Version 2026.9.20, and an install.sh that tells the truth

brand_version! goes to 2026.9.20 (SPEC.md 2.6: YYYY.M.D), the version this
release is tagged at. Verified from the built binary rather than the
source: --version prints "2026.9.20 (Stalwart 0.16.22)" and --help leads
with "INBUXA Server 2026.9.20 (Stalwart 0.16.22)".

install.sh still said "See https://inbuxa.org once it's up", which stopped
being true when the site went up this morning, and offered nothing but a
cargo line. It now names both ways to build, says what a server with no
configuration does, and points at the releases page and the docs.

The installer it stands in for is still unbuilt (SPEC.md 6.1), and the
script says so plainly: an installer trusted with a mail host is not a
thing to improvise, so it declines rather than half-doing one.

README: inbuxa.org is up, so stop saying it is not, and link the docs.

README.md

@@ -11,7 +11,7 @@
 **INBUXA** is a mail and collaboration server: JMAP, IMAP, POP3, SMTP,
 CalDAV, CardDAV and WebDAV, in one Rust binary, with ihasmail as its web front
 end. It is a fork of [Stalwart](https://github.com/stalwartlabs/stalwart).
-Project site: [inbuxa.org](https://inbuxa.org) (not up yet).
+Project site: [inbuxa.org](https://inbuxa.org). Documentation: [docs.inbuxa.org](https://docs.inbuxa.org).
 
 Stalwart ships some features only in a paid Enterprise Edition: multi-tenancy,
 masked email, undelete and others. INBUXA ships everything to everybody under

crates/types/src/branding.rs

@@ -71,12 +71,12 @@ pub fn env_var(name: &str) -> Result<String, std::env::VarError> {
 #[macro_export]
 macro_rules! brand_version {
     () => {
-        "2026.9.18"
+        "2026.9.20"
     };
 }
 
 /// The version with the Stalwart release it's built on, e.g.
-/// `2026.9.18 (Stalwart 0.16.22)`. The base comes from Cargo, which follows
+/// `2026.9.20 (Stalwart 0.16.22)`. The base comes from Cargo, which follows
 /// upstream, so it's always the base actually compiled in. It matters because
 /// Stalwart's data upgrades are one-way. Once INBUXA stops tracking upstream,
 /// this becomes just the version.

install.sh

@@ -3,10 +3,24 @@
 # SPDX-License-Identifier: AGPL-3.0-only
 #
 # Upstream's install.sh downloads Stalwart's release binaries from GitHub, so
-# it would install Stalwart, not INBUXA. It's replaced with this notice until
+# it would install Stalwart, not INBUXA. It is replaced with this notice.
-# INBUXA publishes releases of its own.
+#
+# A single-command installer is specified (docs/spec/SPEC.md 6.1) and is still
+# to be built. Until it lands there is no unattended install to run, and this
+# script says so rather than half-doing one: an installer that is trusted with
+# a mail host is not a thing to improvise.
 
-echo "INBUXA has no releases yet, so there is nothing to install." >&2
+echo "INBUXA has no unattended installer yet." >&2
-echo "Build from source instead:  cargo build --release -p inbuxa" >&2
+echo >&2
-echo "See https://inbuxa.org once it's up." >&2
+echo "Build the server from source:" >&2
+echo "    cargo build --release -p inbuxa" >&2
+echo >&2
+echo "Or build the container image from this tree:" >&2
+echo "    docker build -t inbuxa ." >&2
+echo >&2
+echo "A server started with no configuration comes up in bootstrap mode;" >&2
+echo "INBUXA Admin's setup wizard completes first boot over JMAP." >&2
+echo >&2
+echo "Releases:  https://github.com/inbuxa/inbuxa-server/releases" >&2
+echo "Docs:      https://docs.inbuxa.org/install/fresh/" >&2
 exit 1