6b556ea873 fix(site): default agent logs tab to failed script, else All Logs (#25442)
> 🤖 This PR was modified by Coder Agents on behalf of Jake Howell.

The agent logs tab was snapping to **Startup Script** whenever
`getAgentHealthIssues` returned _any_ issue, including non-script issues
like:

- agent `status` of `connecting`, `timeout`, or `disconnected`
- lifecycle `shutting_down`, `shutdown_error`, or `shutdown_timeout`
- any script with status `timed_out`, `exit_failure`, or
`pipes_left_open`

So users routinely landed on a filtered Startup Script view (even
mid-connect) and had to click back to **All Logs** to see the full
picture.

### Change

- Default to **All Logs** on mount.
- Once logs stream in, if any script has actually failed _and_ its
source has rendered log entries, auto-select that script's tab. The
visibility check is the same one the tab list uses, so we never point
`selectedLogTab` at a tab that isn't rendered.
- A ref ensures the auto-select fires at most once and never overrides a
manual tab change by the user.
- The failure predicate (`exit_code` truthy or `status` set and not
`"ok"`) is extracted into an `isScriptFailed` helper so the auto-select
and the per-tab error indicator stay aligned.

### Behavior matrix

| Agent state | Before | After |
| ------------------------------------------------------ |
--------------- | ------------------------------ |
| Healthy, scripts running normally | All Logs | All Logs |
| `connecting` / `timeout` / `disconnected` | Startup Script | All Logs
|
| `shutting_down` / `shutdown_error` | Startup Script | All Logs |
| Startup Script failed, has logs | Startup Script | Startup Script |
| Non-startup script failed, has logs (e.g. install) | Startup Script |
The failed script's tab |
| Failed script with **no logs**, other sources have logs| Startup
Script (broken: tab not rendered) | All Logs |

### Test coverage

Four `play` functions on `AgentRow.stories.tsx`, each pinned to a
hardcoded tab name so a predicate regression can't silently pass:

- **`StartError`** — failed script with logs is auto-selected.
- **`StartErrorWithoutFailedSourceLogs`** — failed script with no logs
keeps All Logs active; we never point at an invisible tab.
- **`ConnectingWithStartupLogs`** — connecting agent with no script
failure stays on All Logs (locks in the bug fix for connection-only
issues).
- **`NonStartupScriptError`** — only a non-startup script fails (Startup
Script is OK); the auto-select tracks the failure, not position or
display name.

Each play function was verified to actually run by deliberately failing
the assertion once and confirming the test errored.

<details>
<summary>Decision log</summary>

The shape evolved during review:

1. First pass: collapse to `useState("all")`. Reviewer noted this lost
the auto-jump for legitimate failures.
2. Second pass: `useState(failedSourceId ?? "all")`. Codex flagged that
`failedSourceId` could point to a tab with no rendered entries, breaking
the Logs panel.
3. Final pass (this PR): `useState("all")` + `useEffect` + ref.
Auto-jump only fires once, only when the failed source has rendered
logs, and never overrides a manual selection.

Deferred from coder-agents-review feedback:
- **DEREM-5**: `agent.log_sources.find(...)` can disagree with the tab
bar's sort order when multiple non-startup scripts fail concurrently.
Low probability, one click to recover. Worth a follow-up if it becomes a
real complaint.

</details>

### Verification

- `pnpm check` (biome) — clean
- `pnpm lint:types` (tsc) — clean
- `pnpm vitest run --project "storybook (chromium)"
src/modules/resources/AgentRow` — 28/28 passed

---------

Co-authored-by: Atif Ali <atif@coder.com>
Co-authored-by: Jeremy Ruppel <jeremy.ruppel@gmail.com>
2026-06-04 19:13:54 +05:00
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