Fix anchors router to use get_anchors_paginated

Anchors are global, not user-specific. Added paginated db function.

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

app/routers/anchors.py

@@ -36,7 +36,7 @@ async def list_anchors(
         from fastapi.responses import RedirectResponse
         return RedirectResponse(url="/login", status_code=302)
 
-    anchors = await db.get_user_anchors(username, offset=offset, limit=limit)
+    anchors = await db.get_anchors_paginated(offset=offset, limit=limit)
     has_more = len(anchors) >= limit
 
     if wants_json(request):

db.py

@@ -759,6 +759,28 @@ async def get_all_anchors() -> list[dict]:
         return results
 
 
+async def get_anchors_paginated(offset: int = 0, limit: int = 20) -> list[dict]:
+    """Get anchors with pagination, newest first."""
+    async with get_connection() as conn:
+        rows = await conn.fetch(
+            "SELECT * FROM anchors ORDER BY created_at DESC LIMIT $1 OFFSET $2",
+            limit, offset
+        )
+        results = []
+        for row in rows:
+            result = dict(row)
+            if result.get("first_activity_id"):
+                result["first_activity_id"] = str(result["first_activity_id"])
+            if result.get("last_activity_id"):
+                result["last_activity_id"] = str(result["last_activity_id"])
+            if result.get("created_at"):
+                result["created_at"] = result["created_at"].isoformat()
+            if result.get("confirmed_at"):
+                result["confirmed_at"] = result["confirmed_at"].isoformat()
+            results.append(result)
+        return results
+
+
 async def update_anchor_confirmed(merkle_root: str, bitcoin_txid: str) -> bool:
     """Mark anchor as confirmed with Bitcoin txid."""
     async with get_connection() as conn: