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

🤖 Generated with [Claude Code](https://claude.com/claude-code)

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

node_modules/linguist-languages/data/HTML_2b_EEX.js

@@ -0,0 +1,13 @@
+module.exports = {
+  name: 'HTML+EEX',
+  type: 'markup',
+  aceMode: 'html_elixir',
+  extensions: ['.html.eex', '.heex', '.leex'],
+  languageId: 149,
+  tmScope: 'text.html.elixir',
+  aliases: ['eex', 'heex', 'leex'],
+  codemirrorMode: 'htmlmixed',
+  codemirrorMimeType: 'text/html',
+  color: '#6e4a7e',
+  group: 'HTML',
+}