alonso.torres 956df575f7 🐛 Fix export detach and the migrations of copies
Fixes in what export does to the copies of libraries it leaves out, and in
the migrations of swap slots and copy texts (Phase 3c).

- Drop library color refs in fills and strokes on detached export.

  The binfile export that detaches libraries drops each reference to another
  file. For colors it read only where the older format kept them
  (:fill-color-ref-file and :stroke-color-ref-file on the shape and on text
  nodes), so a library color ref inside :fills or :strokes, the current
  format, stayed and the exported file pointed at a library it does not
  carry (F57). Every color of the shape, its text nodes included, now goes
  through cts/process-shape-colors, which detaches the ones that refer to
  another file.

  file-test: a fill ref inside :fills is dropped.

- Detach copies by where their refs and components point on export.

  The binfile export that detaches libraries decided for each copy shape
  from one file, the :component-file of the shape or of the closest head
  above it, and then dropped its component and its :shape-ref together
  (F52). That is wrong both ways:
  - a library copy nested in a local component refers, in each copy of that
    component, to the nested copy in the local main; using the head's own
    library, its :shape-ref was dropped, and the next sync treated the shape
    as one the copy added;
  - a dropped link kept :touched, :remote-synced and :main-instance;
  - the shapes stored in deleted components were not detached at all.

  A shape's :shape-ref now points into the file of the component of the top
  head of its copy, or of the closest swapped head above it, and the link
  goes with the shape's other component attributes (ctk/detach-shape) only
  when that file is another one. A head whose own component is in another
  file stops being a head and loses :swap-group, but stays a copy while its
  main shape is in this file. Deleted components' shapes are detached the
  same way.

  file-test: a dropped link loses :touched; a library copy nested in a local
  component keeps its ref in the component's copy, and the file validates; a
  deleted component's nested library copy is detached.

- Follow a swap slot's chain through the pages of its mains.

  find-ref-id-for-swapped, which migration 0010 runs on files older than the
  swap group, walks a swapped shape's ref chain to the main child its swap
  slot names. It read each step's children from the page of the step's own
  component, not from the page the step lives on, so when the mains of a
  nesting sat on different pages it found nothing, and the migration then
  removed a valid slot: the swap was lost (F56). Each step now goes on in
  the container the ref lookup found it in.

  file-test: the original ref of a swap is found with the mains on two
  pages.

- Remove ctf/get-component-container-from-head.

  Its last caller, the swap slot chain walk of migration 0010, now takes
  each step's container from the ref lookup.

- Recompute copy texts touched with the content group alone.

  Files older than the text override groups mark a copy text whose content
  changed with :content-group alone. Sync reads that as nothing touched in
  the text and writes the main's content, so the copy lost its text and
  styles at the next sync of its main (F50). Migration 0034 converted the
  later groups but left this one.

  convert-text-overrides now also converts a copy text with :content-group
  and no text group, reading it as allowing every text group: compared with
  its near main, it takes the groups where it differs (all of them when the
  near main cannot be reached). Migration 0035 runs it on files that already
  passed 0034; a binfile import converts them with the other old text
  groups, deferred as they are.

  convert-text-overrides-test: such a copy takes the letters and styles that
  differ, nothing where nothing differs, and through the migration.
  text-sync-test: once migrated, the copy keeps its text and takes the
  main's new size.

AI-assisted-by: claude-opus-5-5
2026-10-28 15:53:06 +01:00
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