Add document export file automation

docs/modernization/build-inventory.md

@@ -123,6 +123,9 @@ Known local toolchain state:
 - `pano_cli simulate-document-export` exposes the same pure document-to-PPI
   export, asset-level decode, and document reimport path through JSON
   automation and is covered by `pano_cli_simulate_document_export_smoke`.
+- `pano_cli save-document-project` writes that pure document export to a PPI
+  file and is covered by `pano_cli_save_document_project_roundtrip_smoke`,
+  which inspects and loads the generated file.
 - `pano_cli load-project` creates a `pp_document` projection with per-layer
   frame counts, durations, and decoded face-pixel payloads when present; the
   metadata-only minimal fixture remains covered by
@@ -306,6 +309,8 @@ Known local toolchain state:
   future DEBT-0010/DEBT-0013 task.
 - `pano_cli simulate-document-export` exposes document export round-trip state
   through JSON automation for agent-driven checks.
+- `pano_cli save-document-project` exposes file-writing document export
+  automation for inspect/load round trips.
 - `pp_ui_core` consumes vcpkg tinyxml2 only when `PP_USE_VCPKG_TINYXML2=ON`
   through the vcpkg preset; default and Android validation still use the
   retained vendored fallback tracked by DEBT-0012.

docs/modernization/debt.md

@@ -28,10 +28,10 @@ agent or engineer to remove them without reconstructing context from chat.
 | DEBT-0007 | Open | Modernization | `vcpkg.json` and `windows-msvc-vcpkg-headless` are validated for the headless Windows component matrix, but app targets still use vendored libraries and Android/Apple triplets are not proven | Dependency migration must stay incremental while SDK/patched/vendor dependencies remain in use | `$env:VCPKG_ROOT="C:\Program Files\Microsoft Visual Studio\2022\Community\VC\vcpkg"; cmake --preset windows-msvc-vcpkg-headless`; `ctest --preset desktop-fast-vcpkg --build-config Debug` | Component targets consume vcpkg packages where reliable and desktop app, Android, and Apple triplets are validated or explicitly documented as permanent vendor exceptions |
 | DEBT-0008 | Open | Modernization | `windows-msvc-default` preset is used for local validation because the VS 2026 generator is not installed here | The target VS 2026 preset must remain, but this machine configures with Visual Studio 17 2022 | `cmake --preset windows-msvc-default`; `ctest --preset desktop-fast --build-config Debug` | Validate `windows-vs2026-x64` on a machine with Visual Studio 2026 installed and make it the default Windows validation preset |
 | DEBT-0009 | Open | Modernization | Android root CMake validation currently builds headless targets only, not APK/package variants | Platform app entrypoints still live in legacy Gradle/CMake projects and need Phase 6 alignment | `powershell -ExecutionPolicy Bypass -File scripts\automation\platform-build.ps1 -Presets android-arm64` | Android standard, Quest, and Focus/Wave package targets consume shared component targets and have package smoke commands |
-| DEBT-0010 | Open | Modernization | `pp_document` is a pure layer/frame/document/undo-history model with alpha-lock metadata, snapshot construction, per-layer frame metadata, renderer-free RGBA8 face payload storage, snapshot-embedded face-payload validation, renderer-free alpha8 selection-mask storage, and PPI import/export helpers, but it is not yet wired to legacy `Canvas`, legacy save, or legacy action commands | Keep extraction incremental while preserving app behavior | `ctest --preset desktop-fast --build-config Debug`; `pano_cli create-document --width 64 --height 32 --layers 2`; `pano_cli load-project --path tests\data\projects\minimal-project.ppi`; `pp_document_tests`; `pp_document_ppi_import_tests`; `pp_document_ppi_export_tests`; `pano_cli_simulate_document_edits_smoke`; `pano_cli_simulate_document_export_smoke` | Legacy document behavior is represented by `pp_document` tests and the app consumes it through a boundary/facade |
+| DEBT-0010 | Open | Modernization | `pp_document` is a pure layer/frame/document/undo-history model with alpha-lock metadata, snapshot construction, per-layer frame metadata, renderer-free RGBA8 face payload storage, snapshot-embedded face-payload validation, renderer-free alpha8 selection-mask storage, and PPI import/export helpers, but it is not yet wired to legacy `Canvas`, legacy save, or legacy action commands | Keep extraction incremental while preserving app behavior | `ctest --preset desktop-fast --build-config Debug`; `pano_cli create-document --width 64 --height 32 --layers 2`; `pano_cli load-project --path tests\data\projects\minimal-project.ppi`; `pp_document_tests`; `pp_document_ppi_import_tests`; `pp_document_ppi_export_tests`; `pano_cli_simulate_document_edits_smoke`; `pano_cli_simulate_document_export_smoke`; `pano_cli_save_document_project_roundtrip_smoke` | Legacy document behavior is represented by `pp_document` tests and the app consumes it through a boundary/facade |
 | DEBT-0011 | Open | Modernization | `package-smoke` validates the Windows CMake app artifact only, not AppX/APK/Apple/WebGL package outputs | Platform package targets are not migrated to root CMake yet | `powershell -ExecutionPolicy Bypass -File scripts\automation\package-smoke.ps1 -Preset windows-msvc-default -Configuration Debug` | Package-smoke covers Windows AppX, Android APK variants, Apple bundles, and WebGL output where local toolchains are present |
 | DEBT-0012 | Open | Modernization | `pp_ui_core` uses vcpkg tinyxml2 on `windows-msvc-vcpkg-headless`, but retains `pp_vendor_tinyxml2` for default and unproven platform presets | Mobile/AppX/Apple triplets and app packaging still need validation before removing the vendored fallback | `ctest --preset desktop-fast-vcpkg --build-config Debug`; `ctest --preset desktop-fast --build-config Debug`; `powershell -ExecutionPolicy Bypass -File scripts\automation\platform-build.ps1 -Presets android-arm64` | All supported presets consume vcpkg tinyxml2 or document a permanent vendored exception |
-| DEBT-0013 | Open | Modernization | `pp_assets`, `pp_document`, `pano_cli inspect-project`, `pano_cli load-project`, and `pano_cli save-project` validate the fixed PPI header, thumbnail/body byte layout, generated multi-layer/multi-frame PPI writing with explicit layer opacity/blend/alpha-lock/visibility metadata, per-layer frame durations, metadata-only and targeted dirty-face-payload save/load round-trips, layer/frame index, dirty-face descriptors, dirty-face PNG payload metadata, asset-level RGBA PNG payload decoding, pure document-to-PPI export, CLI document export automation, and decoded pixel attachment to `pp_document`, but full legacy PPI round-trip parity is not yet extracted | Full PPI save parity requires staged extraction of legacy `Canvas` serialization and image/layer payload handling | `ctest --preset desktop-fast --build-config Debug`; `pp_assets_image_pixels_tests`; `pp_assets_ppi_header_tests`; `pp_document_ppi_import_tests`; `pp_document_ppi_export_tests`; `pano_cli_inspect_project_layout_smoke`; `pano_cli_load_project_metadata_smoke`; `pano_cli_save_project_roundtrip_smoke`; `pano_cli_save_project_payload_roundtrip_smoke`; `pano_cli_simulate_document_export_smoke` | Full PPI load/save fixtures cover thumbnails, decoded layer face payloads attached to documents, frames, corrupt payloads, dirty-face payload saving, arbitrary legacy canvas payload/layout combinations, and legacy app round-trip compatibility |
+| DEBT-0013 | Open | Modernization | `pp_assets`, `pp_document`, `pano_cli inspect-project`, `pano_cli load-project`, and `pano_cli save-project` validate the fixed PPI header, thumbnail/body byte layout, generated multi-layer/multi-frame PPI writing with explicit layer opacity/blend/alpha-lock/visibility metadata, per-layer frame durations, metadata-only and targeted dirty-face-payload save/load round-trips, layer/frame index, dirty-face descriptors, dirty-face PNG payload metadata, asset-level RGBA PNG payload decoding, pure document-to-PPI export, CLI document export automation, file-writing document export automation, and decoded pixel attachment to `pp_document`, but full legacy PPI round-trip parity is not yet extracted | Full PPI save parity requires staged extraction of legacy `Canvas` serialization and image/layer payload handling | `ctest --preset desktop-fast --build-config Debug`; `pp_assets_image_pixels_tests`; `pp_assets_ppi_header_tests`; `pp_document_ppi_import_tests`; `pp_document_ppi_export_tests`; `pano_cli_inspect_project_layout_smoke`; `pano_cli_load_project_metadata_smoke`; `pano_cli_save_project_roundtrip_smoke`; `pano_cli_save_project_payload_roundtrip_smoke`; `pano_cli_simulate_document_export_smoke`; `pano_cli_save_document_project_roundtrip_smoke` | Full PPI load/save fixtures cover thumbnails, decoded layer face payloads attached to documents, frames, corrupt payloads, dirty-face payload saving, arbitrary legacy canvas payload/layout combinations, and legacy app round-trip compatibility |
 | DEBT-0014 | Open | Modernization | `windows-clangcl-asan` now configures as a headless Ninja/clang-cl preset and uses the release MSVC runtime required by ASan, but local builds still fail because installed clang-cl 18.1.8 is paired with VS 2026-preview STL headers that require Clang 20 or newer | Sanitizer validation should be local and repeatable, but this machine's compiler/header pairing is incompatible | `cmake --fresh --preset windows-clangcl-asan`; `cmake --build --preset windows-clangcl-asan --target pp_foundation` | Install/use Clang 20+ with the VS 2026 STL, or point the preset at a compatible VS 2022 toolchain, then make `platform-build.ps1 -Presets windows-clangcl-asan` pass for the headless matrix |
 
 ## Closed Debt

docs/modernization/roadmap.md

@@ -355,6 +355,8 @@ bytes using that writer, including PNG-encoded layer/frame face payloads.
 `pano_cli simulate-document-export` exercises that pure document export path,
 decodes the generated PPI bytes, reimports them, and emits JSON round-trip
 metadata.
+`pano_cli save-document-project` writes the same pure document export to a PPI
+file for inspect/load round-trip automation.
 `pano_cli create-document` can create simple animation documents with explicit
 frame count/duration. `pano_cli simulate-document-edits` exercises pure
 layer metadata, frame reordering, active-index preservation, tiny face-payload
@@ -364,6 +366,8 @@ summaries. `pano_cli simulate-image-import` decodes an embedded tiny PNG
 through `pp_assets` and attaches the resulting RGBA8 payload to `pp_document`.
 `pano_cli simulate-document-export` exercises pure document-to-PPI export,
 asset-level PPI image decode, and document reimport in one automation command.
+`pano_cli save-document-project` writes a deterministic pure document export
+PPI and verifies it through inspect/load smoke coverage.
 `pano_cli simulate-stroke` exercises the pure stroke sampler for
 scripted-stroke automation. `pano_cli simulate-stroke-script`
 loads stroke script fixtures, parses them through `pp_paint`, and samples every
@@ -746,6 +750,9 @@ Results:
   `pp_assets` PPI writer can save a compressed RGBA PNG dirty-face payload to
   an explicit layer/frame slot, inspect the serialized descriptor, and reload
   it as decoded `pp_document` face-pixel data.
+- `pano_cli_save_document_project_roundtrip_smoke` passed and proves a pure
+  `pp_document` export can be written to a PPI file, inspected for layer/frame
+  dirty-face descriptors, and loaded back through the PPI import path.
 - `pano_cli_parse_layout_smoke` passed.
 - `pano_cli_simulate_stroke_smoke` passed and reports deterministic stroke
   sample counts/distances.
@@ -824,6 +831,8 @@ Results:
   by DEBT-0010/DEBT-0013.
 - `pano_cli simulate-document-export` exposes the same export path through JSON
   automation for agents.
+- `pano_cli save-document-project` exposes file-writing document export
+  automation for inspect/load round trips.
 - Snapshot creation now rejects invalid embedded RGBA8 face payloads before
   document export or history can persist malformed state.
 - PowerShell package-smoke wrapper validates the Windows CMake app executable