00:00 Seed S-haiku45 (Haiku 4.5 has no effort control)
00:21 Settings > General > New threads > Model. Row: "Claude Haiku 4.5 · Thinking On"
00:23 settings.json defaultModelSelection = {"instanceId":"claudeAgent","model":"claude-haiku-4-5"}
00:26 Effort controls on the row: 1
00:31 Model picker: search "Opus 4.8"
00:34 Picked Opus 4.8. settings.json = {"instanceId":"claudeAgent","model":"claude-opus-4-8"}
00:40 Model picker: search "Haiku 4.5"
00:43 Picked Haiku 4.5 again. settings.json = {"instanceId":"claudeAgent","model":"claude-haiku-4-5"}
00:46 Reload the page
01:00 After reload. Row: "Claude Haiku 4.5 · Thinking On"
01:02 jq .defaultModelSelection settings.json -> {"instanceId":"claudeAgent","model":"claude-haiku-4-5"}