Refactor view modules for improved readability and consistency

- Updated markdown rendering logic to use more concise methods for obtaining vector lengths.
- Changed review status display to use the correct flag from settings.
- Cleaned up sidebar rendering code for better formatting and readability.
- Enhanced status bar rendering with improved string formatting and consistent style application.
- Refined workflow panel rendering, ensuring consistent style usage and improved readability.
- Added architecture overview and detailed documentation for backend, data, dependencies, and frontend structures.

src/model/editlog.rs

@@ -1,6 +1,5 @@
 //! Append-only JSONL edit log recording every file mutation made by tools,
 //! for audit and undo/history purposes.
-
 use serde::{Deserialize, Serialize};
 
 /// A single recorded file edit: which tool made it, to which path, why,
@@ -44,7 +43,9 @@ impl EditLog {
     /// regardless of the in-memory limit.
     fn load_from_disk(path: &std::path::Path) -> Vec<EditLogEntry> {
         use std::io::{BufRead, BufReader};
-        let Ok(file) = std::fs::File::open(path) else { return Vec::new() };
+        let Ok(file) = std::fs::File::open(path) else {
+            return Vec::new();
+        };
         let reader = BufReader::new(file);
         let mut entries: Vec<EditLogEntry> = Vec::new();
         for line in reader.lines() {
@@ -151,7 +152,8 @@ mod tests {
                 bytes_delta: 10 + i,
                 origin: "main".to_string(),
                 session_id: "sess-1".to_string(),
-            }).unwrap();
+            })
+            .unwrap();
         }
         assert_eq!(log.len(), 5);
         assert_eq!(log.entries[0].reason, "reason 0");