feat: attacker profiles — UUID model, API routes, list/detail frontend

Migrate Attacker model from IP-based to UUID-based primary key with
auto-migration for old schema. Add GET /attackers (paginated, search,
sort) and GET /attackers/{uuid} API routes. Rewrite Attackers.tsx as
a card grid with full threat info and create AttackerDetail.tsx as a
dedicated detail page with back navigation, stats, commands table,
and fingerprints.

tests/test_base_repo.py

@@ -22,8 +22,12 @@ class DummyRepo(BaseRepository):
     async def get_state(self, k): await super().get_state(k)
     async def set_state(self, k, v): await super().set_state(k, v)
     async def get_all_logs_raw(self): await super().get_all_logs_raw()
+    async def get_max_log_id(self): await super().get_max_log_id()
+    async def get_logs_after_id(self, last_id, limit=500): await super().get_logs_after_id(last_id, limit)
     async def get_all_bounties_by_ip(self): await super().get_all_bounties_by_ip()
+    async def get_bounties_for_ips(self, ips): await super().get_bounties_for_ips(ips)
     async def upsert_attacker(self, d): await super().upsert_attacker(d)
+    async def get_attacker_by_uuid(self, u): await super().get_attacker_by_uuid(u)
     async def get_attackers(self, **kw): await super().get_attackers(**kw)
     async def get_total_attackers(self, **kw): await super().get_total_attackers(**kw)
 
@@ -47,7 +51,11 @@ async def test_base_repo_coverage():
     await dr.get_state("k")
     await dr.set_state("k", "v")
     await dr.get_all_logs_raw()
+    await dr.get_max_log_id()
+    await dr.get_logs_after_id(0)
     await dr.get_all_bounties_by_ip()
+    await dr.get_bounties_for_ips({"1.1.1.1"})
     await dr.upsert_attacker({})
+    await dr.get_attacker_by_uuid("a")
     await dr.get_attackers()
     await dr.get_total_attackers()