Initial import of LogDarioSeq baseline

Establishes version control for the personal Logseq DB fork before
starting the server-client architecture migration and domain features
described in docs/agent-guide and the approved implementation plan.

Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>

postcss.config.js

@@ -0,0 +1,14 @@
+const { stripIOSWebFontSourcesPlugin } = require('./scripts/lib/postcss-strip-ios-web-font-sources.cjs')
+
+const mobileCssBuild = process.argv.some((arg) => arg.endsWith('tailwind.mobile.css'))
+
+module.exports = {
+  plugins: [
+    require('postcss-import-ext-glob')(),
+    require('postcss-import')(),
+    require('postcss-nested')(),
+    require('@tailwindcss/postcss')({ optimize: false }),
+    ...(mobileCssBuild ? [stripIOSWebFontSourcesPlugin()] : []),
+    ...(process.env.NODE_ENV === 'production' ? [require('cssnano')()] : [])
+  ]
+}