feat: Add --list-events debugging improvements and timezone support

- Remove debug event limit to display all events
- Add timezone information to event listing output
- Update DEVELOPMENT.md with latest changes and debugging cycle documentation
- Enhance event parsing with timezone support
- Simplify CalDAV client structure and error handling

Changes improve debugging capabilities for CalDAV event retrieval and provide
better timezone visibility when listing calendar events.

config/config.toml

@@ -0,0 +1,51 @@
+# CalDAV Configuration for Zoho Sync
+# This matches the Rust application's expected configuration structure
+
+[server]
+# CalDAV server URL (Zoho)
+url = "https://calendar.zoho.com/caldav/d82063f6ef084c8887a8694e661689fc/events/"
+# Username for authentication
+username = "alvaro.soliverez@collabora.com"
+# Password for authentication (use app-specific password)
+password = "1vSf8KZzYtkP"
+# Whether to use HTTPS (recommended)
+use_https = true
+# Request timeout in seconds
+timeout = 30
+
+[calendar]
+# Calendar name/path on the server
+name = "caldav/d82063f6ef084c8887a8694e661689fc/events/"
+# Calendar display name (optional)
+display_name = "Alvaro.soliverez@collabora.com"
+# Calendar color in hex format (optional)
+color = "#4285F4"
+# Default timezone for the calendar
+timezone = "UTC"
+# Whether this calendar is enabled for synchronization
+enabled = true
+
+[sync]
+# Synchronization interval in seconds (300 = 5 minutes)
+interval = 300
+# Whether to perform synchronization on startup
+sync_on_startup = true
+# Maximum number of retry attempts for failed operations
+max_retries = 3
+# Delay between retry attempts in seconds
+retry_delay = 5
+# Whether to delete local events that are missing on server
+delete_missing = false
+# Date range configuration
+date_range = { days_ahead = 30, days_back = 30, sync_all_events = false }
+
+# Optional filtering configuration
+[filters]
+# Keywords to filter events by (events containing any of these will be included)
+# keywords = ["work", "meeting", "project"]
+# Keywords to exclude (events containing any of these will be excluded)
+# exclude_keywords = ["personal", "holiday", "cancelled"]
+# Minimum event duration in minutes
+min_duration_minutes = 5
+# Maximum event duration in hours
+max_duration_hours = 24