feat(dashboard): add sidebar with Ollama status, trending topics, and article detail panel

Integrate SearXNG news search, Ollama-powered article summarization with
follow-up chat, and a dashboard sidebar showing LLM status, trending
keywords, and recent search history. Sidebar yields to a split-view
article detail panel when a card is selected.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

src/models/news.rs

@@ -1,44 +1,5 @@
 use serde::{Deserialize, Serialize};
 
-/// Categories for classifying AI news articles.
-#[derive(Debug, Clone, PartialEq, Serialize, Deserialize)]
-pub enum NewsCategory {
-    /// Large language model announcements and updates
-    Llm,
-    /// AI agent frameworks and tooling
-    Agents,
-    /// Data privacy and regulatory compliance
-    Privacy,
-    /// AI infrastructure and deployment
-    Infrastructure,
-    /// Open-source AI project releases
-    OpenSource,
-}
-
-impl NewsCategory {
-    /// Returns the display label for a news category.
-    pub fn label(&self) -> &'static str {
-        match self {
-            Self::Llm => "LLM",
-            Self::Agents => "Agents",
-            Self::Privacy => "Privacy",
-            Self::Infrastructure => "Infrastructure",
-            Self::OpenSource => "Open Source",
-        }
-    }
-
-    /// Returns the CSS class suffix for styling category badges.
-    pub fn css_class(&self) -> &'static str {
-        match self {
-            Self::Llm => "llm",
-            Self::Agents => "agents",
-            Self::Privacy => "privacy",
-            Self::Infrastructure => "infrastructure",
-            Self::OpenSource => "open-source",
-        }
-    }
-}
-
 /// A single news feed card representing an AI-related article.
 ///
 /// # Fields
@@ -46,7 +7,8 @@ impl NewsCategory {
 /// * `title` - Headline of the article
 /// * `source` - Publishing outlet or author
 /// * `summary` - Brief summary text
-/// * `category` - Classification category
+/// * `content` - Full content snippet from search results
+/// * `category` - Display label for the search topic (e.g. "AI", "Finance")
 /// * `url` - Link to the full article
 /// * `thumbnail_url` - Optional thumbnail image URL
 /// * `published_at` - ISO 8601 date string
@@ -55,7 +17,8 @@ pub struct NewsCard {
     pub title: String,
     pub source: String,
     pub summary: String,
-    pub category: NewsCategory,
+    pub content: String,
+    pub category: String,
     pub url: String,
     pub thumbnail_url: Option<String>,
     pub published_at: String,