refactor: rename debug_issue tool to debug for brevity

- Rename debug_issue.py to debug.py
- Update tool name from 'debug_issue' to 'debug' throughout codebase
- Update all references in server.py, tests, and README
- Keep DebugIssueTool class name for backward compatibility
- All tests pass with the renamed tool

This makes the tool name shorter and more consistent with other
tool names like 'chat' and 'analyze'. The functionality remains
exactly the same.

🤖 Generated with Claude Code

Co-Authored-By: Claude <noreply@anthropic.com>

tests/test_collaboration.py

@@ -8,7 +8,7 @@ from unittest.mock import Mock, patch
 import pytest
 
 from tools.analyze import AnalyzeTool
-from tools.debug_issue import DebugIssueTool
+from tools.debug import DebugIssueTool
 from tools.models import ClarificationRequest, ToolOutput
 
 
@@ -122,7 +122,7 @@ class TestDynamicContextRequests:
                 "question": "I need to see the database configuration to diagnose the connection error",
                 "files_needed": ["config/database.yml", "src/db.py"],
                 "suggested_next_action": {
-                    "tool": "debug_issue",
+                    "tool": "debug",
                     "args": {
                         "error_description": "Connection timeout to database",
                         "files": [
@@ -155,7 +155,7 @@ class TestDynamicContextRequests:
 
         clarification = json.loads(response_data["content"])
         assert "suggested_next_action" in clarification
-        assert clarification["suggested_next_action"]["tool"] == "debug_issue"
+        assert clarification["suggested_next_action"]["tool"] == "debug"
 
     def test_tool_output_model_serialization(self):
         """Test ToolOutput model serialization"""

tests/test_large_prompt_handling.py

@@ -18,7 +18,7 @@ from mcp.types import TextContent
 from config import MCP_PROMPT_SIZE_LIMIT
 from tools.analyze import AnalyzeTool
 from tools.chat import ChatTool
-from tools.debug_issue import DebugIssueTool
+from tools.debug import DebugIssueTool
 from tools.review_changes import ReviewChanges
 from tools.review_code import ReviewCodeTool
 from tools.think_deeper import ThinkDeeperTool
@@ -167,8 +167,8 @@ class TestLargePromptHandling:
         assert output["status"] == "requires_file_prompt"
 
     @pytest.mark.asyncio
-    async def test_debug_issue_large_error_description(self, large_prompt):
-        """Test that debug_issue tool detects large error_description."""
+    async def test_debug_large_error_description(self, large_prompt):
+        """Test that debug tool detects large error_description."""
         tool = DebugIssueTool()
         result = await tool.execute({"error_description": large_prompt})
 
@@ -177,8 +177,8 @@ class TestLargePromptHandling:
         assert output["status"] == "requires_file_prompt"
 
     @pytest.mark.asyncio
-    async def test_debug_issue_large_error_context(self, large_prompt, normal_prompt):
-        """Test that debug_issue tool detects large error_context."""
+    async def test_debug_large_error_context(self, large_prompt, normal_prompt):
+        """Test that debug tool detects large error_context."""
         tool = DebugIssueTool()
         result = await tool.execute({"error_description": normal_prompt, "error_context": large_prompt})
 

tests/test_prompt_regression.py

@@ -12,7 +12,7 @@ import pytest
 
 from tools.analyze import AnalyzeTool
 from tools.chat import ChatTool
-from tools.debug_issue import DebugIssueTool
+from tools.debug import DebugIssueTool
 from tools.review_changes import ReviewChanges
 from tools.review_code import ReviewCodeTool
 from tools.think_deeper import ThinkDeeperTool
@@ -167,8 +167,8 @@ class TestPromptRegression:
                     assert output["status"] == "success"
 
     @pytest.mark.asyncio
-    async def test_debug_issue_normal_error(self, mock_model_response):
-        """Test debug_issue tool with normal error description."""
+    async def test_debug_normal_error(self, mock_model_response):
+        """Test debug tool with normal error description."""
         tool = DebugIssueTool()
 
         with patch.object(tool, "create_model") as mock_create_model:

tests/test_server.py

@@ -21,7 +21,7 @@ class TestServerTools:
         # Check all core tools are present
         assert "think_deeper" in tool_names
         assert "review_code" in tool_names
-        assert "debug_issue" in tool_names
+        assert "debug" in tool_names
         assert "analyze" in tool_names
         assert "chat" in tool_names
         assert "review_changes" in tool_names

tests/test_thinking_modes.py

@@ -7,7 +7,7 @@ from unittest.mock import Mock, patch
 import pytest
 
 from tools.analyze import AnalyzeTool
-from tools.debug_issue import DebugIssueTool
+from tools.debug import DebugIssueTool
 from tools.review_code import ReviewCodeTool
 from tools.think_deeper import ThinkDeeperTool
 

tests/test_tools.py

@@ -103,7 +103,7 @@ class TestReviewCodeTool:
 
 
 class TestDebugIssueTool:
-    """Test the debug_issue tool"""
+    """Test the debug tool"""
 
     @pytest.fixture
     def tool(self):
@@ -111,7 +111,7 @@ class TestDebugIssueTool:
 
     def test_tool_metadata(self, tool):
         """Test tool metadata"""
-        assert tool.get_name() == "debug_issue"
+        assert tool.get_name() == "debug"
         assert "DEBUG & ROOT CAUSE ANALYSIS" in tool.get_description()
         assert tool.get_default_temperature() == 0.2
 
@@ -232,8 +232,8 @@ class TestAbsolutePathValidation:
         assert "../parent/file.py" in response["content"]
 
     @pytest.mark.asyncio
-    async def test_debug_issue_tool_relative_path_rejected(self):
-        """Test that debug_issue tool rejects relative paths"""
+    async def test_debug_tool_relative_path_rejected(self):
+        """Test that debug tool rejects relative paths"""
         tool = DebugIssueTool()
         result = await tool.execute(
             {