docs: update line width docs to reflect Col100 default

Made-with: Cursor

Author: OlaProeis

docs/ai-workflow/prds/prd-v0.2.3.md

@@ -116,10 +116,10 @@ After v0.2.2 addressed critical bugs and CLI improvements, users expect standard
 #### 2.1 Configurable Line Width (Issue #15)
 - **Feature:** Limit text width for improved readability
 - **Setting:** `max_line_width` in Settings > Editor
-- **Options:** 
-  - Off (default, current behavior)
+- **Options:**
+  - Off (no width limit)
   - 80 characters
-  - 100 characters
+  - 100 characters (default)
   - 120 characters
   - Custom pixel width
 - **Behavior:**

docs/technical/configurable-line-width.md

@@ -14,9 +14,9 @@ Added `MaxLineWidth` enum with the following variants:
 
 ```rust
 pub enum MaxLineWidth {
-    Off,           // No width limit (default)
+    Off,           // No width limit
     Col80,         // 80 characters
-    Col100,        // 100 characters  
+    Col100,        // 100 characters (default)
     Col120,        // 120 characters
     Custom(u32),   // Custom pixel width (400-2000px)
 }
@@ -28,7 +28,7 @@ Key methods:
 - `description() -> &'static str` - Returns descriptive text
 - `is_custom() -> bool` - Checks if this is a custom width
 
-Added `max_line_width` field to `Settings` struct with default value `MaxLineWidth::Off`.
+Added `max_line_width` field to `Settings` struct with default value `MaxLineWidth::Col100`.
 
 ### Settings UI (`src/ui/settings.rs`)