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

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作成

LocalTicketBackend によって作成されました。

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。

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。

State changed

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

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.

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.

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.

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.

Review: approve

Review result: approve

Reviewed commit 963db29d960d23b40e32d6b07db88f52b914a72d against Ticket 20260609-085148-001.

Evidence:

  • Diff scope is limited to crates/session-analytics/src/lib.rs and crates/yoi/src/session_cli.rs; no prompt, workflow, tool behavior, or batching-policy/enforcement changes were introduced.
  • SessionReport exposes response_batches in JSON with response-level tool metrics, histogram/top responses, nested Edit batching metrics, and edit round-trip/annotated-sequence metrics.
  • Response grouping is best-effort over contiguous top-level assistant_item entries; non-assistant entries close the response. Seeded segment_start.history tool calls are excluded from response metrics and add a response_boundary_approximation diagnostic.
  • New observations use bounded diagnostic language such as “possible batching opportunity” / “not automatic blame”; no policy enforcement or judgment of small edits is present.
  • Privacy boundary was checked with a synthetic JSONL fixture containing sentinel raw old_string, new_string, and tool output content. The JSON report preserved paths/counts/sizes/indexes and did not include the raw sentinel values.
  • Tests added synthetic fixtures for response-level tool grouping, same-file multi-Edit response metrics, pure consecutive edit-only streaks, Read/Bash/test-like interrupted sequences, no-edit sessions, and CLI JSON field exposure.

Validation run from the worktree:

  • cargo test -p session-analytics
  • cargo test -p yoi run_session_analyze_outputs_json
  • cargo fmt --check
  • git diff --check
  • cargo check --workspace
  • custom synthetic JSON/privacy assertion using target/debug/yoi session analyze --json
  • cargo run -q -p yoi -- ticket doctor
  • nix build .#yoi

Residual risk:

  • Assistant response boundaries remain inherently approximate because session JSONL does not carry an explicit response id; the implementation reports this for seeded history and otherwise keeps the metrics best-effort rather than authoritative.

No blocking issues found.

Review: approve

Review result: approve

Evidence:

  • Change scope is limited to crates/session-analytics/src/lib.rs and crates/yoi/src/session_cli.rs; no prompt/workflow behavior, tool behavior, or batching policy enforcement was added.
  • JSON report adds machine-readable response_batches fields covering response-level metrics, Edit batching metrics, and edit round-trip metrics.
  • Assistant response boundary is clearly best-effort: consecutive top-level assistant_item entries are grouped, non-assistant entries close a response, and seeded segment_start.history tool calls are excluded from response-level metrics with a response_boundary_approximation diagnostic.
  • Diagnostics are observational (possible batching opportunity / not automatic blame), not policy enforcement or blame for small edits.
  • Synthetic privacy fixture with raw old_string, new_string, and tool output sentinel was analyzed via yoi session analyze --json; raw sentinel content did not appear in output. Output stays at paths/counts/sizes/indexes/line ranges.
  • Tests are synthetic/minimal fixtures, not private local sessions. They cover response grouping, same-file multi-Edit, pure consecutive edit-only streaks, Read/Bash/test-like interruption, no-edit case, and CLI JSON exposure.

Reviewer validation:

  • cargo test -p session-analytics
  • cargo test -p yoi run_session_analyze_outputs_json
  • cargo fmt --check
  • git diff --check
  • cargo check --workspace
  • custom synthetic JSON/privacy assertion using target/debug/yoi session analyze --json
  • cargo run -q -p yoi -- ticket doctor
  • nix build .#yoi

Residual risk:

  • Session JSONL lacks explicit response ids, so response boundaries are inherently approximate. The implementation reports this boundedly and treats the feature as best-effort analytics, which is acceptable for this Ticket.

State changed

Ticket を closed にしました。

完了

Implemented, reviewed, merged, and validated.

Summary:

  • Added response_batches metrics to session analytics JSON output.
  • Added best-effort assistant-response grouping from consecutive top-level assistant_item JSONL entries.
  • Added response-level tool metrics: total responses, tool-call responses, total tool calls, per-response stats/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, and large-argument-compatible summaries.
  • Added edit round-trip metrics for pure edit-only streaks and interrupted/annotated sequences.
  • Preserved privacy boundary: no raw user input, raw tool arguments, raw file contents, raw session snippets, or raw tool output content in default output.
  • Kept diagnostics as observations/correlations, not blame or policy enforcement.

Implementation:

  • Coder commit: 963db29 analytics: add response batching metrics
  • Reviewer approved with no blocking findings.
  • Merge commit: c837fbc merge: add session analytics response batching

Validation after merge:

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