chore(main): release 6.0.0-beta.51

[alexwarren]

🤖 I have created a release beep boop

6.0.0-beta.51 (2026-08-11)

Features

• add German gamebook template and editable language field (#2032) (e01ae97)
• add i18n gap-detection tooling and language registry (#2034) (97b00b3)
• AppShell: add complete German translation (#2030) (90ebe2c)
• AppShell: add i18n infrastructure (#2024) (45fe8b1)
• bring Spanish to full 3-layer parity (#2035) (d6f0abe)
• ElectronApp: reveal recent files in Finder, detect external file changes (#2020) (921ba45)

Bug Fixes

• AppShell: hide library files when opening, repair missing gameid on import (#2022) (d0012ca)
• AppShell: resolve custom Included Library content on reload (#2017) (49fb9ae)
• AppShell: resolve Included Library content for Electron and FSA folders (#2021) (865ce1a)
• AppShell: show a reload banner when an Included Library changes (#2019) (7d5ec65)
• AppShell: Spanish gamebook template, locale capitalization, picker labels (#2036) (a3b83d2)
• AppShell: translate remaining strings and fix Create-tab button overflow (#2031) (aa620d4)
• Engine: don't crash on a duplicate key in a simple dictionary attribute (#2018) (80c64e9)
• Engine: use consistent Du register across German translations (#2033) (7851024)
• flatten native input chrome and tighten tree filter icon spacing (#2023) (d371869)
• WasmPlayer: pass --tag latest to npm publish (#2014) (a93f483)

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[alexwarren]

🤖 Created releases:

• v6.0.0-beta.51

🌻