M2.14 UI: unify navigation and first-run Add IED on Material icon system

[masarray]

Visual consistency follow-up to #574

• Base is M2.14 UI: remove double Events glyph from overlapping icon templates #574 exact green HEAD b725268f; operator-supplied material Events/Alarm/FAT/Browser, NTP single compound clock+server and rail Add IED preserved.
• Material filled geometries registered as WPF Geometry resources for Explorer, Live, GOOSE and Diagnostics instead of older P2 Lucide overlay. All eight nav destinations now have exactly one explicit first-party geometry Path; responsive caption updates remain intact.
• First-run central Add IED uses OperatorAddIedIcon in both dynamic hero and older compatibility launcher, rather than LucidePlus. Existing actions and other SCL/Project paths unchanged.
• P2 old decorator detects existing hand-built Path and refuses to layer a second icon; NTP uses existing single combined clock/server SVG.
• Tests protect shared Material glyphs, Add IED dynamic icon source, and existing click semantics. No IEC/MMS/RCB/CF logic, ARIEC pin or public main changes.
• Await exact SHA Windows WPF compile/regression/native/portable smoke, plus user screenshot acceptance.

Verified exact-SHA CI (2026-10-15)

• 5cfb3cd440d3180ad3f3c7be35614f41944c2508 — 11/11 GitHub workflows success, no failures.
• Windows workflow https://github.com/masarray/arsas/actions/runs/38687343411 — full managed regression, pinned ARIEC, ArdIrec native bridge, sealed package and real portable EXE smoke SUCCESS.
• Portable artifact https://github.com/masarray/arsas/actions/runs/38687343411/artifacts/11950833701
• Sealed installer-input artifact https://github.com/masarray/arsas/actions/runs/38687343411/artifacts/11950848602
• Controls: 8 Material-style nav paths; no duplicate Events wrapper; first-run central and rail Add IED consistent. NTP stays single clock/server compound operator SVG.
• Physical visual inspection under actual Windows scaling pending. UI scope is primary workstation header and first-run Add IED; not yet every secondary icon across all diagnostic/FAT dialogs. No merge into public main.

[masarray]

Cross-thread UI coordination checkpoint, 2026-10-15: This draft is a narrower sibling of comprehensive UI PR #575 (HEAD 7a761feecbda9f943b6078a2a595b8e95295578f). Both solve the eight-tab Material and center Add IED goal, but #575 additionally migrates primary action/P2 workbench icons, includes licensing/provenance and passed 14/14 exact-SHA CI + installer smoke. Latest Browser PR #577 (4be7b51b9040a7a5f1d8ecaa1d90bbc1a3b9d081) is 1 commit above #575 and passed 10/10 checks. Frozen review/checkpoint branch checkpoint/m214-material-icons-browser-20261015 points to #577. Please avoid merging this sibling blindly into #575/#577 and reintroducing redundant templates; preserve it as rollback evidence pending normal owner review. Remaining deep dialog inventory: #578. No public main merge authorized.

[masarray]

Thread A continuation ownership / M2.14 integration checkpoint. Original Thread A chat reached its limit; continuation now uses verified latest PR #577 4be7b51b9040 (10/10 green; includes consolidated M2.13K stress, CF/phasor A+B, scalar no-angle, SG and Material icons). New draft PR #579 at 07b7b1820aebce84c63cf0f0f2d66cbd8cadc798 targets a measured live shortfall: exact ATCC1.TapChg [ST] DataSet parent stayed Not read despite observed valWTr=3 and posVal=3. Only projection-layer, model-proven ST field summaries added; no change to canonical SSOT, runtime Report ingest, read plans, pin or stable. Five focused tests; Windows CI currently running.

Conflict guard: #576 (sibling icon unification branch) diverged from #575; avoid assuming it is an ancestor of #577 or blindly cherry-picking icon modifications. Reconcile only proven missing UI behavior by comparison, keeping #577 as immutable base and #579 as descendant. No merge to main until Windows CI + physical BCUGE/ZIV acceptance. Remaining field issues: CF/unit evidence and GUI parity; avoid fake scalar angles or invented observations.