fabro/lib/crates
fabro-sh-0530[bot] f81c5b96b1
Move agent state (todos, subagents, skills, MCP) onto StageProjection (#364)
## Summary

The `GET /runs/{id}` response now carries per-stage agent state — todos,
subagents, skills, and MCP server status — directly on each
`StageProjection`, unblocking the agent-stage sidebar without any new
endpoints.

## What changed and why

**`RunProjection.todos_by_list` removed.** The run-level map was the
only home for todos, but every list was already 1:1 with a stage (keyed
by `openai_plan:<session>` or `anthropic_tasks:<root_session>`). Moving
todos onto `StageProjection.todos: Option<TodoListProjection>`
eliminates the awkward cross-stage indirection with no loss of
expressiveness.

**Four new fields on `StageProjection`** (`todos`, `subagents`,
`skills`, `mcp_servers`) plus five new projection-side types
(`SubAgentProjection`, `SubAgentStatus`, `SkillsProjection`,
`ActivatedSkill`, `McpServerProjection`, `McpServerStatus`). All
colocated in `run_projection.rs`; no new modules. Four existing
event-payload types are reused directly (`TodoListProjection`,
`AgentSkillSummary`, `AgentSkillActivationSource`,
`AgentMcpToolSummary`) via `with_replacement(...)` in
`fabro-api/build.rs` so progenitor doesn't generate parallel `ApiFoo`
aliases.

**Reducer rerouting** (`run_state.rs`): `TodoCreated/Updated/Deleted`
now resolve the owning stage via the existing
`stage_at_stored_or_current_visit` helper and mutate `stage.todos`
directly. Eight new event arms handle
`AgentSubSpawned/Completed/Failed/Closed`,
`AgentSkillsDiscovered/Activated`, and `AgentMcpReady/Failed` using the
same `stage_at_stored_or_visit` pattern already used for other agent
events.

**Design decisions called out in the plan:**
- `SkillActivated` appends every activation (event-sourced replay
semantics); the UI can collapse if needed.
- `upsert_mcp_server` replaces by `server_name`, so a server that
recovers after a failure shows its final state.
- `SubAgentStatus` and `McpServerStatus` are projection-side enums,
intentionally distinct from the runtime per-process status types in
`fabro-agent`.

**OpenAPI + TS client** updated in lockstep: new schemas added,
`todos_by_list` removed from `RunProjection`, `bun run generate`
regenerated 20+ new model files.

### Plan Summary

- Extend `StageProjection` with `todos`, `subagents`, `skills`,
`mcp_servers` + supporting types in `run_projection.rs`
- Remove `RunProjection.todos_by_list` (no cross-stage use case)
- Reroute todo reducer handlers; add 8 new event arms for
subagent/skill/MCP events
- Wire reused types through `fabro-api/build.rs` `with_replacement`;
regenerate TS client
- Update all existing todo reducer tests to read from `stage.todos`; add
new test modules for subagent, skill, and MCP event families
- Update stale comment in `run-events.ts`


### Fabro Details

<details>
<summary>Ran 9 stages in 38m 52s for $13.29</summary>

| Stage | Duration | Cost | Retries |
|---|---|---|---|
| start | 0s | – | 0 |
| toolchain | 1s | – | 0 |
| preflight_compile | 2m 6s | – | 0 |
| preflight_lint | 2m 16s | – | 0 |
| implement | 16m 8s | $7.80 | 0 |
| simplify_opus | 10m 34s | $3.91 | 0 |
| simplify_gpt | 3m 23s | $1.58 | 0 |
| verify | 3m 51s | – | 0 |
| fmt | 2s | – | 0 |
| **Total** | **38m 52s** | **$13.29** | **0** |

</details>

<details>
<summary>Ran <code>ImplementPlan.fabro</code> (12 nodes and 15
edges)</summary>

```dot
digraph ImplementPlan {
    graph [
        goal="Implement and simplify",
        model_stylesheet="
            * { model: claude-opus-4-7; }
        "
    ]
    rankdir=LR

    start [shape=Mdiamond, label="Start"]
    exit  [shape=Msquare, label="Exit"]

    toolchain         [label="Toolchain", shape=parallelogram, script="command -v cargo >/dev/null || { curl --proto '=https' --tlsv1.2 -sSf https://sh.rustup.rs | sh -s -- -y && sudo ln -sf $HOME/.cargo/bin/* /usr/local/bin/; }; cargo --version 2>&1", max_retries=0]
    preflight_compile [label="Preflight Compile", shape=parallelogram, script="cargo check -q --workspace 2>&1", max_retries=0]
    preflight_lint    [label="Preflight Lint", shape=parallelogram, script="cargo +nightly-2026-04-14 clippy -q --workspace --all-targets -- -D warnings 2>&1", max_retries=0]
    fix_lints         [label="Fix Lints", prompt="The preflight lint step failed. Read the build output from context and fix all clippy lint warnings.", max_visits=3]
    implement         [label="Implement", prompt="Read the plan file referenced in the goal and implement every step. Make all the code changes described in the plan. Use red/green TDD.", model="gpt-55", reasoning_effort="xhigh"]
    simplify_opus     [label="Simplify (Opus)", prompt="@prompts/simplify.md"]
    simplify_gpt      [label="Simplify (GPT-55)", prompt="@prompts/simplify.md", model="gpt-55"]
    verify            [label="Verify", shape=parallelogram, script="cargo +nightly-2026-04-14 clippy -q --workspace --all-targets -- -D warnings 2>&1 && cargo nextest run --cargo-quiet --workspace --status-level fail 2>&1 && cargo dev docs refresh 2>&1 && cargo dev docs check 2>&1", goal_gate=true, retry_target="fixup"]
    fixup             [label="Fixup", prompt="The verify step failed. Read the build output from context and fix all clippy lint warnings, test failures, and generated docs errors.", max_visits=3]
    fmt               [label="Format", shape=parallelogram, script="cargo +nightly-2026-04-14 fmt --all 2>&1", max_retries=0]

    start -> toolchain
    toolchain -> preflight_compile [condition="outcome=succeeded"]
    toolchain -> exit
    preflight_compile -> preflight_lint [condition="outcome=succeeded"]
    preflight_compile -> exit
    preflight_lint -> implement [condition="outcome=succeeded"]
    preflight_lint -> fix_lints
    fix_lints -> preflight_lint
    implement -> simplify_opus -> simplify_gpt -> verify
    verify -> fmt   [condition="outcome=succeeded"]
    verify -> fixup
    fixup -> verify
    fmt -> exit
}

```

</details>

⚒️ Generated with [Fabro](https://fabro.sh)

---------

Co-authored-by: Fabro <noreply@fabro.sh>
Co-authored-by: Bryan Helmkamp <bryan@brynary.com>
2026-05-23 13:26:51 -04:00
..
build-support fix(build): refresh embedded git sha on branch commits 2026-05-09 14:10:04 -04:00
fabro-acp fix(workflow): capture configured artifacts once (#337) 2026-05-21 10:52:22 -04:00
fabro-agent Surface reasoning_effort + speed in stage badge end-to-end (#363) 2026-05-23 13:14:55 -04:00
fabro-api Move agent state (todos, subagents, skills, MCP) onto StageProjection (#364) 2026-05-23 13:26:51 -04:00
fabro-auth feat(workflow): enforce strict api/acp backends (#307) 2026-05-18 13:20:56 -04:00
fabro-checkpoint Make git metadata sandbox-native 2026-04-27 21:43:15 -07:00
fabro-cli Surface reasoning_effort + speed in stage badge end-to-end (#363) 2026-05-23 13:14:55 -04:00
fabro-client Stage-based pairing API and fabro_run_pair MCP tool (#344) 2026-05-21 21:57:55 -04:00
fabro-config Replace run-scoped sandbox config with named environments (#360) 2026-05-23 13:03:21 -04:00
fabro-core feat: Replace duration/elapsed fields with wall_time_ms and StageTiming (#343) 2026-05-21 21:06:40 -04:00
fabro-dev feat: add [run.agent] fabro_tools opt-in for worker run tools (#348) 2026-05-22 09:41:27 -04:00
fabro-devcontainer refactor(static): centralize env var names 2026-04-24 12:29:51 -04:00
fabro-dump Surface reasoning_effort + speed in stage badge end-to-end (#363) 2026-05-23 13:14:55 -04:00
fabro-github fix(github): refresh installation tokens during workflows 2026-05-06 07:15:18 -04:00
fabro-graphviz fix(graph): support dotted Fabro graph attributes (#324) 2026-05-20 09:31:08 -04:00
fabro-hooks Add event-sourced todo tools for OpenAI and Anthropic profiles (#353) 2026-05-22 13:44:42 -04:00
fabro-http refactor(static): centralize env var names 2026-04-24 12:29:51 -04:00
fabro-install Replace run-scoped sandbox config with named environments (#360) 2026-05-23 13:03:21 -04:00
fabro-interview Stage-based pairing API and fabro_run_pair MCP tool (#344) 2026-05-21 21:57:55 -04:00
fabro-llm feat(llm): add input token counting (#359) 2026-05-23 05:52:54 -04:00
fabro-macros refactor(dev): simplify generated docs tooling 2026-04-24 18:41:00 -04:00
fabro-manifest Replace run-scoped sandbox config with named environments (#360) 2026-05-23 13:03:21 -04:00
fabro-mcp Add agent context observability events (memory, skills, MCP tools) (#356) 2026-05-22 19:06:00 -04:00
fabro-mcp-server Add fabro_run_get read-only run inspection tool (#358) 2026-05-22 19:03:56 -04:00
fabro-model Compute LLM cost on-read for in-flight billing stages (#345) 2026-05-21 19:25:00 -04:00
fabro-oauth fix(error): preserve remaining error context 2026-05-02 10:51:15 -04:00
fabro-options-metadata refactor(dev): simplify generated docs tooling 2026-04-24 18:41:00 -04:00
fabro-proc refactor(static): centralize env var names 2026-04-24 12:29:51 -04:00
fabro-redact refactor(integrations): make chat integrations Slack-only 2026-05-09 11:43:16 -04:00
fabro-sandbox Replace run-scoped sandbox config with named environments (#360) 2026-05-23 13:03:21 -04:00
fabro-server Surface reasoning_effort + speed in stage badge end-to-end (#363) 2026-05-23 13:14:55 -04:00
fabro-slack Add Slack run lifecycle notifications via [run.notifications] (#365) 2026-05-23 13:07:42 -04:00
fabro-spa feat(dev): gitignore embedded spa assets 2026-04-26 21:31:11 -04:00
fabro-static refactor(llm): split provider identity from adapters (#280) 2026-05-16 13:13:41 -04:00
fabro-store Move agent state (todos, subagents, skills, MCP) onto StageProjection (#364) 2026-05-23 13:26:51 -04:00
fabro-telemetry refactor(workflow): remove retro stage (#230) 2026-05-09 10:18:20 -04:00
fabro-template feat(template): resolve template error locations (#333) 2026-05-20 20:15:04 -04:00
fabro-test feat(cli): add Fabro MCP server (#236) 2026-05-11 18:20:50 -04:00
fabro-tool Replace run-scoped sandbox config with named environments (#360) 2026-05-23 13:03:21 -04:00
fabro-tracker fix(github): refresh installation tokens during workflows 2026-05-06 07:15:18 -04:00
fabro-types Move agent state (todos, subagents, skills, MCP) onto StageProjection (#364) 2026-05-23 13:26:51 -04:00
fabro-util refactor(install): share persistence pipeline (#332) 2026-05-21 08:04:04 -04:00
fabro-validate fix(graph): support dotted Fabro graph attributes (#324) 2026-05-20 09:31:08 -04:00
fabro-vault refactor(auth): split credential sources and vault schemas (#306) 2026-05-18 11:07:42 -04:00
fabro-workflow Surface reasoning_effort + speed in stage badge end-to-end (#363) 2026-05-23 13:14:55 -04:00