feat(shortcuts): Add keyboard shortcuts dialog (? key) (#382)

Co-authored-by: kentcdodds <1500684+kentcdodds@users.noreply.github.com>
Co-authored-by: copilot-swe-agent[bot] <198982749+Copilot@users.noreply.github.com>
Co-authored-by: Kent C. Dodds <me+github@kentcdodds.com>

chore: fix typescript stuff

feat(mermaid): enhance Mermaid component with unique ID and improved …

…rendering

- Added unique ID generation for Mermaid SVG rendering to prevent conflicts.
- Updated rendering logic to use the generated ID.
- Wrapped the SVG container in a div with a semantic class for better styling.

Closes epicweb-dev/advanced-mcp-features#19
Closes epicweb-dev/mcp-fundamentals#15
Closes epicweb-dev/mcp-fundamentals#25

fix: filter out browser extension errors from Sentry

Fixes EPICSHOP-5Y by ignoring errors containing __firefox__ and ethereum
globals that are injected by browser extensions and cause ReferenceErrors
in non-Firefox browsers.

feat(logging): add comprehensive authentication debugging logs for OA…

…uth device flow

fix(timing): sanitize server timing header values

Closes EPICSHOP-5S
Closes EPICSHOP-1F
Closes EPICSHOP-2D
Closes EPICSHOP-3Z
Closes EPICSHOP-27

feat(diff): make it easier to get to a specific diff

fix(iframe): clipboard copy functionality in iframes by adding target…

…ed allow="clipboard-write" attribute (#374)

* Initial plan

* Add allow="clipboard-write" to all iframe elements to fix copy functionality

Co-authored-by: kentcdodds <1500684+kentcdodds@users.noreply.github.com>

* Remove clipboard-write from video and form iframes per feedback

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Co-authored-by: kentcdodds <1500684+kentcdodds@users.noreply.github.com>

fix(routes): update relative paths for exercise readme and GitHub edi…

…ting links

fix(git): streamline empty directory cleanup and enhance update check…

…s with detailed messages