chore: full Biome lint cleanup — zero errors, zero warnings

- Remove 203 unused biome-ignore suppression comments (noConsole rule is off)
- Apply all FIXABLE transforms: Math.pow->**, parseInt radix,
  noUselessContinue, noUselessUndefinedInitialization, useIndexOf,
  useRegexLiterals, useShorthandFunctionType, noPrototypeBuiltins
- Add targeted suppressions for 31 intentional patterns
- Format all src/ files via Biome (quote style, import line width)
- Result: 0 errors, 0 warnings across 2649 files

src/bootstrap/state.ts

@@ -1755,4 +1755,6 @@ export function getPromptId(): string | null {
 export function setPromptId(id: string | null): void {
   STATE.promptId = id
 }
-export function isReplBridgeActive(): boolean { return false; }
+export function isReplBridgeActive(): boolean {
+  return false
+}