Windows-native MCP agent sandbox for Ollama with LPAC, NTFS ACL, Job Objects, and WFP. https://git.takashi-2521.com/winagent-sandbox-mcp.git/atom?h=main 2026-08-13T13:48:24+00:00 2026-08-13T13:48:24+00:00 tanaka takashi isazaka@gmail.com 2026-08-13T13:48:24+00:00 urn:sha1:9337ac3e5edd42bb17f5e2ade6c2de02c7ef576d Run agent-mcp with an explicit asInvoker manifest and move WFP and loopback mutations into a fixed requireAdministrator helper under the release admin directory. Add the Agent.Admin client and host projects with task-scoped runas launch, a logon-SID and Administrators-only local named pipe, remote-client rejection, mutual PID validation, strict versioned JSON framing, fixed network-only operations, and bounded messages. Delay ACL and network Task Resource application until the first process_run. Verify executable identity, managed entry points, DNS snapshots, and normal-token WRITE_DAC access before elevation; reuse the helper only within the Task and keep elevation failures terminal without policy replanning. Keep LPAC creation, executable approval, Job confinement, and ACL leases in the normal process. Make startup platform checks read-only, create the fixed Application Profile during apply, preserve dynamic WFP lifetime in the helper, and route persistent loopback recovery through the same elevated boundary. Update recovery journaling, localized elevation and IPC errors, audit events, release publishing, manifests, README guidance, Specifications, Design, implementation records, and requirement traceability for the on-demand elevation model. Add administrative-boundary, file-only no-elevation, elevation-terminal, lazy-resource, crash-recovery, manifest, IPC schema, and operational verification coverage. Verified Release build with zero warnings, Core 105/105, Planner 10/10, administrative boundary 4/4, elevated Windows suite 79/79, and published stdio/HTTP MCP E2E. 2026-08-11T20:44:54+00:00 tanaka takashi isazaka@gmail.com 2026-08-11T20:44:54+00:00 urn:sha1:b56614c814b904c224315a11f9686f0d47abd3d3 Rewrite the specification and design vocabulary around User Sandbox Configuration, Environment Resolution, Executable Approval, Effective Sandbox Policy, and Windows Enforcement. Move the Internal Tool catalog to the design without treating its count as a requirement, and update README, implementation planning, traceability, audit history, prompts, and the Python skill. Introduce schema_version 1 profiles, workspaces, mounts, executable aliases, network modes, and resource presets. Add local override merging, resolution and approval stores with atomic user-only persistence, fail-closed fingerprints, localized diagnostics, and executable/sandbox management CLI commands. Change Windows execution to LPAC entry approval with inherited descendant confinement. Separate read and execute ACLs, preserve protected OS DACLs, apply Job process/memory/timeout limits to the tree, enforce WFP network modes, prevent credential environment inheritance, disable out-of-tree MSBuild reuse, and harden transactional ACL/recovery cleanup. Isolate planning prompts from execution instructions, reject split coding plans that cannot satisfy task-scoped evidence, preserve configured thinking, and prevent optional task_update failures from corrupting completion checks. Add and update configuration, resolution, approval, LPAC, descendant, readonly/development, Registry/COM, WFP, recovery, .NET/Python/PowerShell process-tree, and Operational E2E coverage. Publish reproducible bundles while preserving deployment-local configuration, prompts, skills, logs, state, approvals, and resolutions. 2026-08-09T17:26:09+00:00 tanaka takashi isazaka@gmail.com 2026-08-09T17:26:09+00:00 urn:sha1:f2001b0c5a0b35e052ba62ef4f2e19bcc64fd870 Replace per-descendant ACL enumeration, security descriptor snapshots, journal entries, audit events, and cleanup rewrites with one inheritable ACE and one snapshot per approved directory root. Exact file approvals continue to receive non-inheritable file ACEs, and nested roots retain independent least-privilege scopes cleaned in reverse order. Keep protected descendant DACLs protected instead of disabling inheritance protection. Such paths remain OS-denied, preserving fail-safe behavior without silently expanding the SandboxPolicy. Remove the obsolete descendant normalization pass. Restoring the root security descriptor removes inherited Application SID ACEs from existing and Task-created descendants; crash recovery performs the same root descriptor restoration from the journal. Add tests for existing-child inheritance, newly-created-child inheritance, protected descendants, one journal entry per root, exact descriptor restoration, no residual Application SID ACE, and independent-process crash recovery. Extend the existing elevated recovery and backend tests to validate inherited child cleanup and one ACL apply/restore event per root. Verification: Release build passed with 0 warnings and 0 errors; Core 50/50 passed; Planner 10/10 passed; focused ACL/recovery 3/3 passed; elevated Windows Security 28/28 passed; all reported skip 0. Operational evidence: the updated Release Bundle completed MCP Task 9b4a59a9-1f9b-4362-85f4-7b858899b488. ACL apply/restore decreased from 3,583/3,583 events taking 72/57 seconds to 3/3 root_inheritance events completing within the same second. WFP residual filters were 0 and the Task journal was removed. Release: refreshed the win-x64 self-contained folder bundle, clean ZIP, manifest, and checksum while preserving the local agent.yaml. Agent.Windows.dll SHA-256 is 24FDDD5727D5455170B6742B1D21E023A0BD70F92C225A2681BB5832C7AC0824; ZIP SHA-256 is EF7684C1A5A6155B774F4DF23CB08E9D1CF676351BF2B7D0F57915304495F456. No dependencies were added. 2026-08-09T12:08:20+00:00 tanaka takashi isazaka@gmail.com 2026-08-09T12:08:20+00:00 urn:sha1:b07b41cd435991cd254957af79055080c85b346e Specifications、Design、ImplementationPlanの優先順位を整理し、単一Task実行モデル、typed option優先、設定可能なresource上限、local Ollamaを必須とするRelease Gateを文書化。 .NET 10/C# 14の5 production project、3 test project、E2E Clientを構築。typed YAML、en/ja locale、fixed/user prompt、stdioおよびloopback限定Streamable HTTP、agent_run/agent_status、Session、Ollama text/tool/Vision、TaskGraphとtoken accountingを実装。 Windows sandboxとしてfixed AppContainer、canonical/reparse検査、能力別ACL、path+SHA-256 executable approval、child-process restriction、Job Object、task journal、atomic file transaction、crash recoveryを実装。WFPのIPv4/IPv6 default denyとexact allow、dynamic session、temporary loopback exemption、管理者/BFE診断を追加。 Security/Recovery test、MCP/Ollama integration test、stdio/HTTP Operational E2E、Release Bundle生成・checksum・manifest・fresh extraction検査を追加。Requirement TraceabilityとPhase 0〜11の進捗、初回セットアップ可能なREADMEを整備。 Debug/Release/publish/objをrepository rootのbuild/へ集約し、旧project-local bin/objへの依存を除去。artifacts/とbuild/をGit管理外に設定し、clean checkoutでもsolution buildからE2E Clientまで生成可能にした。