chore: import upstream snapshot with attribution

.changeset/README.md

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+# Changesets
+
+Hello and welcome! This folder has been automatically generated by `@changesets/cli`, a build tool that works
+with multi-package repos, or single-package repos to help you version and publish your code. You can
+find the full documentation for it [in our repository](https://github.com/changesets/changesets)
+
+We have a quick list of common questions to get you started engaging with this project in
+[our documentation](https://github.com/changesets/changesets/blob/main/docs/common-questions.md)

.changeset/admin-backups.md

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+---
+"emdash": minor
+"@emdash-cms/admin": minor
+"@emdash-cms/auth": patch
+---
+
+Adds a Backups page to admin settings: download a complete content backup (all content including drafts and trash, schema, taxonomies, menus, widgets, media metadata, and site settings — never user accounts or secrets) with one click, and optionally enable daily automatic backups to the site's storage bucket with configurable retention. A new `backups:manage` permission gates the feature to admins.

.changeset/admin-site-icon.md

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+---
+"emdash": patch
+---
+
+The admin shell now falls back to the Site Icon configured in Settings → General for its favicon, so the EmDash backend is branded like the public site. An explicit build-time `admin.favicon` still takes precedence, and the default EmDash mark is used when neither is set.

.changeset/center-media-placeholders.md

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+---
+"@emdash-cms/admin": patch
+---
+
+Centers the empty-state placeholder labels in Image, File, and media picker fields.

.changeset/config.json

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+{
+	"$schema": "https://unpkg.com/@changesets/config@3.0.2/schema.json",
+	"changelog": [
+		"@changesets/changelog-github",
+		{
+			"repo": "emdash-cms/emdash"
+		}
+	],
+	"commit": false,
+	"fixed": [
+		[
+			"emdash",
+			"@emdash-cms/admin",
+			"@emdash-cms/auth",
+			"@emdash-cms/blocks",
+			"@emdash-cms/cloudflare",
+			"@emdash-cms/gutenberg-to-portable-text",
+			"@emdash-cms/x402",
+			"create-emdash"
+		]
+	],
+	"___experimentalUnsafeOptions_WILL_CHANGE_IN_PATCH": {
+		"onlyUpdatePeerDependentsWhenOutOfRange": true
+	},
+	"linked": [],
+	"access": "public",
+	"baseBranch": "main",
+	"updateInternalDependencies": "minor",
+	"bumpVersionsWithWorkspaceProtocolOnly": true,
+	"ignore": [
+		"@emdash-cms/aggregator",
+		"@emdash-cms/blocks-playground",
+		"@emdash-cms/demo-cloudflare",
+		"@emdash-cms/demo-postgres",
+		"@emdash-cms/demo-preview",
+		"@emdash-cms/marketplace",
+		"@emdash-cms/playground",
+		"@emdash-cms/plugin-api-test",
+		"@emdash-cms/plugin-marketplace-test",
+		"@emdash-cms/plugin-sandboxed-test",
+		"@emdash-cms/template-blank",
+		"@emdash-cms/template-blog",
+		"@emdash-cms/template-blog-cloudflare",
+		"@emdash-cms/template-marketing",
+		"@emdash-cms/template-marketing-cloudflare",
+		"@emdash-cms/template-portfolio",
+		"@emdash-cms/template-portfolio-cloudflare",
+		"@emdash-cms/template-starter",
+		"@emdash-cms/template-starter-cloudflare",
+		"docs",
+		"emdash-demo",
+		"emdash-e2e-fixture",
+		"emdash-e2e-fixture-cloudflare",
+		"emdash-plugins-demo"
+	]
+}

.changeset/editor-settings-panel-layout.md

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+---
+"@emdash-cms/admin": minor
+---
+
+Redesigns the content editor layout. The editor now fills the viewport with a distraction-lighter writing column, and all publish actions live in a structural settings panel on the end side: a single Save control transitions between Save, Saving, and Saved alongside Live View, Preview, and publish controls in an action bar pinned above the panel's sections. Publish-state badges now live in the Publish section with slug, scheduling, ownership, bylines, translations, taxonomies, SEO, outline, and revisions, with Move to Trash isolated at the bottom. Below the `lg` breakpoint the panel becomes a slide-in sheet behind a Settings button, while Save, preview/live-view access, and publish controls stay visible in the editor header. The layout mirrors correctly in RTL locales.

.changeset/inline-editor-pagehide-flush.md

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+---
+"emdash": patch
+---
+
+Fixes unsaved inline (visual) editor changes being silently lost when navigating away, e.g. via the browser back button. Edits are now flushed with a keepalive request when the page unloads.

.changeset/oauth-acceptable-invites.md

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+---
+"@emdash-cms/auth": minor
+"emdash": minor
+"@emdash-cms/admin": minor
+---
+
+Invited users can now accept their invite by signing in with Google or GitHub, instead of only creating a passkey.

.changeset/taxonomy-filter-pivot-seek.md

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+---
+"emdash": patch
+---
+
+Fixes taxonomy-filtered collection listings reading the entire collection on SQLite/D1 when the term is selective. Such listings now seek the matching entries directly, cutting D1 rows-read from tens of thousands to the page size.