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 2026-08-11T15:21:23+00:00 2026-08-11T15:21:23+00:00 tanaka takashi isazaka@gmail.com 2026-08-11T15:21:23+00:00 urn:sha1:98b6a2aeedd591058c1d81e401d24f3ded162926 Model Ollama chat thinking separately from final content, preserve it only across assistant tool-call continuation, and keep private reasoning out of user results, session context, and logs. Accept native boolean and low/medium/high/max think values, normalize YAML booleans, and serialize explicit overrides using the native top-level chat field. Stop forcing think=false for structured planning, skill selection, and context summaries; corrected retries now retain the configured thinking mode. Update the specification, design, audit report, and requirement traceability for OLL-14. Add request/response, configuration, observability, retry, and tool-continuation coverage. Verified with 92 passing Agent.Core tests and a deepseek-v4-flash:cloud think:true MCP operational run. 2026-08-11T12:44:53+00:00 tanaka takashi isazaka@gmail.com 2026-08-11T12:44:53+00:00 urn:sha1:6c3458a5ec37a5b69957ad17c84de58984698f25 2026-08-09T15:07:27+00:00 tanaka takashi isazaka@gmail.com 2026-08-09T15:07:27+00:00 urn:sha1:e4a951d8b953c37b9078a48bce43cac6fd09edac HTTP observability callbacks previously called RollingFileLog synchronously. RollingFileLog writes to Console.Error before the application file, so a paused console or an undrained redirected stderr pipe could block Kestrel request threads for minutes and cause otherwise valid MCP clients to time out. Route ready, connection, request-started, request-completed, and HTTP JSONL work through a bounded 4,096-entry Channel. Request callbacks use TryWrite and never wait for console or file I/O. A dedicated single-reader background task preserves log ordering, performs rotation, reports dropped entries after queue pressure, and contains non-fatal sink failures. Keep the queue bounded so a stalled console cannot cause unbounded memory growth. When capacity is exhausted, request availability takes precedence over observability and the dropped count is emitted as an application warning after the writer resumes. Add a regression test with a deliberately blocked console writer. The background writer remains blocked while the HTTP completion callback returns within 250 ms. Release build passed with zero warnings and errors; Core tests passed 48/48 with skip 0. Regenerate the win-x64 self-contained 1.0.0 Bundle and ZIP. ZIP SHA-256: 62E28C903880A51614EC0C3CE23409580F803C7C124764CA7E1CB0EB2CCAA7A9. 2026-08-09T14:19:24+00:00 tanaka takashi isazaka@gmail.com 2026-08-09T14:19:24+00:00 urn:sha1:788df5e1d86c1bd91571d2b9cd1559599b65c9d6 Replace the MCP 1.4.1 stateful HTTP design with the official C# SDK 2.0.0 stateless transport. The SDK now owns protocol negotiation, server/discover, standard MCP headers, GET and DELETE handling, error serialization, caching hints, and legacy initialize compatibility; production code no longer maintains a custom wire-protocol workaround for MCP Inspector. Separate transport state from application conversation state. HTTP does not issue Mcp-Session-Id, while the existing session_id remains an Agent conversation identifier. Preserve agent_run and agent_status for clients without Tasks support and add the official ModelContextProtocol.Extensions.Tasks 2.0.0 path for capable clients. Add persistent MCP Task storage with atomic JSON replacement, user-only state location, configurable TTL and poll interval, restart recovery, cancellation correlation, and public Agent-to-MCP state mapping. Keep conformance-only tools and protocol exception fixtures in a test host so they cannot enter the Release Bundle. Run administrator, BFE, WFP transaction, and filter add/delete preflight before binding. Fail fast with exit code 2 and actionable localized diagnostics when sandbox enforcement is unavailable. Emit ready only after the listener starts and keep stdio stdout protocol-pure. Add shared rotating application and HTTP request logs. Record real socket endpoints, connection and trace identifiers, method, path, result, timing, media metadata, User-Agent, and MCP metadata. Do not trust X-Forwarded-For and do not log authorization, cookies, query data, request or response bodies, prompts, images, or Base64 payloads. Add typed logging and Tasks configuration, Japanese and English messages, protocol and operations documentation, design/specification deltas, traceability, and exact conformance acquisition/offline runner scripts for @modelcontextprotocol/conformance 0.2.0-alpha.11. Node remains test-only and is not a runtime dependency. Conformance evidence: server-stateless passed 28 of 28 checks with zero unexpected failures; DNS rebinding and multiple POST stream scenarios passed. The alpha Tasks lifecycle/cancel/error/required-task checks passed, while its wire-schema validator misclassifies CreateTaskResult and its MRTR composition remains incompatible with SDK 2.0.0. The aggregate conformance Gate is therefore recorded as PARTIAL, not PASS. Test-host fixture gaps for tools-list descriptions, JSON Schema diagnostics, caching fixtures, and a header-validation/required-Task capability conflict are also recorded without expected-failure masking. Verification: Release build passed with 0 warnings and 0 errors; Planner tests 10/10 and Core tests 47/47 passed with skip 0. The last Windows suite run passed 19/25; five WFP cases require an elevated token and one symlink case requires unavailable host privilege, so the elevated security Gate remains open. A win-x64 self-contained 1.0.0 Bundle and ZIP were regenerated under build/Release/publish; runtime check was intentionally skipped in this non-elevated session. Evidence remains under ignored artifacts/evidence/mcp-2026-07-28. Harden release regeneration when another shell holds the previous Bundle directory as its current directory: validate the target and remove only its children instead of deleting the directory itself. build/ and artifacts/ remain excluded from Git.