[zzzz465]

Summary

RimWorld 1.7 moves the game from Unity to Ludeon's Waylith engine (unstable branch, 2026-10-12). This PR adds a native 1.7 build, rewrites the 2019-era code, and adds CI.

1.7 / Waylith

• Waylith runs a modified .NET 10 CLR and redirects UnityEngine* to UnityStubs.dll, which implements IMGUI on the new backend. Every game API this mod uses (and the bodies of the patched methods) is unchanged from 1.6.
• New net10.0 target compiled against the 1.7 Assembly-CSharp.dll + UnityStubs.dll and Harmony 3.0 → 1.7/Assemblies; net472 target for 1.6 → 1.6/Assemblies.
• Fix: LoadFolders.xml had no v1.6 entry, so RimWorld 1.6 loaded the 1.5 DLL; added v1.6 and v1.7.

Refactor

• SDK-style multi-target project, nullable, warnings as errors; Core (engine-independent) / Patches / UI split; dead code removed.
• Mod versions are now written by the scribe while the meta header is written (transpiler) and read from the already-parsed header. Previously every save was re-loaded and re-written with XDocument, and opening the mismatch window re-wrote the selected save. XML layout unchanged, old saves still work.
• Versions also read from About.xml <modVersion> (workshop request).

Alignment and window

• LCS alignment by package id (was a greedy pass by display name); reordered mods shown as "load order changed" instead of removed + added.
• Summary/legend, search, toggles for unchanged mods and order changes (workshop requests), font-based row heights (the old fixed 34px threw and blanked the window), tooltips, "Save mod list" button, confirmation before restarting with the save's mod list. New strings translated (en/ko/ja/zh-CN).

CI / releases

• Assemblies are built locally (the 1.7 target needs game files) and committed; CI never downloads the game.
• release.yml, on a v* tag: checks the tag against About/Manifest.xml and the csproj version, checks the committed 1.6/1.7 assemblies, validates XML, runs the tests, zips the mod files, creates a GitHub release, then updates Steam Workshop item 1872244972 with steamcmd (workshop_build_item, content + change note only) using the cached login in STEAM_USERNAME / STEAM_CONFIG_VDF. Suffixed tags become GitHub pre-releases and skip the Workshop.
• Running the workflow manually only checks that the Steam login still works.
• AssemblyInformationalVersion no longer embeds the commit hash, so rebuilding does not change the committed DLLs.

Test plan

• dotnet build for net472 (1.6) and net10.0 (1.7) with warnings as errors
• 20 unit tests: LCS optimality vs. a textbook LCS on 6000 random lists, never fewer matches than the old algorithm, greedy fallback equal to the old code, Harmony 3.0 transpiler insertion inside a finally block on CoreCLR
• In-game on 1.7.4976 (automated, temporary test mod, log-verified): saving writes <meta><modMetaDatas> (Harmony 3.0.0.0, this mod 1.2.0; unknown versions omitted), reading the header back returns the same versions, a 1.6 save with 219 mods opens the window without loading it (221 rows: 212 removed, 7 unchanged, 2 added), filters work, no exceptions while drawing
• Visual check on 1.7 with computer use: layout, legend, search, both toggles, scrolling, hover tooltip, Esc, "Load anyway" (loads the save and closes the window), version-changed row. Synthetic clicks only register when held, and the window's X and the main-menu buttons did not respond to them at all (vanilla buttons too), so those were driven by a test-only helper.
• Run on 1.6
• After merge: manual run of release (Steam login check)
• First tagged release (v1.2.0): GitHub release + Workshop update

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