Fix bin/publish: copy docs.dist from project root

Fix bin/publish: use correct .env path for rspade_system
Fix bin/publish script: prevent grep exit code 1 from terminating script

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

vendor/spatie/ignition/node_modules/postcss-image-set-function/CHANGELOG.md

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+# Changes to PostCSS image-set() Function
+
+### 4.0.6 (February 5, 2022)
+
+- Improved `es module` and `commonjs` compatibility
+
+### 4.0.5 (January 31, 2022)
+
+- Fix sourcemaps for `image-set()` function
+
+### 4.0.4 (January 2, 2022)
+
+- Removed Sourcemaps from package tarball.
+- Moved CLI to CLI Package. See [announcement](https://github.com/csstools/postcss-plugins/discussions/121).
+
+### 4.0.3 (December 13, 2021)
+
+- Changed: now uses `postcss-value-parser` for parsing.
+- Updated: documentation
+- Added: support for lists of `image-set` functions.
+- Fixed: `url` function is now always added around string values in `image-set` functions.
+
+### 4.0.2 (November 19, 2021)
+
+- Updated: `postcss-value-parser` to 6.0.1 (patch)
+
+### 4.0.1 (November 18, 2021)
+
+- Added: Safeguards against postcss-values-parser potentially throwing an error.
+
+### 4.0.0 (September 17, 2021)
+
+- Updated: Support for PostCS 8+ (major).
+- Updated: Support for Node 12+ (major).
+
+### 3.0.1 (September 18, 2018)
+
+- Updated: PostCSS Values Parser 2
+
+### 3.0.0 (September 17, 2018)
+
+- Updated: Support for PostCSS 7+
+- Updated: Support for Node 6+
+
+### 2.0.0 (May 7, 2018)
+
+- Sort images by DPR and use the lowest as the default
+
+### 1.0.0 (May 2, 2018)
+
+- Initial version