Cargo.lock                                             |   2 +
 apps/ios/Snowbound/CanvasView.swift                    |   9 +
 corpus/page-date/README.md                             |  19 +
 corpus/page-date/candidate/Open Notebook.onetoc2       | Bin 0 -> 3764 bytes
 corpus/page-date/candidate/pictures.one                | Bin 0 -> 24184 bytes
 corpus/page-date/cold/commands.jsonl                   |   3 +
 corpus/page-date/cold/machine.json                     |   1 +
 corpus/page-date/cold/notebook/Open Notebook.onetoc2   | Bin 0 -> 3764 bytes
 corpus/page-date/cold/notebook/pictures.one            | Bin 0 -> 24184 bytes
 corpus/page-date/cold/read/environment.json            |   7 +
 corpus/page-date/cold/read/hierarchy.xml               |   2 +
 corpus/page-date/cold/read/page-000.navigation.json    |  13 +
 corpus/page-date/cold/read/page-000.png                | Bin 0 -> 38370 bytes
 corpus/page-date/cold/read/page-000.xml                |   2 +
 corpus/page-date/cold/read/page-001.navigation.json    |  13 +
 corpus/page-date/cold/read/page-001.png                | Bin 0 -> 38046 bytes
 corpus/page-date/cold/read/page-001.xml                |   2 +
 corpus/page-date/cold/read/page-002.navigation.json    |  13 +
 corpus/page-date/cold/read/page-002.png                | Bin 0 -> 38352 bytes
 corpus/page-date/cold/read/page-002.xml                |   6 +
 corpus/page-date/cold/read/payloads.json               |   3 +
 corpus/page-date/cold/run.json                         |  18 +
 corpus/page-date/cold/scripts/cold.ps1                 |  27 ++
 corpus/page-date/cold/scripts/read.ps1                 | 142 ++++++
 corpus/page-date/cold/source.json                      |  14 +
 corpus/page-date/cold/teardown.json                    |   1 +
 corpus/page-date/native/after.xml                      |   2 +
 corpus/page-date/native/before.xml                     |   2 +
 corpus/page-date/native/commands.jsonl                 |   4 +
 corpus/page-date/native/kept.xml                       |   2 +
 corpus/page-date/native/machine.json                   |   1 +
 corpus/page-date/native/notebook/Open Notebook.onetoc2 | Bin 0 -> 3764 bytes
 corpus/page-date/native/notebook/pictures.one          | Bin 0 -> 23208 bytes
 corpus/page-date/native/read/environment.json          |   7 +
 corpus/page-date/native/read/hierarchy.xml             |   2 +
 corpus/page-date/native/read/page-000.xml              |   2 +
 corpus/page-date/native/read/page-001.xml              |   2 +
 corpus/page-date/native/read/page-002.xml              |   6 +
 corpus/page-date/native/read/payloads.json             |   3 +
 corpus/page-date/native/run.json                       |  19 +
 corpus/page-date/native/scripts/author.ps1             |  46 ++
 corpus/page-date/native/scripts/cold.ps1               |  27 ++
 corpus/page-date/native/scripts/read.ps1               | 142 ++++++
 corpus/page-date/native/source.json                    |  14 +
 corpus/page-date/native/teardown.json                  |   1 +
 corpus/page-date/native/update.xml                     |   1 +
 crates/canvas/src/editor.rs                            | 394 +++++++++++++++--
 crates/canvas/src/editor/ops.rs                        | 743 ++++++++++++++++++++++++++++++++
 crates/canvas/src/gpu/page.rs                          |  27 ++
 crates/canvas/src/gpu/page/background.rs               |   5 +
 crates/canvas/src/gpu/page/picture.rs                  |   5 +
 crates/canvas/src/interaction/mod.rs                   |  15 +
 crates/canvas/tests/ops_differential.rs                | 670 ++++++++++++++++++++++++++++
 crates/canvas/tests/structural_roundtrip.rs            |  47 +-
 crates/mobile/Cargo.toml                               |   1 +
 crates/mobile/include/snowbound.h                      |   1 +
 crates/mobile/src/lib.rs                               |  60 ++-
 crates/notebook/README.md                              |   4 +
 crates/notebook/examples/open_probe.rs                 | 236 ++++++++++
 crates/notebook/src/lib.rs                             |  22 +-
 crates/notebook/src/merge.rs                           |   5 +
 crates/notebook/src/working.rs                         | 579 +++++++++++++++++--------
 crates/notebook/tests/session.rs                       |   7 +-
 crates/onestore/src/edit.rs                            |  71 ++-
 crates/onestore/src/op/apply.rs                        |  22 +
 crates/onestore/src/op/lower.rs                        |  28 +-
 crates/onestore/src/op/mod.rs                          |   9 +
 crates/onestore/src/op/model.rs                        |  36 +-
 crates/onestore/src/op/tests.rs                        |  98 +++++
 crates/onestore/src/page/write.rs                      |   3 +
 crates/snowbound/src/macos.rs                          |  14 +
 crates/snowbound/src/main.rs                           | 452 ++++++++++++++-----
 tools/native/page-date.ps1                             |  46 ++
 tools/test_page_date.py                                |  39 ++
 74 files changed, 3857 insertions(+), 362 deletions(-)