Wire CinematicProposalFileExample into GenerateAllExamples

GenerateAllExamples now produces project-proposal-cinematic.pdf alongside
the other six fixtures so README post-release verification covers the
cinematic visual showcase referenced from the README.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

Author: DemchaAV

examples/src/main/java/com/demcha/examples/GenerateAllExamples.java

@@ -11,6 +11,7 @@ public static void main(String[] args) throws Exception {
         System.out.println("Generated: " + CoverLetterFileExample.generate());
         System.out.println("Generated: " + InvoiceFileExample.generate());
         System.out.println("Generated: " + ProposalFileExample.generate());
+        System.out.println("Generated: " + CinematicProposalFileExample.generate());
         System.out.println("Generated: " + WeeklyScheduleFileExample.generate());
     }
 }