feat(ap): ActivityPub spec compliance and profile completeness

Phase 1 — spec compliance:
- Add AS_PUBLIC constant; add to/cc fields to CreateActivity, DeleteActivity,
  UpdateActivity, AddActivity; populate on all broadcast call sites
- Add @context to outbox CreateActivity items
- Set manuallyApprovesFollowers: true to match actual Pending follow flow
- Gate PermissiveVerifier behind FEDERATION_DEBUG env var
- Add updated timestamp to Person actor JSON
- Improve actor update delivery logging

Phase 2a Batch 1 — AP layer:
- Add /inbox shared inbox route; add endpoints.sharedInbox to Person
- Paginate followers and following collections (20/page, OrderedCollectionPage)

Phase 2a Batch 2 — profile completeness:
- DB migrations: banner_path, also_known_as columns; user_profile_fields table
- ProfileField value object; UserProfileFieldsRepository port
- Banner image upload (stored via image-converter, surfaced as image in Person)
- alsoKnownAs field in Person (account migration support)
- Custom profile fields (up to 4 PropertyValue attachments in Person)
- Profile settings UI: banner preview/upload, alsoKnownAs input, fields form
- PUT /api/v1/profile/fields API endpoint

crates/adapters/sqlite/.sqlx/query-11f7dd8da277aaf950e2a428f8e072cde8d806ca5b4007bbc882aada5c46ae63.json

@@ -0,0 +1,12 @@
+{
+  "db_name": "SQLite",
+  "query": "DELETE FROM user_profile_fields WHERE user_id = ?",
+  "describe": {
+    "columns": [],
+    "parameters": {
+      "Right": 1
+    },
+    "nullable": []
+  },
+  "hash": "11f7dd8da277aaf950e2a428f8e072cde8d806ca5b4007bbc882aada5c46ae63"
+}

crates/adapters/sqlite/.sqlx/query-1dd3efb043635e638f1c3d72923a4ccfb9c9810baee06cfac5ad4af5749e4c6e.json

@@ -1,6 +1,6 @@
 {
   "db_name": "SQLite",
-  "query": "SELECT id, email, username, password_hash, role, bio, avatar_path FROM users WHERE id = ?",
+  "query": "SELECT id, email, username, password_hash, role, bio, avatar_path, banner_path, also_known_as FROM users WHERE username = ?",
   "describe": {
     "columns": [
       {
@@ -37,6 +37,16 @@
         "name": "avatar_path",
         "ordinal": 6,
         "type_info": "Text"
+      },
+      {
+        "name": "banner_path",
+        "ordinal": 7,
+        "type_info": "Text"
+      },
+      {
+        "name": "also_known_as",
+        "ordinal": 8,
+        "type_info": "Text"
       }
     ],
     "parameters": {
@@ -49,8 +59,10 @@
       false,
       false,
       true,
+      true,
+      true,
       true
     ]
   },
-  "hash": "d6c6b579a18fb106e62148f5f85b8071fceefea51909ace939ae1d09c4597c43"
+  "hash": "1dd3efb043635e638f1c3d72923a4ccfb9c9810baee06cfac5ad4af5749e4c6e"
 }

crates/adapters/sqlite/.sqlx/query-5bde1c64a1dec54f348058c9d93842676aa3149bdfc4012f3f3318677a56336d.json

@@ -0,0 +1,12 @@
+{
+  "db_name": "SQLite",
+  "query": "INSERT INTO user_profile_fields (id, user_id, name, value, position) VALUES (?, ?, ?, ?, ?)",
+  "describe": {
+    "columns": [],
+    "parameters": {
+      "Right": 5
+    },
+    "nullable": []
+  },
+  "hash": "5bde1c64a1dec54f348058c9d93842676aa3149bdfc4012f3f3318677a56336d"
+}

crates/adapters/sqlite/.sqlx/query-5e447e9558515934d8f0c08e91342c0df0b29101223f370a126fb0ee76e3b9bd.json

@@ -0,0 +1,26 @@
+{
+  "db_name": "SQLite",
+  "query": "SELECT name, value FROM user_profile_fields WHERE user_id = ? ORDER BY position ASC",
+  "describe": {
+    "columns": [
+      {
+        "name": "name",
+        "ordinal": 0,
+        "type_info": "Text"
+      },
+      {
+        "name": "value",
+        "ordinal": 1,
+        "type_info": "Text"
+      }
+    ],
+    "parameters": {
+      "Right": 1
+    },
+    "nullable": [
+      false,
+      false
+    ]
+  },
+  "hash": "5e447e9558515934d8f0c08e91342c0df0b29101223f370a126fb0ee76e3b9bd"
+}

crates/adapters/sqlite/.sqlx/query-7cb37c7e3df2a945859e12a186a479b9f9f431691d5f0e4ee460cd559f5412b4.json

@@ -1,6 +1,6 @@
 {
   "db_name": "SQLite",
-  "query": "SELECT id, email, username, password_hash, role, bio, avatar_path FROM users WHERE email = ?",
+  "query": "SELECT id, email, username, password_hash, role, bio, avatar_path, banner_path, also_known_as FROM users WHERE email = ?",
   "describe": {
     "columns": [
       {
@@ -37,6 +37,16 @@
         "name": "avatar_path",
         "ordinal": 6,
         "type_info": "Text"
+      },
+      {
+        "name": "banner_path",
+        "ordinal": 7,
+        "type_info": "Text"
+      },
+      {
+        "name": "also_known_as",
+        "ordinal": 8,
+        "type_info": "Text"
       }
     ],
     "parameters": {
@@ -49,8 +59,10 @@
       false,
       false,
       true,
+      true,
+      true,
       true
     ]
   },
-  "hash": "1edf77b936b825139735e4f92bc472031e3231235ca5fe40732d7bdfddc4cbba"
+  "hash": "7cb37c7e3df2a945859e12a186a479b9f9f431691d5f0e4ee460cd559f5412b4"
 }

crates/adapters/sqlite/.sqlx/query-e6413dcabae4a72628a2abf33a8b65da6f95b7c3c015f2633fcf00c045b9f08b.json

@@ -1,6 +1,6 @@
 {
   "db_name": "SQLite",
-  "query": "SELECT id, email, username, password_hash, role, bio, avatar_path FROM users WHERE username = ?",
+  "query": "SELECT id, email, username, password_hash, role, bio, avatar_path, banner_path, also_known_as FROM users WHERE id = ?",
   "describe": {
     "columns": [
       {
@@ -37,6 +37,16 @@
         "name": "avatar_path",
         "ordinal": 6,
         "type_info": "Text"
+      },
+      {
+        "name": "banner_path",
+        "ordinal": 7,
+        "type_info": "Text"
+      },
+      {
+        "name": "also_known_as",
+        "ordinal": 8,
+        "type_info": "Text"
       }
     ],
     "parameters": {
@@ -49,8 +59,10 @@
       false,
       false,
       true,
+      true,
+      true,
       true
     ]
   },
-  "hash": "1417a8a295bc966637eb7e68e088148a7bef09fb1a3c3ea44d25da32c3908472"
+  "hash": "e6413dcabae4a72628a2abf33a8b65da6f95b7c3c015f2633fcf00c045b9f08b"
 }