Core Rule Set: Vaultwarden's ordinary requests pass by default (closes #239)

Adds vaultwarden.conf, the twelfth change. On Vaultwarden's account,
organization and admin paths, names and password hints skip 930120,
932120, 932250 and 932260, and email addresses skip 932120 and 932260.
The data breach report's address does too. The encrypted names of uploaded
attachments and file sends skip 920120. Requests recorded from
Vaultwarden 1.37.5 through the web vault, the Bitwarden command line
client and the admin page pass at the defaults and while bodies are read.

Model: opus-5-5

README.md

@@ -581,22 +581,24 @@ client's limits by tag. See "Request tags" in [`SPEC.md`](SPEC.md).
   headers of every request, and no body unless `SWW_WAF_BODY_LIMIT` is set. In
   front of a code forge, bodies carry what people write and publish, which the
   rules take for attacks.
-- `smallwebwaf` changes the Core Rule Set in eleven ways so that ordinary
-  requests get through to a code forge, to WordPress, to Drupal and to
-  MediaWiki. They include git over HTTP and sign-in through Git Credential
-  Manager on a code forge, and saving a post from the block editor on WordPress.
-  On gitea's own paths, its searches, file names and branch names get through
-  too. On WordPress's own paths, its searches, names and file names do. On
-  Drupal's own paths, the page to return to, its searches and its names get
+- `smallwebwaf` changes the Core Rule Set in twelve ways so that ordinary
+  requests get through to a code forge, to WordPress, to Drupal, to MediaWiki
+  and to Vaultwarden. They include git over HTTP and sign-in through Git
+  Credential Manager on a code forge, and saving a post from the block editor on
+  WordPress. On gitea's own paths, its searches, file names and branch names get
+  through too. On WordPress's own paths, its searches, names and file names do.
+  On Drupal's own paths, the page to return to, its searches and its names get
   through too. On MediaWiki's own paths, its searches, page titles, names and
-  wikitext do. No setting undoes the changes; "Attack detection" in
-  [`SPEC.md`](SPEC.md) lists them.
+  wikitext do. On Vaultwarden's own paths, its names, password hints, email
+  addresses and encrypted file names do. No setting undoes the changes; "Attack
+  detection" in [`SPEC.md`](SPEC.md) lists them.
 - These apps work out of the box at the default settings, and their recorded
   ordinary requests pass the Core Rule Set:
     - gitea;
     - WordPress;
     - Drupal;
-    - MediaWiki.
+    - MediaWiki;
+    - Vaultwarden.
 - `SWW_CORE_RULE_SET_EXCLUSIONS_FILE` switches single rules off for an app's own
   fields or paths.
 - Rule files are plain text, one rule to a line, edited by hand and read again