0.4.4

Release v0.4.4

Final attempt to clear all 5 platforms. Includes the full chain of
post-monorepo build fixes:
- #47: linux.executableName + Windows pnpm shell:true
- #49: extraMetadata.name=etherpad-desktop (deb/snap/Win path fix)
- #51: exclude etherpad/bin/ (Windows symlink cleanup)
- #54: pnpm hoisted node-linker for etherpad bundle (Windows junction fix)

Bundle size grows ~80-135MB vs v0.4.3 due to the hoisted layout
losing the .pnpm-store prune. Size-reclaim follow-up planned.

Snap publish still pending: previous v0.4.x uploads stuck in Snap
Store review at https://dashboard.snapcraft.io/ — needs manual reject.

Auto-tagged manually for the fifth time; release-please's component
match still misfires.