asdf

Squash the current repository state back into one baseline commit while
preserving the README reframing and repository contents.

Constraint: User explicitly requested a single squashed commit with subject "asdf"
Confidence: high
Scope-risk: broad
Reversibility: clean
Directive: This commit intentionally rewrites published history; coordinate before future force-pushes
Tested: git status clean; local history rewritten to one commit; force-pushed main to origin and instructkr
Not-tested: Fresh clone verification after push

src/migrations/migrateFennecToOpus.ts

@@ -0,0 +1,45 @@
+import {
+  getSettingsForSource,
+  updateSettingsForSource,
+} from '../utils/settings/settings.js'
+
+/**
+ * Migrate users on removed fennec model aliases to their new Opus 4.6 aliases.
+ * - fennec-latest → opus
+ * - fennec-latest[1m] → opus[1m]
+ * - fennec-fast-latest → opus[1m] + fast mode
+ * - opus-4-5-fast → opus + fast mode
+ *
+ * Only touches userSettings. Reading and writing the same source keeps this
+ * idempotent without a completion flag. Fennec aliases in project/local/policy
+ * settings are left alone — we can't rewrite those, and reading merged
+ * settings here would cause infinite re-runs + silent global promotion.
+ */
+export function migrateFennecToOpus(): void {
+  if (process.env.USER_TYPE !== 'ant') {
+    return
+  }
+
+  const settings = getSettingsForSource('userSettings')
+
+  const model = settings?.model
+  if (typeof model === 'string') {
+    if (model.startsWith('fennec-latest[1m]')) {
+      updateSettingsForSource('userSettings', {
+        model: 'opus[1m]',
+      })
+    } else if (model.startsWith('fennec-latest')) {
+      updateSettingsForSource('userSettings', {
+        model: 'opus',
+      })
+    } else if (
+      model.startsWith('fennec-fast-latest') ||
+      model.startsWith('opus-4-5-fast')
+    ) {
+      updateSettingsForSource('userSettings', {
+        model: 'opus[1m]',
+        fastMode: true,
+      })
+    }
+  }
+}