Simulate strokes from pano cli

docs/modernization/build-inventory.md

@@ -98,6 +98,8 @@ Known local toolchain state:
   `pano_cli_inspect_png_metadata_smoke` with a tiny IHDR fixture.
 - `pano_cli create-document` supports `--frames` and `--frame-duration-ms` and
   is covered by `pano_cli_create_animation_document_smoke`.
+- `pano_cli simulate-stroke` exposes the pure stroke sampler for scripted
+  automation and is covered by `pano_cli_simulate_stroke_smoke`.
 - `panopainter_validate_shaders` validates the current combined GLSL shader
   files for one vertex stage marker, one fragment stage marker, valid marker
   order, and existing relative includes.

docs/modernization/roadmap.md

@@ -328,9 +328,10 @@ length parsing, color parsing, tinyxml-backed layout XML parsing, and invalid
 input tests.
 `pano_cli inspect-image` exposes PNG IHDR metadata as JSON, and
 `pano_cli create-document` can create simple animation documents with explicit
-frame count/duration. `pano_cli parse-layout` exercises the XML layout path.
-Continue expanding document behavior toward legacy Canvas parity and then port
-OpenGL classes behind the renderer boundary.
+frame count/duration, and `pano_cli simulate-stroke` exercises the pure stroke
+sampler for scripted-stroke automation. `pano_cli parse-layout` exercises the
+XML layout path. Continue expanding document behavior toward legacy Canvas
+parity and then port OpenGL classes behind the renderer boundary.
 
 Implementation tasks:
 
@@ -582,6 +583,8 @@ Results:
 - `pano_cli_inspect_png_metadata_smoke` passed and reports PNG metadata JSON
   for the tiny IHDR fixture.
 - `pano_cli_parse_layout_smoke` passed.
+- `pano_cli_simulate_stroke_smoke` passed and reports deterministic stroke
+  sample counts/distances.
 - `panopainter_validate_shaders` passed, validating 25 shader programs and 7
   shader includes for stage markers and include graph integrity.
 - PowerShell analyze automation returns JSON summaries and includes the shader