DonutAuctionHouse v1.6.0

Features

• Optional compact k/M browse and Your Items prices. Disabled by default; existing economy formatting and config values are preserved. Configure suffixes, 0-6 fractional digits, locale, and currency template. Display rounding never changes stored prices or payments.
• Buy/sell confirmations show the provider's formatted price and every decimal digit of the amount.
• A book in the auction browser opens private, read-only Bought/Sold history. Includes previous/next pages, Refresh, Back, item, precise price, date/time zone, and seller/buyer. Unknown names fall back to UUIDs; unavailable item metadata uses a placeholder.
• History queries enforce viewer ownership in the service/database path and run asynchronously. Stale results cannot reopen a menu after navigation or disconnect.

Fixes

• Reject non-finite prices such as NaN, and reject out-of-range sell command prices before removing the held item. Invalid prices are no longer silently clamped into a different listing price.

• Database index initialization uses portable metadata checks rather than MySQL-unsupported CREATE INDEX IF NOT EXISTS syntax. Migration errors are reported instead of being hidden.

• A price-provider or confirmation-formatting failure after payment and item delivery now returns a safe success message. Completed purchase claims cannot be reopened by a late release attempt.

Upgrade and data

• Replace the jar and restart. Keep existing config, messages and database files; back up the database before upgrades. New settings/default messages are added without resetting custom values.
• History reuses the existing auctions table and adds one purchase_completed flag. Legacy SOLD records remain visible; new pre-payment claims and failed purchases are excluded. No parallel ledger or payment mechanism is introduced.
• Completion bookkeeping runs after existing payment/item delivery and cannot undo settlement. If the database fails at that point, a record may be absent; the server logs its auction ID. Legacy versions cannot distinguish old crash-interrupted SOLD claims from completed sales.

Verification and compatibility

• Java 17 bytecode and Paper 1.20.1 API target retained; JDK 21 builds supported.
• Store support matrix retained: Paper, Folia, Purpur, Spigot and Bukkit, Minecraft 1.20.1 through 26.3.
• Unit, registered Bukkit command/GUI event, native SQLite, history privacy/pagination/migration, and settlement regressions are included. CI also checks Java 17/21 and native MySQL.
• Isolated headless Paper 1.20.1 and 26.3 probes passed startup, item serialization, formatting and database history. Real-client visual checks, every intermediate server/version, and multi-server Folia/Vault tests have not been run. Folia's official download API did not provide a 26.3 build during verification.
• The customer's /ah sell <price> browser-opening report has no proven customer-specific cause. A foreign /ah alias collision reproduces the symptom; the namespaced /donutauctionhouse:ah sell <price> routes correctly in tests. This release does not claim that unresolved report is fixed. Please provide plugin/server versions, exact command, held item, namespaced comparison and logs.