feat: set up modularized version of project with testing

src/timesheets/projects.py

@@ -0,0 +1,29 @@
+import json
+import sys
+
+
+def load_project_map(path: str | None) -> dict:
+    """Load a project map JSON file. Returns an empty dict if path is None or missing."""
+    if not path:
+        return {}
+    try:
+        with open(path, "r", encoding="utf-8") as f:
+            return json.load(f)
+    except FileNotFoundError:
+        print(f"Warning: project map file not found: {path}", file=sys.stderr)
+        return {}
+    except json.JSONDecodeError as e:
+        print(f"Warning: could not parse project map file: {e}", file=sys.stderr)
+        return {}
+
+
+def resolve_project_task(raw_project: str, project_map: dict) -> tuple[str, str]:
+    """
+    Look up a raw project key in the project map.
+    Returns (Project, Task) if found, or (raw_project, "") as fallback.
+    """
+    key = raw_project.strip().lower()
+    entry = project_map.get(key) or project_map.get(raw_project.strip())
+    if entry:
+        return entry.get("Project", raw_project), entry.get("Task", "")
+    return raw_project, ""