Add comprehensive reminder/alarm support to calendar events

- Backend: Parse VALARM components from CalDAV iCalendar data
- Backend: Add EventReminder struct with minutes_before, action, and description
- Backend: Support Display, Email, and Audio reminder types
- Backend: Parse ISO 8601 duration triggers (-PT15M, -P1D, etc.)
- Frontend: Add reminders field to CalendarEvent structure
- Frontend: Display reminders in event modal with human-readable formatting
- Frontend: Show reminder timing (15 minutes before, 1 day before) and action type
- Fix: Update Trunk.toml to properly copy CSS files to dist directory

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

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

backend/src/debug_caldav.rs

@@ -0,0 +1,61 @@
+use crate::calendar::CalDAVClient;
+use crate::config::CalDAVConfig;
+
+pub async fn debug_caldav_fetch() -> Result<(), Box<dyn std::error::Error>> {
+    let config = CalDAVConfig::from_env()?;
+    let client = CalDAVClient::new(config);
+    
+    println!("=== DEBUG: CalDAV Fetch ===");
+    
+    // Discover calendars
+    let calendars = client.discover_calendars().await?;
+    println!("Found {} calendars: {:?}", calendars.len(), calendars);
+    
+    if let Some(calendar_path) = calendars.first() {
+        println!("Fetching events from: {}", calendar_path);
+        
+        // Make the raw REPORT request
+        let report_body = r#"<?xml version="1.0" encoding="utf-8" ?>
+<c:calendar-query xmlns:d="DAV:" xmlns:c="urn:ietf:params:xml:ns:caldav">
+    <d:prop>
+        <d:getetag/>
+        <c:calendar-data/>
+    </d:prop>
+    <c:filter>
+        <c:comp-filter name="VCALENDAR">
+            <c:comp-filter name="VEVENT"/>
+        </c:comp-filter>
+    </c:filter>
+</c:calendar-query>"#;
+
+        let url = format!("{}{}", client.config.server_url.trim_end_matches('/'), calendar_path);
+        println!("Request URL: {}", url);
+        
+        let response = client.http_client
+            .request(reqwest::Method::from_bytes(b"REPORT").unwrap(), &url)
+            .header("Authorization", format!("Basic {}", client.config.get_basic_auth()))
+            .header("Content-Type", "application/xml")
+            .header("Depth", "1")
+            .header("User-Agent", "calendar-app/0.1.0")
+            .body(report_body)
+            .send()
+            .await?;
+        
+        println!("Response status: {}", response.status());
+        let body = response.text().await?;
+        println!("Response body length: {}", body.len());
+        println!("First 500 chars of response: {}", &body[..std::cmp::min(500, body.len())]);
+        
+        // Try to parse it
+        let events = client.parse_calendar_response(&body)?;
+        println!("Parsed {} events", events.len());
+        
+        for (i, event) in events.iter().enumerate() {
+            println!("Event {}: {}", i+1, event.summary.as_deref().unwrap_or("No title"));
+            println!("  Start: {}", event.start);
+            println!("  UID: {}", event.uid);
+        }
+    }
+    
+    Ok(())
+}