feat(inbound-api): ApiMethod.TraceAllCalls (entity, migration, mgmt command, CLI --trace-all-calls)

Flow Debugger (design 2026-09-05 §5.2): bit NOT NULL DEFAULT 0 column + EF migration
20260906034113 with its docs/plans/sql production twin. CreateApiMethodCommand gains
TraceAllCalls=false; UpdateApiMethodCommand gains bool? TraceAllCalls (null = unchanged so an
older CLI never resets it). Management result echoes the flag; CLI create/update expose
--trace-all-calls; README carries the ~7-rows-per-call warning.

Claude-Session: https://claude.ai/code/session_01GSLkkHKz9JrAtmJjmQK3cP

src/ZB.MOM.WW.ScadaBridge.ManagementService/ManagementActor.cs

@@ -3447,7 +3447,8 @@ public class ManagementActor : ReceiveActor
         {
             TimeoutSeconds = cmd.TimeoutSeconds,
             ParameterDefinitions = cmd.ParameterDefinitions,
-            ReturnDefinition = cmd.ReturnDefinition
+            ReturnDefinition = cmd.ReturnDefinition,
+            TraceAllCalls = cmd.TraceAllCalls
         };
         await repo.AddApiMethodAsync(method);
         await repo.SaveChangesAsync();
@@ -3468,6 +3469,8 @@ public class ManagementActor : ReceiveActor
         method.TimeoutSeconds = cmd.TimeoutSeconds;
         method.ParameterDefinitions = cmd.ParameterDefinitions;
         method.ReturnDefinition = cmd.ReturnDefinition;
+        if (cmd.TraceAllCalls is { } traceAllCalls)
+            method.TraceAllCalls = traceAllCalls;
         await repo.UpdateApiMethodAsync(method);
         await repo.SaveChangesAsync();
         // The persisted DB row is authoritative: on a compile failure the method returns
@@ -3531,6 +3534,7 @@ public class ManagementActor : ReceiveActor
         method.ParameterDefinitions,
         method.ReturnDefinition,
         method.TimeoutSeconds,
+        method.TraceAllCalls,
         compileWarning,
     };