Diagnostics exports previously preserved only compact summaries, which made user-uploaded issue bundles hard to debug. This records richer sanitized details from server, CLI, SDK, browser, React, and desktop API failure paths while keeping request bodies and secrets out of client-side reports.
Constraint: Diagnostic bundles must be useful for GitHub issues without including chat contents, file contents, full environments, or API keys.
Rejected: Only expand the Settings UI summary | the exported bundle would still miss hidden runtime failures.
Confidence: high
Scope-risk: moderate
Directive: Keep diagnostics write paths best-effort and non-blocking; do not add request-body capture without a redaction review.
Tested: bun test src/server/__tests__/diagnostics-service.test.ts src/server/__tests__/conversation-service.test.ts
Tested: cd desktop && bun run test src/api/client.test.ts src/__tests__/diagnosticsSettings.test.tsx --run
Tested: bun run check:server
Tested: bun run check:desktop
Tested: agent-browser E2E on ports 37652/41752 captured client_unhandled_rejection and exported a redacted tar.gz bundle
Desktop failures were previously hard to debug from issue reports because server-side and CLI startup details were only partially visible in the UI. This adds a dedicated cc-haha diagnostics store with sanitized structured events, runtime error summaries, a Settings diagnostics view, and an exportable bundle that users can attach to reports.
Constraint: Diagnostic exports must not include chat content, file contents, full environment variables, API keys, bearer tokens, cookies, or OAuth tokens.
Rejected: Export raw server logs | easier to debug but too likely to leak secrets and private workspace data.
Rejected: Keep diagnostics only in transient UI errors | still leaves maintainers unable to diagnose later GitHub issues.
Confidence: high
Scope-risk: moderate
Directive: Do not add raw transcript, prompt, attachment, or environment dumps to diagnostics without a separate privacy review.
Tested: ANTHROPIC_API_KEY=test-key bun test src/server/__tests__/diagnostics-service.test.ts
Tested: ANTHROPIC_API_KEY=test-key bun test src/server/__tests__/conversation-service.test.ts
Tested: ANTHROPIC_API_KEY=test-key bun test src/server/__tests__/conversations.test.ts
Tested: cd desktop && bun run test src/__tests__/diagnosticsSettings.test.tsx --run
Tested: cd desktop && bun run lint
Tested: cd desktop && bun run build
Tested: agent-browser E2E on local server/dev UI for CLI startup failure, provider test failure, diagnostics tab, copy summary, export bundle, and tar/secret scan
Not-tested: Destructive clear-logs button in browser E2E; local deletion was intentionally not clicked.
