v2.76.0

Self-hosted ZenNotes server 2.76.0 with the pinned browser artifact web-2.76.0-web.h5b1c11f768454e10 (built from ZenNotes/zennotes 61628218, the v2.76.0 release commit).

What changed for self-hosters:

• Choose any due date from the task menu (ZenNotes/zennotes#991): the task menu in the Tasks list, on the board and in the calendars has Choose a date…, which opens the month calendar typing @date opens in a note; a click on a day sets it, and @ opens it on the selected task in Vim mode.
• No due date has its own place (ZenNotes/zennotes#990): a task without a due date waits under No due date, after Upcoming, instead of in Today; the Status board has the same column, and dropping a card there clears its date.
• Order the Tasks list by priority (ZenNotes/zennotes#989): an Order menu above the list puts high priority first inside each date group (s in Vim mode, :order priority).
• One folder label for a note: note search, the buffer switcher and the [[ picker name a note's folder the same way.
• Move asset takes a folder like v1..2: the prompt refuses only a whole .. segment, and an empty answer files the asset in assets/, as this server always did. The server's own check (cleanAssetTargetDir and SafeJoin) already allowed such names and still refuses an escaping path.

The server's Go code is unchanged since 2.75.0, and no Go dependency moved, so vendorHash stays.

Verification before publication: CI passed on #44 (go on macOS, Ubuntu and Windows, docker and nix). Every released binary matches SHA256SUMS, and the manifest asset is the committed pin byte for byte; with a scratch config and vault, the released darwin-arm64 binary reported v2.76.0, served the app, answered 401 without the token and 200 with it, and the pinned bundle carries Choose a date… and the list's Order setting.

Docker: adibhanna/zennotes:2.76.0, 2.76 and latest are published from this tag by the repository's Docker publisher (linux/amd64 and linux/arm64, one digest).