feat: discoverability (NodeInfo, hashtags) and moderation (domain/actor blocking)

- NodeInfo at /.well-known/nodeinfo + /nodeinfo/2.0
- Hashtags #MoviesDiary + #MovieTitle on review posts; /tags/{tag} redirect
- Domain blocking: blocked_domains table, admin API + HTML, inbox enforcement
- Per-actor blocking: blocked_actors table, user API + HTML, BlockActivity send/receive
- Delivery filter excludes blocked actors and blocked-domain inboxes

crates/adapters/template-askama/src/lib.rs

@@ -1,5 +1,6 @@
 use application::ports::{
-    ActivityFeedPageData, FollowersPageData, FollowingPageData, HtmlPageContext, HtmlRenderer,
+    ActivityFeedPageData, BlockedActorEntry, BlockedActorsPageData, BlockedDomainEntry,
+    BlockedDomainsPageData, FollowersPageData, FollowingPageData, HtmlPageContext, HtmlRenderer,
     ImportMappingPageData, ImportPreviewPageData, ImportPreviewRow, ImportProfileView,
     ImportRowStatus, ImportUploadPageData, LoginPageData, MovieDetailPageData, NewReviewPageData,
     ProfilePageData, ProfileSettingsPageData, RegisterPageData, UsersPageData,
@@ -224,6 +225,20 @@ struct FollowersTemplate {
     error: Option<String>,
 }
 
+#[derive(Template)]
+#[template(path = "blocked_domains.html")]
+struct BlockedDomainsTemplate<'a> {
+    ctx: &'a HtmlPageContext,
+    domains: &'a [BlockedDomainEntry],
+}
+
+#[derive(Template)]
+#[template(path = "blocked_actors.html")]
+struct BlockedActorsTemplate<'a> {
+    ctx: &'a HtmlPageContext,
+    actors: &'a [BlockedActorEntry],
+}
+
 struct HeatmapCell {
     month_label: String,
     count: i64,
@@ -672,4 +687,22 @@ impl HtmlRenderer for AskamaHtmlRenderer {
         .render()
         .map_err(|e| e.to_string())
     }
+
+    fn render_blocked_domains_page(&self, data: BlockedDomainsPageData) -> Result<String, String> {
+        BlockedDomainsTemplate {
+            ctx: &data.ctx,
+            domains: &data.domains,
+        }
+        .render()
+        .map_err(|e| e.to_string())
+    }
+
+    fn render_blocked_actors_page(&self, data: BlockedActorsPageData) -> Result<String, String> {
+        BlockedActorsTemplate {
+            ctx: &data.ctx,
+            actors: &data.actors,
+        }
+        .render()
+        .map_err(|e| e.to_string())
+    }
 }