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/hooks/useTerminalSize.ts

@@ -0,0 +1,15 @@
+import { useContext } from 'react'
+import {
+  type TerminalSize,
+  TerminalSizeContext,
+} from 'src/ink/components/TerminalSizeContext.js'
+
+export function useTerminalSize(): TerminalSize {
+  const size = useContext(TerminalSizeContext)
+
+  if (!size) {
+    throw new Error('useTerminalSize must be used within an Ink App component')
+  }
+
+  return size
+}