00:01 Seed S-base
00:27 Settings > General > New threads > Model. Row: "Claude Opus 4.8 · High"
00:30 settings.json defaultModelSelection = {"instanceId":"claudeAgent","model":"claude-opus-4-8","options":[{"id":"effort","value":"high"}]}
00:33 Open the effort picker (currently "High")
00:36 Choose Low
00:39 Picked Low. settings.json now {"instanceId":"claudeAgent","model":"claude-opus-4-8","options":[{"id":"effort","value":"low"}]}
00:41 Reload the page
00:56 After reload. Row: "Claude Opus 4.8 · Low"
01:00 jq .defaultModelSelection settings.json -> {"instanceId":"claudeAgent","model":"claude-opus-4-8","options":[{"id":"effort","value":"low"}]}