docs: update version to v1.8.0 and document hash-based update checking
docs: update file receiver documentation for default --accept-dirs
docs(wiki): remove ascii browser mockup, add full navigation index to sidebar
docs(wiki): rename file receiver service to Inbox, add full QR code and terminal ASCII screenshots
docs(wiki): align TUI guide to golden standard bottom menus
docs(wiki): publish complete TAILCAT ZER0 documentation
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