Route desktop writes and CLI raster exports through the engine atomic writer. Add actual-caller regressions for reader visibility, private modes, symlinks and valid long filenames.
Follow-up to #485.
PR #614.
Asking for help is not an error, but `designcraft-cli --help` shared the
catch-all arm with unknown commands, so it wrote the usage block to
stderr and exited 1 — unusable in a pipeline and wrong by convention
(`--version` already exits 0).
Split the arm: `--help`, `-h` and `help` now print the same usage block
to stdout and succeed, while an unknown command keeps it on stderr and
still fails. The usage text and links line are hoisted into a shared
`USAGE` const and `usage_footer()` so the two paths can't drift.
Fixes#243🤖 Generated with Codebuff
Co-authored-by: Codebuff <noreply@codebuff.com>
Co-authored-by: Brandon Thomas <echelon@gmail.com>
Co-authored-by: Claude Opus 5.5 <noreply@anthropic.com>
* CLI: run rejects an export option with no export after it (#67)
--page, --scale and --pdf-options apply to the exports that follow them; one
given after the last --export or --all-pages did nothing and said nothing.
The usage text and docs/agents.md say so.
* MCP: document that text offsets and story lengths are UTF-8 bytes (#68)
* MCP: docs name the UI-only commands precisely; app.links works headless (#62)
* README: PDF and EPUB export ship (#60)
`designcraft-cli commands | head -1` panicked and exited with status 101:
thread 'main' panicked at library/std/src/io/stdio.rs:1168:9:
failed printing to stdout: Broken pipe (os error 32)
println! panics when stdout is closed. Output now goes through outln!, which
ends the program with status 0 on a broken pipe (the reader has what it
wanted) and reports any other write error on stderr with status 1.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
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