fix(activity): keep unsuccessful tool labels neutral

[waleedlatif1]

Summary

• Keep unsuccessful tool activity labels neutral in inline headers and expanded history.
• Normalize historical outcome prefixes without changing execution status, actionable errors, or stopped/skipped labels.

Type of Change

• Bug fix

Testing

852 focused tests passed, including rendered activity across all agent types. App type-check, lint, all 46 repository audits, block registry validation, and docs manifest checks passed.

Checklist

• Code follows project style guidelines
• Self-reviewed my changes
• Tests added/updated and passing
• No new warnings introduced
• I confirm that I have read and agree to the terms outlined in the Contributor License Agreement (CLA)

[vercel]

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1 Skipped Deployment

Project	Deployment	Actions	Updated
docs	Skipped		Sep 17, 2026 11:33pm UTC

[cubic-dev-ai]

No issues found across 7 files

Confidence score: 5/5

• Automated review surfaced no issues in the provided summaries.
• No files require special attention.

_{Re-trigger cubic}

[greptile-apps]

Confidence Score: 5/5

The PR appears safe to merge; the label normalization is consistently applied and covered without changing execution state or actionable error handling.

Summary

This PR changes unsuccessful tool activity labels from failure-prefixed wording to neutral action descriptions while preserving stopped and skipped outcomes.

• Adds normalization for historical leading outcome prefixes.
• Applies neutral labels consistently to inline activity, grouped summaries, and expanded history.
• Updates focused tests across tool-display and agent activity rendering.

_{Reviews (1) · Last reviewed commit: "fix(activity): keep unsuccessful tool la..."}