Compile CSS-like selectors to TP structured ASTs and make TP the sole final matcher while Ebox retains logical tree adaptation and candidate indexes. Separate logical selector types from raw runtime type counts so internal flex adapters still drive bounded scroll scheduling without leaking into selector semantics.\n\nVerified: make check EMACS=/Applications/Emacs.app/Contents/MacOS/Emacs
Make TP the sole owner of live-buffer text-property publication, mount spans, scoped diff execution, and transaction rollback. Ebox now computes layout owners and retained surface plans, publishes handle/viewport/theme/scroll changes through TP, and keeps its mirrored runtime state transactionally consistent. Remove the former Ebox marker/index/patch executor instead of preserving a second mutation path.\n\nVerification:\n- make ci EMACS=/Applications/Emacs.app/Contents/MacOS/Emacs\n- make package-lint-install EMACS=/Applications/Emacs.app/Contents/MacOS/Emacs\n- strict byte compilation passed for 16 files\n- Ebox production has no tp-- private calls or marker writers\n- TP production has no Ebox dependency
Assign retained TP identity before layout and emit pure, runtime-free surface plans with exact character and text-property equivalence. Keep live publication unchanged for the staged cutover and add focused surface, package, docs, and CI contracts.\n\nVerified: make check EMACS=/Applications/Emacs.app/Contents/MacOS/Emacs\nVerified: WERROR byte compilation for all 16 active Lisp files\nVerified: focused ebox-surface checkdoc has zero warnings
Render auto-width grid children at their resolved track widths before resolving row heights. This keeps wrapped content visible and prevents stale intrinsic heights from clipping the final line.
Verification: make grid-tests EMACS=/Applications/Emacs.app/Contents/MacOS/Emacs; make compile EMACS=/Applications/Emacs.app/Contents/MacOS/Emacs; make check EMACS=/Applications/Emacs.app/Contents/MacOS/Emacs.
Measure auto-width children intrinsically, constrain them to resolved tracks, account for border-box wrapper content, and align every rendered line before painting the wrapper border.
Keep the standalone Ebox package focused on its public layout and DSL primitives while the generic ebox-playground package owns executable .ebox references.
Measure every rendered line when a column determines its natural width so a narrower first Grid line cannot cause later lines to overflow after stack padding.\n\nVerified with make check; core 545/545 and Grid 11/11 passed.
Split the verified renderer, layout engine, Grid support, native boundary, tests, examples, and paired documentation into the independent Ebox repository. Keep ETAF and application concerns outside this package.
