New housing district and gameplay fixes

**New housing district** - Purchase a permanent plot with Transferable Coins and publish construction changes for gold. - Design your home across two floors with a selection of floors, walls, doors, and stairs. - One plot per account, per world. Pending transfers count toward the limit. - Travel there with Captain Greyhound and return through the district portal. - Roofs and editor furnishing tools will come later. Normal furniture placement remains available. **Rewards and store** - Daily rewards: Fixed quantity checks and XP boost tracking. Claims preserve larger unused rewards and purchased boost time. - Store purchases: Improved eligibility, payment, and delivery checks. Failed purchases no longer report success or advance XP boost purchase counts. - House kits: Orders check space for the complete delivery and undo partial deliveries when they fail. - Renames and hirelings: Paid renames, skills, and outfits require successful payment. Required namelock corrections remain free. - Reward bags: Rewards are preserved when you lack room or carrying capacity. - Blessings and bundles: Fixed blessing limits and regular blessings being blocked by a full PvP blessing. Reward-token and prey-card bundles indicate when the whole bundle will not fit. - Store browsing: Fixed purchase-history pagination and searches containing punctuation. **Gameplay and usability** - Ferumbras seals: Removed the unintended Hellflayer melee skill debuff. - Guild banking: Fixed guild deposits and recipient-name handling. Pending requests cancel if membership or required permissions change. - Quest tracker: Fixed duplicate background checks and delayed navigation opening an outdated selection. - Server-save notices: Short warning countdowns now match the actual save timing. **Server reliability** - Server startup stops safely if a database migration fails.