.doc import: inline pictures, floating pictures and basic shapes (#551) (#558)

* .doc import: inline pictures, floating pictures and basic shapes (#551)

Word 97-2003 files kept their text but dropped every picture and drawing.
Pictures and drawings are now read from the OfficeArt records ([MS-DOC],
[MS-ODRAW]):

- Inline pictures: the PICF's OfficeArtInlineSpContainer (MM_SHAPE /
  MM_SHAPEFILE) and its FBSE/BLIP, with crop and alt text from the shape
  properties; the older raw-image path stays as a fallback.
- Floating pictures and shapes: PlcSpaMom/PlcSpaHdr anchors joined with
  the shapes of the OfficeArtContent drawings (fcDggInfo), placed by the
  SPA bounds, bx/by or posrelh/posrelv/posh/posv, wrap type and
  fBelowText; rotation and flips; pictures from the BLIP store.
- Shapes: rectangle, rounded rectangle, ellipse, diamond, triangles, star,
  block arrows, heart, lines/connectors, with fill/line colour and width;
  groups flattened into one group space; text boxes linked to their
  PlcftxbxTxt story parts by spid.
- BLIPs: PNG, JPEG, TIFF as-is, DIB converted to PNG, EMF/WMF inflated
  (the metafile renderer draws them), PICT kept as a sized placeholder.
- Hostile input: record lengths clamped to their parent, nesting depth
  and record counts capped, decompression size-limited, picture bytes
  capped per document as before.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

* Review fixes for #558: miniz_oxide as a workspace dependency

Restores the change @echelon pushed in 04b59287, which a rebase dropped: miniz_oxide is declared once in the root [workspace.dependencies] and docbin uses it with workspace = true.

Co-Authored-By: Claude Sonnet 5.5 <noreply@anthropic.com>

---------

Co-authored-by: Claude Opus 5.5 <noreply@anthropic.com>
Co-authored-by: Brandon Thomas <echelon@gmail.com>

Cargo.lock

@@ -5056,7 +5056,9 @@ name = "wordcraft-docbin"
 version = "0.5.0"
 dependencies = [
  "cfb",
+ "image",
  "log",
+ "miniz_oxide 0.8.9",
  "proptest",
  "serde_json",
  "thiserror 2.0.21",