personas: elevate to server with per-persona fact scoping

Move personas off the mobile client into ImageApi as first-class
records, and scope entity_facts by persona so each one builds its own
voice over a shared entity graph. The new include_all_memories flag
lets a persona opt back into the full hive-mind pool for human
browsing of /knowledge/*; agentic generation always stays in-voice.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

src/main.rs

@@ -84,6 +84,7 @@ mod video;
 mod knowledge;
 mod memories;
 mod otel;
+mod personas;
 mod service;
 #[cfg(test)]
 mod testhelpers;
@@ -1962,6 +1963,7 @@ fn main() -> std::io::Result<()> {
                 .service(libraries::list_libraries)
                 .add_feature(add_tag_services::<_, SqliteTagDao>)
                 .add_feature(knowledge::add_knowledge_services::<_, SqliteKnowledgeDao>)
+                .add_feature(personas::add_persona_services)
                 .add_feature(faces::add_face_services::<_, faces::SqliteFaceDao>)
                 .add_feature(duplicates::add_duplicate_services)
                 .app_data(app_data.clone())
@@ -1985,6 +1987,9 @@ fn main() -> std::io::Result<()> {
                 .app_data::<Data<Mutex<SqliteKnowledgeDao>>>(Data::new(Mutex::new(
                     SqliteKnowledgeDao::new(),
                 )))
+                .app_data::<Data<Mutex<Box<dyn database::PersonaDao>>>>(Data::new(Mutex::new(
+                    Box::new(database::SqlitePersonaDao::new()),
+                )))
                 .app_data::<Data<Mutex<faces::SqliteFaceDao>>>(Data::new(Mutex::new(face_dao)))
                 .app_data::<Data<crate::ai::face_client::FaceClient>>(Data::new(
                     app_data.face_client.clone(),