feat: add workflow error reporting and filtering

[michaelva]

Summary

• Add history_format query parameters for flexible workflow history retrieval
• Add has_reported_errors field to WorkflowRun type to track workflows with reported problems (TemporalReportedProblems)
• Add has_reported_errors filter parameter to ListWorkflowRunsPayload for filtering workflows by error state
• Implement "Has Reported Errors" filter in UI with Yes/No select options
• Add boolean conversion in filter handler for proper API parameter handling
• Revert badge color changes from PR fix: resolve streaming message rendering issues #821 to use semantic color approach
• Convert timestamp fields from Unix timestamps (seconds) to ISO 8601 strings (with millisecond precision)

Timestamp Format Change

BREAKING CHANGE: All timestamp fields in workflow types now use ISO 8601 strings (with millisecond precision) instead of Unix timestamp numbers (in seconds).

Before: "started_at": 1678886400 (Unix timestamp in seconds)
After: "started_at": "2023-03-15T12:00:00.000Z" (ISO 8601 string with millisecond precision)

Changed Types:

• WorkflowRun.started_at: number (seconds) → string (ISO 8601 with ms)
• WorkflowRun.closed_at: number (seconds) → string (ISO 8601 with ms)
• WorkflowRunEvent.event_time: number | null (seconds) → string | null (ISO 8601 with ms)
• WorkflowTask.scheduled: number | null (seconds) → string | null (ISO 8601 with ms)
• WorkflowTask.started: number | null (seconds) → string | null (ISO 8601 with ms)
• WorkflowTask.completed: number | null (seconds) → string | null (ISO 8601 with ms)
• WorkflowRunWithDetails.pendingActivities[].lastStartedTime: number (seconds) → string (ISO 8601 with ms)
• PendingActivity.lastStartedTime: number | null (seconds) → string | null (ISO 8601 with ms)

packages/common/src/store/workflow.ts:

• Updated all timestamp field types to use string instead of number
• Added PendingActivity type export for type consistency

Modified Files

• packages/common/src/store/workflow.ts:
  • Added has_reported_errors field to types
  • Updated timestamp types from number to string for ISO 8601 format
  • Updated PendingActivity.lastStartedTime type
• packages/client/src/store/WorkflowsApi.ts: Updated API client to handle new field
• packages/ui/src/core/components/Badge.tsx: Reverted to semantic color text approach
• packages/ui/src/features/facets/WorkflowExecutionsFacetsNav.tsx: Added "Has Reported Errors" filter

Test Plan

• Verify timestamp fields return ISO 8601 strings
• Verify timestamps have millisecond precision
• Verify filter appears in workflow executions page
• Test filtering workflows with/without errors
• Verify badge colors display correctly in light and dark modes
• Test filter combinations with other filters
• Verify date displays and calculations work with ISO strings

🤖 Generated with Claude Code

[Copilot]

Pull request overview

This PR adds workflow error reporting and filtering capabilities, along with a breaking change to timestamp formats. The main purpose is to enable users to filter workflows based on whether they have reported errors, while also standardizing timestamp representations across the codebase.

Changes:

• Added has_reported_errors field and filter parameter to enable filtering workflows by error state
• Converted all timestamp fields from Unix timestamps (seconds) to ISO 8601 strings with millisecond precision (breaking change)
• Added flexible history format query parameters for workflow history retrieval
• Reverted badge colors to use semantic color approach

Reviewed changes

Copilot reviewed 4 out of 4 changed files in this pull request and generated 4 comments.

File	Description
packages/ui/src/features/facets/WorkflowExecutionsFacetsNav.tsx	Implements "Has Reported Errors" filter UI with Yes/No options and boolean conversion logic
packages/ui/src/core/components/Badge.tsx	Reverts badge color styling to semantic text color classes and updates import formatting
packages/common/src/store/workflow.ts	Adds has_reported_errors field, converts timestamp types to strings, adds new type definitions for history formats and task types
packages/client/src/store/WorkflowsApi.ts	Updates getRunDetails method to support flexible history format options

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[Copilot]

The event_time field type changed from number | null to string | null, but the original type allowed number (non-null timestamps). The new type only allows null or string, which means non-null numeric timestamps are no longer supported. If events can have non-null timestamps, this should be string rather than string | null, or the migration path for existing numeric values needs clarification.

Suggested change

	event_time: string | null;
	event_time: string | number | null;