Add 2026 internship work: Qizhe Jiang

[Warrenhimself]

Archives QIZHE JIANG's 2026 internship work on CACP and Costly Escalation under 2026/Qizhe.Jiang/.

• Code: all 18 changed files from feat(cacp): add protocol-enforced costly abort demo logos-execution-zone#704 at b7154ba2bf1d456d544da74b61b9b2149298403e, the complete binary-capable patch, source checksums, commit provenance and full-workspace reproduction instructions.
• Documents: two supplied RFCs and the referenced CACP flowchart. The Markdown files are preserved verbatim, with companion notes distinguishing design examples from implemented demo scope.
• Results: fresh verification results and saved test/build logs. 31 tests passed (8 bond core, 21 cross-zone library, 2 bond-program tests), and both the bond program and demo passed compilation checks. The patch reconstructs the exact source tree from its recorded base.

The source PR remains an open draft and is not merged. This archive preserves that source revision.

The final dissertation is intentionally excluded and will be handled separately.