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fabro/run.json
Fabro 96d8f56a33 checkpoint 
⚒️ Generated with [Fabro](https://fabro.sh)
2026-05-24 11:55:17 -04:00

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"value": "---\ntitle: fix: Prefer root stage TODO projection\ntype: fix\nstatus: active\ndate: 2026-05-24\n---\n\n# fix: Prefer Root Stage TODO Projection\n\n## Overview\n\nFix stage TODO projection so `StageProjection.todos` represents the selected\nstage agent's root session plan. Today a child OpenAI session can emit its own\n`todo.created` events on the same `stage_id`, replacing the root list and\ncausing later root `todo.updated` completions to be ignored. The visible\nsymptom is an agent sidebar showing a stale child TODO list such as `0/3`\ncompleted even though the root stage plan completed.\n\n## Problem Frame\n\nOpenAI `update_plan` lists are scoped per agent session as\n`openai_plan:<session_id>`. A stage may contain both the root agent session and\nchild/subagent sessions. `StageProjection` currently has only one\n`todos: Option<TodoListProjection>`, so the reducer must choose which list is\nthe stage-level list. The stage sidebar is a stage-agent summary, so it should\nshow the root stage session's list rather than whichever session most recently\ncreated todos.\n\n## Requirements Trace\n\n- R1. Root OpenAI plan TODOs must remain the projected `stage.todos` list even\n when child OpenAI sessions emit TODO events on the same stage.\n- R2. Later root OpenAI `todo.updated` and `todo.deleted` events must continue\n to apply after child OpenAI TODO events are observed.\n- R3. Child OpenAI TODO lists must not create, replace, or mutate\n `StageProjection.todos`.\n- R4. Anthropic task projection must remain unchanged because Anthropic task\n lists are intentionally scoped to the root session and shared across\n subagents.\n- R5. Do not change public API shapes, generated API types, or frontend\n rendering code for this fix.\n\n## Scope Boundaries\n\n- Do not add a multi-list TODO projection in this change.\n- Do not expose child/subagent TODO lists in the sidebar in this change.\n- Do not change `TodoListProjection`, `StageProjection`, or OpenAPI schemas.\n- Do not change event serialization, event names, or the agent `update_plan`\n tool behavior.\n\n## Context & Research\n\n### Relevant Code and Patterns\n\n- `lib/crates/fabro-agent/src/todo_tools.rs` scopes OpenAI plans by\n `session_id`, producing `openai_plan:<session_id>`.\n- `lib/crates/fabro-types/src/run_event/mod.rs` already carries\n `session_id` and `parent_session_id` on event envelopes.\n- `lib/crates/fabro-store/src/run_state.rs` owns the persisted-event reducer\n that updates `StageProjection.todos` from `todo.created`, `todo.updated`,\n and `todo.deleted`.\n- The existing `todo_reducer` test module in `run_state.rs` is the right place\n for focused regression coverage.\n- `apps/fabro-web/app/routes/run-stages.tsx` and\n `apps/fabro-web/app/components/stage-insights-sidebar.tsx` already render\n `stage.todos`; no UI change is needed if the projection is corrected.\n\n### Observed Failing Case\n\nFor run `01KSBT48J14ZMK9HQN48SVMG3T`, stage `simplify_gpt@1` had:\n\n- Root list `openai_plan:2f4458b9-1128-4a96-8dfa-bff4b73b9c33`: five root\n todos, all completed by later `todo.updated` events.\n- Child list `openai_plan:a09b9432-823d-4068-91fa-5c6185578e8e`: three child\n todos, created with `parent_session_id` set and never updated.\n\nThe child `todo.created` events replaced `stage.todos`, so the sidebar showed\nthe child list as `0/3` even after the root list completed.\n\n## Key Technical Decisions\n\n- Use `parent_session_id` as the root-vs-child signal for OpenAI plan\n projection. A root stage session has `parent_session_id == None`; child\n sessions have `parent_session_id != None`.\n- Ignore child OpenAI plan events for `StageProjection.todos`. This preserves\n the current single-list schema while making the selected list match the\n stage sidebar's meaning.\n- Keep Anthropic task projection unchanged. Anthropic tasks use\n `anthropic_tasks:<root_session_id>`, so child-session envelopes should still\n be allowed to update the shared root task list.\n- Treat legacy OpenAI events without `parent_session_id` as root-compatible for\n backwards compatibility.\n\n## Implementation Units\n\n- [ ] **Unit 1: Add reducer policy for projectable stage TODO events**\n\n**Goal:** Make the reducer distinguish root OpenAI plan events from child\nOpenAI plan events before mutating `stage.todos`.\n\n**Files:**\n- Modify: `lib/crates/fabro-store/src/run_state.rs`\n\n**Approach:**\n- Add a small helper near the TODO reducer functions, for example\n `should_project_stage_todo_event(stored: &RunEvent, list_kind:\n TodoListKind) -> bool`.\n- Return `false` only when `list_kind == TodoListKind::OpenAiPlan` and\n `stored.parent_session_id.is_some()`.\n- Return `true` for root OpenAI events and all Anthropic task events.\n- Call this helper in the `EventBody::TodoCreated`,\n `EventBody::TodoUpdated`, and `EventBody::TodoDeleted` match arms before\n resolving or mutating the stage projection.\n- Leave `apply_todo_created`, `apply_todo_updated`, and\n `apply_todo_deleted` focused on list mutation once the caller has decided\n the event is projectable.\n\n**Test scenarios:**\n- Root OpenAI events with no `parent_session_id` still create and update\n `stage.todos`.\n- Child OpenAI events with `parent_session_id` do not create `stage.todos`\n when no root list exists.\n- Child OpenAI events do not replace an existing root OpenAI list.\n- Root OpenAI updates still apply after ignored child OpenAI events.\n\n- [ ] **Unit 2: Add focused reducer regression tests**\n\n**Goal:** Lock the intended root-list behavior so future TODO projection work\ndoes not regress the sidebar.\n\n**Files:**\n- Modify: `lib/crates/fabro-store/src/run_state.rs`\n\n**Approach:**\n- Extend the existing `todo_reducer` module rather than creating a new test\n file.\n- Add a test helper or local event setup that sets\n `event.event.parent_session_id = Some(parent_session_id.to_string())` for\n child-session events.\n- Add one regression test that reproduces the failing sequence:\n root OpenAI creates list, child OpenAI creates a different list on the same\n stage, root OpenAI completes its items. Assert the final projection is the\n root list and all root statuses are completed.\n- Add one test proving child OpenAI events alone do not create a stage TODO\n projection.\n- Add one test proving Anthropic child-session task events still project.\n\n**Verification:**\n- `cargo nextest run -p fabro-store todo_reducer`\n- `cargo +nightly-2026-04-14 fmt --check --all`\n\n## System-Wide Impact\n\n- **API compatibility:** No response schema changes. Existing consumers of\n `StageProjection.todos` continue to receive a single list.\n- **UI behavior:** The sidebar should show the root agent's TODO progress for\n the selected stage. Child OpenAI session plans remain available only in the\n raw event stream for now.\n- **Historical runs:** Replaying existing event logs should produce corrected\n projections because the decision uses envelope fields already persisted on\n child events.\n- **Future extensibility:** If child/subagent TODO display is needed later,\n add a multi-list projection separately rather than overloading\n `stage.todos`.\n\n## Risks & Mitigations\n\n| Risk | Mitigation |\n|------|------------|\n| Some legacy child OpenAI events lack `parent_session_id` and still project as root | Accept this for backwards compatibility; only events with explicit child-session evidence are filtered. |\n| Anthropic child task updates could be accidentally filtered | Gate only `TodoListKind::OpenAiPlan`; add a regression test for `TodoListKind::AnthropicTasks`. |\n| Root list replacement semantics become ambiguous if a root stage emits multiple OpenAI list IDs | Preserve current root replacement behavior; the fix only prevents child lists from replacing root lists. |\n\n## Assumptions\n\n- `parent_session_id == None` is the canonical signal for the root stage agent\n session in stored event envelopes.\n- Child OpenAI TODO lists are not part of the current stage sidebar contract.\n- The correct near-term fix is projection selection, not a frontend workaround\n or a schema expansion.\n"
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"String": "---\ntitle: fix: Prefer root stage TODO projection\ntype: fix\nstatus: active\ndate: 2026-05-24\n---\n\n# fix: Prefer Root Stage TODO Projection\n\n## Overview\n\nFix stage TODO projection so `StageProjection.todos` represents the selected\nstage agent's root session plan. Today a child OpenAI session can emit its own\n`todo.created` events on the same `stage_id`, replacing the root list and\ncausing later root `todo.updated` completions to be ignored. The visible\nsymptom is an agent sidebar showing a stale child TODO list such as `0/3`\ncompleted even though the root stage plan completed.\n\n## Problem Frame\n\nOpenAI `update_plan` lists are scoped per agent session as\n`openai_plan:<session_id>`. A stage may contain both the root agent session and\nchild/subagent sessions. `StageProjection` currently has only one\n`todos: Option<TodoListProjection>`, so the reducer must choose which list is\nthe stage-level list. The stage sidebar is a stage-agent summary, so it should\nshow the root stage session's list rather than whichever session most recently\ncreated todos.\n\n## Requirements Trace\n\n- R1. Root OpenAI plan TODOs must remain the projected `stage.todos` list even\n when child OpenAI sessions emit TODO events on the same stage.\n- R2. Later root OpenAI `todo.updated` and `todo.deleted` events must continue\n to apply after child OpenAI TODO events are observed.\n- R3. Child OpenAI TODO lists must not create, replace, or mutate\n `StageProjection.todos`.\n- R4. Anthropic task projection must remain unchanged because Anthropic task\n lists are intentionally scoped to the root session and shared across\n subagents.\n- R5. Do not change public API shapes, generated API types, or frontend\n rendering code for this fix.\n\n## Scope Boundaries\n\n- Do not add a multi-list TODO projection in this change.\n- Do not expose child/subagent TODO lists in the sidebar in this change.\n- Do not change `TodoListProjection`, `StageProjection`, or OpenAPI schemas.\n- Do not change event serialization, event names, or the agent `update_plan`\n tool behavior.\n\n## Context & Research\n\n### Relevant Code and Patterns\n\n- `lib/crates/fabro-agent/src/todo_tools.rs` scopes OpenAI plans by\n `session_id`, producing `openai_plan:<session_id>`.\n- `lib/crates/fabro-types/src/run_event/mod.rs` already carries\n `session_id` and `parent_session_id` on event envelopes.\n- `lib/crates/fabro-store/src/run_state.rs` owns the persisted-event reducer\n that updates `StageProjection.todos` from `todo.created`, `todo.updated`,\n and `todo.deleted`.\n- The existing `todo_reducer` test module in `run_state.rs` is the right place\n for focused regression coverage.\n- `apps/fabro-web/app/routes/run-stages.tsx` and\n `apps/fabro-web/app/components/stage-insights-sidebar.tsx` already render\n `stage.todos`; no UI change is needed if the projection is corrected.\n\n### Observed Failing Case\n\nFor run `01KSBT48J14ZMK9HQN48SVMG3T`, stage `simplify_gpt@1` had:\n\n- Root list `openai_plan:2f4458b9-1128-4a96-8dfa-bff4b73b9c33`: five root\n todos, all completed by later `todo.updated` events.\n- Child list `openai_plan:a09b9432-823d-4068-91fa-5c6185578e8e`: three child\n todos, created with `parent_session_id` set and never updated.\n\nThe child `todo.created` events replaced `stage.todos`, so the sidebar showed\nthe child list as `0/3` even after the root list completed.\n\n## Key Technical Decisions\n\n- Use `parent_session_id` as the root-vs-child signal for OpenAI plan\n projection. A root stage session has `parent_session_id == None`; child\n sessions have `parent_session_id != None`.\n- Ignore child OpenAI plan events for `StageProjection.todos`. This preserves\n the current single-list schema while making the selected list match the\n stage sidebar's meaning.\n- Keep Anthropic task projection unchanged. Anthropic tasks use\n `anthropic_tasks:<root_session_id>`, so child-session envelopes should still\n be allowed to update the shared root task list.\n- Treat legacy OpenAI events without `parent_session_id` as root-compatible for\n backwards compatibility.\n\n## Implementation Units\n\n- [ ] **Unit 1: Add reducer policy for projectable stage TODO events**\n\n**Goal:** Make the reducer distinguish root OpenAI plan events from child\nOpenAI plan events before mutating `stage.todos`.\n\n**Files:**\n- Modify: `lib/crates/fabro-store/src/run_state.rs`\n\n**Approach:**\n- Add a small helper near the TODO reducer functions, for example\n `should_project_stage_todo_event(stored: &RunEvent, list_kind:\n TodoListKind) -> bool`.\n- Return `false` only when `list_kind == TodoListKind::OpenAiPlan` and\n `stored.parent_session_id.is_some()`.\n- Return `true` for root OpenAI events and all Anthropic task events.\n- Call this helper in the `EventBody::TodoCreated`,\n `EventBody::TodoUpdated`, and `EventBody::TodoDeleted` match arms before\n resolving or mutating the stage projection.\n- Leave `apply_todo_created`, `apply_todo_updated`, and\n `apply_todo_deleted` focused on list mutation once the caller has decided\n the event is projectable.\n\n**Test scenarios:**\n- Root OpenAI events with no `parent_session_id` still create and update\n `stage.todos`.\n- Child OpenAI events with `parent_session_id` do not create `stage.todos`\n when no root list exists.\n- Child OpenAI events do not replace an existing root OpenAI list.\n- Root OpenAI updates still apply after ignored child OpenAI events.\n\n- [ ] **Unit 2: Add focused reducer regression tests**\n\n**Goal:** Lock the intended root-list behavior so future TODO projection work\ndoes not regress the sidebar.\n\n**Files:**\n- Modify: `lib/crates/fabro-store/src/run_state.rs`\n\n**Approach:**\n- Extend the existing `todo_reducer` module rather than creating a new test\n file.\n- Add a test helper or local event setup that sets\n `event.event.parent_session_id = Some(parent_session_id.to_string())` for\n child-session events.\n- Add one regression test that reproduces the failing sequence:\n root OpenAI creates list, child OpenAI creates a different list on the same\n stage, root OpenAI completes its items. Assert the final projection is the\n root list and all root statuses are completed.\n- Add one test proving child OpenAI events alone do not create a stage TODO\n projection.\n- Add one test proving Anthropic child-session task events still project.\n\n**Verification:**\n- `cargo nextest run -p fabro-store todo_reducer`\n- `cargo +nightly-2026-04-14 fmt --check --all`\n\n## System-Wide Impact\n\n- **API compatibility:** No response schema changes. Existing consumers of\n `StageProjection.todos` continue to receive a single list.\n- **UI behavior:** The sidebar should show the root agent's TODO progress for\n the selected stage. Child OpenAI session plans remain available only in the\n raw event stream for now.\n- **Historical runs:** Replaying existing event logs should produce corrected\n projections because the decision uses envelope fields already persisted on\n child events.\n- **Future extensibility:** If child/subagent TODO display is needed later,\n add a multi-list projection separately rather than overloading\n `stage.todos`.\n\n## Risks & Mitigations\n\n| Risk | Mitigation |\n|------|------------|\n| Some legacy child OpenAI events lack `parent_session_id` and still project as root | Accept this for backwards compatibility; only events with explicit child-session evidence are filtered. |\n| Anthropic child task updates could be accidentally filtered | Gate only `TodoListKind::OpenAiPlan`; add a regression test for `TodoListKind::AnthropicTasks`. |\n| Root list replacement semantics become ambiguous if a root stage emits multiple OpenAI list IDs | Preserve current root replacement behavior; the fix only prevents child lists from replacing root lists. |\n\n## Assumptions\n\n- `parent_session_id == None` is the canonical signal for the root stage agent\n session in stored event envelopes.\n- Child OpenAI TODO lists are not part of the current stage sidebar contract.\n- The correct near-term fix is projection selection, not a frontend workaround\n or a schema expansion.\n"
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"graph.goal": "---\ntitle: fix: Prefer root stage TODO projection\ntype: fix\nstatus: active\ndate: 2026-05-24\n---\n\n# fix: Prefer Root Stage TODO Projection\n\n## Overview\n\nFix stage TODO projection so `StageProjection.todos` represents the selected\nstage agent's root session plan. Today a child OpenAI session can emit its own\n`todo.created` events on the same `stage_id`, replacing the root list and\ncausing later root `todo.updated` completions to be ignored. The visible\nsymptom is an agent sidebar showing a stale child TODO list such as `0/3`\ncompleted even though the root stage plan completed.\n\n## Problem Frame\n\nOpenAI `update_plan` lists are scoped per agent session as\n`openai_plan:<session_id>`. A stage may contain both the root agent session and\nchild/subagent sessions. `StageProjection` currently has only one\n`todos: Option<TodoListProjection>`, so the reducer must choose which list is\nthe stage-level list. The stage sidebar is a stage-agent summary, so it should\nshow the root stage session's list rather than whichever session most recently\ncreated todos.\n\n## Requirements Trace\n\n- R1. Root OpenAI plan TODOs must remain the projected `stage.todos` list even\n when child OpenAI sessions emit TODO events on the same stage.\n- R2. Later root OpenAI `todo.updated` and `todo.deleted` events must continue\n to apply after child OpenAI TODO events are observed.\n- R3. Child OpenAI TODO lists must not create, replace, or mutate\n `StageProjection.todos`.\n- R4. Anthropic task projection must remain unchanged because Anthropic task\n lists are intentionally scoped to the root session and shared across\n subagents.\n- R5. Do not change public API shapes, generated API types, or frontend\n rendering code for this fix.\n\n## Scope Boundaries\n\n- Do not add a multi-list TODO projection in this change.\n- Do not expose child/subagent TODO lists in the sidebar in this change.\n- Do not change `TodoListProjection`, `StageProjection`, or OpenAPI schemas.\n- Do not change event serialization, event names, or the agent `update_plan`\n tool behavior.\n\n## Context & Research\n\n### Relevant Code and Patterns\n\n- `lib/crates/fabro-agent/src/todo_tools.rs` scopes OpenAI plans by\n `session_id`, producing `openai_plan:<session_id>`.\n- `lib/crates/fabro-types/src/run_event/mod.rs` already carries\n `session_id` and `parent_session_id` on event envelopes.\n- `lib/crates/fabro-store/src/run_state.rs` owns the persisted-event reducer\n that updates `StageProjection.todos` from `todo.created`, `todo.updated`,\n and `todo.deleted`.\n- The existing `todo_reducer` test module in `run_state.rs` is the right place\n for focused regression coverage.\n- `apps/fabro-web/app/routes/run-stages.tsx` and\n `apps/fabro-web/app/components/stage-insights-sidebar.tsx` already render\n `stage.todos`; no UI change is needed if the projection is corrected.\n\n### Observed Failing Case\n\nFor run `01KSBT48J14ZMK9HQN48SVMG3T`, stage `simplify_gpt@1` had:\n\n- Root list `openai_plan:2f4458b9-1128-4a96-8dfa-bff4b73b9c33`: five root\n todos, all completed by later `todo.updated` events.\n- Child list `openai_plan:a09b9432-823d-4068-91fa-5c6185578e8e`: three child\n todos, created with `parent_session_id` set and never updated.\n\nThe child `todo.created` events replaced `stage.todos`, so the sidebar showed\nthe child list as `0/3` even after the root list completed.\n\n## Key Technical Decisions\n\n- Use `parent_session_id` as the root-vs-child signal for OpenAI plan\n projection. A root stage session has `parent_session_id == None`; child\n sessions have `parent_session_id != None`.\n- Ignore child OpenAI plan events for `StageProjection.todos`. This preserves\n the current single-list schema while making the selected list match the\n stage sidebar's meaning.\n- Keep Anthropic task projection unchanged. Anthropic tasks use\n `anthropic_tasks:<root_session_id>`, so child-session envelopes should still\n be allowed to update the shared root task list.\n- Treat legacy OpenAI events without `parent_session_id` as root-compatible for\n backwards compatibility.\n\n## Implementation Units\n\n- [ ] **Unit 1: Add reducer policy for projectable stage TODO events**\n\n**Goal:** Make the reducer distinguish root OpenAI plan events from child\nOpenAI plan events before mutating `stage.todos`.\n\n**Files:**\n- Modify: `lib/crates/fabro-store/src/run_state.rs`\n\n**Approach:**\n- Add a small helper near the TODO reducer functions, for example\n `should_project_stage_todo_event(stored: &RunEvent, list_kind:\n TodoListKind) -> bool`.\n- Return `false` only when `list_kind == TodoListKind::OpenAiPlan` and\n `stored.parent_session_id.is_some()`.\n- Return `true` for root OpenAI events and all Anthropic task events.\n- Call this helper in the `EventBody::TodoCreated`,\n `EventBody::TodoUpdated`, and `EventBody::TodoDeleted` match arms before\n resolving or mutating the stage projection.\n- Leave `apply_todo_created`, `apply_todo_updated`, and\n `apply_todo_deleted` focused on list mutation once the caller has decided\n the event is projectable.\n\n**Test scenarios:**\n- Root OpenAI events with no `parent_session_id` still create and update\n `stage.todos`.\n- Child OpenAI events with `parent_session_id` do not create `stage.todos`\n when no root list exists.\n- Child OpenAI events do not replace an existing root OpenAI list.\n- Root OpenAI updates still apply after ignored child OpenAI events.\n\n- [ ] **Unit 2: Add focused reducer regression tests**\n\n**Goal:** Lock the intended root-list behavior so future TODO projection work\ndoes not regress the sidebar.\n\n**Files:**\n- Modify: `lib/crates/fabro-store/src/run_state.rs`\n\n**Approach:**\n- Extend the existing `todo_reducer` module rather than creating a new test\n file.\n- Add a test helper or local event setup that sets\n `event.event.parent_session_id = Some(parent_session_id.to_string())` for\n child-session events.\n- Add one regression test that reproduces the failing sequence:\n root OpenAI creates list, child OpenAI creates a different list on the same\n stage, root OpenAI completes its items. Assert the final projection is the\n root list and all root statuses are completed.\n- Add one test proving child OpenAI events alone do not create a stage TODO\n projection.\n- Add one test proving Anthropic child-session task events still project.\n\n**Verification:**\n- `cargo nextest run -p fabro-store todo_reducer`\n- `cargo +nightly-2026-04-14 fmt --check --all`\n\n## System-Wide Impact\n\n- **API compatibility:** No response schema changes. Existing consumers of\n `StageProjection.todos` continue to receive a single list.\n- **UI behavior:** The sidebar should show the root agent's TODO progress for\n the selected stage. 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"graph.goal": "---\ntitle: fix: Prefer root stage TODO projection\ntype: fix\nstatus: active\ndate: 2026-05-24\n---\n\n# fix: Prefer Root Stage TODO Projection\n\n## Overview\n\nFix stage TODO projection so `StageProjection.todos` represents the selected\nstage agent's root session plan. Today a child OpenAI session can emit its own\n`todo.created` events on the same `stage_id`, replacing the root list and\ncausing later root `todo.updated` completions to be ignored. The visible\nsymptom is an agent sidebar showing a stale child TODO list such as `0/3`\ncompleted even though the root stage plan completed.\n\n## Problem Frame\n\nOpenAI `update_plan` lists are scoped per agent session as\n`openai_plan:<session_id>`. A stage may contain both the root agent session and\nchild/subagent sessions. `StageProjection` currently has only one\n`todos: Option<TodoListProjection>`, so the reducer must choose which list is\nthe stage-level list. The stage sidebar is a stage-agent summary, so it should\nshow the root stage session's list rather than whichever session most recently\ncreated todos.\n\n## Requirements Trace\n\n- R1. Root OpenAI plan TODOs must remain the projected `stage.todos` list even\n when child OpenAI sessions emit TODO events on the same stage.\n- R2. Later root OpenAI `todo.updated` and `todo.deleted` events must continue\n to apply after child OpenAI TODO events are observed.\n- R3. Child OpenAI TODO lists must not create, replace, or mutate\n `StageProjection.todos`.\n- R4. Anthropic task projection must remain unchanged because Anthropic task\n lists are intentionally scoped to the root session and shared across\n subagents.\n- R5. Do not change public API shapes, generated API types, or frontend\n rendering code for this fix.\n\n## Scope Boundaries\n\n- Do not add a multi-list TODO projection in this change.\n- Do not expose child/subagent TODO lists in the sidebar in this change.\n- Do not change `TodoListProjection`, `StageProjection`, or OpenAPI schemas.\n- Do not change event serialization, event names, or the agent `update_plan`\n tool behavior.\n\n## Context & Research\n\n### Relevant Code and Patterns\n\n- `lib/crates/fabro-agent/src/todo_tools.rs` scopes OpenAI plans by\n `session_id`, producing `openai_plan:<session_id>`.\n- `lib/crates/fabro-types/src/run_event/mod.rs` already carries\n `session_id` and `parent_session_id` on event envelopes.\n- `lib/crates/fabro-store/src/run_state.rs` owns the persisted-event reducer\n that updates `StageProjection.todos` from `todo.created`, `todo.updated`,\n and `todo.deleted`.\n- The existing `todo_reducer` test module in `run_state.rs` is the right place\n for focused regression coverage.\n- `apps/fabro-web/app/routes/run-stages.tsx` and\n `apps/fabro-web/app/components/stage-insights-sidebar.tsx` already render\n `stage.todos`; no UI change is needed if the projection is corrected.\n\n### Observed Failing Case\n\nFor run `01KSBT48J14ZMK9HQN48SVMG3T`, stage `simplify_gpt@1` had:\n\n- Root list `openai_plan:2f4458b9-1128-4a96-8dfa-bff4b73b9c33`: five root\n todos, all completed by later `todo.updated` events.\n- Child list `openai_plan:a09b9432-823d-4068-91fa-5c6185578e8e`: three child\n todos, created with `parent_session_id` set and never updated.\n\nThe child `todo.created` events replaced `stage.todos`, so the sidebar showed\nthe child list as `0/3` even after the root list completed.\n\n## Key Technical Decisions\n\n- Use `parent_session_id` as the root-vs-child signal for OpenAI plan\n projection. A root stage session has `parent_session_id == None`; child\n sessions have `parent_session_id != None`.\n- Ignore child OpenAI plan events for `StageProjection.todos`. This preserves\n the current single-list schema while making the selected list match the\n stage sidebar's meaning.\n- Keep Anthropic task projection unchanged. Anthropic tasks use\n `anthropic_tasks:<root_session_id>`, so child-session envelopes should still\n be allowed to update the shared root task list.\n- Treat legacy OpenAI events without `parent_session_id` as root-compatible for\n backwards compatibility.\n\n## Implementation Units\n\n- [ ] **Unit 1: Add reducer policy for projectable stage TODO events**\n\n**Goal:** Make the reducer distinguish root OpenAI plan events from child\nOpenAI plan events before mutating `stage.todos`.\n\n**Files:**\n- Modify: `lib/crates/fabro-store/src/run_state.rs`\n\n**Approach:**\n- Add a small helper near the TODO reducer functions, for example\n `should_project_stage_todo_event(stored: &RunEvent, list_kind:\n TodoListKind) -> bool`.\n- Return `false` only when `list_kind == TodoListKind::OpenAiPlan` and\n `stored.parent_session_id.is_some()`.\n- Return `true` for root OpenAI events and all Anthropic task events.\n- Call this helper in the `EventBody::TodoCreated`,\n `EventBody::TodoUpdated`, and `EventBody::TodoDeleted` match arms before\n resolving or mutating the stage projection.\n- Leave `apply_todo_created`, `apply_todo_updated`, and\n `apply_todo_deleted` focused on list mutation once the caller has decided\n the event is projectable.\n\n**Test scenarios:**\n- Root OpenAI events with no `parent_session_id` still create and update\n `stage.todos`.\n- Child OpenAI events with `parent_session_id` do not create `stage.todos`\n when no root list exists.\n- Child OpenAI events do not replace an existing root OpenAI list.\n- Root OpenAI updates still apply after ignored child OpenAI events.\n\n- [ ] **Unit 2: Add focused reducer regression tests**\n\n**Goal:** Lock the intended root-list behavior so future TODO projection work\ndoes not regress the sidebar.\n\n**Files:**\n- Modify: `lib/crates/fabro-store/src/run_state.rs`\n\n**Approach:**\n- Extend the existing `todo_reducer` module rather than creating a new test\n file.\n- Add a test helper or local event setup that sets\n `event.event.parent_session_id = Some(parent_session_id.to_string())` for\n child-session events.\n- Add one regression test that reproduces the failing sequence:\n root OpenAI creates list, child OpenAI creates a different list on the same\n stage, root OpenAI completes its items. Assert the final projection is the\n root list and all root statuses are completed.\n- Add one test proving child OpenAI events alone do not create a stage TODO\n projection.\n- Add one test proving Anthropic child-session task events still project.\n\n**Verification:**\n- `cargo nextest run -p fabro-store todo_reducer`\n- `cargo +nightly-2026-04-14 fmt --check --all`\n\n## System-Wide Impact\n\n- **API compatibility:** No response schema changes. Existing consumers of\n `StageProjection.todos` continue to receive a single list.\n- **UI behavior:** The sidebar should show the root agent's TODO progress for\n the selected stage. Child OpenAI session plans remain available only in the\n raw event stream for now.\n- **Historical runs:** Replaying existing event logs should produce corrected\n projections because the decision uses envelope fields already persisted on\n child events.\n- **Future extensibility:** If child/subagent TODO display is needed later,\n add a multi-list projection separately rather than overloading\n `stage.todos`.\n\n## Risks & Mitigations\n\n| Risk | Mitigation |\n|------|------------|\n| Some legacy child OpenAI events lack `parent_session_id` and still project as root | Accept this for backwards compatibility; only events with explicit child-session evidence are filtered. |\n| Anthropic child task updates could be accidentally filtered | Gate only `TodoListKind::OpenAiPlan`; add a regression test for `TodoListKind::AnthropicTasks`. |\n| Root list replacement semantics become ambiguous if a root stage emits multiple OpenAI list IDs | Preserve current root replacement behavior; the fix only prevents child lists from replacing root lists. |\n\n## Assumptions\n\n- `parent_session_id == None` is the canonical signal for the root stage agent\n session in stored event envelopes.\n- Child OpenAI TODO lists are not part of the current stage sidebar contract.\n- The correct near-term fix is projection selection, not a frontend workaround\n or a schema expansion.\n",
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"graph.goal": "---\ntitle: fix: Prefer root stage TODO projection\ntype: fix\nstatus: active\ndate: 2026-05-24\n---\n\n# fix: Prefer Root Stage TODO Projection\n\n## Overview\n\nFix stage TODO projection so `StageProjection.todos` represents the selected\nstage agent's root session plan. Today a child OpenAI session can emit its own\n`todo.created` events on the same `stage_id`, replacing the root list and\ncausing later root `todo.updated` completions to be ignored. The visible\nsymptom is an agent sidebar showing a stale child TODO list such as `0/3`\ncompleted even though the root stage plan completed.\n\n## Problem Frame\n\nOpenAI `update_plan` lists are scoped per agent session as\n`openai_plan:<session_id>`. A stage may contain both the root agent session and\nchild/subagent sessions. `StageProjection` currently has only one\n`todos: Option<TodoListProjection>`, so the reducer must choose which list is\nthe stage-level list. The stage sidebar is a stage-agent summary, so it should\nshow the root stage session's list rather than whichever session most recently\ncreated todos.\n\n## Requirements Trace\n\n- R1. Root OpenAI plan TODOs must remain the projected `stage.todos` list even\n when child OpenAI sessions emit TODO events on the same stage.\n- R2. Later root OpenAI `todo.updated` and `todo.deleted` events must continue\n to apply after child OpenAI TODO events are observed.\n- R3. Child OpenAI TODO lists must not create, replace, or mutate\n `StageProjection.todos`.\n- R4. Anthropic task projection must remain unchanged because Anthropic task\n lists are intentionally scoped to the root session and shared across\n subagents.\n- R5. Do not change public API shapes, generated API types, or frontend\n rendering code for this fix.\n\n## Scope Boundaries\n\n- Do not add a multi-list TODO projection in this change.\n- Do not expose child/subagent TODO lists in the sidebar in this change.\n- Do not change `TodoListProjection`, `StageProjection`, or OpenAPI schemas.\n- Do not change event serialization, event names, or the agent `update_plan`\n tool behavior.\n\n## Context & Research\n\n### Relevant Code and Patterns\n\n- `lib/crates/fabro-agent/src/todo_tools.rs` scopes OpenAI plans by\n `session_id`, producing `openai_plan:<session_id>`.\n- `lib/crates/fabro-types/src/run_event/mod.rs` already carries\n `session_id` and `parent_session_id` on event envelopes.\n- `lib/crates/fabro-store/src/run_state.rs` owns the persisted-event reducer\n that updates `StageProjection.todos` from `todo.created`, `todo.updated`,\n and `todo.deleted`.\n- The existing `todo_reducer` test module in `run_state.rs` is the right place\n for focused regression coverage.\n- `apps/fabro-web/app/routes/run-stages.tsx` and\n `apps/fabro-web/app/components/stage-insights-sidebar.tsx` already render\n `stage.todos`; no UI change is needed if the projection is corrected.\n\n### Observed Failing Case\n\nFor run `01KSBT48J14ZMK9HQN48SVMG3T`, stage `simplify_gpt@1` had:\n\n- Root list `openai_plan:2f4458b9-1128-4a96-8dfa-bff4b73b9c33`: five root\n todos, all completed by later `todo.updated` events.\n- Child list `openai_plan:a09b9432-823d-4068-91fa-5c6185578e8e`: three child\n todos, created with `parent_session_id` set and never updated.\n\nThe child `todo.created` events replaced `stage.todos`, so the sidebar showed\nthe child list as `0/3` even after the root list completed.\n\n## Key Technical Decisions\n\n- Use `parent_session_id` as the root-vs-child signal for OpenAI plan\n projection. A root stage session has `parent_session_id == None`; child\n sessions have `parent_session_id != None`.\n- Ignore child OpenAI plan events for `StageProjection.todos`. This preserves\n the current single-list schema while making the selected list match the\n stage sidebar's meaning.\n- Keep Anthropic task projection unchanged. Anthropic tasks use\n `anthropic_tasks:<root_session_id>`, so child-session envelopes should still\n be allowed to update the shared root task list.\n- Treat legacy OpenAI events without `parent_session_id` as root-compatible for\n backwards compatibility.\n\n## Implementation Units\n\n- [ ] **Unit 1: Add reducer policy for projectable stage TODO events**\n\n**Goal:** Make the reducer distinguish root OpenAI plan events from child\nOpenAI plan events before mutating `stage.todos`.\n\n**Files:**\n- Modify: `lib/crates/fabro-store/src/run_state.rs`\n\n**Approach:**\n- Add a small helper near the TODO reducer functions, for example\n `should_project_stage_todo_event(stored: &RunEvent, list_kind:\n TodoListKind) -> bool`.\n- Return `false` only when `list_kind == TodoListKind::OpenAiPlan` and\n `stored.parent_session_id.is_some()`.\n- Return `true` for root OpenAI events and all Anthropic task events.\n- Call this helper in the `EventBody::TodoCreated`,\n `EventBody::TodoUpdated`, and `EventBody::TodoDeleted` match arms before\n resolving or mutating the stage projection.\n- Leave `apply_todo_created`, `apply_todo_updated`, and\n `apply_todo_deleted` focused on list mutation once the caller has decided\n the event is projectable.\n\n**Test scenarios:**\n- Root OpenAI events with no `parent_session_id` still create and update\n `stage.todos`.\n- Child OpenAI events with `parent_session_id` do not create `stage.todos`\n when no root list exists.\n- Child OpenAI events do not replace an existing root OpenAI list.\n- Root OpenAI updates still apply after ignored child OpenAI events.\n\n- [ ] **Unit 2: Add focused reducer regression tests**\n\n**Goal:** Lock the intended root-list behavior so future TODO projection work\ndoes not regress the sidebar.\n\n**Files:**\n- Modify: `lib/crates/fabro-store/src/run_state.rs`\n\n**Approach:**\n- Extend the existing `todo_reducer` module rather than creating a new test\n file.\n- Add a test helper or local event setup that sets\n `event.event.parent_session_id = Some(parent_session_id.to_string())` for\n child-session events.\n- Add one regression test that reproduces the failing sequence:\n root OpenAI creates list, child OpenAI creates a different list on the same\n stage, root OpenAI completes its items. Assert the final projection is the\n root list and all root statuses are completed.\n- Add one test proving child OpenAI events alone do not create a stage TODO\n projection.\n- Add one test proving Anthropic child-session task events still project.\n\n**Verification:**\n- `cargo nextest run -p fabro-store todo_reducer`\n- `cargo +nightly-2026-04-14 fmt --check --all`\n\n## System-Wide Impact\n\n- **API compatibility:** No response schema changes. Existing consumers of\n `StageProjection.todos` continue to receive a single list.\n- **UI behavior:** The sidebar should show the root agent's TODO progress for\n the selected stage. 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"graph.goal": "---\ntitle: fix: Prefer root stage TODO projection\ntype: fix\nstatus: active\ndate: 2026-05-24\n---\n\n# fix: Prefer Root Stage TODO Projection\n\n## Overview\n\nFix stage TODO projection so `StageProjection.todos` represents the selected\nstage agent's root session plan. Today a child OpenAI session can emit its own\n`todo.created` events on the same `stage_id`, replacing the root list and\ncausing later root `todo.updated` completions to be ignored. The visible\nsymptom is an agent sidebar showing a stale child TODO list such as `0/3`\ncompleted even though the root stage plan completed.\n\n## Problem Frame\n\nOpenAI `update_plan` lists are scoped per agent session as\n`openai_plan:<session_id>`. A stage may contain both the root agent session and\nchild/subagent sessions. `StageProjection` currently has only one\n`todos: Option<TodoListProjection>`, so the reducer must choose which list is\nthe stage-level list. The stage sidebar is a stage-agent summary, so it should\nshow the root stage session's list rather than whichever session most recently\ncreated todos.\n\n## Requirements Trace\n\n- R1. Root OpenAI plan TODOs must remain the projected `stage.todos` list even\n when child OpenAI sessions emit TODO events on the same stage.\n- R2. Later root OpenAI `todo.updated` and `todo.deleted` events must continue\n to apply after child OpenAI TODO events are observed.\n- R3. Child OpenAI TODO lists must not create, replace, or mutate\n `StageProjection.todos`.\n- R4. Anthropic task projection must remain unchanged because Anthropic task\n lists are intentionally scoped to the root session and shared across\n subagents.\n- R5. Do not change public API shapes, generated API types, or frontend\n rendering code for this fix.\n\n## Scope Boundaries\n\n- Do not add a multi-list TODO projection in this change.\n- Do not expose child/subagent TODO lists in the sidebar in this change.\n- Do not change `TodoListProjection`, `StageProjection`, or OpenAPI schemas.\n- Do not change event serialization, event names, or the agent `update_plan`\n tool behavior.\n\n## Context & Research\n\n### Relevant Code and Patterns\n\n- `lib/crates/fabro-agent/src/todo_tools.rs` scopes OpenAI plans by\n `session_id`, producing `openai_plan:<session_id>`.\n- `lib/crates/fabro-types/src/run_event/mod.rs` already carries\n `session_id` and `parent_session_id` on event envelopes.\n- `lib/crates/fabro-store/src/run_state.rs` owns the persisted-event reducer\n that updates `StageProjection.todos` from `todo.created`, `todo.updated`,\n and `todo.deleted`.\n- The existing `todo_reducer` test module in `run_state.rs` is the right place\n for focused regression coverage.\n- `apps/fabro-web/app/routes/run-stages.tsx` and\n `apps/fabro-web/app/components/stage-insights-sidebar.tsx` already render\n `stage.todos`; no UI change is needed if the projection is corrected.\n\n### Observed Failing Case\n\nFor run `01KSBT48J14ZMK9HQN48SVMG3T`, stage `simplify_gpt@1` had:\n\n- Root list `openai_plan:2f4458b9-1128-4a96-8dfa-bff4b73b9c33`: five root\n todos, all completed by later `todo.updated` events.\n- Child list `openai_plan:a09b9432-823d-4068-91fa-5c6185578e8e`: three child\n todos, created with `parent_session_id` set and never updated.\n\nThe child `todo.created` events replaced `stage.todos`, so the sidebar showed\nthe child list as `0/3` even after the root list completed.\n\n## Key Technical Decisions\n\n- Use `parent_session_id` as the root-vs-child signal for OpenAI plan\n projection. A root stage session has `parent_session_id == None`; child\n sessions have `parent_session_id != None`.\n- Ignore child OpenAI plan events for `StageProjection.todos`. This preserves\n the current single-list schema while making the selected list match the\n stage sidebar's meaning.\n- Keep Anthropic task projection unchanged. Anthropic tasks use\n `anthropic_tasks:<root_session_id>`, so child-session envelopes should still\n be allowed to update the shared root task list.\n- Treat legacy OpenAI events without `parent_session_id` as root-compatible for\n backwards compatibility.\n\n## Implementation Units\n\n- [ ] **Unit 1: Add reducer policy for projectable stage TODO events**\n\n**Goal:** Make the reducer distinguish root OpenAI plan events from child\nOpenAI plan events before mutating `stage.todos`.\n\n**Files:**\n- Modify: `lib/crates/fabro-store/src/run_state.rs`\n\n**Approach:**\n- Add a small helper near the TODO reducer functions, for example\n `should_project_stage_todo_event(stored: &RunEvent, list_kind:\n TodoListKind) -> bool`.\n- Return `false` only when `list_kind == TodoListKind::OpenAiPlan` and\n `stored.parent_session_id.is_some()`.\n- Return `true` for root OpenAI events and all Anthropic task events.\n- Call this helper in the `EventBody::TodoCreated`,\n `EventBody::TodoUpdated`, and `EventBody::TodoDeleted` match arms before\n resolving or mutating the stage projection.\n- Leave `apply_todo_created`, `apply_todo_updated`, and\n `apply_todo_deleted` focused on list mutation once the caller has decided\n the event is projectable.\n\n**Test scenarios:**\n- Root OpenAI events with no `parent_session_id` still create and update\n `stage.todos`.\n- Child OpenAI events with `parent_session_id` do not create `stage.todos`\n when no root list exists.\n- Child OpenAI events do not replace an existing root OpenAI list.\n- Root OpenAI updates still apply after ignored child OpenAI events.\n\n- [ ] **Unit 2: Add focused reducer regression tests**\n\n**Goal:** Lock the intended root-list behavior so future TODO projection work\ndoes not regress the sidebar.\n\n**Files:**\n- Modify: `lib/crates/fabro-store/src/run_state.rs`\n\n**Approach:**\n- Extend the existing `todo_reducer` module rather than creating a new test\n file.\n- Add a test helper or local event setup that sets\n `event.event.parent_session_id = Some(parent_session_id.to_string())` for\n child-session events.\n- Add one regression test that reproduces the failing sequence:\n root OpenAI creates list, child OpenAI creates a different list on the same\n stage, root OpenAI completes its items. Assert the final projection is the\n root list and all root statuses are completed.\n- Add one test proving child OpenAI events alone do not create a stage TODO\n projection.\n- Add one test proving Anthropic child-session task events still project.\n\n**Verification:**\n- `cargo nextest run -p fabro-store todo_reducer`\n- `cargo +nightly-2026-04-14 fmt --check --all`\n\n## System-Wide Impact\n\n- **API compatibility:** No response schema changes. Existing consumers of\n `StageProjection.todos` continue to receive a single list.\n- **UI behavior:** The sidebar should show the root agent's TODO progress for\n the selected stage. Child OpenAI session plans remain available only in the\n raw event stream for now.\n- **Historical runs:** Replaying existing event logs should produce corrected\n projections because the decision uses envelope fields already persisted on\n child events.\n- **Future extensibility:** If child/subagent TODO display is needed later,\n add a multi-list projection separately rather than overloading\n `stage.todos`.\n\n## Risks & Mitigations\n\n| Risk | Mitigation |\n|------|------------|\n| Some legacy child OpenAI events lack `parent_session_id` and still project as root | Accept this for backwards compatibility; only events with explicit child-session evidence are filtered. |\n| Anthropic child task updates could be accidentally filtered | Gate only `TodoListKind::OpenAiPlan`; add a regression test for `TodoListKind::AnthropicTasks`. |\n| Root list replacement semantics become ambiguous if a root stage emits multiple OpenAI list IDs | Preserve current root replacement behavior; the fix only prevents child lists from replacing root lists. |\n\n## Assumptions\n\n- `parent_session_id == None` is the canonical signal for the root stage agent\n session in stored event envelopes.\n- Child OpenAI TODO lists are not part of the current stage sidebar contract.\n- The correct near-term fix is projection selection, not a frontend workaround\n or a schema expansion.\n",
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"graph.goal": "---\ntitle: fix: Prefer root stage TODO projection\ntype: fix\nstatus: active\ndate: 2026-05-24\n---\n\n# fix: Prefer Root Stage TODO Projection\n\n## Overview\n\nFix stage TODO projection so `StageProjection.todos` represents the selected\nstage agent's root session plan. Today a child OpenAI session can emit its own\n`todo.created` events on the same `stage_id`, replacing the root list and\ncausing later root `todo.updated` completions to be ignored. The visible\nsymptom is an agent sidebar showing a stale child TODO list such as `0/3`\ncompleted even though the root stage plan completed.\n\n## Problem Frame\n\nOpenAI `update_plan` lists are scoped per agent session as\n`openai_plan:<session_id>`. A stage may contain both the root agent session and\nchild/subagent sessions. `StageProjection` currently has only one\n`todos: Option<TodoListProjection>`, so the reducer must choose which list is\nthe stage-level list. The stage sidebar is a stage-agent summary, so it should\nshow the root stage session's list rather than whichever session most recently\ncreated todos.\n\n## Requirements Trace\n\n- R1. Root OpenAI plan TODOs must remain the projected `stage.todos` list even\n when child OpenAI sessions emit TODO events on the same stage.\n- R2. Later root OpenAI `todo.updated` and `todo.deleted` events must continue\n to apply after child OpenAI TODO events are observed.\n- R3. Child OpenAI TODO lists must not create, replace, or mutate\n `StageProjection.todos`.\n- R4. Anthropic task projection must remain unchanged because Anthropic task\n lists are intentionally scoped to the root session and shared across\n subagents.\n- R5. Do not change public API shapes, generated API types, or frontend\n rendering code for this fix.\n\n## Scope Boundaries\n\n- Do not add a multi-list TODO projection in this change.\n- Do not expose child/subagent TODO lists in the sidebar in this change.\n- Do not change `TodoListProjection`, `StageProjection`, or OpenAPI schemas.\n- Do not change event serialization, event names, or the agent `update_plan`\n tool behavior.\n\n## Context & Research\n\n### Relevant Code and Patterns\n\n- `lib/crates/fabro-agent/src/todo_tools.rs` scopes OpenAI plans by\n `session_id`, producing `openai_plan:<session_id>`.\n- `lib/crates/fabro-types/src/run_event/mod.rs` already carries\n `session_id` and `parent_session_id` on event envelopes.\n- `lib/crates/fabro-store/src/run_state.rs` owns the persisted-event reducer\n that updates `StageProjection.todos` from `todo.created`, `todo.updated`,\n and `todo.deleted`.\n- The existing `todo_reducer` test module in `run_state.rs` is the right place\n for focused regression coverage.\n- `apps/fabro-web/app/routes/run-stages.tsx` and\n `apps/fabro-web/app/components/stage-insights-sidebar.tsx` already render\n `stage.todos`; no UI change is needed if the projection is corrected.\n\n### Observed Failing Case\n\nFor run `01KSBT48J14ZMK9HQN48SVMG3T`, stage `simplify_gpt@1` had:\n\n- Root list `openai_plan:2f4458b9-1128-4a96-8dfa-bff4b73b9c33`: five root\n todos, all completed by later `todo.updated` events.\n- Child list `openai_plan:a09b9432-823d-4068-91fa-5c6185578e8e`: three child\n todos, created with `parent_session_id` set and never updated.\n\nThe child `todo.created` events replaced `stage.todos`, so the sidebar showed\nthe child list as `0/3` even after the root list completed.\n\n## Key Technical Decisions\n\n- Use `parent_session_id` as the root-vs-child signal for OpenAI plan\n projection. A root stage session has `parent_session_id == None`; child\n sessions have `parent_session_id != None`.\n- Ignore child OpenAI plan events for `StageProjection.todos`. This preserves\n the current single-list schema while making the selected list match the\n stage sidebar's meaning.\n- Keep Anthropic task projection unchanged. Anthropic tasks use\n `anthropic_tasks:<root_session_id>`, so child-session envelopes should still\n be allowed to update the shared root task list.\n- Treat legacy OpenAI events without `parent_session_id` as root-compatible for\n backwards compatibility.\n\n## Implementation Units\n\n- [ ] **Unit 1: Add reducer policy for projectable stage TODO events**\n\n**Goal:** Make the reducer distinguish root OpenAI plan events from child\nOpenAI plan events before mutating `stage.todos`.\n\n**Files:**\n- Modify: `lib/crates/fabro-store/src/run_state.rs`\n\n**Approach:**\n- Add a small helper near the TODO reducer functions, for example\n `should_project_stage_todo_event(stored: &RunEvent, list_kind:\n TodoListKind) -> bool`.\n- Return `false` only when `list_kind == TodoListKind::OpenAiPlan` and\n `stored.parent_session_id.is_some()`.\n- Return `true` for root OpenAI events and all Anthropic task events.\n- Call this helper in the `EventBody::TodoCreated`,\n `EventBody::TodoUpdated`, and `EventBody::TodoDeleted` match arms before\n resolving or mutating the stage projection.\n- Leave `apply_todo_created`, `apply_todo_updated`, and\n `apply_todo_deleted` focused on list mutation once the caller has decided\n the event is projectable.\n\n**Test scenarios:**\n- Root OpenAI events with no `parent_session_id` still create and update\n `stage.todos`.\n- Child OpenAI events with `parent_session_id` do not create `stage.todos`\n when no root list exists.\n- Child OpenAI events do not replace an existing root OpenAI list.\n- Root OpenAI updates still apply after ignored child OpenAI events.\n\n- [ ] **Unit 2: Add focused reducer regression tests**\n\n**Goal:** Lock the intended root-list behavior so future TODO projection work\ndoes not regress the sidebar.\n\n**Files:**\n- Modify: `lib/crates/fabro-store/src/run_state.rs`\n\n**Approach:**\n- Extend the existing `todo_reducer` module rather than creating a new test\n file.\n- Add a test helper or local event setup that sets\n `event.event.parent_session_id = Some(parent_session_id.to_string())` for\n child-session events.\n- Add one regression test that reproduces the failing sequence:\n root OpenAI creates list, child OpenAI creates a different list on the same\n stage, root OpenAI completes its items. Assert the final projection is the\n root list and all root statuses are completed.\n- Add one test proving child OpenAI events alone do not create a stage TODO\n projection.\n- Add one test proving Anthropic child-session task events still project.\n\n**Verification:**\n- `cargo nextest run -p fabro-store todo_reducer`\n- `cargo +nightly-2026-04-14 fmt --check --all`\n\n## System-Wide Impact\n\n- **API compatibility:** No response schema changes. Existing consumers of\n `StageProjection.todos` continue to receive a single list.\n- **UI behavior:** The sidebar should show the root agent's TODO progress for\n the selected stage. Child OpenAI session plans remain available only in the\n raw event stream for now.\n- **Historical runs:** Replaying existing event logs should produce corrected\n projections because the decision uses envelope fields already persisted on\n child events.\n- **Future extensibility:** If child/subagent TODO display is needed later,\n add a multi-list projection separately rather than overloading\n `stage.todos`.\n\n## Risks & Mitigations\n\n| Risk | Mitigation |\n|------|------------|\n| Some legacy child OpenAI events lack `parent_session_id` and still project as root | Accept this for backwards compatibility; only events with explicit child-session evidence are filtered. |\n| Anthropic child task updates could be accidentally filtered | Gate only `TodoListKind::OpenAiPlan`; add a regression test for `TodoListKind::AnthropicTasks`. |\n| Root list replacement semantics become ambiguous if a root stage emits multiple OpenAI list IDs | Preserve current root replacement behavior; the fix only prevents child lists from replacing root lists. |\n\n## Assumptions\n\n- `parent_session_id == None` is the canonical signal for the root stage agent\n session in stored event envelopes.\n- Child OpenAI TODO lists are not part of the current stage sidebar contract.\n- The correct near-term fix is projection selection, not a frontend workaround\n or a schema expansion.\n",
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"patch": "diff --git a/lib/crates/fabro-api/tests/provider_round_trip.rs b/lib/crates/fabro-api/tests/provider_round_trip.rs\nindex dc2d75aa2..4df297434 100644\n--- a/lib/crates/fabro-api/tests/provider_round_trip.rs\n+++ b/lib/crates/fabro-api/tests/provider_round_trip.rs\n@@ -12,16 +12,17 @@ fn provider_reuses_canonical_type() {\n #[test]\n fn provider_json_matches_openapi_shape() {\n let provider = Provider {\n- id: ProviderId::anthropic(),\n- display_name: \"Anthropic\".to_string(),\n- adapter: AdapterKind::Anthropic,\n- base_url: Some(\"https://api.anthropic.test/v1\".to_string()),\n- api_key_url: Some(\"https://console.anthropic.com/settings/keys\".to_string()),\n- priority: 100,\n- aliases: vec![\"claude\".to_string()],\n- model_count: 7,\n- default_model: Some(\"claude-opus-4-7\".to_string()),\n- configured: true,\n+ id: ProviderId::anthropic(),\n+ display_name: \"Anthropic\".to_string(),\n+ adapter: AdapterKind::Anthropic,\n+ base_url: Some(\"https://api.anthropic.test/v1\".to_string()),\n+ api_key_url: Some(\"https://console.anthropic.com/settings/keys\".to_string()),\n+ priority: 100,\n+ aliases: vec![\"claude\".to_string()],\n+ model_count: 7,\n+ default_model: Some(\"claude-opus-4-7\".to_string()),\n+ configured: true,\n+ expected_secret_name: Some(\"ANTHROPIC_API_KEY\".to_string()),\n };\n \n let json = serde_json::to_value(&provider).unwrap();\n@@ -38,6 +39,7 @@ fn provider_json_matches_openapi_shape() {\n assert_eq!(json[\"model_count\"], 7);\n assert_eq!(json[\"default_model\"], \"claude-opus-4-7\");\n assert_eq!(json[\"configured\"], true);\n+ assert_eq!(json[\"expected_secret_name\"], \"ANTHROPIC_API_KEY\");\n \n let round_trip: ApiProvider = serde_json::from_value(json).unwrap();\n assert_eq!(round_trip, provider);\n@@ -49,16 +51,17 @@ fn provider_omits_optional_fields_when_absent() {\n // declares: the four `skip_serializing_if` fields drop out entirely, while\n // the six required fields always serialize.\n let provider = Provider {\n- id: ProviderId::new(\"custom\"),\n- display_name: \"Custom\".to_string(),\n- adapter: AdapterKind::OpenAiCompatible,\n- base_url: None,\n- api_key_url: None,\n- priority: 0,\n- aliases: Vec::new(),\n- model_count: 0,\n- default_model: None,\n- configured: false,\n+ id: ProviderId::new(\"custom\"),\n+ display_name: \"Custom\".to_string(),\n+ adapter: AdapterKind::OpenAiCompatible,\n+ base_url: None,\n+ api_key_url: None,\n+ priority: 0,\n+ aliases: Vec::new(),\n+ model_count: 0,\n+ default_model: None,\n+ configured: false,\n+ expected_secret_name: None,\n };\n \n let json = serde_json::to_value(&provider).unwrap();\n@@ -67,6 +70,7 @@ fn provider_omits_optional_fields_when_absent() {\n assert!(!object.contains_key(\"api_key_url\"));\n assert!(!object.contains_key(\"aliases\"));\n assert!(!object.contains_key(\"default_model\"));\n+ assert!(!object.contains_key(\"expected_secret_name\"));\n assert!(object.contains_key(\"id\"));\n assert!(object.contains_key(\"display_name\"));\n assert!(object.contains_key(\"adapter\"));\n",
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"graph.goal": "---\ntitle: fix: Prefer root stage TODO projection\ntype: fix\nstatus: active\ndate: 2026-05-24\n---\n\n# fix: Prefer Root Stage TODO Projection\n\n## Overview\n\nFix stage TODO projection so `StageProjection.todos` represents the selected\nstage agent's root session plan. Today a child OpenAI session can emit its own\n`todo.created` events on the same `stage_id`, replacing the root list and\ncausing later root `todo.updated` completions to be ignored. The visible\nsymptom is an agent sidebar showing a stale child TODO list such as `0/3`\ncompleted even though the root stage plan completed.\n\n## Problem Frame\n\nOpenAI `update_plan` lists are scoped per agent session as\n`openai_plan:<session_id>`. A stage may contain both the root agent session and\nchild/subagent sessions. `StageProjection` currently has only one\n`todos: Option<TodoListProjection>`, so the reducer must choose which list is\nthe stage-level list. The stage sidebar is a stage-agent summary, so it should\nshow the root stage session's list rather than whichever session most recently\ncreated todos.\n\n## Requirements Trace\n\n- R1. Root OpenAI plan TODOs must remain the projected `stage.todos` list even\n when child OpenAI sessions emit TODO events on the same stage.\n- R2. Later root OpenAI `todo.updated` and `todo.deleted` events must continue\n to apply after child OpenAI TODO events are observed.\n- R3. Child OpenAI TODO lists must not create, replace, or mutate\n `StageProjection.todos`.\n- R4. Anthropic task projection must remain unchanged because Anthropic task\n lists are intentionally scoped to the root session and shared across\n subagents.\n- R5. Do not change public API shapes, generated API types, or frontend\n rendering code for this fix.\n\n## Scope Boundaries\n\n- Do not add a multi-list TODO projection in this change.\n- Do not expose child/subagent TODO lists in the sidebar in this change.\n- Do not change `TodoListProjection`, `StageProjection`, or OpenAPI schemas.\n- Do not change event serialization, event names, or the agent `update_plan`\n tool behavior.\n\n## Context & Research\n\n### Relevant Code and Patterns\n\n- `lib/crates/fabro-agent/src/todo_tools.rs` scopes OpenAI plans by\n `session_id`, producing `openai_plan:<session_id>`.\n- `lib/crates/fabro-types/src/run_event/mod.rs` already carries\n `session_id` and `parent_session_id` on event envelopes.\n- `lib/crates/fabro-store/src/run_state.rs` owns the persisted-event reducer\n that updates `StageProjection.todos` from `todo.created`, `todo.updated`,\n and `todo.deleted`.\n- The existing `todo_reducer` test module in `run_state.rs` is the right place\n for focused regression coverage.\n- `apps/fabro-web/app/routes/run-stages.tsx` and\n `apps/fabro-web/app/components/stage-insights-sidebar.tsx` already render\n `stage.todos`; no UI change is needed if the projection is corrected.\n\n### Observed Failing Case\n\nFor run `01KSBT48J14ZMK9HQN48SVMG3T`, stage `simplify_gpt@1` had:\n\n- Root list `openai_plan:2f4458b9-1128-4a96-8dfa-bff4b73b9c33`: five root\n todos, all completed by later `todo.updated` events.\n- Child list `openai_plan:a09b9432-823d-4068-91fa-5c6185578e8e`: three child\n todos, created with `parent_session_id` set and never updated.\n\nThe child `todo.created` events replaced `stage.todos`, so the sidebar showed\nthe child list as `0/3` even after the root list completed.\n\n## Key Technical Decisions\n\n- Use `parent_session_id` as the root-vs-child signal for OpenAI plan\n projection. A root stage session has `parent_session_id == None`; child\n sessions have `parent_session_id != None`.\n- Ignore child OpenAI plan events for `StageProjection.todos`. This preserves\n the current single-list schema while making the selected list match the\n stage sidebar's meaning.\n- Keep Anthropic task projection unchanged. Anthropic tasks use\n `anthropic_tasks:<root_session_id>`, so child-session envelopes should still\n be allowed to update the shared root task list.\n- Treat legacy OpenAI events without `parent_session_id` as root-compatible for\n backwards compatibility.\n\n## Implementation Units\n\n- [ ] **Unit 1: Add reducer policy for projectable stage TODO events**\n\n**Goal:** Make the reducer distinguish root OpenAI plan events from child\nOpenAI plan events before mutating `stage.todos`.\n\n**Files:**\n- Modify: `lib/crates/fabro-store/src/run_state.rs`\n\n**Approach:**\n- Add a small helper near the TODO reducer functions, for example\n `should_project_stage_todo_event(stored: &RunEvent, list_kind:\n TodoListKind) -> bool`.\n- Return `false` only when `list_kind == TodoListKind::OpenAiPlan` and\n `stored.parent_session_id.is_some()`.\n- Return `true` for root OpenAI events and all Anthropic task events.\n- Call this helper in the `EventBody::TodoCreated`,\n `EventBody::TodoUpdated`, and `EventBody::TodoDeleted` match arms before\n resolving or mutating the stage projection.\n- Leave `apply_todo_created`, `apply_todo_updated`, and\n `apply_todo_deleted` focused on list mutation once the caller has decided\n the event is projectable.\n\n**Test scenarios:**\n- Root OpenAI events with no `parent_session_id` still create and update\n `stage.todos`.\n- Child OpenAI events with `parent_session_id` do not create `stage.todos`\n when no root list exists.\n- Child OpenAI events do not replace an existing root OpenAI list.\n- Root OpenAI updates still apply after ignored child OpenAI events.\n\n- [ ] **Unit 2: Add focused reducer regression tests**\n\n**Goal:** Lock the intended root-list behavior so future TODO projection work\ndoes not regress the sidebar.\n\n**Files:**\n- Modify: `lib/crates/fabro-store/src/run_state.rs`\n\n**Approach:**\n- Extend the existing `todo_reducer` module rather than creating a new test\n file.\n- Add a test helper or local event setup that sets\n `event.event.parent_session_id = Some(parent_session_id.to_string())` for\n child-session events.\n- Add one regression test that reproduces the failing sequence:\n root OpenAI creates list, child OpenAI creates a different list on the same\n stage, root OpenAI completes its items. Assert the final projection is the\n root list and all root statuses are completed.\n- Add one test proving child OpenAI events alone do not create a stage TODO\n projection.\n- Add one test proving Anthropic child-session task events still project.\n\n**Verification:**\n- `cargo nextest run -p fabro-store todo_reducer`\n- `cargo +nightly-2026-04-14 fmt --check --all`\n\n## System-Wide Impact\n\n- **API compatibility:** No response schema changes. Existing consumers of\n `StageProjection.todos` continue to receive a single list.\n- **UI behavior:** The sidebar should show the root agent's TODO progress for\n the selected stage. Child OpenAI session plans remain available only in the\n raw event stream for now.\n- **Historical runs:** Replaying existing event logs should produce corrected\n projections because the decision uses envelope fields already persisted on\n child events.\n- **Future extensibility:** If child/subagent TODO display is needed later,\n add a multi-list projection separately rather than overloading\n `stage.todos`.\n\n## Risks & Mitigations\n\n| Risk | Mitigation |\n|------|------------|\n| Some legacy child OpenAI events lack `parent_session_id` and still project as root | Accept this for backwards compatibility; only events with explicit child-session evidence are filtered. |\n| Anthropic child task updates could be accidentally filtered | Gate only `TodoListKind::OpenAiPlan`; add a regression test for `TodoListKind::AnthropicTasks`. |\n| Root list replacement semantics become ambiguous if a root stage emits multiple OpenAI list IDs | Preserve current root replacement behavior; the fix only prevents child lists from replacing root lists. |\n\n## Assumptions\n\n- `parent_session_id == None` is the canonical signal for the root stage agent\n session in stored event envelopes.\n- Child OpenAI TODO lists are not part of the current stage sidebar contract.\n- The correct near-term fix is projection selection, not a frontend workaround\n or a schema expansion.\n",
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"response.implement": "Implemented the root-stage TODO projection fix in `lib/crates/fabro-store/src/run_state.rs`.\n\nWhat changed:\n- Added `should_project_stage_todo_event(...)`.\n- The reducer now ignores `TodoCreated`, `TodoUpdated`, and `TodoDeleted` events when:\n - `list_kind == TodoListKind::OpenAiPlan`\n - and `parent_session_id.is_some()`\n- Anthropic task events remain projectable even from child-session envelopes.\n- No API, schema, event serialization, or frontend changes.\n\nAdded focused regression coverage:\n- Root OpenAI plan remains projected after child OpenAI plan events.\n- Child OpenAI plan events alone do not create `stage.todos`.\n- Anthropic child-session task events still project and update.\n\nTDD verification:\n- Red: `cargo nextest run -p fabro-store todo_reducer` failed as expected before the fix.\n- Green:\n - `cargo nextest run -p fabro-store todo_reducer` ✅\n - `cargo +nightly-2026-04-14 fmt --check --all` ✅\n\nOnly changed file:\n- `lib/crates/fabro-store/src/run_state.rs`",
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"graph.goal": "---\ntitle: fix: Prefer root stage TODO projection\ntype: fix\nstatus: active\ndate: 2026-05-24\n---\n\n# fix: Prefer Root Stage TODO Projection\n\n## Overview\n\nFix stage TODO projection so `StageProjection.todos` represents the selected\nstage agent's root session plan. Today a child OpenAI session can emit its own\n`todo.created` events on the same `stage_id`, replacing the root list and\ncausing later root `todo.updated` completions to be ignored. The visible\nsymptom is an agent sidebar showing a stale child TODO list such as `0/3`\ncompleted even though the root stage plan completed.\n\n## Problem Frame\n\nOpenAI `update_plan` lists are scoped per agent session as\n`openai_plan:<session_id>`. A stage may contain both the root agent session and\nchild/subagent sessions. `StageProjection` currently has only one\n`todos: Option<TodoListProjection>`, so the reducer must choose which list is\nthe stage-level list. The stage sidebar is a stage-agent summary, so it should\nshow the root stage session's list rather than whichever session most recently\ncreated todos.\n\n## Requirements Trace\n\n- R1. Root OpenAI plan TODOs must remain the projected `stage.todos` list even\n when child OpenAI sessions emit TODO events on the same stage.\n- R2. Later root OpenAI `todo.updated` and `todo.deleted` events must continue\n to apply after child OpenAI TODO events are observed.\n- R3. Child OpenAI TODO lists must not create, replace, or mutate\n `StageProjection.todos`.\n- R4. Anthropic task projection must remain unchanged because Anthropic task\n lists are intentionally scoped to the root session and shared across\n subagents.\n- R5. Do not change public API shapes, generated API types, or frontend\n rendering code for this fix.\n\n## Scope Boundaries\n\n- Do not add a multi-list TODO projection in this change.\n- Do not expose child/subagent TODO lists in the sidebar in this change.\n- Do not change `TodoListProjection`, `StageProjection`, or OpenAPI schemas.\n- Do not change event serialization, event names, or the agent `update_plan`\n tool behavior.\n\n## Context & Research\n\n### Relevant Code and Patterns\n\n- `lib/crates/fabro-agent/src/todo_tools.rs` scopes OpenAI plans by\n `session_id`, producing `openai_plan:<session_id>`.\n- `lib/crates/fabro-types/src/run_event/mod.rs` already carries\n `session_id` and `parent_session_id` on event envelopes.\n- `lib/crates/fabro-store/src/run_state.rs` owns the persisted-event reducer\n that updates `StageProjection.todos` from `todo.created`, `todo.updated`,\n and `todo.deleted`.\n- The existing `todo_reducer` test module in `run_state.rs` is the right place\n for focused regression coverage.\n- `apps/fabro-web/app/routes/run-stages.tsx` and\n `apps/fabro-web/app/components/stage-insights-sidebar.tsx` already render\n `stage.todos`; no UI change is needed if the projection is corrected.\n\n### Observed Failing Case\n\nFor run `01KSBT48J14ZMK9HQN48SVMG3T`, stage `simplify_gpt@1` had:\n\n- Root list `openai_plan:2f4458b9-1128-4a96-8dfa-bff4b73b9c33`: five root\n todos, all completed by later `todo.updated` events.\n- Child list `openai_plan:a09b9432-823d-4068-91fa-5c6185578e8e`: three child\n todos, created with `parent_session_id` set and never updated.\n\nThe child `todo.created` events replaced `stage.todos`, so the sidebar showed\nthe child list as `0/3` even after the root list completed.\n\n## Key Technical Decisions\n\n- Use `parent_session_id` as the root-vs-child signal for OpenAI plan\n projection. A root stage session has `parent_session_id == None`; child\n sessions have `parent_session_id != None`.\n- Ignore child OpenAI plan events for `StageProjection.todos`. This preserves\n the current single-list schema while making the selected list match the\n stage sidebar's meaning.\n- Keep Anthropic task projection unchanged. Anthropic tasks use\n `anthropic_tasks:<root_session_id>`, so child-session envelopes should still\n be allowed to update the shared root task list.\n- Treat legacy OpenAI events without `parent_session_id` as root-compatible for\n backwards compatibility.\n\n## Implementation Units\n\n- [ ] **Unit 1: Add reducer policy for projectable stage TODO events**\n\n**Goal:** Make the reducer distinguish root OpenAI plan events from child\nOpenAI plan events before mutating `stage.todos`.\n\n**Files:**\n- Modify: `lib/crates/fabro-store/src/run_state.rs`\n\n**Approach:**\n- Add a small helper near the TODO reducer functions, for example\n `should_project_stage_todo_event(stored: &RunEvent, list_kind:\n TodoListKind) -> bool`.\n- Return `false` only when `list_kind == TodoListKind::OpenAiPlan` and\n `stored.parent_session_id.is_some()`.\n- Return `true` for root OpenAI events and all Anthropic task events.\n- Call this helper in the `EventBody::TodoCreated`,\n `EventBody::TodoUpdated`, and `EventBody::TodoDeleted` match arms before\n resolving or mutating the stage projection.\n- Leave `apply_todo_created`, `apply_todo_updated`, and\n `apply_todo_deleted` focused on list mutation once the caller has decided\n the event is projectable.\n\n**Test scenarios:**\n- Root OpenAI events with no `parent_session_id` still create and update\n `stage.todos`.\n- Child OpenAI events with `parent_session_id` do not create `stage.todos`\n when no root list exists.\n- Child OpenAI events do not replace an existing root OpenAI list.\n- Root OpenAI updates still apply after ignored child OpenAI events.\n\n- [ ] **Unit 2: Add focused reducer regression tests**\n\n**Goal:** Lock the intended root-list behavior so future TODO projection work\ndoes not regress the sidebar.\n\n**Files:**\n- Modify: `lib/crates/fabro-store/src/run_state.rs`\n\n**Approach:**\n- Extend the existing `todo_reducer` module rather than creating a new test\n file.\n- Add a test helper or local event setup that sets\n `event.event.parent_session_id = Some(parent_session_id.to_string())` for\n child-session events.\n- Add one regression test that reproduces the failing sequence:\n root OpenAI creates list, child OpenAI creates a different list on the same\n stage, root OpenAI completes its items. Assert the final projection is the\n root list and all root statuses are completed.\n- Add one test proving child OpenAI events alone do not create a stage TODO\n projection.\n- Add one test proving Anthropic child-session task events still project.\n\n**Verification:**\n- `cargo nextest run -p fabro-store todo_reducer`\n- `cargo +nightly-2026-04-14 fmt --check --all`\n\n## System-Wide Impact\n\n- **API compatibility:** No response schema changes. Existing consumers of\n `StageProjection.todos` continue to receive a single list.\n- **UI behavior:** The sidebar should show the root agent's TODO progress for\n the selected stage. Child OpenAI session plans remain available only in the\n raw event stream for now.\n- **Historical runs:** Replaying existing event logs should produce corrected\n projections because the decision uses envelope fields already persisted on\n child events.\n- **Future extensibility:** If child/subagent TODO display is needed later,\n add a multi-list projection separately rather than overloading\n `stage.todos`.\n\n## Risks & Mitigations\n\n| Risk | Mitigation |\n|------|------------|\n| Some legacy child OpenAI events lack `parent_session_id` and still project as root | Accept this for backwards compatibility; only events with explicit child-session evidence are filtered. |\n| Anthropic child task updates could be accidentally filtered | Gate only `TodoListKind::OpenAiPlan`; add a regression test for `TodoListKind::AnthropicTasks`. |\n| Root list replacement semantics become ambiguous if a root stage emits multiple OpenAI list IDs | Preserve current root replacement behavior; the fix only prevents child lists from replacing root lists. |\n\n## Assumptions\n\n- `parent_session_id == None` is the canonical signal for the root stage agent\n session in stored event envelopes.\n- Child OpenAI TODO lists are not part of the current stage sidebar contract.\n- The correct near-term fix is projection selection, not a frontend workaround\n or a schema expansion.\n",
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"patch": "diff --git a/lib/crates/fabro-store/src/run_state.rs b/lib/crates/fabro-store/src/run_state.rs\nindex c7578f696..8b438b39a 100644\n--- a/lib/crates/fabro-store/src/run_state.rs\n+++ b/lib/crates/fabro-store/src/run_state.rs\n@@ -15,7 +15,7 @@ use fabro_types::{\n RunControlAction, RunDiff, RunEvent, RunId, RunLifecycle, RunLinks, RunModel, RunOrigin,\n RunProjection, RunSandbox, RunSandboxRuntime, RunSize, RunSpec, RunStatus, RunTimestamps,\n SandboxProvider, StageCompletion, StageHandler, StageId, StageModelUsage, StageOutcome,\n- StageProjection, StageState, StartRecord, SubAgentProjection, SubAgentStatus,\n+ StageProjection, StageState, StartRecord, SubAgentProjection, SubAgentStatus, TodoListKind,\n TodoListProjection, TodoProjection, WorkflowRef, first_event_seq,\n };\n use fabro_util::error::render_compact_with_causes;\n@@ -484,18 +484,27 @@ impl RunProjectionReducer for RunProjection {\n stage.parallel_results = Some(parallel_results);\n }\n EventBody::TodoCreated(props) => {\n+ if !should_project_stage_todo_event(stored, props.list_kind) {\n+ return Ok(());\n+ }\n let Some(stage) = stage_at_stored_or_current_visit(self, stored, event.seq) else {\n return Ok(());\n };\n apply_todo_created(stage, props);\n }\n EventBody::TodoUpdated(props) => {\n+ if !should_project_stage_todo_event(stored, props.list_kind) {\n+ return Ok(());\n+ }\n let Some(stage) = stage_at_stored_or_current_visit(self, stored, event.seq) else {\n return Ok(());\n };\n apply_todo_updated(stage, props);\n }\n EventBody::TodoDeleted(props) => {\n+ if !should_project_stage_todo_event(stored, props.list_kind) {\n+ return Ok(());\n+ }\n let Some(stage) = stage_at_stored_or_current_visit(self, stored, event.seq) else {\n return Ok(());\n };\n@@ -621,6 +630,10 @@ impl RunProjectionReducer for RunProjection {\n }\n }\n \n+fn should_project_stage_todo_event(stored: &RunEvent, list_kind: TodoListKind) -> bool {\n+ !matches!(list_kind, TodoListKind::OpenAiPlan) || stored.parent_session_id.is_none()\n+}\n+\n fn apply_todo_created(stage: &mut StageProjection, props: &TodoCreatedProps) {\n if stage\n .todos\n@@ -3932,6 +3945,13 @@ mod tests {\n .expect(\"stage todos present\")\n }\n \n+ fn child_stage_event(seq: u32, body: EventBody, stage_id: StageId) -> EventEnvelope {\n+ let mut event = test_stage_event(seq, body, stage_id);\n+ event.event.session_id = Some(format!(\"child-session-{seq}\"));\n+ event.event.parent_session_id = Some(\"root-session\".to_string());\n+ event\n+ }\n+\n fn created(\n list: &str,\n list_kind: TodoListKind,\n@@ -4091,6 +4111,163 @@ mod tests {\n assert_eq!(stage_todos(&state, &claude).items[0].subject, \"claude task\");\n }\n \n+ #[test]\n+ fn root_openai_plan_remains_projected_after_child_plan_events() {\n+ let mut state = initialized_projection();\n+ let stage_id = stage_id();\n+ let root_list = \"openai_plan:root_session\";\n+ let child_list = \"openai_plan:child_session\";\n+ state\n+ .apply_event(&test_stage_event(\n+ 1,\n+ created(\n+ root_list,\n+ TodoListKind::OpenAiPlan,\n+ \"root-a\",\n+ 0,\n+ \"root first\",\n+ ),\n+ stage_id.clone(),\n+ ))\n+ .unwrap();\n+ state\n+ .apply_event(&test_stage_event(\n+ 2,\n+ created(\n+ root_list,\n+ TodoListKind::OpenAiPlan,\n+ \"root-b\",\n+ 1,\n+ \"root second\",\n+ ),\n+ stage_id.clone(),\n+ ))\n+ .unwrap();\n+ state\n+ .apply_event(&child_stage_event(\n+ 3,\n+ created(\n+ child_list,\n+ TodoListKind::OpenAiPlan,\n+ \"child-a\",\n+ 0,\n+ \"child first\",\n+ ),\n+ stage_id.clone(),\n+ ))\n+ .unwrap();\n+ state\n+ .apply_event(&child_stage_event(\n+ 4,\n+ created(\n+ child_list,\n+ TodoListKind::OpenAiPlan,\n+ \"child-b\",\n+ 1,\n+ \"child second\",\n+ ),\n+ stage_id.clone(),\n+ ))\n+ .unwrap();\n+ state\n+ .apply_event(&test_stage_event(\n+ 5,\n+ updated_status(\n+ root_list,\n+ TodoListKind::OpenAiPlan,\n+ \"root-a\",\n+ TodoStatus::Completed,\n+ ),\n+ stage_id.clone(),\n+ ))\n+ .unwrap();\n+ state\n+ .apply_event(&test_stage_event(\n+ 6,\n+ updated_status(\n+ root_list,\n+ TodoListKind::OpenAiPlan,\n+ \"root-b\",\n+ TodoStatus::Completed,\n+ ),\n+ stage_id.clone(),\n+ ))\n+ .unwrap();\n+\n+ let projection = stage_todos(&state, &stage_id);\n+ assert_eq!(projection.list_id, root_list);\n+ assert_eq!(projection.kind, TodoListKind::OpenAiPlan);\n+ assert_eq!(projection.items.len(), 2);\n+ assert_eq!(projection.items[0].id, \"root-a\");\n+ assert_eq!(projection.items[0].status, TodoStatus::Completed);\n+ assert_eq!(projection.items[1].id, \"root-b\");\n+ assert_eq!(projection.items[1].status, TodoStatus::Completed);\n+ }\n+\n+ #[test]\n+ fn child_openai_plan_events_do_not_create_stage_todos() {\n+ let mut state = initialized_projection();\n+ let stage_id = stage_id();\n+ state\n+ .apply_event(&child_stage_event(\n+ 1,\n+ created(\n+ \"openai_plan:child_session\",\n+ TodoListKind::OpenAiPlan,\n+ \"child-a\",\n+ 0,\n+ \"child first\",\n+ ),\n+ stage_id.clone(),\n+ ))\n+ .unwrap();\n+\n+ assert!(\n+ state\n+ .stage(&stage_id)\n+ .is_none_or(|stage| stage.todos.is_none())\n+ );\n+ }\n+\n+ #[test]\n+ fn anthropic_child_session_task_events_still_project() {\n+ let mut state = initialized_projection();\n+ let stage_id = stage_id();\n+ let list = \"anthropic_tasks:root_session\";\n+ state\n+ .apply_event(&child_stage_event(\n+ 1,\n+ created(\n+ list,\n+ TodoListKind::AnthropicTasks,\n+ \"task-a\",\n+ 0,\n+ \"task first\",\n+ ),\n+ stage_id.clone(),\n+ ))\n+ .unwrap();\n+ state\n+ .apply_event(&child_stage_event(\n+ 2,\n+ updated_status(\n+ list,\n+ TodoListKind::AnthropicTasks,\n+ \"task-a\",\n+ TodoStatus::Completed,\n+ ),\n+ stage_id.clone(),\n+ ))\n+ .unwrap();\n+\n+ let projection = stage_todos(&state, &stage_id);\n+ assert_eq!(projection.list_id, list);\n+ assert_eq!(projection.kind, TodoListKind::AnthropicTasks);\n+ assert_eq!(projection.items.len(), 1);\n+ assert_eq!(projection.items[0].id, \"task-a\");\n+ assert_eq!(projection.items[0].status, TodoStatus::Completed);\n+ }\n+\n #[test]\n fn metadata_patch_merges_and_null_deletes() {\n let mut state = initialized_projection();\n",
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"response.simplify_opus": "All tests pass, fmt and clippy clean.\n\n## Summary\n\nThe diff was already small and well-scoped. Three review agents found no must-fix issues; the code matched surrounding patterns in the file.\n\nI made two focused quality improvements:\n\n1. **`should_project_stage_todo_event` clarity** (`run_state.rs`): Rewrote the predicate in the positive form (`is_child_openai_plan_event`) and added a doc comment explaining why OpenAI plan events from child sessions are filtered while Anthropic task events always project. The De Morgan inversion (`!matches!(...) || ...`) was hard to read without context.\n\n2. **Tightened test assertion**: Replaced `state.stage(&stage_id).is_none_or(|stage| stage.todos.is_none())` with an explicit `state.stage(&stage_id).expect(\"stage present\")` followed by `assert!(stage.todos.is_none())`, so a future regression that drops the stage entirely can't silently pass this test.\n\nFindings I intentionally skipped:\n- **Consolidating the three near-identical `TodoCreated/Updated/Deleted` arms**: every other reducer arm in this file uses the same inline `let Some(stage) = ... else { return Ok(()); };` pattern, so introducing a helper just for these three would diverge from the file's style.\n- **Promoting `is_root_session` to `RunEvent` or `is_session_scoped` to `TodoListKind`**: one call site each — premature.\n- **`child_stage_event` session_id stability and persistence-time filtering**: orthogonal to this fix's scope.\n\nVerified with `cargo nextest run -p fabro-store todo_reducer` (7 passed), `cargo +nightly-2026-04-14 fmt --check --all`, and `clippy -p fabro-store --all-targets -D warnings`.",
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"graph.goal": "---\ntitle: fix: Prefer root stage TODO projection\ntype: fix\nstatus: active\ndate: 2026-05-24\n---\n\n# fix: Prefer Root Stage TODO Projection\n\n## Overview\n\nFix stage TODO projection so `StageProjection.todos` represents the selected\nstage agent's root session plan. Today a child OpenAI session can emit its own\n`todo.created` events on the same `stage_id`, replacing the root list and\ncausing later root `todo.updated` completions to be ignored. The visible\nsymptom is an agent sidebar showing a stale child TODO list such as `0/3`\ncompleted even though the root stage plan completed.\n\n## Problem Frame\n\nOpenAI `update_plan` lists are scoped per agent session as\n`openai_plan:<session_id>`. A stage may contain both the root agent session and\nchild/subagent sessions. `StageProjection` currently has only one\n`todos: Option<TodoListProjection>`, so the reducer must choose which list is\nthe stage-level list. The stage sidebar is a stage-agent summary, so it should\nshow the root stage session's list rather than whichever session most recently\ncreated todos.\n\n## Requirements Trace\n\n- R1. Root OpenAI plan TODOs must remain the projected `stage.todos` list even\n when child OpenAI sessions emit TODO events on the same stage.\n- R2. Later root OpenAI `todo.updated` and `todo.deleted` events must continue\n to apply after child OpenAI TODO events are observed.\n- R3. Child OpenAI TODO lists must not create, replace, or mutate\n `StageProjection.todos`.\n- R4. Anthropic task projection must remain unchanged because Anthropic task\n lists are intentionally scoped to the root session and shared across\n subagents.\n- R5. Do not change public API shapes, generated API types, or frontend\n rendering code for this fix.\n\n## Scope Boundaries\n\n- Do not add a multi-list TODO projection in this change.\n- Do not expose child/subagent TODO lists in the sidebar in this change.\n- Do not change `TodoListProjection`, `StageProjection`, or OpenAPI schemas.\n- Do not change event serialization, event names, or the agent `update_plan`\n tool behavior.\n\n## Context & Research\n\n### Relevant Code and Patterns\n\n- `lib/crates/fabro-agent/src/todo_tools.rs` scopes OpenAI plans by\n `session_id`, producing `openai_plan:<session_id>`.\n- `lib/crates/fabro-types/src/run_event/mod.rs` already carries\n `session_id` and `parent_session_id` on event envelopes.\n- `lib/crates/fabro-store/src/run_state.rs` owns the persisted-event reducer\n that updates `StageProjection.todos` from `todo.created`, `todo.updated`,\n and `todo.deleted`.\n- The existing `todo_reducer` test module in `run_state.rs` is the right place\n for focused regression coverage.\n- `apps/fabro-web/app/routes/run-stages.tsx` and\n `apps/fabro-web/app/components/stage-insights-sidebar.tsx` already render\n `stage.todos`; no UI change is needed if the projection is corrected.\n\n### Observed Failing Case\n\nFor run `01KSBT48J14ZMK9HQN48SVMG3T`, stage `simplify_gpt@1` had:\n\n- Root list `openai_plan:2f4458b9-1128-4a96-8dfa-bff4b73b9c33`: five root\n todos, all completed by later `todo.updated` events.\n- Child list `openai_plan:a09b9432-823d-4068-91fa-5c6185578e8e`: three child\n todos, created with `parent_session_id` set and never updated.\n\nThe child `todo.created` events replaced `stage.todos`, so the sidebar showed\nthe child list as `0/3` even after the root list completed.\n\n## Key Technical Decisions\n\n- Use `parent_session_id` as the root-vs-child signal for OpenAI plan\n projection. A root stage session has `parent_session_id == None`; child\n sessions have `parent_session_id != None`.\n- Ignore child OpenAI plan events for `StageProjection.todos`. This preserves\n the current single-list schema while making the selected list match the\n stage sidebar's meaning.\n- Keep Anthropic task projection unchanged. Anthropic tasks use\n `anthropic_tasks:<root_session_id>`, so child-session envelopes should still\n be allowed to update the shared root task list.\n- Treat legacy OpenAI events without `parent_session_id` as root-compatible for\n backwards compatibility.\n\n## Implementation Units\n\n- [ ] **Unit 1: Add reducer policy for projectable stage TODO events**\n\n**Goal:** Make the reducer distinguish root OpenAI plan events from child\nOpenAI plan events before mutating `stage.todos`.\n\n**Files:**\n- Modify: `lib/crates/fabro-store/src/run_state.rs`\n\n**Approach:**\n- Add a small helper near the TODO reducer functions, for example\n `should_project_stage_todo_event(stored: &RunEvent, list_kind:\n TodoListKind) -> bool`.\n- Return `false` only when `list_kind == TodoListKind::OpenAiPlan` and\n `stored.parent_session_id.is_some()`.\n- Return `true` for root OpenAI events and all Anthropic task events.\n- Call this helper in the `EventBody::TodoCreated`,\n `EventBody::TodoUpdated`, and `EventBody::TodoDeleted` match arms before\n resolving or mutating the stage projection.\n- Leave `apply_todo_created`, `apply_todo_updated`, and\n `apply_todo_deleted` focused on list mutation once the caller has decided\n the event is projectable.\n\n**Test scenarios:**\n- Root OpenAI events with no `parent_session_id` still create and update\n `stage.todos`.\n- Child OpenAI events with `parent_session_id` do not create `stage.todos`\n when no root list exists.\n- Child OpenAI events do not replace an existing root OpenAI list.\n- Root OpenAI updates still apply after ignored child OpenAI events.\n\n- [ ] **Unit 2: Add focused reducer regression tests**\n\n**Goal:** Lock the intended root-list behavior so future TODO projection work\ndoes not regress the sidebar.\n\n**Files:**\n- Modify: `lib/crates/fabro-store/src/run_state.rs`\n\n**Approach:**\n- Extend the existing `todo_reducer` module rather than creating a new test\n file.\n- Add a test helper or local event setup that sets\n `event.event.parent_session_id = Some(parent_session_id.to_string())` for\n child-session events.\n- Add one regression test that reproduces the failing sequence:\n root OpenAI creates list, child OpenAI creates a different list on the same\n stage, root OpenAI completes its items. Assert the final projection is the\n root list and all root statuses are completed.\n- Add one test proving child OpenAI events alone do not create a stage TODO\n projection.\n- Add one test proving Anthropic child-session task events still project.\n\n**Verification:**\n- `cargo nextest run -p fabro-store todo_reducer`\n- `cargo +nightly-2026-04-14 fmt --check --all`\n\n## System-Wide Impact\n\n- **API compatibility:** No response schema changes. Existing consumers of\n `StageProjection.todos` continue to receive a single list.\n- **UI behavior:** The sidebar should show the root agent's TODO progress for\n the selected stage. Child OpenAI session plans remain available only in the\n raw event stream for now.\n- **Historical runs:** Replaying existing event logs should produce corrected\n projections because the decision uses envelope fields already persisted on\n child events.\n- **Future extensibility:** If child/subagent TODO display is needed later,\n add a multi-list projection separately rather than overloading\n `stage.todos`.\n\n## Risks & Mitigations\n\n| Risk | Mitigation |\n|------|------------|\n| Some legacy child OpenAI events lack `parent_session_id` and still project as root | Accept this for backwards compatibility; only events with explicit child-session evidence are filtered. |\n| Anthropic child task updates could be accidentally filtered | Gate only `TodoListKind::OpenAiPlan`; add a regression test for `TodoListKind::AnthropicTasks`. |\n| Root list replacement semantics become ambiguous if a root stage emits multiple OpenAI list IDs | Preserve current root replacement behavior; the fix only prevents child lists from replacing root lists. |\n\n## Assumptions\n\n- `parent_session_id == None` is the canonical signal for the root stage agent\n session in stored event envelopes.\n- Child OpenAI TODO lists are not part of the current stage sidebar contract.\n- The correct near-term fix is projection selection, not a frontend workaround\n or a schema expansion.\n",
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"response.simplify_opus": "All tests pass, fmt and clippy clean.\n\n## Summary\n\nThe diff was already small and well-scoped. Three review agents found no must-fix issues; the code matched surrounding patterns in the file.\n\nI made two focused quality improvements:\n\n1. **`should_project_stage_todo_event` clarity** (`run_state.rs`): Rewrote the predicate in the positive form (`is_child_openai_plan_event`) and added a doc comment explaining why OpenAI plan events from child sessions are filtered while Anthropic task events always project. The De Morgan inversion (`!matches!(...) || ...`) was hard to read without context.\n\n2. **Tightened test assertion**: Replaced `state.stage(&stage_id).is_none_or(|stage| stage.todos.is_none())` with an explicit `state.stage(&stage_id).expect(\"stage present\")` followed by `assert!(stage.todos.is_none())`, so a future regression that drops the stage entirely can't silently pass this test.\n\nFindings I intentionally skipped:\n- **Consolidating the three near-identical `TodoCreated/Updated/Deleted` arms**: every other reducer arm in this file uses the same inline `let Some(stage) = ... else { return Ok(()); };` pattern, so introducing a helper just for these three would diverge from the file's style.\n- **Promoting `is_root_session` to `RunEvent` or `is_session_scoped` to `TodoListKind`**: one call site each — premature.\n- **`child_stage_event` session_id stability and persistence-time filtering**: orthogonal to this fix's scope.\n\nVerified with `cargo nextest run -p fabro-store todo_reducer` (7 passed), `cargo +nightly-2026-04-14 fmt --check --all`, and `clippy -p fabro-store --all-targets -D warnings`.",
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"patch": "diff --git a/lib/crates/fabro-store/src/run_state.rs b/lib/crates/fabro-store/src/run_state.rs\nindex 8b438b39a..e624ddbfe 100644\n--- a/lib/crates/fabro-store/src/run_state.rs\n+++ b/lib/crates/fabro-store/src/run_state.rs\n@@ -630,8 +630,18 @@ impl RunProjectionReducer for RunProjection {\n }\n }\n \n+/// Decide whether a TODO event should mutate `StageProjection.todos`.\n+///\n+/// OpenAI plan lists are scoped per agent session (`openai_plan:<session_id>`),\n+/// so a child/subagent session emits its own list events on the same stage.\n+/// The stage sidebar represents the root stage agent, so we drop child OpenAI\n+/// plan events here to keep the projection on the root session's list.\n+/// Anthropic task lists are root-scoped (`anthropic_tasks:<root_session_id>`)\n+/// and intentionally shared with subagents, so they always project.\n fn should_project_stage_todo_event(stored: &RunEvent, list_kind: TodoListKind) -> bool {\n- !matches!(list_kind, TodoListKind::OpenAiPlan) || stored.parent_session_id.is_none()\n+ let is_child_openai_plan_event =\n+ matches!(list_kind, TodoListKind::OpenAiPlan) && stored.parent_session_id.is_some();\n+ !is_child_openai_plan_event\n }\n \n fn apply_todo_created(stage: &mut StageProjection, props: &TodoCreatedProps) {\n",
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"graph.goal": "---\ntitle: fix: Prefer root stage TODO projection\ntype: fix\nstatus: active\ndate: 2026-05-24\n---\n\n# fix: Prefer Root Stage TODO Projection\n\n## Overview\n\nFix stage TODO projection so `StageProjection.todos` represents the selected\nstage agent's root session plan. Today a child OpenAI session can emit its own\n`todo.created` events on the same `stage_id`, replacing the root list and\ncausing later root `todo.updated` completions to be ignored. The visible\nsymptom is an agent sidebar showing a stale child TODO list such as `0/3`\ncompleted even though the root stage plan completed.\n\n## Problem Frame\n\nOpenAI `update_plan` lists are scoped per agent session as\n`openai_plan:<session_id>`. A stage may contain both the root agent session and\nchild/subagent sessions. `StageProjection` currently has only one\n`todos: Option<TodoListProjection>`, so the reducer must choose which list is\nthe stage-level list. The stage sidebar is a stage-agent summary, so it should\nshow the root stage session's list rather than whichever session most recently\ncreated todos.\n\n## Requirements Trace\n\n- R1. Root OpenAI plan TODOs must remain the projected `stage.todos` list even\n when child OpenAI sessions emit TODO events on the same stage.\n- R2. Later root OpenAI `todo.updated` and `todo.deleted` events must continue\n to apply after child OpenAI TODO events are observed.\n- R3. Child OpenAI TODO lists must not create, replace, or mutate\n `StageProjection.todos`.\n- R4. Anthropic task projection must remain unchanged because Anthropic task\n lists are intentionally scoped to the root session and shared across\n subagents.\n- R5. Do not change public API shapes, generated API types, or frontend\n rendering code for this fix.\n\n## Scope Boundaries\n\n- Do not add a multi-list TODO projection in this change.\n- Do not expose child/subagent TODO lists in the sidebar in this change.\n- Do not change `TodoListProjection`, `StageProjection`, or OpenAPI schemas.\n- Do not change event serialization, event names, or the agent `update_plan`\n tool behavior.\n\n## Context & Research\n\n### Relevant Code and Patterns\n\n- `lib/crates/fabro-agent/src/todo_tools.rs` scopes OpenAI plans by\n `session_id`, producing `openai_plan:<session_id>`.\n- `lib/crates/fabro-types/src/run_event/mod.rs` already carries\n `session_id` and `parent_session_id` on event envelopes.\n- `lib/crates/fabro-store/src/run_state.rs` owns the persisted-event reducer\n that updates `StageProjection.todos` from `todo.created`, `todo.updated`,\n and `todo.deleted`.\n- The existing `todo_reducer` test module in `run_state.rs` is the right place\n for focused regression coverage.\n- `apps/fabro-web/app/routes/run-stages.tsx` and\n `apps/fabro-web/app/components/stage-insights-sidebar.tsx` already render\n `stage.todos`; no UI change is needed if the projection is corrected.\n\n### Observed Failing Case\n\nFor run `01KSBT48J14ZMK9HQN48SVMG3T`, stage `simplify_gpt@1` had:\n\n- Root list `openai_plan:2f4458b9-1128-4a96-8dfa-bff4b73b9c33`: five root\n todos, all completed by later `todo.updated` events.\n- Child list `openai_plan:a09b9432-823d-4068-91fa-5c6185578e8e`: three child\n todos, created with `parent_session_id` set and never updated.\n\nThe child `todo.created` events replaced `stage.todos`, so the sidebar showed\nthe child list as `0/3` even after the root list completed.\n\n## Key Technical Decisions\n\n- Use `parent_session_id` as the root-vs-child signal for OpenAI plan\n projection. A root stage session has `parent_session_id == None`; child\n sessions have `parent_session_id != None`.\n- Ignore child OpenAI plan events for `StageProjection.todos`. This preserves\n the current single-list schema while making the selected list match the\n stage sidebar's meaning.\n- Keep Anthropic task projection unchanged. Anthropic tasks use\n `anthropic_tasks:<root_session_id>`, so child-session envelopes should still\n be allowed to update the shared root task list.\n- Treat legacy OpenAI events without `parent_session_id` as root-compatible for\n backwards compatibility.\n\n## Implementation Units\n\n- [ ] **Unit 1: Add reducer policy for projectable stage TODO events**\n\n**Goal:** Make the reducer distinguish root OpenAI plan events from child\nOpenAI plan events before mutating `stage.todos`.\n\n**Files:**\n- Modify: `lib/crates/fabro-store/src/run_state.rs`\n\n**Approach:**\n- Add a small helper near the TODO reducer functions, for example\n `should_project_stage_todo_event(stored: &RunEvent, list_kind:\n TodoListKind) -> bool`.\n- Return `false` only when `list_kind == TodoListKind::OpenAiPlan` and\n `stored.parent_session_id.is_some()`.\n- Return `true` for root OpenAI events and all Anthropic task events.\n- Call this helper in the `EventBody::TodoCreated`,\n `EventBody::TodoUpdated`, and `EventBody::TodoDeleted` match arms before\n resolving or mutating the stage projection.\n- Leave `apply_todo_created`, `apply_todo_updated`, and\n `apply_todo_deleted` focused on list mutation once the caller has decided\n the event is projectable.\n\n**Test scenarios:**\n- Root OpenAI events with no `parent_session_id` still create and update\n `stage.todos`.\n- Child OpenAI events with `parent_session_id` do not create `stage.todos`\n when no root list exists.\n- Child OpenAI events do not replace an existing root OpenAI list.\n- Root OpenAI updates still apply after ignored child OpenAI events.\n\n- [ ] **Unit 2: Add focused reducer regression tests**\n\n**Goal:** Lock the intended root-list behavior so future TODO projection work\ndoes not regress the sidebar.\n\n**Files:**\n- Modify: `lib/crates/fabro-store/src/run_state.rs`\n\n**Approach:**\n- Extend the existing `todo_reducer` module rather than creating a new test\n file.\n- Add a test helper or local event setup that sets\n `event.event.parent_session_id = Some(parent_session_id.to_string())` for\n child-session events.\n- Add one regression test that reproduces the failing sequence:\n root OpenAI creates list, child OpenAI creates a different list on the same\n stage, root OpenAI completes its items. Assert the final projection is the\n root list and all root statuses are completed.\n- Add one test proving child OpenAI events alone do not create a stage TODO\n projection.\n- Add one test proving Anthropic child-session task events still project.\n\n**Verification:**\n- `cargo nextest run -p fabro-store todo_reducer`\n- `cargo +nightly-2026-04-14 fmt --check --all`\n\n## System-Wide Impact\n\n- **API compatibility:** No response schema changes. Existing consumers of\n `StageProjection.todos` continue to receive a single list.\n- **UI behavior:** The sidebar should show the root agent's TODO progress for\n the selected stage. Child OpenAI session plans remain available only in the\n raw event stream for now.\n- **Historical runs:** Replaying existing event logs should produce corrected\n projections because the decision uses envelope fields already persisted on\n child events.\n- **Future extensibility:** If child/subagent TODO display is needed later,\n add a multi-list projection separately rather than overloading\n `stage.todos`.\n\n## Risks & Mitigations\n\n| Risk | Mitigation |\n|------|------------|\n| Some legacy child OpenAI events lack `parent_session_id` and still project as root | Accept this for backwards compatibility; only events with explicit child-session evidence are filtered. |\n| Anthropic child task updates could be accidentally filtered | Gate only `TodoListKind::OpenAiPlan`; add a regression test for `TodoListKind::AnthropicTasks`. |\n| Root list replacement semantics become ambiguous if a root stage emits multiple OpenAI list IDs | Preserve current root replacement behavior; the fix only prevents child lists from replacing root lists. |\n\n## Assumptions\n\n- `parent_session_id == None` is the canonical signal for the root stage agent\n session in stored event envelopes.\n- Child OpenAI TODO lists are not part of the current stage sidebar contract.\n- The correct near-term fix is projection selection, not a frontend workaround\n or a schema expansion.\n",
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"response.implement": "Implemented the root-stage TODO projection fix in `lib/crates/fabro-store/src/run_state.rs`.\n\nWhat changed:\n- Added `should_project_stage_todo_event(...)`.\n- The reducer now ignores `TodoCreated`, `TodoUpdated`, and `TodoDeleted` events when:\n - `list_kind == TodoListKind::OpenAiPlan`\n - and `parent_session_id.is_some()`\n- Anthropic task events remain projectable even from child-session envelopes.\n- No API, schema, event serialization, or frontend changes.\n\nAdded focused regression coverage:\n- Root OpenAI plan remains projected after child OpenAI plan events.\n- Child OpenAI plan events alone do not create `stage.todos`.\n- Anthropic child-session task events still project and update.\n\nTDD verification:\n- Red: `cargo nextest run -p fabro-store todo_reducer` failed as expected before the fix.\n- Green:\n - `cargo nextest run -p fabro-store todo_reducer` ✅\n - `cargo +nightly-2026-04-14 fmt --check --all` ✅\n\nOnly changed file:\n- `lib/crates/fabro-store/src/run_state.rs`",
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"response.simplify_gpt": "Review/cleanup completed.\n\nChanged:\n- Fixed a stale test comment in `lib/crates/fabro-api/tests/provider_round_trip.rs`:\n - `four skip_serializing_if fields` → `five skip_serializing_if fields`\n\nNo code changes were needed for the TODO projection reducer; the implementation remains focused and matches the requested behavior.\n\nValidated with:\n- `cargo nextest run -p fabro-store todo_reducer` ✅\n- `cargo test -p fabro-api --test provider_round_trip` ✅\n- `cargo +nightly-2026-04-14 fmt --check --all` ✅\n\nWorking tree now has one local cleanup change:\n- `M lib/crates/fabro-api/tests/provider_round_trip.rs`"
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"task": "You are a code reuse reviewer. Review the following diff for opportunities to reuse existing code in the fabro repository.\n\nWorking directory: /home/daytona/workspace/fabro\n\nThe diff (added a `should_project_stage_todo_event` helper and 3 regression tests in `lib/crates/fabro-store/src/run_state.rs`):\n\n```diff\ndiff --git a/lib/crates/fabro-store/src/run_state.rs b/lib/crates/fabro-store/src/run_state.rs\nindex c7578f696..8b438b39a 100644\n--- a/lib/crates/fabro-store/src/run_state.rs\n+++ b/lib/crates/fabro-store/src/run_state.rs\n@@ -15,7 +15,7 @@ use fabro_types::{\n RunControlAction, RunDiff, RunEvent, RunId, RunLifecycle, RunLinks, RunModel, RunOrigin,\n RunProjection, RunSandbox, RunSandboxRuntime, RunSize, RunSpec, RunStatus, RunTimestamps,\n SandboxProvider, StageCompletion, StageHandler, StageId, StageModelUsage, StageOutcome,\n- StageProjection, StageState, StartRecord, SubAgentProjection, SubAgentStatus,\n+ StageProjection, StageState, StartRecord, SubAgentProjection, SubAgentStatus, TodoListKind,\n TodoListProjection, TodoProjection, WorkflowRef, first_event_seq,\n };\n use fabro_util::error::render_compact_with_causes;\n@@ -484,18 +484,27 @@ impl RunProjectionReducer for RunProjection {\n stage.parallel_results = Some(parallel_results);\n }\n EventBody::TodoCreated(props) => {\n+ if !should_project_stage_todo_event(stored, props.list_kind) {\n+ return Ok(());\n+ }\n ... (same pattern for TodoUpdated, TodoDeleted)\n }\n ...\n+fn should_project_stage_todo_event(stored: &RunEvent, list_kind: TodoListKind) -> bool {\n+ !matches!(list_kind, TodoListKind::OpenAiPlan) || stored.parent_session_id.is_none()\n+}\n```\n\nPlus 3 new tests in the `todo_reducer` test module using a new `child_stage_event` helper.\n\nTasks:\n1. Search for any existing helpers that detect root vs. child session (e.g. functions checking `parent_session_id`).\n2. Search for existing test helpers that build child-session event envelopes.\n3. Search for any existing logic that decides whether a TODO event applies to a stage.\n4. Use Grep on: `parent_session_id`, `is_root_session`, `child_session`, `TodoListKind::OpenAiPlan`, `child_stage_event`, etc.\n5. Check `lib/crates/fabro-store/src/run_state.rs` test module above the changes (around line 3900+) to see test helper patterns.\n\nReport findings as concise bullets. Just findings, no editing.",
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"task": "You are a code quality reviewer. Review this diff for hacky patterns.\n\nWorking directory: /home/daytona/workspace/fabro\n\nThe change in `lib/crates/fabro-store/src/run_state.rs`:\n\n1. Adds a helper:\n```rust\nfn should_project_stage_todo_event(stored: &RunEvent, list_kind: TodoListKind) -> bool {\n !matches!(list_kind, TodoListKind::OpenAiPlan) || stored.parent_session_id.is_none()\n}\n```\n\n2. Calls it in all three TodoCreated/TodoUpdated/TodoDeleted match arms in `RunProjectionReducer::apply_event`:\n```rust\nEventBody::TodoCreated(props) => {\n if !should_project_stage_todo_event(stored, props.list_kind) {\n return Ok(());\n }\n let Some(stage) = stage_at_stored_or_current_visit(self, stored, event.seq) else {\n return Ok(());\n };\n apply_todo_created(stage, props);\n}\n// ... same for TodoUpdated, TodoDeleted\n```\n\n3. Adds a test helper and three tests in the existing `todo_reducer` module:\n```rust\nfn child_stage_event(seq: u32, body: EventBody, stage_id: StageId) -> EventEnvelope {\n let mut event = test_stage_event(seq, body, stage_id);\n event.event.session_id = Some(format!(\"child-session-{seq}\"));\n event.event.parent_session_id = Some(\"root-session\".to_string());\n event\n}\n```\n\nPlus three tests covering: root preserved after child events; child-only doesn't create stage todos; Anthropic child still projects.\n\nRead the file at `lib/crates/fabro-store/src/run_state.rs` (relevant sections around lines 470-635 for the reducer code and around lines 3900-4270 for tests) to understand the surrounding patterns.\n\nLook for:\n1. Redundant state or duplicated logic\n2. Parameter sprawl\n3. Copy-paste with slight variation (3 nearly-identical match arms - is there a better way?)\n4. Leaky abstractions (does `should_project_stage_todo_event` belong with the apply_todo_* helpers? Is `list_kind` plus envelope the right signature?)\n5. Stringly-typed code\n6. The test helper `child_stage_event` parameter naming and reuse of `test_stage_event`\n7. Whether `!matches!(...) || ...` is clearest expression vs `match` or explicit `if`\n8. Whether the three early-return guards in the match arms could be unified\n\nReport findings as concise bullets. Just findings, no editing.",
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