feat(inventory): port retail weapon switching

Sequence primary weapon replacement through the server-confirmed AutoWield transaction: return the occupied weapon to the player pack, wait for its move event, then wield the requested item. Route authoritative CombatMode property updates so peace stays peace and war adopts the new weapon stance without client-synthesized animation.

Co-Authored-By: Codex <codex@openai.com>

docs/architecture/retail-divergence-register.md

@@ -211,7 +211,7 @@ AP-94..AP-112 for the confirmed retail-UI completion gaps.
 | AP-105 | **PARTIAL 2026-07-10 (Wave 2.2)** — inherited scrollbar media/roles now come from DAT (decrement/top `0x06004C69`, increment/bottom `0x06004C6C`). Retained chat still lacks complete tab/filter/unread, social availability, squelch, and focus-opacity behavior; a second ChatVM still loses FPS/position providers. | `src/AcDream.App/UI/Layout/DatWidgetFactory.cs`; `ChatWindowController.cs`; chat mount in `GameWindow.cs` | Shared log/send path, wrapping, scrollbar roles, and outer maximize geometry work; Wave 5 consolidates remaining chat state | Commands degrade, tabs are no-ops, moderation/channel state is wrong, and focus visuals diverge | `gmMainChatUI @ 0x004CCCC0..0x004CE2A0`; `UIElement_Scrollbar::OnSetAttribute @ 0x004714D0`; `ChatInterface` methods |
 | AP-106 | The retained UI has no external/ground-container window lifecycle, while the original owned-side-bag `NoLongerViewingContents` premise was incorrect (#196) | `src/AcDream.App/UI`; window runtime; absent external-container controller | Owned inventory navigation remains usable and must not gain an unproven `0x0195` send; Wave 2/6 adds lifecycle ownership and the separate external surface | External container replacement/close cannot notify the server exactly once; adding the packet to owned bag close would itself diverge from the named retail call graph | `ClientUISystem.groundObject`; `CM_Inventory::Event_NoLongerViewingContents @ 0x006ABC50`; `docs/research/2026-07-10-retail-panel-behavior-pseudocode.md` |
 | ~~AP-107~~ | **RETIRED 2026-07-11 (Wave 3.3 / #197)** — typed `OfferPrimaryClick` returns `NotActive`, `ConsumedSuccess`, or `ConsumedRejected`; every retained item surface plus radar/world offers active target mode before local selection/open/use fallback. Rejections are consumed and cannot drift selection. | `src/AcDream.App/UI/ItemInteractionController.cs`; inventory/paperdoll/toolbar/radar/world call sites | — | — | `UIElement_ItemList::HandleTargetedUseLeftClick @ 0x004E24D0` |
-| AP-108 | Paperdoll omits Aetheria, full `AutoWieldIsLegal`/dual-wield rules, double-click examine/drag from the doll, and body-part selection lighting | `src/AcDream.App/UI/Layout/PaperdollController.cs` | Basic equip slots, live doll, toggle, optimistic wield, exact DAT body hit map, authoritative upper-item priority, normal selection, and target-self dispatch work | Special slots, invalid drops, doll examine/drag, and selection lighting still differ functionally | `gmPaperDollUI @ 0x004A3590..0x004A5F90`; `InventoryPlacement::DetermineHigherPriority` |
+| AP-108 | Paperdoll/AutoWield still omit Aetheria, full `AutoWieldIsLegal`/dual-wield rules, incompatible-shield/ammo blocker sequencing, double-click examine/drag from the doll, and body-part selection lighting | `src/AcDream.App/UI/Layout/PaperdollController.cs`; `src/AcDream.App/UI/AutoWieldController.cs` | Basic equip slots and live doll work; inventory double-click now faithfully replaces the occupied primary weapon-ready group through server-confirmed dequip→wield in both peace and war | Special slots, illegal/off-hand cases, incompatible shield/ammo auto-removal, doll examine/drag, and selection lighting still differ functionally | `CPlayerSystem::AutoWield @ 0x00560A60`; `gmPaperDollUI @ 0x004A3590..0x004A5F90`; `InventoryPlacement::DetermineHigherPriority` |
 | AP-109 | Character Titles page is inert and live displayed-title/luminance state is absent | `src/AcDream.App/UI/Layout/CharacterStatController.cs`; `CharacterSheetProvider.cs` | Attributes/skills core output is user-accepted | Titles cannot be selected/displayed and level-200 luminance fields are missing | `gmCharacterTitleUI @ 0x0049A610`; `gmStatManagementUI::UpdateExperience @ 0x004F0A70` |
 | AP-110 | Remaining retained gameplay panels and world HUD are absent: advanced-combat powerbar, spellbook/effects/favorite spell bars, residual social/examine/floating chat, quests/map/vitae/options/smartbox, vendor/trade/salvage/tinkering, and D.6 nameplates/floaters | D.5/D.6 roadmap; retained layout registration set | Basic `gmCombatUI` now covers the active M2 melee/missile loop; Wave 10 lands each remaining surface against authoritative state | Large portions of retail gameplay still have no production UI | Named `gm*UI::PostInit` methods and LayoutDesc catalog |
 | ~~AP-111~~ | **RETIRED 2026-07-11 (M2 held-object parenting)** — equipped hand items are no longer omitted from the render world. CreateObject now preserves Placement/Parent/position timestamp bootstrap; live `0xF749` ParentEvent is parsed with retail sequence freshness; a focused render controller resolves `Setup.HoldingLocations`, applies the child's placement frame, and recomposes the separate child entity after every parent animation tick. Pickup retains the weenie's visual metadata for a later wield. | `src/AcDream.Core.Net/Messages/{CreateObject,ParentEvent}.cs`; `src/AcDream.Core/Meshing/EquippedChildAttachment.cs`; `src/AcDream.App/Rendering/EquippedChildRenderController.cs` | — | — | `ClientCombatSystem::GetDefaultCombatMode @ 0x0056B310`; `SmartBox::HandleParentEvent @ 0x004535D0`; `CPhysicsObj::set_parent @ 0x00515A90`; `CPhysicsObj::UpdateChild @ 0x00512D50` |