fix(agent): preserve spaces while stripping only newlines for alignment

Previous fix used lstrip() which removed ALL leading whitespace, including
spaces between words when streaming content chunk by chunk. This caused
words to run together, e.g., 'test' + ' here' became 'testhere'.

Now we only strip newline and carriage return characters (\n\r) while
preserving spaces and other whitespace that are part of the actual content.

This ensures:
- Content appears on same line as [📎] header
- Proper spacing between words is maintained
- Only problematic leading newlines are removed for alignment

Fixes the word spacing regression introduced in the alignment fix.

Author: cellwebb

src/clippy/agent/loop.py

@@ -317,16 +317,18 @@ def _process_streaming_response(
         # Handle streaming content deltas
         if chunk.get("delta") and chunk.get("content"):
             # Print the chunk directly for real-time display
-            # Strip leading whitespace for display to prevent content appearing on wrong line
-            display_content = chunk["content"].lstrip()
+            # Strip only leading newlines to prevent content appearing on wrong line
+            # but preserve other whitespace like spaces between words
+            display_content = chunk["content"].lstrip('\n\r')
             console.print(escape(display_content), end="")
             accumulated_content += chunk["content"]
         elif chunk.get("content") and not chunk.get("delta"):
             # Final full content (for non-streaming models like codex)
             # Only print if we haven't already been streaming content
             if not accumulated_content:
-                # Strip leading whitespace for display to prevent content appearing on wrong line
-                display_content = chunk["content"].lstrip()
+                # Strip only leading newlines to prevent content appearing on wrong line
+                # but preserve other whitespace like spaces between words
+                display_content = chunk["content"].lstrip('\n\r')
                 console.print(escape(display_content), end="")
             accumulated_content = chunk["content"]
         elif not chunk.get("delta"):