00:00 Seed S-opus45-xhigh (opus-4-5 saved with xhigh, which it does not offer)
00:24 Settings > General > New threads > Model. Row: "Claude Opus 4.5 · High"
00:26 settings.json defaultModelSelection = {"instanceId":"claudeAgent","model":"claude-opus-4-5","options":[{"id":"effort","value":"xhigh"}]}
00:29 Open the effort picker without choosing (label "High")
00:32 Close it with Escape (no choice made)
00:34 settings.json = {"instanceId":"claudeAgent","model":"claude-opus-4-5","options":[{"id":"effort","value":"xhigh"}]}
00:37 Reload the page
00:53 After reload. Row: "Claude Opus 4.5 · High"
00:56 jq .defaultModelSelection settings.json -> {"instanceId":"claudeAgent","model":"claude-opus-4-5","options":[{"id":"effort","value":"xhigh"}]}
00:59 Now choose Max
01:04 Reload the page
01:20 After reload. Row: "Claude Opus 4.5 · Max"
01:22 jq .defaultModelSelection settings.json -> {"instanceId":"claudeAgent","model":"claude-opus-4-5","options":[{"id":"effort","value":"max"}]}