Require Windows CI to exercise the paused print queue

.github/workflows/print.yml

@@ -23,4 +23,12 @@ jobs:
           components: rustfmt, clippy
       - run: cargo fmt --check
       - run: cargo clippy -p craft-print --all-targets -- -D warnings
+      - name: Prepare the Windows test driver
+        if: runner.os == 'Windows'
+        shell: powershell
+        run: |
+          Start-Service Spooler
+          Add-PrinterDriver -Name 'Generic / Text Only'
       - run: cargo test -p craft-print --locked -- --nocapture
+        env:
+          CRAFT_PRINT_REQUIRE_QUEUE: ${{ runner.os == 'Windows' && '1' || '0' }}

crates/print/README.md

@@ -40,7 +40,9 @@ printer parsing, PPD options and argument mapping. On Windows it also parses the
 PowerShell, checks physical sheet geometry, duplex and raster bounds without hardware,
 renders a mixed-orientation PDF through WinRT, and attempts submission to a temporary paused
 queue. The queue portion explicitly skips if the driver or administrative rights are absent;
-rendering and geometry tests do not skip. Physical printer fidelity remains a hardware check.
+rendering and geometry tests do not skip. Windows CI installs the inbox test driver and sets
+`CRAFT_PRINT_REQUIRE_QUEUE=1`, making queue preparation/submission mandatory on its runner.
+Physical printer fidelity remains a hardware check.
 
 The cross-platform GitHub Actions workflow is defined in `.github/workflows/print.yml`.
 It runs formatting, Clippy and this crate's own tests on Windows, Linux and macOS when print

crates/print/src/tests.rs

@@ -261,6 +261,7 @@ fn the_print_script_renders_the_job_and_reaches_the_spooler() {
         &[("CRAFT_TEST_PRINTER", name)],
     );
     if let Err(why) = added {
+        assert_ne!(std::env::var("CRAFT_PRINT_REQUIRE_QUEUE").as_deref(), Ok("1"), "CI requires a prepared paused printer: {why}");
         eprintln!("skipping the real print: the test printer could not be prepared: {why}");
         return;
     }