fix(pdf): make backend text shaping opt-in

Cargo.toml

@@ -13,7 +13,7 @@ repository = "https://github.com/storytold/craft-libs"
 [workspace.dependencies]
 # internal: add each crate here as `craft-<name> = { path = "crates/<name>" }`
 craft-pdf = { path = "crates/pdf", version = "=0.1.0" }
-krilla = "=0.8.2"
+krilla = { version = "=0.8.2", default-features = false, features = ["raster-images"] }
 thiserror = "2"
 craft-atomic = { path = "crates/atomic" }
 craft-cms = { path = "crates/cms" }

crates/pdf/Cargo.toml

@@ -14,6 +14,7 @@ workspace = true
 default = []
 write = ["dep:krilla", "dep:thiserror"]
 write-pdf = ["write", "krilla/pdf"]
+write-simple-text = ["write", "krilla/simple-text"]
 
 [dependencies]
 krilla = { workspace = true, optional = true }

crates/pdf/README.md

@@ -5,10 +5,12 @@ layout, shaping, font selection and licensing, tagging, colour policy, print pre
 export presets and postprocessing. There is no GUI or application dependency.
 
 Features are explicit: `default = []`; `write` enables authoring; `write-pdf` additionally
-supports embedding existing PDF pages. WordCraft, DeckCraft and VectorCraft use `write`.
+supports embedding existing PDF pages. WordCraft and VectorCraft use `write`.
+Applications that call Krilla's `draw_text`, such as DeckCraft, also need `write-simple-text`.
 DesignCraft uses `write-pdf` for placed PDF pages and book composition. Plain `write` does
-not enable Hayro parsing, interpretation or its image codecs; Krilla's existing raster-image
-and simple-text support remain enabled. Reading dependencies used to inspect test outputs
+not enable Hayro parsing, interpretation or its image codecs. Krilla's raster-image support
+remains enabled, while its optional text shaper is enabled only by `write-simple-text`.
+Applications that supply shaped glyphs do not need that feature. Reading dependencies used to inspect test outputs
 are dev-only. A reader migration can be reviewed and adopted separately.
 
 The writer pins Krilla 0.8.2, with a local unwind-cleanup patch documented in