Allow retained logical objects to own multiple marker-backed output fragments without leaking handles or positions into pure plans. Expose only defensive numeric mount snapshots through the public object index.
Verified: 718 ERT tests, 92 doctests, WERROR compile-all, checkdoc, and git diff --check.
Add self-contained Chinese and English TP 1.0 contracts for objects, bindings, anchors, computed values, transactions, and public API levels without requiring a sibling Ebox checkout.
Verification: make doctest EMACS=/Applications/Emacs.app/Contents/MacOS/Emacs LOAD_EXTRA=-L\\ /Users/geekinney/IPARA/3-RESOURCES/emacs/config/github/test/libs; git diff --check; local Markdown link check.
