fix: include finish milestones (TT_FinMile) in milestone queries

The list_milestones tool was only returning start milestones (TT_Mile)
and missing all finish milestones. P6 uses two task types for milestones:
- TT_Mile = Start Milestone
- TT_FinMile = Finish Milestone

Changes:
- Update query_milestones() to include both TT_Mile and TT_FinMile
- Derive milestone_type from task_type when not explicitly set:
  - TT_Mile -> 'start'
  - TT_FinMile -> 'finish'
- Add unit tests for milestone_type derivation from task_type

This fixes the E-J Electric schedule returning 5 milestones instead of 62.

src/xer_mcp/db/queries.py

@@ -396,9 +396,9 @@ def get_project_summary(project_id: str) -> dict | None:
         cur.execute("SELECT COUNT(*) FROM activities")
         activity_count = cur.fetchone()[0]
 
-    # Get milestone count
+    # Get milestone count (both start and finish milestones)
     with db.cursor() as cur:
-        cur.execute("SELECT COUNT(*) FROM activities WHERE task_type = 'TT_Mile'")
+        cur.execute("SELECT COUNT(*) FROM activities WHERE task_type IN ('TT_Mile', 'TT_FinMile')")
         milestone_count = cur.fetchone()[0]
 
     # Get critical activity count
@@ -419,16 +419,16 @@ def get_project_summary(project_id: str) -> dict | None:
 
 
 def query_milestones() -> list[dict]:
-    """Query all milestone activities.
+    """Query all milestone activities (both start and finish milestones).
 
     Returns:
-        List of milestone activity dicts
+        List of milestone activity dicts with milestone_type (start/finish)
     """
     query = """
         SELECT task_id, task_code, task_name,
-               target_start_date, target_end_date, status_code
+               target_start_date, target_end_date, status_code, milestone_type
         FROM activities
-        WHERE task_type = 'TT_Mile'
+        WHERE task_type IN ('TT_Mile', 'TT_FinMile')
         ORDER BY target_start_date, task_code
     """
 
@@ -444,6 +444,7 @@ def query_milestones() -> list[dict]:
             "target_start_date": row[3],
             "target_end_date": row[4],
             "status_code": row[5],
+            "milestone_type": row[6],
         }
         for row in rows
     ]

src/xer_mcp/parser/table_handlers/task.py

@@ -26,6 +26,22 @@ class TaskHandler(TableHandler):
         float_str = data.get("total_float_hr_cnt", "")
         total_float = float(float_str) if float_str else None
 
+        # Parse milestone_type
+        # First check explicit milestone_type field (MS_Start -> 'start', MS_Finish -> 'finish')
+        # Then derive from task_type (TT_Mile -> 'start', TT_FinMile -> 'finish')
+        raw_milestone_type = data.get("milestone_type", "")
+        task_type = data.get("task_type", "")
+        milestone_type = None
+        if raw_milestone_type:
+            if raw_milestone_type == "MS_Start":
+                milestone_type = "start"
+            elif raw_milestone_type == "MS_Finish":
+                milestone_type = "finish"
+        elif task_type == "TT_Mile":
+            milestone_type = "start"
+        elif task_type == "TT_FinMile":
+            milestone_type = "finish"
+
         return {
             "task_id": data.get("task_id", ""),
             "proj_id": data.get("proj_id", ""),
@@ -42,4 +58,5 @@ class TaskHandler(TableHandler):
             "act_end_date": convert_date(data.get("act_end_date")),
             "total_float_hr_cnt": total_float,
             "driving_path_flag": driving_path,
+            "milestone_type": milestone_type,
         }