Introduce a new API endpoint that provisions user accounts using a personal access token (PAT). Adds an integration test (vendor/gems/customer_api/test/integration/api_provision_user_test.rb) exercising provisioning flows and validations. Enables automated onboarding and scripted/CI provisioning via PATs, improving developer automation and account setup reliability.

Prefer assigning a commit's repo_release from its pull request when backfilling release data. Changes touch vendor/gems/release_track/app/jobs/backfill_commit_release.rb and related commit release concerns, adding assign_pull_request_commits and adjusting ensure_repo_release logic so backfill uses PR associations first — improving accuracy of historical release attribution.

Update renderColumnDelta (app/javascript/bundles/directory-browser/browser-column-renders.js) to render an LLM delta in addition to the existing standard per-directory delta, with minor SCSS adjustments in repo-file-browser.scss for layout/visuals. all-files-browse-frame.js unchanged. Result: UI now shows AI-generated deltas alongside standard deltas for clearer per-directory change visibility.

Add two new segments (commit_ai_lines_committed_count and delta_from_llms) by updating LLM metrics creation, segment display definitions, and chart icon mapping. Key changes touch llm_resource_stat_creation_calculation_concern, segment_display, and chart_icon_by_segment so the metrics are generated, labeled and rendered in charts. Impact: these metrics are now tracked and visible in dashboards.

Implements a new Claude v1 documentation page by adding a Rails view (app/views/pages/mathematics_of_diff_delta.html.haml) that presents the "Mathematics of Diff Delta" content. Authored March 3, 2026 and released to production, this adds in-app explanatory material to improve discoverability, developer understanding, and onboarding for the model's mathematical behavior.

Add keyboard handling to the EditingCommentContent component so pressing ESC cancels/dismisses the inline comment input. Implemented new onKeyDown logic and small render adjustments in editing-comment-content.js to detect ESC and close the editor. Improves UX by letting users quickly cancel or exit comment edits using the keyboard.

Adjust CustomerApiBaseController::derive_api_request_committer to accept and resolve committer_identifier values supplied as remote_id, fixing failures that prevented AI API usage stats from attributing requests correctly. Updated integration test (vendor/gems/customer_api/test/integration/api_ai_usage_test.rb) to cover remote_id cases. Addresses a bug reported by Álvaro and restores accurate committer attribution and usage metrics.

Implements auto-approval for commits flagged as high-velocity and associated with an LLM model, treating them as valid Diff Delta and allocating the reward between the developer and the LLM. Primary changes touch app/lib/commit_concerns/value_evaluation_concerns.rb (new deduction/state logic for LLM-authored commits) plus test updates in llm_metrics. Benefit: faster approvals for trusted LLM-assisted changes and automated reward distribution.

Update config/appsignal.yml to stop transmitting background-job metadata to AppSignal so the service can be used for request-level performance tracking without escalating to the higher billing tier (~$1k/month). Reduces telemetry volume and prevents increased billing while preserving useful performance signals.

Introduce a background backfill job and Rake task to populate commit-level LLM classification for subscriber entities. Tests were updated (AssignCommitLlmModelTest) and the task added under ai_lookup tasks; scheduling unchanged. Result: historical commits receive consistent LLM model assignments so downstream metrics and features rely on complete classification data.

Propagates new aggregate options through front-end and back-end: updates area-chart settings (app/javascript/bundles/area-chart/area-chart-settings.js) and stat aggregate definitions (app/lib/defines/stat_aggregates.rb) to include "AI provider" and "committer" as selectable aggregation dimensions. Result: charts and statistics can now be grouped by AI provider and committer for richer segmentation of AI and non‑AI metrics.

Updated ExternalUsageClient::ExternalCursorAiUsageClient to handle a changed Cursor API response: daily_usage_data and derive_committer_from_cursor_identifier now extract committer/date info from the new payload shape, and the client notifies admins if Cursor returns no identifiable data for a date record. Released to production 2026-01-21. Impact: restores accurate usage attribution and adds early warnings for future Cursor regressions.

Add a new HAML partial (vendor/gems/customer_api/app/views/api_reference/_surveys.html.haml) documenting Customer API Surveys endpoints — parameters, responses, examples and usage notes. Deployed to production Jan 16, 2026. Improves developer discoverability and makes it easier to integrate with the Surveys API.

Update settings UI to group AI usage tokens by provider. Modified app/views/shared/settings/ai_usage.html.haml to add provider-based grouping and adjust token rows/controls, and added styles in app/javascript/apps/ai-usage-token-settings.scss. Improves readability and management of provider tokens in the settings page.

Fixes duplicate 'All Time' display in issue_browse by restoring the 'Per Interval' grouping. Updated app/views/shared/resource_actions/issue_browse.html.haml and added/adjusted test/integration/issue_browse_test.rb to assert correct ordering. Deployed to production; prevents duplicate entries in the UI and adds test coverage.

Addresses IN-497: improve Copilot 403 handling in LlmApiToken/LlmTokenResource by adding retry windows and enhanced logging to detect and tolerate 403 responses and partial failures, reducing transient auth errors across orgs. Adds scaffolding for GitLab Issues (ExternalIssue::GitlabIssue and GitlabIssueTrackerIntegration) to prepare for issue-sync/provider features. Impact: fewer auth flakes and a foundation for GitLab support.