Initial braindump app implementation

Create a complete braindump note-taking application with Dioxus 0.7 featuring:
- Note capture with title, content, and tags
- Full CRUD operations (create, read, update, delete)
- Search functionality for notes
- Tag-based filtering
- Note pinning for quick access
- Modern dark theme with purple accents
- Responsive sidebar layout
- Clean card-based note list
- Full-text editor with auto-save hint

Implemented with:
- Dioxus 0.7.1 fullstack for reactive UI and server functions
- Workspace pattern with shared API crate
- In-memory storage using LazyLock
- Server functions for note management

All core features working and ready for testing.

packages/ui/assets/styling/echo.css

@@ -0,0 +1,34 @@
+#echo {
+  width: 360px;
+  margin-left: auto;
+  margin-right: auto;
+  margin-top: 50px;
+  background-color: #1e222d;
+  padding: 20px;
+  border-radius: 10px;
+}
+
+#echo>h4 {
+  margin: 0px 0px 15px 0px;
+}
+
+
+#echo>input {
+  border: none;
+  border-bottom: 1px white solid;
+  background-color: transparent;
+  color: #ffffff;
+  transition: border-bottom-color 0.2s ease;
+  outline: none;
+  display: block;
+  padding: 0px 0px 5px 0px;
+  width: 100%;
+}
+
+#echo>input:focus {
+  border-bottom-color: #6d85c6;
+}
+
+#echo>p {
+  margin: 20px 0px 0px auto;
+}

packages/ui/assets/styling/hero.css

@@ -0,0 +1,35 @@
+#hero {
+  margin: 0;
+  display: flex;
+  flex-direction: column;
+  justify-content: center;
+  align-items: center;
+}
+
+#links {
+  width: 400px;
+  text-align: left;
+  font-size: x-large;
+  color: white;
+  display: flex;
+  flex-direction: column;
+}
+
+#links a {
+  color: white;
+  text-decoration: none;
+  margin-top: 20px;
+  margin: 10px 0px;
+  border: white 1px solid;
+  border-radius: 5px;
+  padding: 10px;
+}
+
+#links a:hover {
+  background-color: #1f1f1f;
+  cursor: pointer;
+}
+
+#header {
+  max-width: 1200px;
+}

packages/ui/assets/styling/navbar.css

@@ -0,0 +1,16 @@
+#navbar {
+  display: flex;
+  flex-direction: row;
+}
+
+#navbar a {
+  color: #ffffff;
+  margin-right: 20px;
+  text-decoration: none;
+  transition: color 0.2s ease;
+}
+
+#navbar a:hover {
+  cursor: pointer;
+  color: #91a4d2;
+}