00:00 Seed S-base
00:24 Settings > General > New threads > Model. Row: "Claude Opus 4.8 · High"
00:26 settings.json defaultModelSelection = {"instanceId":"claudeAgent","model":"claude-opus-4-8","options":[{"id":"effort","value":"high"}]}
00:29 Open the effort picker (currently "High")
00:32 Choose Low
00:35 Picked Low. settings.json now {"instanceId":"claudeAgent","model":"claude-opus-4-8","options":[{"id":"effort","value":"low"}]}
00:37 Reload the page
00:54 After reload. Row: "Claude Opus 4.8 · Low"
00:57 jq .defaultModelSelection settings.json -> {"instanceId":"claudeAgent","model":"claude-opus-4-8","options":[{"id":"effort","value":"low"}]}