Several desktop copy entry points still called navigator.clipboard directly, which can fail or report success inconsistently in Tauri and browser test contexts. Route those copy actions through the existing textarea execCommand fallback helper and cover the fallback paths for startup diagnostics, markdown copy controls, and workspace file paths.
Constraint: Clipboard API is not reliable in every desktop/browser context.
Rejected: Leave direct navigator.clipboard calls in isolated components | repeats the diagnostics copy failure mode and creates inconsistent copy behavior.
Confidence: high
Scope-risk: narrow
Directive: New desktop copy controls should use copyTextToClipboard or CopyButton instead of calling navigator.clipboard directly.
Tested: cd desktop && bun run lint
Tested: cd desktop && bun run test -- --run src/components/markdown/MarkdownRenderer.test.tsx src/components/layout/StartupErrorView.test.tsx src/components/workspace/WorkspacePanel.test.tsx src/__tests__/diagnosticsSettings.test.tsx src/components/chat/MessageList.test.tsx
Tested: bun run check:desktop
Tested: bun run check:native
Tested: bun run check:coverage
Tested: bun run verify (passed=7 failed=0 skipped=3)
Not-tested: Live provider baseline; not required for this desktop-only clipboard fix.
Online upgrades can strand users on stale desktop UI state or malformed local persistence. This adds a deny-by-default Doctor path that resets only regenerable desktop UI state, reports protected local files with redacted metadata, and keeps protected repair as a dry-run no-op until a reviewed backup-first flow exists.
Constraint: Chat transcripts, model/provider config, Skills, MCP, IM bindings, adapter sessions, OAuth tokens, plugins, and team/session records are user-owned protected state.
Rejected: Automatically rewrite malformed protected JSON | unsafe without schema-specific migrations and backups.
Rejected: Continue relying only on startup migrations | users need an explicit recovery action after a white screen.
Confidence: high
Scope-risk: moderate
Directive: Keep Doctor repair deny-by-default; do not mutate protected state without an explicit reviewed backup-first manual repair flow.
Tested: bun test src/server/__tests__/doctor-service.test.ts
Tested: cd desktop && bun run test src/components/ErrorBoundary.test.tsx src/lib/doctorRepair.test.ts src/__tests__/diagnosticsSettings.test.tsx src/components/layout/StartupErrorView.test.tsx
Tested: cd desktop && bun run lint
Tested: bun run check:server
Tested: bun run verify (failed only existing agent-utils coverage baseline; changed-lines coverage 97.62%)
Not-tested: Packaged desktop manual Doctor click path.
