yoi/.yoi/tickets/20260609-085148-001/thread.md

作成

LocalTicketBackend によって作成されました。

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Intake summary

既存 Ticket は、closed 済みの 20260609-032533-001 で追加された session-analytics 基盤への concrete follow-up として十分に具体化済み。目的は assistant response 単位の tool batching / edit round-trip 指標を JSON report に追加することで、実装対象 metrics、断定しない diagnostics 方針、非目標、受け入れ条件、テスト観点が明記されている。未決定の product/API/authority boundary はなく、Orchestrator は implementation_ready として routing できる。Reviewer focus は、response/tool-result cycle 推定の妥当性、raw content を出さない既存 analytics privacy boundary の維持、consecutive edit-only streak の過剰断定回避、既存 CLI/JSON schema との整合性。

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State changed

Intake で既存 Ticket の本文・thread・artifacts と関連する closed Ticket 20260609-032533-001 を確認した。要件は実装・レビュー・検証できる粒度まで整理済みであり、planning から ready にする。

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State changed

Ticket を workspace-panel が queued にしました。

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State changed

Accepted queued implementation under the updated parallel-capacity policy. This Ticket extends the already-landed session analytics crate and is independent from the active ToolExecutionContext, TicketList, and Panel worktrees.

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Decision

Routing decision: implementation_ready_parallel

Reason:

• This Ticket extends session-analytics, a recently landed and currently inactive area.
• It is independent from active ToolExecutionContext, TicketList output, and Panel UX work.
• User asked to prefer parallel work when conflicts are absent or expected small.

IntentPacket:

Intent:

• Add assistant-response-level tool batching and edit round-trip metrics to session-analytics so tool-use speed patterns can be evaluated in structured JSON.

Binding decisions / invariants:

• Infer assistant response / tool-result cycle units from session JSONL as best-effort analytics.
• Add response-level tool call metrics: total responses, tool-call responses, total tool calls, avg/p50/p90/max, histogram, top responses by tool call count.
• Add edit batching metrics: Edit calls per response, responses containing Edit, same-file multiple Edit calls in one response, files touched per edit response, and correlation with large edit args where possible.
• Add consecutive edit-only response streak metrics by file/path and response range, distinguishing pure edit-only streaks from sequences broken/annotated by Read/Bash/test/result-dependent steps.
• Diagnostics must be observations such as possible batching opportunity, not blame or policy enforcement.
• Preserve existing privacy boundary: no raw user input, raw tool args, raw file contents, raw session snippets, or raw tool output content in default output.
• Do not change prompt/workflow behavior, implement EditBatch/ordered patch tools, or force batching policy.

Validation:

• Tests for single response with multiple tools.
• Tests for same-response same-file multiple Edit.
• Tests for consecutive edit-only responses to same file.
• Tests for interleaved Read/test step breaking or annotating streak.
• Tests for sessions with no edits.
• cargo fmt --check, git diff --check, cargo run -q -p yoi -- ticket doctor, cargo check --workspace, nix build .#yoi.

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Implementation report

Implementation routing started in parallel with the current active work set.

Worktree/branch:

• Worktree: .worktree/session-analytics-response-batching
• Branch: session-analytics-response-batching
• Base/routing commit: 5d9e227 ticket: route analytics batching and parallel guidance

Spawned sibling Coder Pod:

• coder-session-analytics-response-batching
• Scope: non-recursive read on parent workspace root plus recursive write limited to the child worktree.

Parallel-routing rationale:

• This extends the isolated session-analytics crate/CLI surface and is independent from active ToolExecutionContext/TicketList/Panel work.
• Coder was instructed to use synthetic fixtures and preserve the privacy boundary.

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Implementation report

Coder implementation completed and is ready for sibling review.

Coder Pod:

• coder-session-analytics-response-batching
• Commit: 963db29d960d23b40e32d6b07db88f52b914a72d analytics: add response batching metrics
• Worktree status before review: clean branch session-analytics-response-batching
• Stopped after collecting output to reclaim delegated worktree scope.

Response boundary design:

• Best-effort response grouping uses consecutive top-level kind: "assistant_item" JSONL entries as one assistant response.
• Non-assistant entries such as tool_result, turn_end, or segment_start close the current response group.
• Seeded segment_start.history is excluded from response-level metrics because exact original response boundaries are not explicit; a response_boundary_approximation diagnostic records this limitation.
• Metrics live under response_batches and remain distinct from user-turn metrics.

Implementation summary:

• Added response-level tool metrics: total responses, tool-call responses, total tool calls, avg/p50/p90/max tools per response, histogram, and top tool-call responses.
• Added Edit batching metrics: responses containing Edit, total Edit calls, calls per response, same-file multi-Edit responses, files touched per Edit response, large-argument summary fields, and replace_all count.
• Added consecutive edit round-trip metrics: pure same-file edit-only streaks and interrupted/annotated sequences when Read/Bash/test-like steps intervene.
• Preserved privacy boundary: no raw user input, raw tool args, raw file contents, raw session snippets, or raw tool output content in default JSON output.

Changed files:

• crates/session-analytics/src/lib.rs
• crates/yoi/src/session_cli.rs

Coder validation reported passed:

• cargo test -p session-analytics
• cargo test -p yoi run_session_analyze_outputs_json
• cargo fmt --check
• git diff --check
• cargo run -q -p yoi -- ticket doctor
• cargo check --workspace
• nix build .#yoi

Focused tests covered multiple tools in one response, same-response same-file edits, consecutive edit-only responses, interleaved Read/test-like Bash interruption/annotation, sessions with no edits, existing analytics behavior, and CLI JSON shape.

Residual notes:

• Response boundaries are best-effort for current JSONL shape.
• Percentile/avg output is count-based and avg_milli avoids floating-point JSON instability.
• Bash test detection is heuristic and only annotates interrupted edit sequences; it is not blame/policy classification.

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