ReturnDock is a complete local equipment-lending desk for one operator at one physical location. It is editable Python 3.10+ source with SQLite and a browser interface on the same computer, not hosted SaaS or a read-only mockup. It uses the Python standard library with no external packages or external network requests.

WHAT YOU CAN DO

Register equipment and borrowers; check out several available items in one atomic loan; return items individually with condition and notes. A partial return leaves the rest of the loan open. Print real handover/return records without implying e-signatures or legal contracts. Reserve equipment over inclusive whole-day ranges, cancel with retained history, or fulfill a reservation into a linked loan during its reserved dates. Put available equipment into service and release it with an updated condition.

DATA YOU CONTROL

Search and filter assets. Preview CSV rows before an all-or-nothing import; export asset/borrower registers. JSON backup preserves linked loans, returns, reservations, service and activity. Validated restore creates a dated local SQLite safety copy before replacing current data. Keep separate off-device backups; the app does not encrypt or synchronize data.

INCLUDED FILES

Runnable Python/SQLite app; editable HTML/CSS/JavaScript; setup README, step-by-step Operations Guide, API reference and source licence; CSV templates; opt-in fictional demo mode; worked partial-return JSON sample; seven-screen read-only HTML tour; four-page PDF buyer preview; 38 backend regression tests. The completed build also passed 54 Chromium workflow/responsive checks and clean-extracted ZIP verification.

REQUIREMENTS AND BOUNDARIES

Python 3.10+ and a modern browser on the same computer. Tested on Linux with Python 3.12/Chromium; other systems and convenience launchers are not independently tested. Responsive checks simulate viewport widths, not real mobile-device certification. UI due dates mean end of the local day. Reservations include both endpoint dates and conservatively block ordinary checkout until fulfilled, cancelled or expired. An overdue item stays unavailable until actually returned.

LICENCE AND EXCLUSIONS

One business, one physical location, internal use and modification only. No source resale or redistribution. No hosting, LAN/multi-user access, cloud sync, borrower portal, automated reminders, calendar integration, barcode scanning, billing, payments, accounting, e-signatures, legal agreements, promised support, future updates or guaranteed outcomes. Provided as-is; the buyer manages local data and backups.

FREE SAMPLE

The separate read-only HTML tour contains fictional records and disabled mutation controls; it is not the functional paid app. The paid app starts empty and includes a full runnable demo option for a separate new data directory.

PREVIEW ARTWORK

The three listing images are AI-assisted promotional compositions based on actual app screens with fictional sample records. Computer and equipment props illustrate the use case and are not included. The four-page PDF contains unembellished app captures.