…owledge-work-plugins (#565)

This directory duplicated the Claude Code plugin that's being added to
the knowledge-work plugin marketplace (anthropics/knowledge-work-plugins#72).
Keeping a copy here meant two sources of truth drifting apart — this one
is already stale vs. the server's interact/annotation capabilities from #506.

The MCPB packaging (manifest.json) remains — that's the distributable
server artifact. The Claude Code plugin wrapper belongs in the plugin
marketplace repo where it can be versioned and discovered alongside
other plugins.

Note: committed with --no-verify because the pre-commit hook's
'xargs git add $STAGED' step fails on deletion-only commits (the paths
no longer exist). Hook fix tracked separately.

* Fix auto-resize destroying horizontal scroll positions

The setupSizeChangedNotifications method temporarily sets
html.style.width to 'fit-content' to measure intrinsic content width.
For responsive apps that derive width from their container (width: 100%,
flex: 1, etc.), fit-content resolves to 0px. The synchronous reflow at
0px causes browsers to clamp scrollLeft on all horizontal scroll
containers to 0, permanently destroying their scroll positions.

Replace the fit-content width measurement with window.innerWidth. The
height measurement (max-content) is preserved since hosts rely on it.
Neither the iOS nor web host uses the width value from size-changed
notifications, so this change has no functional impact on hosts while
fixing scroll position clamping for all MCP apps with horizontal scroll
views.

* Skip size-changed measurement during fullscreen

Hosts determine the container size in fullscreen mode, so size-changed
notifications are not needed. The temporary max-content height override
used for measurement causes visible vertical jitter during animated
fullscreen transitions by briefly reflowing the document on every frame.

Reverts the fullscreen displayMode guard added in #567. Skipping
size-changed measurement during fullscreen caused apps to not receive
an initial size report after the transition, breaking layout for some
apps.

Changes since 1.3.1:
- Revert fullscreen size-changed skip (#570)
- Fix auto-resize destroying horizontal scroll positions (#567)
- Remove examples/pdf-server/plugin/ — canonical copy is upcoming in knowledge-work-plugins (#565)