feat: image storage generalization, user profile, and federation polish

- Replace PosterStorage with generic ImageStorage port (IMAGE_STORAGE_BACKEND/PATH env vars)
- Rename poster-storage crate to image-storage; serve at /images/{*key}
- Add bio and avatar_path to User model (migration 0009_user_profile)
- update_profile use case with avatar upload, mime validation, old avatar cleanup
- GET/PUT /api/v1/profile and GET/POST /settings/profile HTML page
- Enrich AP Person actor with summary, icon, url, discoverable fields
- Store remote actor avatar_url (migration 0010_ap_remote_actor_avatar)
- Shared inbox delivery via collect_inboxes deduplication
- Broadcast Update(Person) to followers on UserUpdated event
- Paginated outbox: OrderedCollection + OrderedCollectionPage with cursor
- Announce/boost tracking in ap_announces table (migration 0011_ap_announces)

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

@@ -2,7 +2,7 @@ use application::ports::{
     ActivityFeedPageData, FollowersPageData, FollowingPageData, HtmlPageContext, HtmlRenderer,
     ImportMappingPageData, ImportPreviewPageData, ImportPreviewRow, ImportProfileView,
     ImportRowStatus, ImportUploadPageData, LoginPageData, MovieDetailPageData, NewReviewPageData,
-    ProfilePageData, RegisterPageData, UsersPageData,
+    ProfilePageData, ProfileSettingsPageData, RegisterPageData, UsersPageData,
 };
 use askama::Template;
 use chrono::Datelike;
@@ -305,6 +305,15 @@ fn bar_height_px(avg_rating: f64) -> i64 {
     (avg_rating / 5.0 * 60.0) as i64
 }
 
+#[derive(Template)]
+#[template(path = "profile_settings.html")]
+struct ProfileSettingsTemplate<'a> {
+    ctx: &'a HtmlPageContext,
+    bio: Option<&'a str>,
+    avatar_url: Option<&'a str>,
+    saved: bool,
+}
+
 #[derive(Template)]
 #[template(path = "import_upload.html")]
 struct ImportUploadTemplate<'a> {
@@ -649,4 +658,18 @@ impl HtmlRenderer for AskamaHtmlRenderer {
         .render()
         .map_err(|e| e.to_string())
     }
+
+    fn render_profile_settings_page(
+        &self,
+        data: ProfileSettingsPageData,
+    ) -> Result<String, String> {
+        ProfileSettingsTemplate {
+            ctx: &data.ctx,
+            bio: data.bio.as_deref(),
+            avatar_url: data.avatar_url.as_deref(),
+            saved: data.saved,
+        }
+        .render()
+        .map_err(|e| e.to_string())
+    }
 }