170 lines
9.0 KiB
Markdown
170 lines
9.0 KiB
Markdown
<!-- event: create author: "yoi ticket" at: 2026-06-20T05:30:04Z -->
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## 作成
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LocalTicketBackend によって作成されました。
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---
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<!-- event: state_changed author: workspace-panel at: 2026-06-20T05:58:54Z from: ready to: queued reason: queued field: state -->
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## State changed
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Ticket を `workspace-panel` が queued にしました。
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---
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<!-- event: decision author: yoi-orchestrator at: 2026-06-20T06:00:44Z -->
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## Decision
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Routing decision: blocked_pending_dependency
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Panel Queue により routing 対象として確認したが、`00001KVHR3WRY` は `00001KVHR3WRF` に `depends_on` している。`00001KVHR3WRF` はまだ queued で未実装のため、この Ticket は実装開始せず queued のまま保持する。
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Next:
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- `00001KVHR3WRF` が closed になった後、改めて reroute する。
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---
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<!-- event: decision author: yoi-orchestrator at: 2026-06-20T07:29:56Z -->
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## Decision
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Routing decision: implementation_ready
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Reason:
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- Panel Queue により、この Ticket は Orchestrator routing 対象として明示許可された。
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- 前回は `00001KVHR3WRF` local stdio config/trust policy が未完了だったため blocked/queued hold としたが、現在 `00001KVHR3WRF` は closed。
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- Ticket body は stdio JSON-RPC lifecycle client の scope を initialize/capability negotiation/shutdown/process diagnostics foundation として明確に定義し、ToolRegistry/tools/resources/prompts exposure は non-goal として分離している。
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- 現在 inprogress は 0 件、child implementation Pods はなし、matching branch/worktree はなし、Orchestrator worktree は clean。
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- Risk domain は mcp / stdio / json-rpc / process-lifecycle / diagnostics だが、Ticket は explicit config only、bounded stderr diagnostics、safe shutdown/kill fallback、sampling/elicitation not advertised、no tools/resources/prompts registration などの invariants を明示している。bounded context check 後も implementation 前に必要な追加 human decision は見つからなかった。
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Evidence checked:
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- Ticket `00001KVHR3WRY` body / thread / relations / artifacts。
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- `TicketRelationQuery(00001KVHR3WRY)`: outgoing `depends_on 00001KVHR3WRF` is now closed。Incoming `00001KVHR3WS6` / `00001KVHR3WSN` are downstream and not blockers。
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- `TicketOrchestrationPlanQuery(00001KVHR3WRY)`: previous `blocked_by 00001KVHR3WRF` is resolved; accepted plan recorded now。
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- Workspace state:
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- Orchestrator worktree clean at `8f5eef94`。
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- queued: remaining MCP chain Tickets。
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- inprogress: 0。
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- visible Pods: self + peers only; spawned children 0。
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- no matching MCP lifecycle branch/worktree。
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IntentPacket:
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Intent:
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- Implement a local stdio MCP lifecycle client foundation that can spawn an explicitly configured local server, exchange newline-delimited JSON-RPC on stdin/stdout, run initialize/capability negotiation, send `notifications/initialized`, and shut down safely。
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- This Ticket must not expose MCP tools/resources/prompts to the model-visible ToolRegistry; it only provides the lifecycle/protocol substrate for later Tickets。
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Binding decisions / invariants:
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- Only explicit named config from `00001KVHR3WRF` can be used; no implicit discovery or auto-start from workspace/package presence。
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- Treat stdout as protocol messages and stderr as bounded diagnostics/logging, not automatic protocol failure。
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- Bound stdout/stderr lines, diagnostics, protocol payloads, startup timeout, request timeout, shutdown timeout, and kill fallback。
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- Include server name and startup phase in errors/diagnostics。
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- Do not advertise sampling or elicitation client capabilities; if server requests them, fail closed / return an error as appropriate。
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- Do not register tools/resources/prompts or expose any ToolRegistry surface in this Ticket。
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- No remote MCP / Streamable HTTP / OAuth。
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- Preserve trust boundary: local stdio server process runs as user OS executable; config validation is not sandbox authority。
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- Secret/env values from config must remain redacted in diagnostics/logs/errors。
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Requirements / acceptance criteria:
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- Mock local stdio MCP server initializes successfully。
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- Initialize failure reports server name and phase。
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- Stderr is bounded and redacted where needed。
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- Shutdown is safe and deterministic, with terminate/kill fallback。
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- Sampling/elicitation are not advertised and fail closed if requested。
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- No tools/resources/prompts are registered by this Ticket。
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- Tests use local mock MCP server processes and cover success/failure/shutdown/diagnostic paths。
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Escalate if:
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- Existing runtime boundaries make it unclear where lifecycle client should live without dragging ToolRegistry or Plugin feature authority into the config layer。
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- Protocol message typing requires a broad MCP provider substrate redesign。
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- Deterministic process tests are infeasible without an explicit test harness decision。
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Next action:
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- Record `queued -> inprogress` and commit Ticket records before creating the implementation worktree and spawning Coder。
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---
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<!-- event: state_changed author: yoi-orchestrator at: 2026-06-20T07:30:03Z from: queued to: inprogress reason: orchestrator_acceptance_mcp_stdio_lifecycle_client field: state -->
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## State changed
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Ticket body/thread, relation metadata, closed MCP config dependency, Orchestrator worktree state, visible Pods, existing branch/worktree, and bounded MCP lifecycle context were checked. Dependency `00001KVHR3WRF` is closed, no inprogress/capacity blocker exists, and no missing planning decision was found. Accepting this queued Ticket for implementation before worktree/Pod side effects.
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---
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<!-- event: implementation_report author: yoi-orchestrator at: 2026-06-20T07:30:59Z -->
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## Implementation report
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Implementation orchestration start:
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- Acceptance records were committed on Orchestrator branch: `c0e760d7 ticket: accept mcp stdio lifecycle client`。
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- Created implementation worktree `/home/hare/Projects/yoi/.worktree/00001KVHR3WRY-mcp-stdio-lifecycle-client` on branch `impl/00001KVHR3WRY-mcp-stdio-lifecycle-client` at `c0e760d7`。
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- Spawned Coder Pod `yoi-coder-00001KVHR3WRY` with write scope limited to the implementation worktree and read-only root scope only for runtime workspace identity。
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- Coder task explicitly forbids root/original workspace implementation, ToolRegistry/tools/resources/prompts exposure for this Ticket, merge, Ticket close, and cleanup。
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Next action:
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- Wait for Coder implementation report, then inspect branch diff/validation evidence and route to Reviewer。
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---
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<!-- event: implementation_report author: yoi-orchestrator at: 2026-06-20T07:45:58Z -->
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## Implementation report
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Coder implementation report received from `yoi-coder-00001KVHR3WRY`.
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Implementation commit:
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- `a114fa9d mcp: implement stdio lifecycle client`
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Changed areas reported:
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- Added new internal reusable crate `crates/mcp`。
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- Implemented stdio MCP lifecycle foundation:
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- explicit resolved stdio server spec/config bridge from typed manifest MCP config。
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- Tokio child process spawn with `stdin` / `stdout` / `stderr`。
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- newline-delimited JSON-RPC request/response handling。
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- `initialize` capability negotiation。
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- `notifications/initialized`。
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- bounded stdout/stderr/protocol payload handling。
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- bounded/redacted stderr diagnostics。
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- server-name + phase-aware errors。
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- safe shutdown via stdin close, wait, terminate, and kill fallback。
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- fail-closed server-to-client request handling including sampling/elicitation。
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- Added mock local stdio MCP server test binary scoped to `crates/mcp` tests。
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- Updated workspace membership and `package.nix` cargo hash。
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Coder validation reported:
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- `cargo test -p mcp`: passed。
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- `cargo check`: passed。
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- `cargo fmt --check`: passed。
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- `git diff --check`: passed。
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- `nix build .#yoi --no-link`: passed。
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Acceptance notes reported:
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- Mock stdio MCP server initializes successfully。
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- Initialize failure includes server name and `initialize` phase。
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- stderr diagnostics are bounded and secret/env values are redacted。
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- Shutdown is deterministic with terminate/kill fallback for uncooperative server。
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- Client capabilities do not advertise sampling or elicitation。
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- Server sampling requests receive JSON-RPC `-32601` fail-closed response。
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- No ToolRegistry/tool/resource/prompt registration was added。
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Known deferrals:
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- No MCP tools/resources/prompts exposure。
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- No remote MCP / Streamable HTTP / OAuth。
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- Downstream list/call/resource/prompt support remains for later Tickets。
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Orchestrator evidence checked before review dispatch:
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- Implementation worktree is clean。
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- HEAD is `a114fa9d`。
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- Diff from acceptance `c0e760d7..HEAD` is one implementation commit touching 8 files, about 1369 insertions / 1 deletion。
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- `git diff --check c0e760d7..HEAD` produced no diagnostics。
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Next action:
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- Dispatch Reviewer for r1 review against Ticket requirements, with focus on process lifecycle cleanup, JSON-RPC framing/bounds, stdout/stderr handling, secret redaction, sampling/elicitation fail-closed, no ToolRegistry/resources/prompts exposure, test determinism, and package/Nix impact。
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---
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