Rename the identifiers that carried the upstream name

Everything clients, users and operators meet now carries the fork's name,
with no aliases (SPEC.md §2.4, changed here from "protocol identifiers
stay"):

- JMAP: upstream's registry capability is urn:inbuxa:jmap:registry, beside
  the fork's own urn:inbuxa:jmap.
- WebDAV lock and sync tokens are urn:inbuxa:dav*; clients resync once.
- Sieve: vnd.inbuxa.while and vnd.inbuxa.expressions. sieve-rs spells these
  into its compiler, so it's vendored (vendor/sieve-rs, 0.7.3) and patched in;
  a unit test fails if Cargo.lock ever moves past the vendored copy. The
  trusted runtime now names itself too, rather than answering sieve-rs's
  default.
- The web interface's OAuth client is inbuxa-webui. On every start the old
  stalwart-webui client is removed and any application naming it is moved
  over.
- The spam filter's blobs are INBUXA_SPAM_*; every start moves any left
  under the old keys, so a trained model survives.
- SQL stores and log files default to inbuxa, in the code and in the
  schema served to the admin (checksum regenerated).
- Settings are INBUXA_* only. A STALWART_* variable that's set where its
  INBUXA_* one isn't stops the server at startup, naming it.
- The version-upgrade messages link docs.inbuxa.org's migration page, and
  the OpenAPI description, smtp crate metadata and web-push test fixtures
  lose the name.

Kept on purpose, allowlisted with reasons: the OAuth key-derivation
contexts (renaming them would end every session and invalidate every
sealed client id) and the hashed application prefix.

Also fixes a latent start-up failure: ensure_client updated an existing
first-party client with a revision of 0, which the registry's assertion
never matches, so adding a redirect URI or changing the webmail secret
failed start-up. And the principal session test now expects
legacyProtocols (C-1, added 2026-09-21), which it had missed.

Tested: the server builds without warnings; common's 106 unit tests,
including the vendoring check; a new integration test for the two
start-up migrations; and the webdav, jmap, imap and SMTP Sieve suites.

tests/src/jmap/principal/get.rs

@@ -250,9 +250,10 @@ pub async fn test(test: &TestServer) {
               "webWriteUrlTemplate": null
             },
             "urn:ietf:params:jmap:mail:share": {},
-            "urn:stalwart:jmap": {},
-            // inbuxa: MT-22, the logo that applies to the account
-            "urn:inbuxa:jmap": { "logo": null },
+            "urn:inbuxa:jmap:registry": {},
+            // inbuxa: MT-22, the logo that applies to the account, and
+            // LP-19, whether the legacy protocols are open to it
+            "urn:inbuxa:jmap": { "logo": null, "legacyProtocols": "enabled" },
             "https://www.fastmail.com/dev/maskedemail": {}
           }
         }
@@ -274,7 +275,7 @@ pub async fn test(test: &TestServer) {
         "urn:ietf:params:jmap:principals:availability": john_id,
         "urn:ietf:params:jmap:filenode": john_id,
         "urn:ietf:params:jmap:mail:share": john_id,
-        "urn:stalwart:jmap": john_id,
+        "urn:inbuxa:jmap:registry": john_id,
         "https://www.fastmail.com/dev/maskedemail": john_id
       },
       "username": "[email protected]",

tests/src/lib.rs

@@ -30,6 +30,8 @@ pub mod imap;
 #[cfg(test)]
 pub mod jmap;
 #[cfg(test)]
+pub mod renamed_identifiers; // inbuxa: SPEC.md §2.4
+#[cfg(test)]
 pub mod scim;
 #[cfg(test)]
 pub mod smtp;

tests/src/renamed_identifiers.rs

@@ -0,0 +1,112 @@
+/*
+ * SPDX-FileCopyrightText: 2026 Coffey Labs
+ *
+ * SPDX-License-Identifier: AGPL-3.0-only
+ */
+
+//! inbuxa: what an install from before the rename carries over (SPEC.md
+//! §2.4). The web interface's OAuth client is retired rather than kept as an
+//! alias, and a trained spam filter moves to its new keys.
+
+use crate::utils::server::TestServerBuilder;
+use common::manager::{SPAM_CLASSIFIER_KEY, SPAM_TRAINER_KEY, first_party::WEB_INTERFACE_CLIENT_ID};
+use registry::{
+    schema::{
+        enums::CompressionAlgo,
+        prelude::{ObjectType, Property},
+        structs::{Application, OAuthClient},
+    },
+    types::map::Map,
+};
+
+const OLD_CLIENT_ID: &str = "stalwart-webui";
+const OLD_TRAINER_KEY: &[u8] = b"STALWART_SPAM_TRAIN_DATA.lz4";
+const OLD_CLASSIFIER_KEY: &[u8] = b"STALWART_SPAM_CLASSIFIER_MODEL.lz4";
+
+#[tokio::test(flavor = "multi_thread")]
+async fn renamed_identifiers() {
+    // The web interface registered under upstream's client id, and an
+    // application naming it. Disabled, so nothing is fetched for it.
+    let test = TestServerBuilder::new("renamed_identifiers")
+        .await
+        .with_object(OAuthClient {
+            client_id: OLD_CLIENT_ID.to_string(),
+            redirect_uris: Map::new(vec!["https://127.0.0.1/admin/oauth/callback".to_string()]),
+            ..Default::default()
+        })
+        .await
+        .with_object(Application {
+            enabled: false,
+            description: "Web interface".to_string(),
+            resource_url: "https://127.0.0.1/webui.zip".to_string(),
+            url_prefix: Map::new(vec!["/admin".to_string()]),
+            oauth_client_id: Some(OLD_CLIENT_ID.to_string()),
+            ..Default::default()
+        })
+        .await
+        .disable_services()
+        .build()
+        .await;
+
+    println!("Running renamed identifier tests...");
+    let registry = test.server.registry();
+    assert_eq!(
+        registry
+            .primary_key(
+                ObjectType::OAuthClient.into(),
+                Property::ClientId,
+                OLD_CLIENT_ID.as_bytes().to_vec(),
+            )
+            .await
+            .unwrap(),
+        None,
+        "the pre-rename web interface client is retired on start"
+    );
+    let applications = registry.list::<Application>().await.unwrap();
+    assert_eq!(applications.len(), 1);
+    assert_eq!(
+        applications[0].object.oauth_client_id.as_deref(),
+        Some(WEB_INTERFACE_CLIENT_ID),
+        "an application naming the old client moves to the new one"
+    );
+
+    // A trained model under the pre-rename keys moves to the new ones.
+    let blobs = test.server.blob_store();
+    for (key, data) in [
+        (OLD_TRAINER_KEY, &b"trainer"[..]),
+        (OLD_CLASSIFIER_KEY, &b"classifier"[..]),
+    ] {
+        blobs.put_blob(key, data, CompressionAlgo::None).await.unwrap();
+    }
+    migration::try_migrate(&test.server).await.unwrap();
+    for (old, new, data) in [
+        (OLD_TRAINER_KEY, SPAM_TRAINER_KEY, &b"trainer"[..]),
+        (OLD_CLASSIFIER_KEY, SPAM_CLASSIFIER_KEY, &b"classifier"[..]),
+    ] {
+        assert_eq!(blobs.get_blob(new, 0..usize::MAX).await.unwrap().as_deref(), Some(data));
+        assert_eq!(blobs.get_blob(old, 0..usize::MAX).await.unwrap(), None);
+    }
+
+    // A blob already under the new key wins over a stale old one.
+    blobs
+        .put_blob(OLD_CLASSIFIER_KEY, b"stale", CompressionAlgo::None)
+        .await
+        .unwrap();
+    migration::try_migrate(&test.server).await.unwrap();
+    assert_eq!(
+        blobs
+            .get_blob(SPAM_CLASSIFIER_KEY, 0..usize::MAX)
+            .await
+            .unwrap()
+            .as_deref(),
+        Some(&b"classifier"[..])
+    );
+    assert_eq!(blobs.get_blob(OLD_CLASSIFIER_KEY, 0..usize::MAX).await.unwrap(), None);
+
+    // With nothing left to move, starting again changes nothing.
+    migration::try_migrate(&test.server).await.unwrap();
+    assert_eq!(
+        blobs.get_blob(SPAM_TRAINER_KEY, 0..usize::MAX).await.unwrap().as_deref(),
+        Some(&b"trainer"[..])
+    );
+}

tests/src/system/ai.rs

@@ -479,7 +479,7 @@ pub async fn test(test: &mut TestServer) {
         .await;
     stub.set(Mode::Echo);
     user.activate_script(concat!(
-        "require [\"vnd.stalwart.expressions\", \"editheader\", \"variables\"];\n",
+        "require [\"vnd.inbuxa.expressions\", \"editheader\", \"variables\"];\n",
         "let \"a\" \"llm_prompt('echo-test', 'hello world', 0.5)\";\n",
         "let \"b\" \"llm_prompt('no-such-model', 'x', 0.5)\";\n",
         "addheader \"X-Llm-Echo\" \"${a}\";\n",

tests/src/utils/jmap.rs

@@ -2,6 +2,8 @@
  * SPDX-FileCopyrightText: 2020 Stalwart Labs LLC <[email protected]>
  *
  * SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-SEL
+ *
+ * Modified by Coffey Labs in 2026 for INBUXA.
  */
 
 use crate::utils::account::Account;
@@ -408,7 +410,7 @@ impl Account {
             "urn:ietf:params:jmap:principals:availability",
             "urn:ietf:params:jmap:filenode",
             "urn:ietf:params:jmap:mail:share",
-            "urn:stalwart:jmap"
+            "urn:inbuxa:jmap:registry"
           ],
           "methodCalls": calls
         });

tests/src/webdav/lock.rs

@@ -2,6 +2,8 @@
  * SPDX-FileCopyrightText: 2020 Stalwart Labs LLC <[email protected]>
  *
  * SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-SEL
+ *
+ * Modified by Coffey Labs in 2026 for INBUXA.
  */
 
 use crate::utils::{server::TestServer, webdav::GenerateTestDavResource};
@@ -45,7 +47,7 @@ pub async fn test(test: &TestServer) {
 
         // Test 2: Refreshing a lock token with an invalid a lock token should fail
         client
-            .lock_refresh(&path, "urn:stalwart:davlock:1234", "infinity", "Second-456")
+            .lock_refresh(&path, "urn:inbuxa:davlock:1234", "infinity", "Second-456")
             .await
             .with_status(StatusCode::PRECONDITION_FAILED);
 
@@ -148,7 +150,7 @@ pub async fn test(test: &TestServer) {
 
         // Test 10: Unlock with and without a lock token
         client
-            .unlock(&path, "urn:stalwart:davlock:1234")
+            .unlock(&path, "urn:inbuxa:davlock:1234")
             .await
             .with_status(StatusCode::CONFLICT)
             .with_value("D:error.D:lock-token-matches-request-uri", "");