feat(deployments): show worker deployment connection status by default

[rossnelson]

Summary

• show the connection status by default: the Connection column on the
  deployment detail page, and the status inside the compute pill on the
  deployments list
• keep showConnectionStatus, so a consumer can still hide the status without
  a release of this package
• restore the Validate Connection guidance in the Pending tooltip
• report a check that does not finish as unknown, rather than as an invalid
  connection
• extend the unit and integration tests to cover the re-exposed path, which
  includes the detail row colspan

connection-status.mp4

Why

PR #3718 hid the connection status behind showConnectionStatus, which
defaults to false. The UI was correct. Two backend defects made the status show
a permanent Pending:

• validateValidateSpec rejected an empty ValidateSpec, so
  handleValidateSpec never ran.
  Fix: Allow validating the current spec via an empty ValidateSpec request temporal-auto-scaled-workers#99, merged 2026-07-25.
• version_workflow.go never sent syncSummary(), so an updated
  ComputeStatus never reached the deployment workflow that
  DescribeWorkerDeployment reads.
  Fix: Propagate ComputeStatus to deployment workflow temporal#11273, merged 2026-08-03.

Both fixes are merged.

Where the flip belongs

The prop defaults to false, and no route in this repo passes it, so the status
never appears. Three options:

1. Flip the default here. One change, one repo, and every consumer gets the
   status. This PR takes this option.
2. Pass true from each consumer. This needs a change in every consumer plus
   a package bump, and it leaves a dead prop here. It does not solve the staged
   rollout problem either, because a consumer also deploys everywhere at once.
3. Gate on a server capability. This is the only mechanism that lets an
   environment with the fixes show the status while an environment without them
   hides it, because the server reports its own support. No such capability
   exists. serverScaledDeployments is true with or without these fixes, so it
   selects the broken set rather than the fixed set. A capability that did track
   the fixes needs a change to temporalio/api and to the server, which takes
   longer than the rollout it would guard.

Option 1 with the prop kept gives the same rollback lever at lower cost: a
consumer can pass showConnectionStatus={false} if an environment turns out to
be behind.

Pending tooltip copy

Commit e6efe42 removed "or use Validate Connection to check now" because the
on-demand validation was a dry run. temporal-auto-scaled-workers#99 makes that
statement correct again. handleValidateSpec now writes the validation status
and signals the version workflow when the request carries no scaling group
changes, which is what the manual action sends. The row already refreshes after
a validation, so the badge changes in place.

The 6h claim stays. The default of
workercontroller.periodic_validation_interval_s is 21600 seconds.

Client contract

validateCurrentWorkerDeploymentVersionComputeConfig keeps its void return.
ValidateWorkerDeploymentVersionComputeConfigResponse is an empty message, so
the earlier { valid, message } shape never matched the server. The verdict
does not need that shape.

A check that does not finish is not a failed connection

The modal treated every error as a verdict:

const isValid = $derived(!result?.message);

A gateway timeout therefore read as "Connection is invalid", which is wrong. The
check never returned a result, so the connection state is unknown. The endpoint
runs a workflow update that calls a provider activity while the caller waits, so
a slow provider producing a timeout is an ordinary outcome, not an edge case.

The modal now has three states:

Outcome	Trigger	Modal
valid	200	Connection is valid
invalid	400 only	Connection is invalid, plus the server message
indeterminate	5xx, transport failure, 401, 403, 404, 429	Could not complete the check, status unknown

InvalidArgument, which maps to 400, is the only status the backend uses for a
verdict, so it is the only one treated as one. resolveValidationOutcome holds
this mapping so it is testable away from the component.

The row now refreshes for every outcome. A check that does not return to the
browser can still finish and persist a status.

Issue(s) closed

FE-191

Test plan

• pnpm lint: 0 errors
• pnpm check: 0 errors
• pnpm test -- --run: 3041 passed, 2 skipped
• pnpm test:integration: 317 passed, 1 skipped
• manual check against an environment carrying both backend fixes

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Project	Deployment	Actions	Updated (UTC)
holocene	Ready	Preview	Aug 25, 2026 7:01pm