yoi/.yoi/tickets/00001KVMT2J25/thread.md

<!-- event: create author: LocalTicketBackend at: 2026-06-21T10:02:01Z -->

## 作成

LocalTicketBackend によって作成されました。

---

<!-- event: state_changed author: workspace-panel at: 2026-06-21T10:07:42Z from: ready to: planning reason: panel_return_to_planning field: state -->

## State changed

Panel returned ready Ticket 00001KVMT2J25 to planning for requirements sync. This is not Queue routing and must not start implementation.

## User refinement instruction

今あるフロントSPAをnodeからdenoにしたい。
https://hareworks.net/blog/tech/sveltekit-with-deno


---

<!-- event: comment author: ticket-intake at: 2026-06-21T10:09:52Z -->

## Comment

## Intake requirements sync result

対象 Ticket `00001KVMT2J25` の item/thread/artifacts と関連 Ticket/source を確認した結果、今回の refinement instruction はこの Ticket の既存スコープとは一致しないため、`00001KVMT2J25` を ready に戻したり queue routing したりせず、requirements sync の結果としてここに記録する。

### User claims / request snapshot

- ユーザーは「今あるフロントSPAを node から deno にしたい」と述べた。
- 参考 URL として `https://hareworks.net/blog/tech/sveltekit-with-deno` が提示された。

### Confirmed facts / sources

- `00001KVMT2J25` の item は「Attach mid-stream TUI client without losing in-flight content」で、protocol / pod / TUI reconnect / stream-state の実装 Ticket である。
- `00001KVMT2J25` の thread には、Panel が ready から planning に戻した理由として上記 frontend/Deno refinement instruction が記録されている。
- 関連する closed Ticket `00001KVMFFYVX` は Workspace web control plane bootstrap で、SvelteKit static SPA skeleton を `web/workspace` に追加した作業である。
- `web/workspace/README.md` は現在の package manager を npm とし、`npm install`, `npm run check`, `npm run build` を案内している。
- `web/workspace/package.json` は SvelteKit static SPA の scripts / devDependencies を持ち、`package-lock.json` が存在する。
- `web/workspace/svelte.config.js` は `@sveltejs/adapter-static` を使い、`build/` に static output を出す設定である。
- `package.nix` は `web/workspace/node_modules`, `.svelte-kit`, `build` を source filter から除外している。
- `devshell.nix` には `deno` が含まれている。

### Intake conclusion

- この refinement は `00001KVMT2J25` の late-attach / stream-state work item とは別目的であり、同一 Ticket の requirements / acceptance criteria に混ぜると work item が破綻する。
- 既存の frontend bootstrap Ticket `00001KVMFFYVX` は closed であり、現在の npm 採用は当時の bootstrap decision / implementation detail として記録されている。Deno 移行は closed Ticket の再オープンではなく、別の concrete follow-up Ticket として扱うのが妥当。
- 現時点では、ユーザーが「新規 Ticket を作成して」と明示していないため、duplicate/new Ticket は作成しない。

### Candidate follow-up draft if user approves new Ticket

Title: Workspace web SPA の frontend tooling を npm/Node から Deno に移行する

Readiness: implementation_ready
Risk flags: [frontend-tooling, packaging, nix-source-filter, validation]

Requirements:
- `web/workspace` の開発・検証・build 手順を npm/Node 前提から Deno 前提へ移行する。
- SvelteKit static SPA であること、Rust backend が business/API authority を持つこと、static output が `web/workspace/build/` に出ることは維持する。
- `web/workspace/README.md` の package manager / command guidance を Deno 前提に更新する。
- lockfile と依存関係管理を Deno 前提で明確にし、古い npm lockfile/source-of-truth が残る場合は理由を明示する。
- generated artifacts (`node_modules`, `.svelte-kit`, `build` など) が git/Nix package source に混入しない状態を維持する。

Acceptance criteria:
- `web/workspace` の check/build が Deno command で成功する。
- README と project files から、通常の frontend 作業者が Deno で install/check/build できることが分かる。
- npm lockfile / npm scripts / Node-only guidance が不要なら削除され、必要なら Deno 移行後も残す理由が code/docs に明確である。
- `package.nix` / devshell / repository hygiene が Deno 移行後の generated artifacts と矛盾しない。
- 既存の Rust backend static serving assumptions と `.yoi` records as authority の境界を変えない。

Implementation latitude:
- Deno project layout は `deno.json` / `deno.lock` / `deno task` を使う形でよい。
- SvelteKit/Vite を Deno の npm compatibility で動かすか、最小限の package metadata を残すかは実装時に選んでよい。ただし source-of-truth と command guidance は曖昧にしない。

Validation:
- `cd web/workspace && deno task check`
- `cd web/workspace && deno task build`
- `git diff --check`
- packaging/source-filter を変更する場合は `nix build .#yoi --no-link` または Orchestrator が妥当と判断する同等確認

Next routing recommendation:
- `00001KVMT2J25` はこの refinement では implementation_ready に戻さない。
- ユーザーが Deno 移行の新規 Ticket 作成を承認した場合、上記 draft を別 Ticket として materialize する。
- ユーザーがあくまで `00001KVMT2J25` の差し替えを望む場合は、既存 Ticket を repurpose するのではなく、Orchestrator/maintainer に cancel/close/replacement 方針の判断を戻す。

---

<!-- event: intake_summary author: ticket-intake at: 2026-06-21T10:23:54Z -->

## Intake summary

ユーザーから、Deno 移行 refinement は `00001KVMT2J25` に誤って付いたものであり、`00001KVMT2J25` は ready に戻してよいとの明示指示があった。再確認したところ、`00001KVMT2J25` の body は late attach / in-flight stream snapshot の concrete work item で、readiness は `implementation_ready`、blocking open question はない。Deno 移行は別 Ticket `00001KVMV03QY` として作成済みであり、本 Ticket の要件には混ぜない。

---

<!-- event: state_changed author: ticket-intake at: 2026-06-21T10:23:54Z from: planning to: ready reason: requirements_sync_resolved field: state -->

## State changed

Deno 移行 refinement は誤付与として分離済み。`00001KVMT2J25` は元の protocol reconnect / unfinished block snapshot Ticket として Orchestrator routing 可能な ready 状態へ戻す。queue routing や implementation start は行わない。

---

<!-- event: state_changed author: workspace-panel at: 2026-06-21T10:56:32Z from: ready to: queued reason: queued field: state -->

## State changed

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


---

<!-- event: decision author: yoi-orchestrator at: 2026-06-21T10:58:27Z -->

## Decision

Routing decision: `implementation_ready`

Reason:
- Ticket body は in-flight LLM response reconnect snapshot の問題、affected blocks、protocol/pod/TUI relevant files、acceptance criteria、validation が具体化されている。
- `readiness: implementation_ready` で、relations / orchestration plan に blocker はない。
- Requirements sync で Deno refinement は誤付与として分離済みで、この Ticket は original protocol reconnect scope に戻されている。
- 同時 queued の `00001KVMV03QY` は frontend Deno tooling migration であり、この Ticket の protocol/pod/TUI stream-state work と主対象が異なるため並列実装可能と判断する。
- Orchestrator worktree は clean on `orchestration` at `b4786b40` で、対象 Ticket 用 worktree / branch は未作成。

Evidence checked:
- Ticket body / thread / artifacts via `TicketShow` and direct `item.md` read。
- `TicketRelationQuery(00001KVMT2J25)`: no relations / blockers。
- `TicketOrchestrationPlanQuery(00001KVMT2J25)`: no records。
- Orchestrator git state / worktree list / branch list checked from `/home/hare/Projects/yoi/.worktree/orchestration` only。
- Bounded code map:
  - `crates/protocol/src/lib.rs`: `Event::Snapshot`, `TextDelta`, `ThinkingDelta`, `ToolCallArgsDelta`, serialization tests。
  - `crates/pod/src/segment_log_sink.rs`: committed `LogEntry` snapshot / live entry receiver。
  - `crates/pod/src/controller.rs`: direct broadcast of streaming deltas and current controller comments around stream reconstruction。
  - `crates/pod/src/ipc/server.rs`: connect-time snapshot event construction。
  - `crates/tui/src/app.rs`: `restore_snapshot` and live delta handling for text/thinking/tool-call args。

IntentPacket:

Intent:
- Ensure late attach / reconnect during an in-flight LLM response can display already-generated unfinished text/thinking/tool-call args, then continue live deltas without gaps or duplicates。

Binding decisions / invariants:
- Fix at protocol/pod state level, not TUI-only workaround。
- Do not persist unfinished model output as finalized assistant history。
- Do not mutate/replay provider stream itself。
- Preserve committed session-log gap-free semantics。
- Preserve post-run reconnect behavior from finalized Snapshot entries。
- No hidden context/history injection。
- Keep in-flight snapshot bounded and typed; if large/unbounded policy is required, escalate。

Requirements / acceptance criteria:
- New client connecting during response sees unfinished assistant text, thinking/reasoning, and tool-call args generated before connect。
- Live deltas after connect append to same logical block without missing or duplicated content。
- Completed run reconnect still restores finalized transcript from normal Snapshot entries。
- Snapshot/live boundary gap-free / duplicate-free behavior is tested。
- TUI Snapshot restore + live delta handling has regression coverage。
- Focused validation covers protocol/pod/TUI relevant paths。

Implementation latitude:
- Add structured `in_flight` state to `Event::Snapshot`, or implement bounded/sequence replay buffer if cleaner。
- Controller/Pod may keep current accumulators for text/thinking/tool-call args。
- TUI may seed unfinished blocks from Snapshot and continue applying live deltas to the same block。
- Wire compatibility should be minimal; prioritize type safety and maintainability。

Escalate if:
- Design requires persisting unfinished output as durable history item。
- In-flight snapshot state becomes large enough to need truncation/bounding policy beyond a straightforward current-turn accumulator。
- Public protocol compatibility policy becomes a product decision。
- Scope spreads to Dashboard/Pod list preview or broader UX surfaces beyond TUI/console attach。

Validation plan:
- `cargo fmt --check`
- Focused `cargo test -p protocol` roundtrip/serialization tests for snapshot in-flight state。
- Focused `cargo test -p pod` tests for connect-time snapshot/live boundary and accumulator behavior。
- Focused `cargo test -p tui` tests for snapshot seeding plus live delta continuation。
- `cargo check -p protocol -p pod -p tui`
- `git diff --check`
- `yoi ticket doctor`。

---

<!-- event: state_changed author: yoi-orchestrator at: 2026-06-21T10:58:33Z from: queued to: inprogress reason: human_authorized_unblocked_protocol_stream_state_implementation field: state -->

## State changed

Human authorized queue routing from Workspace Dashboard. Ticket has concrete acceptance criteria, no recorded blockers, and is semantically separate from the frontend Deno tooling Ticket, so Orchestrator accepts implementation.

---

<!-- event: implementation_report author: yoi-orchestrator at: 2026-06-21T11:00:09Z -->

## Implementation report

Implementation start report:

- Created child implementation worktree:
  - `/home/hare/Projects/yoi/.worktree/00001KVMT2J25-inflight-snapshot`
- Created branch:
  - `impl/00001KVMT2J25-inflight-snapshot`
- Base commit:
  - `155e039e ticket: route deno and inflight snapshot work`
- Confirmed tracked Ticket project records are visible in the child worktree。
- Confirmed `.yoi/memory` has no tracked/untracked entries in the child worktree check。
- Spawned sibling Coder Pod:
  - `yoi-coder-00001KVMT2J25`
- Coder scope:
  - read: `/home/hare/Projects/yoi`
  - write: `/home/hare/Projects/yoi/.worktree/00001KVMT2J25-inflight-snapshot`

Parallelization note:
- `00001KVMV03QY` is active in a separate child worktree and targets frontend Deno tooling. This Ticket should stay limited to protocol/pod/TUI in-flight snapshot semantics。

Next action:
- Wait for Coder implementation report, then spawn Reviewer read-only for the implementation diff。

---

<!-- event: implementation_report author: yoi-orchestrator at: 2026-06-21T11:31:12Z -->

## Implementation report

Coder implementation report received from `yoi-coder-00001KVMT2J25`.

Implementation commit:
- `74aca6f6 fix: snapshot in-flight stream state`

Changed areas:
- `crates/protocol/src/lib.rs`
  - Added typed `InFlightSnapshot` / `InFlightBlock` state on `Event::Snapshot`。
  - Added serialization/default compatibility coverage。
- `crates/pod/src/in_flight.rs`
  - New in-flight accumulator for assistant text, thinking/reasoning, and tool-call args。
  - Snapshot/live boundary tests for no gap/duplicate。
- `crates/pod/src/controller.rs`
  - Streaming callbacks update the in-flight accumulator and broadcast live deltas from the same path。
- `crates/pod/src/ipc/alerter.rs`, `crates/pod/src/ipc/server.rs`
  - Connect-time snapshot now includes alerts plus typed in-flight stream state while subscribing live events。
- `crates/pod/src/pod.rs`
  - Clears matching in-flight blocks once committed assistant items reach durable session log entries。
- `crates/tui/src/app.rs`
  - Snapshot restore seeds unfinished assistant text/thinking/tool-call blocks。
  - Live deltas continue those seeded blocks。
  - Added regression coverage for snapshot seeding plus live continuation。
- Other touched files update test Snapshot constructors for the new `in_flight` field。

Coder validation reported:
- `cargo fmt --all --check`: passed
- `cargo test -p protocol`: passed
- `cargo test -p protocol event_snapshot_in_flight_roundtrip_and_default`: passed
- `cargo test -p pod in_flight`: passed
- `cargo test -p pod subscribe_with_alerts_and_in_flight_snapshot_splits_snapshot_and_live_deltas`: passed
- `cargo test -p tui`: passed
- `cargo test -p tui snapshot_in_flight_blocks_continue_with_live_deltas`: passed
- `cargo check -p protocol -p pod -p tui`: passed
- `git diff --check`: passed
- `target/debug/yoi ticket doctor`: passed

Known unrelated validation note:
- Full `cargo test -p pod` still fails on two prompt-resource assertion tests unrelated to this change:
  - `prompt::catalog::tests::pod_orchestration_guidance_section_renders_resource_body`
  - `prompt::system::tests::pod_orchestration_guidance_is_included_for_pod_management_tools`
  - Both assert missing text: `worktree status, diff, and test results`。

Orchestrator evidence checked:
- Implementation worktree is clean on `impl/00001KVMT2J25-inflight-snapshot`。
- HEAD is `74aca6f6`。
- Diff `155e039e..HEAD` touches 17 protocol/pod/TUI files, adding `crates/pod/src/in_flight.rs` and updating Snapshot constructors/tests。
- `git diff --check 155e039e..HEAD` produced no diagnostics。

Next action:
- Route to read-only Reviewer Pod for acceptance review against the Ticket。

---

<!-- event: comment author: yoi-orchestrator at: 2026-06-21T11:31:55Z -->

## Comment

Review routing:

Spawned read-only Reviewer Pod:
- `yoi-reviewer-00001KVMT2J25-r1`

Review target:
- Worktree: `/home/hare/Projects/yoi/.worktree/00001KVMT2J25-inflight-snapshot`
- Branch: `impl/00001KVMT2J25-inflight-snapshot`
- Baseline: `155e039e`
- Implementation commit: `74aca6f6 fix: snapshot in-flight stream state`
- Diff: `155e039e..74aca6f6`

Reviewer scope:
- read-only `/home/hare/Projects/yoi`

Reviewer focus:
- Snapshot/live subscription ordering is gap-free。
- Seeded unfinished blocks and later live deltas do not duplicate content。
- Accumulator lifecycle clears after durable assistant commit and does not leak across runs。
- Tool-call args partial JSON string deltas accumulate correctly。
- Thinking/reasoning blocks remain separated and safe。
- Finished-run reconnect still restores finalized transcript normally。
- No unfinished model output is persisted as finalized history。
- TUI restore seeding is compatible with existing live delta handlers。

Orchestrator will wait for reviewer verdict before integration。

---

<!-- event: review author: yoi-reviewer-00001KVMT2J25-r1 at: 2026-06-21T11:37:35Z status: request_changes -->

## Review: request changes

Verdict: `request_changes`

確認範囲:
- Ticket authority:
  - `.yoi/tickets/00001KVMT2J25/item.md`
  - `.yoi/tickets/00001KVMT2J25/thread.md`
- Diff `155e039e..74aca6f6`, including:
  - `crates/protocol/src/lib.rs`
  - `crates/pod/src/in_flight.rs`
  - `crates/pod/src/controller.rs`
  - `crates/pod/src/ipc/alerter.rs`
  - `crates/pod/src/ipc/server.rs`
  - `crates/pod/src/pod.rs`
  - `crates/pod/src/segment_log_sink.rs`
  - `crates/tui/src/app.rs`
  - constructor/test updates in pod/TUI/discovery/spawn/dashboard-related test files

Blocking issue:

1. Snapshot/live boundary still has a gap for finalized assistant items committed between the session-log snapshot and the in-flight snapshot。

The implementation makes in-flight streaming deltas mostly gap-free by holding the in-flight mutex across subscribe/snapshot, but the full connection snapshot is not atomic across the committed session-log mirror and the new in-flight accumulator。

Relevant path:
- `crates/pod/src/ipc/server.rs:112` takes `handle.sink.subscribe_with_snapshot()` first。
- `crates/pod/src/ipc/server.rs:118-120` then subscribes/snapshots alerts + in-flight state。
- `crates/pod/src/pod.rs:182-191` persists an entry, clears matching in-flight state for `LogEntry::AssistantItem`, then publishes to the session-log sink。
- `crates/pod/src/segment_log_sink.rs:90-103` documents that `AssistantItem` is mirror-only and not live-broadcast。
- `crates/pod/src/segment_log_sink.rs:120-127` confirms only `SegmentStart`, `UserInput`, `SystemItem`, and `Invoke` are live-relevant。

Race:
1. New client connects。
2. Server snapshots session-log entries at N。
3. LLM response finalizes and appends `LogEntry::AssistantItem`。
4. `append_entry` clears the matching in-flight text/thinking block。
5. `SegmentLogSink::publish` mirrors the `AssistantItem`, but does not broadcast it live。
6. Server snapshots in-flight state, now empty/cleared。
7. Client receives `Event::Snapshot` with no finalized assistant item in `entries`, no unfinished/finalized in-flight block, and no live committed assistant event forthcoming。

This violates the Ticket invariant that Snapshot and post-Snapshot live events must be gap-free and duplicate-free。

Required fix:
- Make the connection snapshot atomic enough across session-log mirror and in-flight state, or otherwise ensure committed assistant items cannot disappear in this boundary。
- Add an integrated regression test around session-log snapshot + in-flight snapshot + mirror-only assistant commit boundary。
- Ensure the fix still avoids persisting unfinished output as final history and still does not duplicate content when final AssistantItem is included in committed snapshot。

Non-blocking concerns:
- The suggested focused test name `subscribe_with_alerts_and_in_flight_snapshot_splits_snapshot_and_live_deltas` selected 0 tests; no matching test exists。Add/rename an integrated focused test so validation can target the boundary reliably。
- Minor protocol doc issue: `Greeting` doc comment appears displaced so “Pod self-description...” now sits immediately before `InFlightSnapshot` in `crates/protocol/src/lib.rs`。Not blocking but should be cleaned up if easy。

Reviewer validation:
- `git diff --check 155e039e..HEAD`: passed
- `cargo fmt --all --check`: passed
- `cargo test -p protocol`: passed, 40 tests
- `cargo test -p pod in_flight`: passed selected tests
- `cargo test -p pod subscribe_with_alerts_and_in_flight_snapshot_splits_snapshot_and_live_deltas`: selected 0 tests / no matching test
- `cargo test -p tui snapshot_in_flight_blocks_continue_with_live_deltas`: passed
- `cargo test -p tui`: passed, 367 tests
- `cargo check -p protocol -p pod -p tui`: passed
- `target/debug/yoi ticket doctor`: passed (`doctor: ok`)
- Full `cargo test -p pod`: failed only on the two known unrelated prompt-resource assertion tests。

Worktree status:
- Clean on `impl/00001KVMT2J25-inflight-snapshot`。

---

<!-- event: implementation_report author: yoi-orchestrator at: 2026-06-21T11:53:00Z -->

## Implementation report

Coder r1-fix report received from `yoi-coder-00001KVMT2J25`.

New fix commit:
- `061136d7 fix: close in-flight snapshot commit race`

Branch commits now:
- `74aca6f6 fix: snapshot in-flight stream state`
- `061136d7 fix: close in-flight snapshot commit race`

Fix summary:
- `crates/pod/src/ipc/server.rs`
  - Connect-time snapshot now holds the in-flight stream lock while taking the session-log mirror snapshot, preventing finalized mirror-only `AssistantItem` entries from falling between committed snapshot entries and in-flight snapshot state。
- `crates/pod/src/pod.rs`
  - `append_entry` now clears matching in-flight assistant state and publishes finalized `AssistantItem` to the mirror under the same in-flight critical section。
- `crates/pod/src/in_flight.rs`
  - Added `clear_for_committed_item_then` helper for atomic clear + publish ordering。
  - Added integrated regression tests:
    - `session_log_and_in_flight_snapshot_prevents_mirror_only_assistant_gap`
    - `committed_assistant_snapshot_does_not_duplicate_in_flight_block`
- `crates/pod/src/ipc/alerter.rs`
  - Removed earlier non-atomic combined alert/in-flight snapshot helper。
- `crates/protocol/src/lib.rs`
  - Fixed displaced `Greeting` doc comment。

Coder validation reported:
- `cargo fmt --all --check`: passed
- `cargo test -p protocol`: passed
- `cargo test -p pod --lib in_flight`: passed
- `cargo test -p pod session_log_and_in_flight_snapshot_prevents_mirror_only_assistant_gap`: passed
- `cargo test -p pod committed_assistant_snapshot_does_not_duplicate_in_flight_block`: passed
- `cargo test -p tui snapshot_in_flight_blocks_continue_with_live_deltas`: passed
- `cargo test -p tui`: passed
- `cargo check -p protocol -p pod -p tui`: passed
- `git diff --check`: passed
- `target/debug/yoi ticket doctor`: passed

Known unrelated validation note:
- Full `cargo test -p pod` still fails only on the known unrelated prompt-resource assertions:
  - `prompt::catalog::tests::pod_orchestration_guidance_section_renders_resource_body`
  - `prompt::system::tests::pod_orchestration_guidance_is_included_for_pod_management_tools`

Orchestrator evidence checked:
- Implementation worktree clean on `impl/00001KVMT2J25-inflight-snapshot`。
- HEAD is `061136d7`。
- r1-fix diff `74aca6f6..HEAD` touches expected protocol/pod files: `crates/pod/src/in_flight.rs`, `crates/pod/src/ipc/alerter.rs`, `crates/pod/src/ipc/server.rs`, `crates/pod/src/pod.rs`, and `crates/protocol/src/lib.rs`。
- `git diff --check 155e039e..HEAD` produced no diagnostics。

Next action:
- Route back to Reviewer for r2 verification of the commit-boundary race fix and final acceptance。

---

<!-- event: review author: yoi-reviewer-00001KVMT2J25-r1 at: 2026-06-21T11:56:44Z status: approve -->

## Review: approve

Verdict: `approve`

r2 review result:
- r1 blocker is resolved。
- The fix establishes a single critical section around session-log mirror snapshot and in-flight snapshot, and uses the same in-flight lock while clearing/publishing finalized `AssistantItem`s。

Relevant safe interleavings:
- If connect-time snapshot gets the in-flight lock first: session-log snapshot may not include finalized mirror-only `AssistantItem`, but unfinished/finished in-flight block is still present in `Event::Snapshot.in_flight`。
- If commit gets the in-flight lock first: it clears in-flight and publishes to session-log mirror under that lock, so later session-log snapshot includes finalized `AssistantItem` and `in_flight` is empty。
- Since `AssistantItem` remains mirror-only for live clients, this avoids the previous “absent from both snapshot and live events” gap。
- Duplicate prevention is preserved by clearing matching in-flight state before publishing finalized assistant entry。

Files / diff inspected:
- r1-fix diff `74aca6f6..061136d7`:
  - `crates/pod/src/in_flight.rs`
  - `crates/pod/src/ipc/alerter.rs`
  - `crates/pod/src/ipc/server.rs`
  - `crates/pod/src/pod.rs`
  - `crates/protocol/src/lib.rs`
- Overall scope/diff `155e039e..061136d7` against Ticket authority:
  - `.yoi/tickets/00001KVMT2J25/item.md`
  - `.yoi/tickets/00001KVMT2J25/thread.md`

Blocking issues:
- None。

Non-blocking concerns:
- None requiring changes. Integrated regression tests cover the r1 commit-boundary race and duplicate case。

Reviewer validation:
- `git diff --check 155e039e..HEAD`: passed
- `cargo fmt --all --check`: passed
- `cargo test -p protocol`: passed, 40 tests
- `cargo test -p pod --lib in_flight`: passed, 5 selected tests
- `cargo test -p pod session_log_and_in_flight_snapshot_prevents_mirror_only_assistant_gap`: passed
- `cargo test -p pod committed_assistant_snapshot_does_not_duplicate_in_flight_block`: passed
- `cargo test -p tui snapshot_in_flight_blocks_continue_with_live_deltas`: passed
- `cargo test -p tui`: passed, 367 tests
- `cargo check -p protocol -p pod -p tui`: passed
- `target/debug/yoi ticket doctor`: passed (`doctor: ok`)
- `cargo test -p pod`: failed only on the known unrelated prompt-resource assertions; summary 424 passed, 2 failed。

Worktree status:
- Clean on `impl/00001KVMT2J25-inflight-snapshot` at `061136d7`。

---

<!-- event: implementation_report author: yoi-orchestrator at: 2026-06-21T11:59:39Z -->

## Implementation report

Reviewer r2 approvalを受けて、実装ブランチを Orchestrator worktree の `orchestration` branch に統合した。

統合:
- Merge commit: `b21638f5 merge: inflight reconnect snapshot`
- Merged branch: `impl/00001KVMT2J25-inflight-snapshot`
- Implementation commits:
  - `74aca6f6 fix: snapshot in-flight stream state`
  - `061136d7 fix: close in-flight snapshot commit race`

Orchestrator worktree validation:
- `cargo fmt --all --check`: passed
- `git diff --check HEAD^1..HEAD`: passed
- `cargo test -p protocol`: passed (`40 passed`)
- `cargo test -p pod --lib in_flight`: passed (`5 selected tests`)
- `cargo test -p pod session_log_and_in_flight_snapshot_prevents_mirror_only_assistant_gap`: passed
- `cargo test -p pod committed_assistant_snapshot_does_not_duplicate_in_flight_block`: passed
- `cargo test -p tui snapshot_in_flight_blocks_continue_with_live_deltas`: passed
- `cargo test -p tui`: passed (`367 passed`)
- `cargo check -p protocol -p pod -p tui`: passed
- `cargo run -p yoi -- ticket doctor`: passed (`doctor: ok`)

Known unrelated validation note:
- Full `cargo test -p pod` was not repeated in Orchestrator after merge because Reviewer confirmed it still fails only on pre-existing prompt-resource assertions unrelated to this diff。

Final Orchestrator worktree status after validation: clean on `orchestration` at `b21638f5`。

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<!-- event: state_changed author: yoi-orchestrator at: 2026-06-21T11:59:47Z from: inprogress to: done reason: implementation_merged_and_validated field: state -->

## State changed

Reviewer approval、Orchestrator worktree への統合、protocol/pod/TUI focused tests、cargo check、Ticket doctor が完了したため `done` に遷移する。

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<!-- event: state_changed author: hare at: 2026-06-21T12:00:02Z from: done to: closed reason: closed field: state -->

## State changed

Ticket を closed にしました。


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<!-- event: close author: hare at: 2026-06-21T12:00:02Z status: closed -->

## 完了

In-flight LLM response 中の reconnect / late attach snapshot に unfinished blocks を含める protocol/pod/TUI 実装を統合した。

主な成果:
- `Event::Snapshot` に typed `InFlightSnapshot` / `InFlightBlock` を追加。
- Pod 側に assistant text / thinking / tool-call args の in-flight accumulator を追加。
- Streaming callbacks が accumulator 更新と live delta broadcast を同じ stream path で行うようにした。
- Connect-time snapshot が in-flight stream state を含むようにした。
- Session-log mirror snapshot と in-flight snapshot、および finalized `AssistantItem` publish/clear の critical section を揃え、mirror-only assistant commit が snapshot/live boundary で消える race を防止した。
- Finalized assistant item が committed snapshot に含まれる場合は matching in-flight state を clear して duplicate を防ぐ。
- TUI snapshot restore が unfinished text/thinking/tool-call args blocks を seed し、後続 live deltas が同じ logical block に continuation されるようにした。
- Serialization/default compatibility、snapshot/live no-gap/no-duplicate、TUI continuation の focused regression tests を追加。

統合・検証:
- Merge commit: `b21638f5 merge: inflight reconnect snapshot`
- Implementation commits: `74aca6f6`, `061136d7`
- Reviewer final verdict: approve
- Validation passed: `cargo fmt --all --check`, `git diff --check HEAD^1..HEAD`, `cargo test -p protocol`, `cargo test -p pod --lib in_flight`, `cargo test -p pod session_log_and_in_flight_snapshot_prevents_mirror_only_assistant_gap`, `cargo test -p pod committed_assistant_snapshot_does_not_duplicate_in_flight_block`, `cargo test -p tui snapshot_in_flight_blocks_continue_with_live_deltas`, `cargo test -p tui`, `cargo check -p protocol -p pod -p tui`, and `cargo run -p yoi -- ticket doctor`。

既知の無関係事項:
- Full `cargo test -p pod` は既存の prompt-resource assertion 2 件で失敗することが reviewer により確認済み。この Ticket の差分とは無関係。

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<!-- event: implementation_report author: yoi-orchestrator at: 2026-06-21T12:00:31Z -->

## Implementation report

Post-close cleanup completed。

- Stopped child Pods and reclaimed scope:
  - `yoi-coder-00001KVMT2J25`
  - `yoi-reviewer-00001KVMT2J25-r1`
- Removed implementation worktree:
  - `/home/hare/Projects/yoi/.worktree/00001KVMT2J25-inflight-snapshot`
- Deleted implementation branch:
  - `impl/00001KVMT2J25-inflight-snapshot`
- Orchestrator worktree remains clean on `orchestration` at `77b5276f`。

Root/original workspace was not used for merge/validation/cleanup operations。

---