Enforce LF line endings for Unix artifacts via .gitattributes

A shell script, .desktop, .rules, or .spec file checked out with CRLF (Windows
with core.autocrlf=true) breaks when run/parsed on Linux — a
`#!/usr/bin/env bash\r` shebang is a "bad interpreter" error, and the Linux
package would ship broken scripts. Pin these (and other text) to LF, and mark
binary assets (png/gz/traineddata) so they are never converted. Also harden
the packaging/wayland structural tests to strip CR defensively.

Co-Authored-By: Claude Fable 5 <[email protected]>

.gitattributes

@@ -0,0 +1,24 @@
+# Normalize line endings. Unix artifacts MUST stay LF: a shell script or
+# desktop/udev/spec file checked out with CRLF (e.g. on Windows with
+# core.autocrlf=true) fails to run on Linux — `#!/usr/bin/env bash\r` is a
+# "bad interpreter" error, and .desktop/.rules parsers choke on trailing \r.
+* text=auto eol=lf
+
+*.sh          text eol=lf
+*.desktop     text eol=lf
+*.rules       text eol=lf
+*.spec        text eol=lf
+*.xml         text eol=lf
+control.in    text eol=lf
+*.js          text eol=lf
+*.mjs         text eol=lf
+*.cjs         text eol=lf
+*.json        text eol=lf
+*.md          text eol=lf
+launcher.sh   text eol=lf
+
+# Binary assets must never be line-ending converted.
+*.png         binary
+*.ico         binary
+*.gz          binary
+*.traineddata binary

tests/unit/packaging-linux.test.js

@@ -6,7 +6,8 @@ const fs = require('node:fs');
 const path = require('node:path');
 
 const ROOT = path.resolve(__dirname, '..', '..');
-const read = (rel) => fs.readFileSync(path.join(ROOT, rel), 'utf8');
+// Strip CR so /^...$/m assertions are robust to CRLF checkouts on Windows CI.
+const read = (rel) => fs.readFileSync(path.join(ROOT, rel), 'utf8').replace(/\r\n/g, '\n');
 const exists = (rel) => fs.existsSync(path.join(ROOT, rel));
 
 // These are structural checks that run in the normal (cross-platform) unit

tests/unit/wayland-honesty.test.js

@@ -9,7 +9,8 @@ const { chooseCaptureTrigger, detectLinuxCapabilities } = require('../../app/pla
 const platform = require('../../app/platform');
 
 const ROOT = path.resolve(__dirname, '..', '..');
-const read = (rel) => fs.readFileSync(path.join(ROOT, rel), 'utf8');
+// Strip CR so assertions are robust to CRLF checkouts on Windows CI.
+const read = (rel) => fs.readFileSync(path.join(ROOT, rel), 'utf8').replace(/\r\n/g, '\n');
 const exists = (rel) => fs.existsSync(path.join(ROOT, rel));
 
 // ---- honest trigger decisions ----------------------------------------------