy file. - Support dual path classes: - writable_paths (read+write) - readable_extra_paths (read-only) - Enforce file access in file_manager by access type (read vs write) under host mode. - Add host-only frontend 路径授权 management dialog (settings三级菜单入口), including mode switch between 可读可写 and 仅可读 with separate drafts and save flow. Sub-agent and terminal alignment - Sub-agent process launch now respects host execution mode and sandbox controls in host mode. - Keep terminal session model compatible with sandbox-first behavior and execution-mode propagation. Tool surface updates - Remove legacy file-management tools from active tool definitions (create_file/create_folder/rename_file/delete_file) while preserving historical conversation compatibility. Docs updates - Add dedicated architecture doc: docs/host_sandbox_and_permission_model.md - Refresh README and AGENTS sections to reflect updated permission/execution model and path-authorization semantics. Validation performed - python unittest smoke suite passes: test.test_server_refactor_smoke - frontend build passes: npm run build - syntax checks for touched Python modules completed |
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