fix(mcp): include project fallback for workspace short links

Signed-off-by: phernandez <paul@basicmachines.co>

Author: phernandez

src/basic_memory/utils.py

@@ -372,6 +372,18 @@ def add_candidate(value: str | None) -> None:
             add_candidate(f"{normalized_project}/{remainder}")
             add_candidate(remainder)
 
+    if workspace_project_prefix and not include_project and not workspace_qualified:
+        # Trigger: short lookup in a workspace where new canonical links omit project prefixes.
+        # Why: older rows in that same workspace may still be stored as `project/path`.
+        # Outcome: try the project-prefixed legacy form after the workspace-qualified form.
+        add_candidate(
+            build_canonical_permalink(
+                normalized_project,
+                normalized_path,
+                include_project=True,
+            )
+        )
+
     if include_project and not workspace_qualified:
         add_candidate(
             build_canonical_permalink(

tests/test_permalink_utils.py

@@ -47,6 +47,21 @@ def test_short_permalink_candidates_include_workspace_and_project_forms():
     ]
 
 
+def test_short_workspace_candidate_keeps_project_legacy_when_project_prefix_disabled():
+    candidates = build_permalink_resolution_candidates(
+        "notes/example",
+        "main",
+        include_project=False,
+        workspace_permalink="personal",
+    )
+
+    assert candidates == [
+        "notes/example",
+        "personal/main/notes/example",
+        "main/notes/example",
+    ]
+
+
 def test_qualified_permalink_reference_preserves_lookup_syntax():
     assert (
         build_qualified_permalink_reference(