[PATCH 12/23] rteval MCP: Fix glob patterns to find rteval result files

Three MCP tools were using "*.xml" pattern which doesn't find rteval
result files in their subdirectories. Changed to "rteval-*/summary.xml"
to correctly locate rteval results.

Fixed tools:
- filter_results: Now finds rteval result files for kernel/date filtering
- find_best_worst: Now finds rteval result files for best/worst analysis
- compare_to_baseline: Now finds rteval result files for regression detection

The batch_analysis tool already had a configurable pattern parameter and
was working correctly.

This bug was discovered by the new integration test which validates that
all MCP tools work end-to-end through the MCP interface.

Assisted-by: Claude:claude-sonnet-4-5
Signed-off-by: John Kacur <[email protected]>
---
 mcp-server/server.py | 16 ++++++++--------
 1 file changed, 8 insertions(+), 8 deletions(-)

diff --git a/mcp-server/server.py b/mcp-server/server.py
index 48474df56fab..dc68b3a3ad47 100755
--- a/mcp-server/server.py
+++ b/mcp-server/server.py
@@ -1149,12 +1149,12 @@ async def call_tool(name: str, arguments: Any) -> list[TextContent]:
                     text=f"Error: Directory '{directory}' does not exist"
                 )]
 
-            # Find all XML files
-            files = list(path.glob("*.xml"))
+            # Find rteval result files
+            files = list(path.glob("rteval-*/summary.xml"))
             if not files:
                 return [TextContent(
                     type="text",
-                    text=f"No XML files found in '{directory}'"
+                    text=f"No rteval result files found in '{directory}'"
                 )]
 
             # Parse and filter
@@ -1262,12 +1262,12 @@ async def call_tool(name: str, arguments: Any) -> list[TextContent]:
                     text=f"Error: Directory '{directory}' does not exist"
                 )]
 
-            # Find all XML files
-            files = list(path.glob("*.xml"))
+            # Find rteval result files
+            files = list(path.glob("rteval-*/summary.xml"))
             if not files:
                 return [TextContent(
                     type="text",
-                    text=f"No XML files found in '{directory}'"
+                    text=f"No rteval result files found in '{directory}'"
                 )]
 
             # Parse and collect metrics
@@ -1380,11 +1380,11 @@ async def call_tool(name: str, arguments: Any) -> list[TextContent]:
                     text=f"Error: Directory '{directory}' does not exist"
                 )]
 
-            files = list(path.glob("*.xml"))
+            files = list(path.glob("rteval-*/summary.xml"))
             if not files:
                 return [TextContent(
                     type="text",
-                    text=f"No XML files found in '{directory}'"
+                    text=f"No rteval result files found in '{directory}'"
                 )]
 
             # Build comparison report
-- 
2.55.0