A Settings → Claude category sets per-user defaults for NEW sessions: model,
effort, and permission mode (generic schema selects persisting
app.claude.default*). The pane reads them at spawn — effort flows through the
existing --effort flag (SpawnSpec.effort); model and permission mode are sent
as control requests right after a fresh (non-resume, non-fork) session starts.
'default'/unset values are no-ops, leaving the CLI's own defaults.
The optional "settings changed — apply to current sessions?" prompt is filed
as T-470: it needs a custom control (a generic select can't prompt), so it's
a clean follow-up on the T-452 escape hatch.
Tests: defaultEffortFlag sentinel handling; the category contributes the three
default fields. The thin pane-side applySessionDefaults is covered by the gate.
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
jpmschweitzerandClaude Opus 4.8
ea670fd077