feat: add fluxer upstream source and self-hosting documentation

- Clone of github.com/fluxerapp/fluxer (official upstream)
- SELF_HOSTING.md: full VM rebuild procedure, architecture overview,
  service reference, step-by-step setup, troubleshooting, seattle reference
- dev/.env.example: all env vars with secrets redacted and generation instructions
- dev/livekit.yaml: LiveKit config template with placeholder keys
- fluxer-seattle/: existing seattle deployment setup scripts

fluxer/packages/schema/src/primitives/UserSettingsValidators.tsx

@@ -0,0 +1,127 @@
+/*
+ * Copyright (C) 2026 Fluxer Contributors
+ *
+ * This file is part of Fluxer.
+ *
+ * Fluxer is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * Fluxer is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with Fluxer. If not, see <https://www.gnu.org/licenses/>.
+ */
+
+import {
+	RelationshipTypes,
+	RelationshipTypesDescriptions,
+	RenderSpoilers,
+	RenderSpoilersDescriptions,
+	StickerAnimationOptions,
+	StickerAnimationOptionsDescriptions,
+	TimeFormatTypes,
+	TimeFormatTypesDescriptions,
+	UserAuthenticatorTypes,
+	UserAuthenticatorTypesDescriptions,
+	UserExplicitContentFilterTypes,
+	UserNotificationSettings,
+	UserNotificationSettingsDescriptions,
+	UserPremiumTypes,
+	UserPremiumTypesDescriptions,
+} from '@fluxer/constants/src/UserConstants';
+import {createInt32EnumType} from '@fluxer/schema/src/primitives/SchemaPrimitives';
+
+export const StickerAnimationOptionsSchema = createInt32EnumType(
+	[
+		[StickerAnimationOptions.ALWAYS_ANIMATE, 'ALWAYS_ANIMATE', StickerAnimationOptionsDescriptions.ALWAYS_ANIMATE],
+		[
+			StickerAnimationOptions.ANIMATE_ON_INTERACTION,
+			'ANIMATE_ON_INTERACTION',
+			StickerAnimationOptionsDescriptions.ANIMATE_ON_INTERACTION,
+		],
+		[StickerAnimationOptions.NEVER_ANIMATE, 'NEVER_ANIMATE', StickerAnimationOptionsDescriptions.NEVER_ANIMATE],
+	],
+	'Sticker animation preference',
+	'StickerAnimationOptions',
+);
+
+export const RenderSpoilersSchema = createInt32EnumType(
+	[
+		[RenderSpoilers.ALWAYS, 'ALWAYS', RenderSpoilersDescriptions.ALWAYS],
+		[RenderSpoilers.ON_CLICK, 'ON_CLICK', RenderSpoilersDescriptions.ON_CLICK],
+		[RenderSpoilers.IF_MODERATOR, 'IF_MODERATOR', RenderSpoilersDescriptions.IF_MODERATOR],
+	],
+	'Spoiler rendering preference',
+	'RenderSpoilers',
+);
+
+export const TimeFormatTypesSchema = createInt32EnumType(
+	[
+		[TimeFormatTypes.AUTO, 'AUTO', TimeFormatTypesDescriptions.AUTO],
+		[TimeFormatTypes.TWELVE_HOUR, 'TWELVE_HOUR', TimeFormatTypesDescriptions.TWELVE_HOUR],
+		[TimeFormatTypes.TWENTY_FOUR_HOUR, 'TWENTY_FOUR_HOUR', TimeFormatTypesDescriptions.TWENTY_FOUR_HOUR],
+	],
+	'Time format preference',
+	'TimeFormatTypes',
+);
+
+export const UserNotificationSettingsSchema = createInt32EnumType(
+	[
+		[UserNotificationSettings.ALL_MESSAGES, 'ALL_MESSAGES', UserNotificationSettingsDescriptions.ALL_MESSAGES],
+		[UserNotificationSettings.ONLY_MENTIONS, 'ONLY_MENTIONS', UserNotificationSettingsDescriptions.ONLY_MENTIONS],
+		[UserNotificationSettings.NO_MESSAGES, 'NO_MESSAGES', UserNotificationSettingsDescriptions.NO_MESSAGES],
+		[UserNotificationSettings.INHERIT, 'INHERIT', UserNotificationSettingsDescriptions.INHERIT],
+	],
+	'Notification level preference',
+	'UserNotificationSettings',
+);
+
+export const RelationshipTypesSchema = createInt32EnumType(
+	[
+		[RelationshipTypes.FRIEND, 'FRIEND', RelationshipTypesDescriptions.FRIEND],
+		[RelationshipTypes.BLOCKED, 'BLOCKED', RelationshipTypesDescriptions.BLOCKED],
+		[RelationshipTypes.INCOMING_REQUEST, 'INCOMING_REQUEST', RelationshipTypesDescriptions.INCOMING_REQUEST],
+		[RelationshipTypes.OUTGOING_REQUEST, 'OUTGOING_REQUEST', RelationshipTypesDescriptions.OUTGOING_REQUEST],
+	],
+	'Relationship type',
+	'RelationshipTypes',
+);
+
+export const UserPremiumTypesSchema = createInt32EnumType(
+	[
+		[UserPremiumTypes.NONE, 'NONE', UserPremiumTypesDescriptions.NONE],
+		[UserPremiumTypes.SUBSCRIPTION, 'SUBSCRIPTION', UserPremiumTypesDescriptions.SUBSCRIPTION],
+		[UserPremiumTypes.LIFETIME, 'LIFETIME', UserPremiumTypesDescriptions.LIFETIME],
+	],
+	'Premium subscription type',
+	'UserPremiumTypes',
+);
+
+export const UserAuthenticatorTypesSchema = createInt32EnumType(
+	[
+		[UserAuthenticatorTypes.TOTP, 'TOTP', UserAuthenticatorTypesDescriptions.TOTP],
+		[UserAuthenticatorTypes.SMS, 'SMS', UserAuthenticatorTypesDescriptions.SMS],
+		[UserAuthenticatorTypes.WEBAUTHN, 'WEBAUTHN', UserAuthenticatorTypesDescriptions.WEBAUTHN],
+	],
+	'Authenticator type',
+	'UserAuthenticatorTypes',
+);
+
+export const UserExplicitContentFilterTypesSchema = createInt32EnumType(
+	[
+		[UserExplicitContentFilterTypes.DISABLED, 'DISABLED', 'Explicit content filter disabled'],
+		[UserExplicitContentFilterTypes.NON_FRIENDS, 'NON_FRIENDS', 'Filter explicit content from non-friends only'],
+		[
+			UserExplicitContentFilterTypes.FRIENDS_AND_NON_FRIENDS,
+			'FRIENDS_AND_NON_FRIENDS',
+			'Filter explicit content from all users',
+		],
+	],
+	'Explicit content filter level',
+	'UserExplicitContentFilterTypes',
+);