ci: Fix extra bracket in commit shorthash

Add support for the m.replace and m.reference bundled
aggregations.
This should fix plenty of subtle client issues.
Threads are not included in the new code as they have
historically been written to the database. Replacing the
old system would result in issues when switching away from
continuwuity, so saved for later.
Some TODOs have been left re event visibility and ignored users.
These should be OK for now, though.

SECURITY.md

@@ -20,10 +20,10 @@ We may backport fixes to the previous release at our discretion, but we don't gu
 
 We appreciate the efforts of security researchers and the community in identifying and reporting vulnerabilities. To ensure that potential vulnerabilities are addressed properly, please follow these guidelines:
 
-1. **Contact members of the team directly** over E2EE private message.
+1. Contact members of the team over E2EE private message.
    - [@jade:ellis.link](https://matrix.to/#/@jade:ellis.link)
    - [@nex:nexy7574.co.uk](https://matrix.to/#/@nex:nexy7574.co.uk) <!-- ? -->
-2. **Email the security team** at [security@continuwuity.org](mailto:security@continuwuity.org). This is not E2EE, so don't include sensitive details.
+2. **Email the security team** directly at [security@continuwuity.org](mailto:security@continuwuity.org). This is not E2EE, so don't include sensitive details.
 3. **Do not disclose the vulnerability publicly** until it has been addressed
 4. **Provide detailed information** about the vulnerability, including:
    - A clear description of the issue
@@ -48,7 +48,7 @@ When you report a security vulnerability:
 
 When security vulnerabilities are identified:
 
-1. We will develop and test fixes in a private fork
+1. We will develop and test fixes in a private branch
 2. Security updates will be released as soon as possible
 3. Release notes will include information about the vulnerabilities, avoiding details that could facilitate exploitation where possible
 4. Critical security updates may be backported to the previous stable release

src/admin/debug/mod.rs

@@ -125,13 +125,13 @@ pub(super) enum DebugCommand {
 		reset: bool,
 	},
 
-	/// - Sign JSON blob
+	/// - Verify json signatures
 	///
 	/// This command needs a JSON blob provided in a Markdown code block below
 	/// the command.
 	SignJson,
 
-	/// - Verify JSON signatures
+	/// - Verify json signatures
 	///
 	/// This command needs a JSON blob provided in a Markdown code block below
 	/// the command.

src/core/config/check.rs

@@ -219,15 +219,6 @@ pub fn check(config: &Config) -> Result {
 		));
 	}
 
-	// Check if support contact information is configured
-	if config.well_known.support_email.is_none() && config.well_known.support_mxid.is_none() {
-		warn!(
-			"No support contact information (support_email or support_mxid) is configured in \
-			 the well_known section. Users in the admin room will be automatically listed as \
-			 support contacts in the /.well-known/matrix/support endpoint."
-		);
-	}
-
 	if config
 		.url_preview_domain_contains_allowlist
 		.contains(&"*".to_owned())