ios + ir cleanup

- ios: --target ios/ios-sim shorthands, iOS SDK auto-discovery,
  #framework directive + BuildOptions.add_framework hook,
  .app bundle + Info.plist + codesign (ad-hoc and real),
  --codesign-identity/--provisioning-profile/--entitlements flags,
  modules/std/{objc,uikit}.sx, dynamic class registration,
  typed objc_msgSend cast pattern, UIApplicationMain handoff,
  UIWindow scene attach. Runs on iPhone hardware.
- ir: silent .s64 defaults → loud diagnostics,
  resolveReturnType infers from body, sub-byte int sizes match LLVM,
  tuple type interning includes names, compile errors exit 1
- issue-NNNN convention: resolved bugs rename to focused features
- 50 regression tests passing

src/core.zig

@@ -121,6 +121,12 @@ pub const Compilation = struct {
         return &.{};
     }
 
+    /// Get frameworks accumulated from #run build blocks (BuildOptions.add_framework).
+    pub fn getBuildFrameworks(self: *Compilation) []const []const u8 {
+        if (self.ir_emitter) |*e| return e.build_config.frameworks.items;
+        return &.{};
+    }
+
     /// Get output path set from #run build blocks, if any.
     pub fn getBuildOutputPath(self: *Compilation) ?[]const u8 {
         if (self.ir_emitter) |*e| return e.build_config.output_path;