feat: render file links as inline pills

[ocavue]

A host can now claim [label](url) links as files (resolveFileLink, read at editor creation) and render each claimed link as an inline pill: a file-kind icon, the name, and the size resolved (possibly async) by resolveFileInfo, with clicks reported through the new onFileClick. Serialization is untouched and claimed links behave like images (one caret atom, editable source). Also exports buildFileMarkdown so host commands that insert file links produce byte-identical markdown to a paste/drop.

[vercel]

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Project	Deployment	Actions	Updated (UTC)
meowdown	Ready	Preview, Comment	Jul 2, 2026 11:58am

[pkg-pr-new]

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npm i https://pkg.pr.new/prosekit/meowdown/@meowdown/core@202

npm i https://pkg.pr.new/prosekit/meowdown/@meowdown/react@202

commit: 419d9fd

[github-actions]

Coverage Report

Status	Category	Percentage	Covered / Total
🔵	Lines	93.27%	2663 / 2855
🔵	Statements	91.08%	2922 / 3208
🔵	Functions	90.75%	658 / 725
🔵	Branches	84.07%	1673 / 1990

File Coverage

File	Stmts	Branches	Functions	Lines	Uncovered Lines
Changed Files
packages/core/src/index.ts	0%	0%	0%	0%
packages/core/src/style.css	0%	0%	0%	0%
packages/core/src/extensions/extension.ts	100%	100%	100%	100%
packages/core/src/extensions/file-click.ts	84.21%	62.5%	100%	100%	16, 54, 56
packages/core/src/extensions/file-paste.ts	92.68%	92%	90%	97.14%	52, 67, 102
packages/core/src/extensions/file-view.ts	100%	95%	100%	100%
packages/core/src/extensions/follow-link.ts	100%	89.65%	100%	100%
packages/core/src/extensions/inline-mark-plugin.ts	96.72%	86.36%	100%	100%	104, 138
packages/core/src/extensions/inline-marks.ts	90.62%	0%	93.33%	90.62%	90-91, 150
packages/core/src/extensions/inline-text-to-mark-chunks.ts	97.41%	94.44%	100%	97.81%	102, 249, 317, 401
packages/core/src/extensions/mark-names.ts	100%	100%	100%	100%
packages/core/src/testing/index.ts	100%	90%	100%	100%
packages/core/src/utils/format-file-size.ts	100%	100%	100%	100%
packages/react/src/components/editor-extensions.tsx	100%	97.05%	100%	100%
packages/react/src/components/editor.tsx	80.95%	68.75%	77.77%	80.95%	311, 341-347
packages/react/src/components/prosekit-editor.tsx	95.58%	90.19%	91.3%	96.72%	262, 307-310

Generated in workflow #905 for commit 419d9fd by the Vitest Coverage Report Action

[ocavue]

Merged latest master. The merge also integrates #196: Mod-Enter now follows the file pill under the caret (FollowLinkHandlers gained onFileClick, checked before the link lookup since a claimed link carries no link marks), and FileClickPayload.event widened to MouseEvent | KeyboardEvent to match the other click payloads.