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/dto/chat/tool.rs

@@ -7,7 +7,6 @@
 //!
 //! Why: kept separate from `dto::provider` because tool calls are a property
 //! of a chat *message*, not of the request/response envelope.
-
 use serde::{Deserialize, Serialize};
 use serde_json::Value;
 
@@ -41,10 +40,7 @@ mod tests {
     #[test]
     fn repair_json_bracket_then_brace() {
         // `[` opened first → `]` must close first, then `}`
-        assert_eq!(
-            repair_json("[[1, 2, {\"a\": 3"),
-            "[[1, 2, {\"a\": 3}]]"
-        );
+        assert_eq!(repair_json("[[1, 2, {\"a\": 3"), "[[1, 2, {\"a\": 3}]]");
     }
 
     #[test]
@@ -212,7 +208,8 @@ pub fn sanitize_tool_arguments(args: &Value) -> Value {
             // Attempt 2: strip control chars (0x00-0x1F except \t, \n)
             // that some LLM providers emit as literal bytes in JSON strings
             // (e.g. multi-line commit messages), then retry.
-            let cleaned: String = s.chars()
+            let cleaned: String = s
+                .chars()
                 .filter(|&c| !c.is_control() || c == '\t' || c == '\n' || c == '\r')
                 .collect();
             if cleaned.len() != s.len() {
@@ -225,20 +222,23 @@ pub fn sanitize_tool_arguments(args: &Value) -> Value {
                 }
             }
             // Attempt 3: repair truncated JSON and retry.
-            let input = if cleaned.len() == s.len() { s } else { &cleaned };
+            let input = if cleaned.len() == s.len() {
+                s
+            } else {
+                &cleaned
+            };
             let repaired = repair_json(input);
             match serde_json::from_str::<Value>(&repaired) {
                 Ok(v) => {
-                    tracing::warn!(
-                        "tool argument string was truncated — repaired successfully",
-                    );
+                    tracing::warn!("tool argument string was truncated — repaired successfully",);
                     v
                 }
                 Err(e2) => {
                     tracing::error!(
                         "tool argument is a JSON string but failed to parse. \
                          Wrapping in object. Error: {}. Raw (first 200): {}",
-                        e2, s.chars().take(200).collect::<String>(),
+                        e2,
+                        s.chars().take(200).collect::<String>(),
                     );
                     serde_json::json!({"_raw": s, "_parse_error": e2.to_string()})
                 }