UI follow-up: finish Material icon inventory in specialized dialogs and legacy P2 search #578

Checkpoint context — 2026-10-15

This issue preserves the remaining app-wide visual consistency scope after the completed operator MainWindow/first-run/shared toolbar Material migration in PR #575 (HEAD 7a761feecbda9f943b6078a2a595b8e95295578f) and Browser continuation PR #577 (HEAD 4be7b51b9040a7a5f1d8ecaa1d90bbc1a3b9d081). Do not reopen the confirmed double-Events fix #574 or overwrite the operator Material SVGs.

Already covered and CI-proven

• 8 main navigation icons with a single owner and repeatable resize behavior
• Center and rail Add IED across all dynamic first-run builders
• One existing clock+server NTP compound glyph (no duplicated template)
• MainWindow action icons, P2 command templates, 26 official local Material geometries with Apache-2.0 notice and installer packaging
• PR UI: unify Material icons across ARSAS navigation, onboarding and primary toolbars #575 exact-SHA 14/14 CI, real Windows portable/installer tests; PR M2.14 GUI: one IEC DO hierarchy with compact engineering values #577 exact-SHA 10/10 CI, all MainWindow Material work inherited

Not yet claimed

• Specialized secondary dialogs and ancillary tools have not been exhaustively inventoried, and remaining compatibility geometry resources exist by design.
• Resources/P2IndustrialControls.xaml still contains a LucideSearch Path used by a legacy search template; inspect actual consumers and migrate only if active. Do not delete legacy keys without consumer/reference proof.

Acceptance checklist

1. Inventory rendered icons across the specialized FAT, Diagnostics, RCB/GOOSE, Event Log, Settings Group, files/COMTRADE and other dialogs (not just resource declarations).
2. Replace visibly inconsistent glyphs with local licensed Material geometry while keeping button commands, Tags, hotkeys, control semantics, shape colors and WPF DPI behavior unchanged.
3. Exactly one glyph per affordance; avoid ContentTemplate wrapping a built-in Viewbox/Path. Add STA WPF composition tests, not only XAML string assertions.
4. Verify 100%, 125% and 150% Windows scaling, responsive header resizing, full/empty IED onboarding and status/tooltips.
5. Run exact-SHA ARSAS Windows managed/native/portable + installer regression; physical screenshot acceptance belongs to the operator, not CI.

Boundaries

No IEC 61850 engine/protocol change, RCB/GI/control writes, unsafe unsolicited MMS operations or public main promotion. Keep prior checkpoint PRs draft until authorized. This is a separate scoped follow-up and does not invalidate the completed primary UI deliverable.