Normalize size units and intrinsic sizing across Elisp and native layout. Add help, pointer, hover-style and keymap support with reusable interaction adapters.
Keep content updates local, preserve scroll caches and hover borders, and avoid rebuilding retained plans and ownership metadata for stable geometry.
Validation: make check and native-rust-tests passed; targeted native interaction and scroll publication regressions passed.
Reconcile duplicated native ancestry against the verified equivalent base. Preserve current source ownership, scroll partition, allocated owner rendering, and later retained-state repairs while adapting their consumers and existing fixtures to persistent runtime indexes.
Validation: strict byte compilation of 28 source files, static syntax across 56 Lisp files, cargo check, and native release build passed. Regression suites and benchmarks were not run at the user's direction.
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
Keep the standalone Ebox package focused on its public layout and DSL primitives while the generic ebox-playground package owns executable .ebox references.
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.
