Stage 17: backend defect fixes (nudge code, TG name, robot names/timing, multi-device push, move-duration metric + admin analytics)

- #3 nudge-on-own-turn: distinct result code nudge_own_turn + i18n (was reused 'not_your_turn')
- #2 sanitize connector registration name to the editable format; Player/Игрок-XXXXX fallback
- #5 variant-aware robot name pools (composed full/colloquial first + surname forms; ru gets <=20% latin)
- #4 move-number-aware robot move timing (early 1-5min -> late 10-90min, skew k=4)
- #7 emit move event to the actor too (multi-device sync); opponent_moved stays in-app only
- #1 live game_move_duration{variant,phase} histogram + admin console per-user min/avg/max columns and an inline-SVG move-time-by-move-number chart (offline from the journal)
- ProvisionRobot bypasses editor name validation (system names like 'Peter J.')

backend/internal/adminconsole/views.go

@@ -1,5 +1,7 @@
 package adminconsole
 
+import "html/template"
+
 // The *View types are the display models the gin handlers fill and the templates
 // render. Time values are pre-formatted to strings by the handlers so the
 // templates stay logic-free.
@@ -50,14 +52,19 @@ type UsersView struct {
 	Pager Pager
 }
 
-// UserRow is one account row in the list.
+// UserRow is one account row in the list. MoveMin/Avg/Max are the account's
+// pre-formatted move-duration summary (empty when it has no timed move).
 type UserRow struct {
-	ID          string
-	DisplayName string
-	Kind        string
-	Language    string
-	Guest       bool
-	CreatedAt   string
+	ID           string
+	DisplayName  string
+	Kind         string
+	Language     string
+	Guest        bool
+	CreatedAt    string
+	HasMoveStats bool
+	MoveMin      string
+	MoveAvg      string
+	MoveMax      string
 }
 
 // UserDetailView is one account with its stats, identities and recent games.
@@ -80,6 +87,9 @@ type UserDetailView struct {
 	Games            []GameRow
 	TelegramID       string
 	ConnectorEnabled bool
+	// MoveChart is the pre-rendered inline SVG of the account's per-move-number think
+	// time (min/mean/max), empty when the account has no timed move.
+	MoveChart template.HTML
 }
 
 // StatsRow is an account's lifetime statistics.