Accept + implement ADR-010 frontend plugin hooks (contract 0.7.0)

Four data-only hooks on BasePlugin (get_settings_cards,
get_asset_panels, get_map_overlays, get_asset_presentation) with a
GET-only /api/pluginui consumer surface copying the dashboard-widgets
semantics. Pilots: warranty declares its asset panel; measuringtools
supplies its settings card, presentation, and calibration overlay -
the last hardcoded settings-nav entry is now hook-sourced. Generic
renderers for panels/overlays/presentation deferred per the ADR's
incremental adoption plan (documented in CONTRACT-STABILITY.md).

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>

docs/adr/ADR-010-frontend-plugin-hooks.md

@@ -1,7 +1,8 @@
 # ADR-010: Frontend plugin hook contract
 
-- **Status:** PROPOSED
+- **Status:** ACCEPTED
 - **Date:** 2026-07-11
+- **Accepted:** 2026-07-11
 - **Deciders:** cproudlock
 - **Supersedes:** none
 
@@ -112,7 +113,7 @@ not pursued.
 
 ## Decision
 
-**PROPOSED:** adopt a hybrid. Add **data-only declarative hooks** (Option B) for
+**DECISION:** adopt a hybrid. Add **data-only declarative hooks** (Option B) for
 the four presentation surfaces a generic core renderer can serve, and keep
 **file-convention glob discovery** (Option C) as the deferred mechanism for the
 residual cases where a real component is unavoidable. Do not pursue runtime