SCIM: users, groups, queries, PATCH, Bulk and cursors at /scim/v2, over x:Account (SCIM-1 to SCIM-57)

Every SCIM operation becomes the x:Account get, query or set JMAP makes,
as the service principal, so permissions, tenant scope and limits,
address uniqueness and account destruction are enforced in one place.
Discovery is anonymous; everything else takes an API key as a bearer
token and nothing else. Domains open to SCIM carry a flag in the domain
cache. Filters take eq and and, answered from the account indexes, with
unindexed attributes checked on at most 200 candidates. Cursors are
stateless, HMAC-sealed under the server key. PATCH applies to the
resource in memory and saves it as a PUT, so it is all or nothing.
Groups get an address from their display name on the principal's
domain; membership is written on each user.

Every write emits one of five new scim.* events (ids 637 to 641), also
added to the packaged schema. The helpers the surviving SCIM suites
import are rebuilt from the spec; scim_tests runs the new acceptance
suite and the surviving tenant isolation suite, and both pass.

crates/common/src/auth/access_token.rs

@@ -796,6 +796,14 @@ impl AccessToken {
 }
 
 impl AccessTokenInner {
+    /// inbuxa: SCIM-27: the account's own effective permission, from its
+    /// roles, its own settings and its tenant, before a credential narrows it
+    pub fn account_has_permission(&self, permission: Permission) -> bool {
+        self.scopes
+            .first()
+            .is_some_and(|scope| scope.permissions.get(permission as usize))
+    }
+
     pub fn from_id(account_id: u32) -> Self {
         Self {
             account_id,