Rename blocklists to IP lists and add IP lookup flags (closes #233)

The answer field is now ip_lists, the package internal/iplist and the
state directory iplists. No compatibility is kept for the old names.

Every IP lookup result gains a flags object with is_tor and is_bogon.
The largest list file accepted is now 200 MiB.

Model: opus-5-5

TODO.md

@@ -41,9 +41,6 @@ https://git.eeqj.de/sneak/routewatch/issues/225, also on `next`, takes the peers
 whose sessions go down together out of the table in one walk. A 24-hour run of
 `9bd0e91` on the live feed is checking whether any handler still drops updates.
 
-One question waits for sneak: which fields the IP lookup answer gains
-(https://git.eeqj.de/sneak/routewatch/issues/203).
-
 The order of the project's remaining work is kept on
 https://git.eeqj.de/sneak/routewatch/issues/86.
 
@@ -56,6 +53,11 @@ problem the run finds.
 
 # Completed Steps
 
+- 2026-11-10: each result of the IP lookup has a `flags` object with `is_tor`
+  and `is_bogon`. The public IP lists are named `ip_lists` in the answer,
+  `internal/iplist` in the code and `iplists` in the state directory. A list
+  file may be up to 200 MiB (closes
+  https://git.eeqj.de/sneak/routewatch/issues/233).
 - 2026-11-05: the prefix page lists the prefix's origin changes, newest first.
   The routing table records each change, and the prefix handler writes them to a
   new `origin_changes` table. The database maintainer prunes each prefix to its