Clean up verbose debug logging from backend server

- Remove emoji debug logs from event deduplication process
- Remove verbose RRULE consolidation logging
- Remove "found X events with title Y" spam logs
- Keep essential functionality intact
- Maintain clean production server logs

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

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

backend/src/handlers/ics_fetcher.rs

@@ -485,7 +485,6 @@ fn parse_datetime_with_tz(datetime_str: &str, tzid: Option<&str>) -> Option<Date
 fn deduplicate_events(mut events: Vec<VEvent>) -> Vec<VEvent> {
     use std::collections::HashMap;
     
-    let original_count = events.len();
     
     // First pass: Group by UID and prefer recurring events over single events with same UID
     let mut uid_groups: HashMap<String, Vec<VEvent>> = HashMap::new();
@@ -547,13 +546,12 @@ fn deduplicate_events(mut events: Vec<VEvent>) -> Vec<VEvent> {
     
     let mut deduplicated_recurring = Vec::new();
     
-    for (title, events_with_title) in title_groups.drain() {
+    for (_title, events_with_title) in title_groups.drain() {
         if events_with_title.len() == 1 {
             // Single event with this title, keep as-is
             deduplicated_recurring.push(events_with_title.into_iter().next().unwrap());
         } else {
             // Multiple events with same title - consolidate or deduplicate
-            println!("🔍 Found {} events with title '{}'", events_with_title.len(), title);
             
             // Check if these are actually different recurring patterns for the same logical event
             let consolidated = consolidate_same_title_events(events_with_title);
@@ -580,15 +578,9 @@ fn deduplicate_events(mut events: Vec<VEvent>) -> Vec<VEvent> {
             let existing_completeness = event_completeness_score(existing_event);
             
             if current_completeness > existing_completeness {
-                println!("🔄 Replacing single event: Keeping '{}' over '{}'",
-                    event.summary.as_ref().unwrap_or(&"No Title".to_string()),
-                    existing_event.summary.as_ref().unwrap_or(&"No Title".to_string())
-                );
                 deduplicated_single[existing_index] = event;
             } else {
-                println!("🚫 Discarding duplicate single event: Keeping existing '{}'",
+                // Discarding duplicate single event - keeping existing
-                    existing_event.summary.as_ref().unwrap_or(&"No Title".to_string())
-                );
             }
             continue;
         }
@@ -608,10 +600,6 @@ fn deduplicate_events(mut events: Vec<VEvent>) -> Vec<VEvent> {
         });
         
         if is_rrule_generated {
-            println!("🚫 Discarding RRULE-generated instance: '{}' at {} would be generated by recurring event",
-                event.summary.as_ref().unwrap_or(&"No Title".to_string()),
-                event.dtstart.format("%Y-%m-%d %H:%M")
-            );
         } else {
             // This is a unique single event
             seen_single.insert(dedup_key, deduplicated_single.len());
@@ -623,11 +611,6 @@ fn deduplicate_events(mut events: Vec<VEvent>) -> Vec<VEvent> {
     let mut result = deduplicated_recurring;
     result.extend(deduplicated_single);
     
-    println!("📊 Deduplication complete: {} -> {} events ({} recurring, {} single)", 
-        original_count, result.len(), 
-        result.iter().filter(|e| e.rrule.is_some()).count(),
-        result.iter().filter(|e| e.rrule.is_none()).count()
-    );
     
     result
 }
@@ -653,14 +636,6 @@ fn consolidate_same_title_events(events: Vec<VEvent>) -> Vec<VEvent> {
     }
     
     // Log the RRULEs we're working with
-    for event in &events {
-        if let Some(rrule) = &event.rrule {
-            println!("🔍 RRULE for '{}': {}", 
-                event.summary.as_ref().unwrap_or(&"No Title".to_string()),
-                rrule
-            );
-        }
-    }
     
     // Check if all events have similar time patterns and could be consolidated
     let first_event = &events[0];
@@ -683,7 +658,6 @@ fn consolidate_same_title_events(events: Vec<VEvent>) -> Vec<VEvent> {
     });
     
     if !can_consolidate {
-        println!("🚫 Cannot consolidate events - different times or durations");
         // Just deduplicate exact duplicates
         return deduplicate_exact_recurring_events(events);
     }
@@ -696,13 +670,11 @@ fn consolidate_same_title_events(events: Vec<VEvent>) -> Vec<VEvent> {
     if weekly_events.len() >= 2 && weekly_events.len() == events.len() {
         // All events are weekly - try to consolidate into a single multi-day weekly pattern
         if let Some(consolidated) = consolidate_weekly_patterns(&events) {
-            println!("✅ Successfully consolidated {} weekly patterns into one", events.len());
             return vec![consolidated];
         }
     }
     
     // If we can't consolidate, just deduplicate exact matches and keep the most complete one
-    println!("🚫 Cannot consolidate - keeping most complete event");
     let deduplicated = deduplicate_exact_recurring_events(events);
     
     // If we still have multiple events, keep only the most complete one