feat(editor): redesign the FastTools window tabs and settings

[VPDPersonal]

Important

• Make the Before/After gallery public: open https://claude.ai/artifact/9C4KR1FFqbhMygJVTGe5eQ and turn on its public link in the Share menu. Until then only you can open it.
• The commit trailer names Claude Opus 5.5, the model that wrote it. Change it if you want another.

Why. The FastTools window was text-heavy and inconsistent: legends, hints and counters competed with the cards, short actions mixed gradient bands and plain buttons, badges did not match the rest of the design, and a narrow window broke names mid-word.

What

• TabWindow keeps one view per tab and switches it by display, drives tabs from one table, hides key hints when a title does not fit, and runs the dot background only while the window is watched. Theme tokens gain Project / Per-user scope colours, and status text matches the docs site.
• Asset References: every object gets a folding heading with its icon, empty optional fields are one-line rows in field order, Orphaned is a plain section with a Clear band, a shared reference is a dot plus a muted "shared", and Smart Fix / Migrate name the target with its namespace. The prefab-instance notice holds Open Source Prefab.
• Project References: Broken, Required, Prefab instance overrides and Renamed headings replace the colour legend. Required and override entries get one card per file with its entry count, a file row shows "rid N" or "N rids", and Fix all / Reassign all take the card's status colour. In a narrow window names and counts end with an ellipsis, and Smart Fix / Migrate are cut in the middle.
• Settings: violet and gray stripes mark Project and Per-user settings, every control and button sits in one 200 px column at the right, the description rows are gone (tooltips explain each setting), and Excluded scan folders is a framed list.
• The icon of an empty Asset References or Project References tab is pinned to the middle of the tab, so it no longer jumps between tabs.

Start with: Aspid.FastTools/Packages/tech.aspid.fasttools/Editor/Scripts/Windows/TabWindow.cs, then Editor/Scripts/Windows/References/Project/SerializeReferenceProjectView.Cards.cs and Editor/Scripts/Windows/References/Asset/SerializeReferenceGraphView.Cards.cs.

Verification

• C# compile on Unity 6000.6.5f1 and the 6000.0.64f1 floor → 0 errors
• Full EditMode suite on 6000.6.5f1 → 2230 passed, 1 skipped, 0 failed (public API snapshot unchanged)
• New tests: same-name type qualification (SerializeReferenceAuditUITests), GroupByFile / DescribeRids, one visible view per tab and view reuse (EditorWindowSmokeTests)
• dotnet test Aspid.FastTools.YamlTests → 242 passed
• check-contrast.mjs → 110/110 pairs, including the scope stripes and the framed folder list; check-package-files, check-version, check-unity-minimum, check-skills, node --test scripts/*.test.mjs → pass
• Site: check-readme, check-translations, npm test, npm run build → pass
• Every window state captured at 760, 360 and 1400 pt on both skins in a hidden batch Editor, Before on main and After on this branch; edges and empty-state icon positions measured

Before / After

Every window state at full size, on the dark and the light skin, Before (main at 6e5dfd1) and After (this branch), with a side-by-side mode: https://claude.ai/artifact/9C4KR1FFqbhMygJVTGe5eQ

🤖 Generated with Claude Code

[claude]

Verdict: 0 blocking, 4 minor
The main concern: Project References now builds one card per file for Required violations and overrides, with no limit across files, so a large project draws far more than the old 200-row page. Everything else is comment cleanup.