Buzz Desktop v0.3.29

• build: make mesh-llm opt-in for dev/staging to speed up iteration (#1183) (ce526106)
• feat(desktop): default temporary channels to 7-day expiry (#1182) (4b518fc4)
• fix(desktop): render lightbox image sharply at full resolution (#1181) (ff727af9)
• fix(desktop): keep thread guides behind the reply composer (#1179) (781d1acf)
• Sort direct messages alphabetically (#1180) (04df2c8d)
• Add composer selection formatting tray (#1133) (7dcf22d5)
• fix(desktop): honor per-agent relay override, default to workspace relay (#1131) (ea97e219)
• [codex] Stabilize desktop E2E flakes (#1174) (141f7118)
• feat(desktop): show reminder author + source and click-to-navigate in inbox (#1176) (1186ea48)
• Improve inbox thread updates (#1114) (de3f21ab)
• docs(readme): mark git hosting as shipped in status table (#1175) (26fdfb67)
• feat(windows): bundle full Git-for-Windows toolchain for the shell tool (#1145) (592508ad)
• fix(buzz-dev-mcp): resolve MSYS-absolute paths in the Windows file tools (#1169) (ec5cfa37)