v0.21.0

What's Changed

• fix(terminal): restore terminal modes after reconnect (09c2caa)
• feat(web-session): split workflow mode and permission levels (d0d4086)
• refactor: drive terminal sidebar state from backend snapshots (7f715ef)
• feat: persist terminal snapshots across route switches (04b78fe)
• fix(ui): remember last workspace page after refresh (7b48265)
• fix(ui): render web session tools in timeline order (73c8daa)
• feat(ui): add resizable project sidebar (612f9d3)

Full Changelog: v0.20.0...v0.21.0