Briar v1.2.92

What's Changed

• docs: publish v1.2.91 changelog by @siisee11 in #792
• test(ios): expect canonical dispatch request ID by @siisee11 in #793
• feat: release iOS TestFlight 1.2.91 build 1 by @siisee11 in #794
• feat(ios): add channel message image attachments by @siisee11 in #795
• feat(ios): auto-select last project on app load by @siisee11 in #796
• feat: common LLM attachments by @siisee11 in #797
• feat: update usage dashboard by @siisee11 in #799
• fix(ios): preserve project menu at accessibility sizes by @siisee11 in #798
• feat(agents): continue completed sessions with follow-ups by @siisee11 in #800
• chore: release v1.2.92 by @siisee11 in #801

Full Changelog: v1.2.91...v1.2.92