fix: update MCP tool/prompt/resource calls to use .fn attribute

FastMCP library changes now require calling decorated functions via the .fn attribute:
- Tools: @mcp.tool() functions return FunctionTool, call with tool.fn()
- Prompts: @mcp.prompt() functions return FunctionPrompt, call with prompt.fn()
- Resources: @mcp.resource() functions return FunctionResource, call with resource.fn()

Updated core files:
- view_note.py: read_note() → read_note.fn()
- read_note.py: search_notes() → search_notes.fn() (2 locations)
- tool.py: 6 MCP tool calls updated to use .fn
- recent_activity.py: recent_activity() → recent_activity.fn()
- project.py: project_info() → project_info.fn() with type ignore

Updated 100+ test files systematically to use .fn attribute and fixed mock targets.

All 869 tests now pass. Fixes view_note tool error in Claude Desktop.

🤖 Generated with [Claude Code](https://claude.ai/code)

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

src/basic_memory/cli/commands/project.py

@@ -174,7 +174,7 @@ def display_project_info(
     """Display detailed information and statistics about the current project."""
     try:
         # Get project info
-        info = asyncio.run(project_info())
+        info = asyncio.run(project_info.fn())  # type: ignore  # pyright: ignore [reportAttributeAccessIssue]
 
         if json_output:
             # Convert to JSON and print

src/basic_memory/cli/commands/tool.py

@@ -90,7 +90,7 @@ def write_note(
             typer.echo("Empty content provided. Please provide non-empty content.", err=True)
             raise typer.Exit(1)
 
-        note = asyncio.run(mcp_write_note(title, content, folder, tags))
+        note = asyncio.run(mcp_write_note.fn(title, content, folder, tags))
         rprint(note)
     except Exception as e:  # pragma: no cover
         if not isinstance(e, typer.Exit):
@@ -103,7 +103,7 @@ def write_note(
 def read_note(identifier: str, page: int = 1, page_size: int = 10):
     """Read a markdown note from the knowledge base."""
     try:
-        note = asyncio.run(mcp_read_note(identifier, page, page_size))
+        note = asyncio.run(mcp_read_note.fn(identifier, page, page_size))
         rprint(note)
     except Exception as e:  # pragma: no cover
         if not isinstance(e, typer.Exit):
@@ -124,7 +124,7 @@ def build_context(
     """Get context needed to continue a discussion."""
     try:
         context = asyncio.run(
-            mcp_build_context(
+            mcp_build_context.fn(
                 url=url,
                 depth=depth,
                 timeframe=timeframe,
@@ -157,7 +157,7 @@ def recent_activity(
     """Get recent activity across the knowledge base."""
     try:
         context = asyncio.run(
-            mcp_recent_activity(
+            mcp_recent_activity.fn(
                 type=type,  # pyright: ignore [reportArgumentType]
                 depth=depth,
                 timeframe=timeframe,
@@ -210,7 +210,7 @@ def search_notes(
         search_type = "text" if search_type is None else search_type
 
         results = asyncio.run(
-            mcp_search(
+            mcp_search.fn(
                 query,
                 search_type=search_type,
                 page=page,
@@ -241,7 +241,7 @@ def continue_conversation(
     """Prompt to continue a previous conversation or work session."""
     try:
         # Prompt functions return formatted strings directly
-        session = asyncio.run(mcp_continue_conversation(topic=topic, timeframe=timeframe))
+        session = asyncio.run(mcp_continue_conversation.fn(topic=topic, timeframe=timeframe))
         rprint(session)
     except Exception as e:  # pragma: no cover
         if not isinstance(e, typer.Exit):