refactor, add modularity

app/entities/comments.py

@@ -0,0 +1,37 @@
+import json
+from ..mcp import mcp
+from ..client import _get, _put
+
+
+@mcp.tool()
+def get_issue_comments(issue_id: int) -> str:
+    """
+    Get all comments (journal notes) for a Redmine issue.
+    Returns list of comments with author, date, and text.
+    """
+    data = _get(f"/issues/{issue_id}.json", params={"include": "journals"})
+    journals = data["issue"].get("journals", [])
+    comments = [
+        {
+            "id": j["id"],
+            "author": j["user"]["name"],
+            "created_on": j["created_on"],
+            "notes": j.get("notes", ""),
+            "details": j.get("details", []),
+        }
+        for j in journals
+    ]
+    return json.dumps(comments, ensure_ascii=False, indent=2)
+
+
+@mcp.tool()
+def add_issue_comment(issue_id: int, comment: str) -> str:
+    """
+    Add a comment (journal note) to a Redmine issue.
+
+    Args:
+        issue_id: Redmine issue ID
+        comment:  Text of the comment to add
+    """
+    _put(f"/issues/{issue_id}.json", {"issue": {"notes": comment}})
+    return f"Comment added to issue #{issue_id}."