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https://github.com/fabro-sh/fabro.git
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651eae6b34
## Summary
Extends the Slack integration to post `run.started`, `run.completed`,
and `run.failed` notifications, configured per-run or per-workflow
through `[run.notifications]` rather than server config. Interview
behavior is unchanged and keeps its own state.
### What changed and why
**`SlackService` is now started whenever Slack credentials are
present**, regardless of whether `default_channel` is set. Previously,
the service required `default_channel` to initialize, which blocked
lifecycle notifications for users who have no interview default.
`default_channel` is now `Option<String>` and is only consulted in the
`InterviewStarted` path.
**`handle_event` receives the full `EventEnvelope` and `AppState`**
instead of just the `RunEvent`. Lifecycle handling needs to read the
cached run projection (for `[run.notifications]` routes) and scan prior
events (for PR details and the `run.started` event name), both of which
require `AppState`.
**Lifecycle path in `handle_event`** (`RunStarted` / `RunCompleted` /
`RunFailed`):
1. Reads the run projection to find enabled Slack routes whose `events`
list contains the current event name.
2. For terminal events, scans prior run events to recover
`PullRequestCreated` details and the `run.started` event name.
3. Resolves each route's channel (supporting `{{ env.VAR }}`
interpolation); warns and skips on missing/empty/unresolved channels
without affecting other routes.
4. Posts once per matching route concurrently via `join_all`; post
failures are logged, never propagated.
**`fabro-slack/src/blocks.rs`** adds `run_lifecycle_blocks` and helpers
separate from the interview builders:
- `RunLifecycleKind` uses `strum::IntoStaticStr` for the title string.
- All untrusted fields go through `escape_slack_controls` +
`truncate_to_limit`.
- `compact_duration` formats milliseconds into human-readable strings
(`1.2s`, `1m 5s`, `2h 30m`, …).
- PR line includes number, optional URL link, and optional HTML-escaped
title.
**`SlackClient::with_api_base_and_http`** is added as a test constructor
so server tests can point the client at a `MockServer` without going
through the normal builder path.
### Design decisions
- Lifecycle notifications are fire-and-forget and never touch
`posted_messages` or `thread_registry`, keeping interview and
notification state fully separate.
- `default_channel` is only used for interviews; lifecycle channel
always comes from `[run.notifications.<name>.slack].channel`. This
matches the goal of not promoting per-run config into server config.
- PR title is sourced only from prior `PullRequestCreated` events — no
GitHub API call is made at notification time. If only a
`PullRequestLink` is available in the projection, number and URL are
included but title is omitted.
- Workflow label resolution follows a priority chain: workflow name →
workflow slug → graph name → `run.started` event name → raw event name.
### Plan Summary
- Make `SlackService` start without `default_channel`; gate interview
path on `default_channel` presence.
- Add `handle_lifecycle_event` that filters routes, loads prior events,
builds blocks, resolves channels, and fans out posts.
- Add `run_lifecycle_blocks` Block Kit builder with escaping,
truncation, and `compact_duration`.
- Add server integration tests covering: started/completed/failed
posting, route filtering, missing/unresolved channel skipping, PR
details from prior events, and interview/lifecycle state isolation.
- Update public docs for Slack integration and run configuration.
### Fabro Details
<details>
<summary>Ran 9 stages in 53m 38s for $22.76</summary>
| Stage | Duration | Cost | Retries |
|---|---|---|---|
| start | 0s | – | 0 |
| toolchain | 2s | – | 0 |
| preflight_compile | 1m 58s | – | 0 |
| preflight_lint | 2m 11s | – | 0 |
| implement | 23m 3s | $14.18 | 0 |
| simplify_opus | 16m 37s | $6.36 | 0 |
| simplify_gpt | 5m 30s | $2.23 | 0 |
| verify | 3m 31s | – | 0 |
| fmt | 3s | – | 0 |
| **Total** | **53m 38s** | **$22.76** | **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 <bhelmkamp@users.noreply.github.com>
|
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|---|---|---|
| .. | ||
| checkpoints.mdx | ||
| context.mdx | ||
| devcontainers.mdx | ||
| environments.mdx | ||
| failures.mdx | ||
| observability.mdx | ||
| outcomes.mdx | ||
| run-configuration.mdx | ||