feat: per-entity federation privacy toggles for reviews and watchlist

- add federate_reviews + federate_watchlist to UserSettings (default true)
- new UserFederationSettingsQuery port with FederationFlags struct
- remove get_user_federate_goals from LocalApContentQuery
- gate ReviewLogged, ReviewUpdated, WatchlistEntryAdded, on_poster_synced on flags
- goals gating migrated to UserFederationSettingsQuery
- ReviewDeleted and WatchlistEntryRemoved ungated (tombstones always fire)
- sqlite + postgres migrations and adapter impls
- settings API and SPA toggles

crates/domain/src/models/user_settings.rs

@@ -4,27 +4,34 @@ use crate::value_objects::UserId;
 pub struct UserSettings {
     user_id: UserId,
     federate_goals: bool,
+    federate_reviews: bool,
+    federate_watchlist: bool,
 }
 
 impl UserSettings {
     pub fn new(user_id: UserId) -> Self {
         Self {
             user_id,
-            federate_goals: false,
+            federate_goals: true,
+            federate_reviews: true,
+            federate_watchlist: true,
         }
     }
 
-    pub fn from_persistence(user_id: UserId, federate_goals: bool) -> Self {
+    pub fn from_persistence(
+        user_id: UserId,
+        federate_goals: bool,
+        federate_reviews: bool,
+        federate_watchlist: bool,
+    ) -> Self {
         Self {
             user_id,
             federate_goals,
+            federate_reviews,
+            federate_watchlist,
         }
     }
 
-    pub fn set_federate_goals(&mut self, value: bool) {
-        self.federate_goals = value;
-    }
-
     pub fn user_id(&self) -> &UserId {
         &self.user_id
     }
@@ -32,4 +39,24 @@ impl UserSettings {
     pub fn federate_goals(&self) -> bool {
         self.federate_goals
     }
+
+    pub fn set_federate_goals(&mut self, value: bool) {
+        self.federate_goals = value;
+    }
+
+    pub fn federate_reviews(&self) -> bool {
+        self.federate_reviews
+    }
+
+    pub fn set_federate_reviews(&mut self, value: bool) {
+        self.federate_reviews = value;
+    }
+
+    pub fn federate_watchlist(&self) -> bool {
+        self.federate_watchlist
+    }
+
+    pub fn set_federate_watchlist(&mut self, value: bool) {
+        self.federate_watchlist = value;
+    }
 }