feat(mcp): add title and tags annotations to all MCP tool decorators (issue #826 phase 1)

Adds human-readable `title` and categorization `tags` to all ~24 @mcp.tool
decorators across the MCP tools package. FastMCP 3.3.1 (pinned in pyproject.toml)
supports both fields natively. Tags used: notes, search, projects, cloud, schema,
navigation, canvas, ui.

Extends test_tool_contracts.py with an async test that asserts every registered
tool has a non-empty title and at least one tag to prevent future regressions.

output_schema is explicitly deferred as a follow-up (phase 2): it requires
per-tool design decisions about which tools reliably return structured JSON and
how to handle tools that return str|dict depending on output_format.

Co-Authored-By: Claude <noreply@anthropic.com>
Signed-off-by: Drew Cain <groksrc@gmail.com>

src/basic_memory/mcp/tools/view_note.py

@@ -11,7 +11,9 @@ from basic_memory.mcp.tools.read_note import read_note
 
 
 @mcp.tool(
+    title="View Note",
     description="View a note as a formatted artifact for better readability.",
+    tags={"notes"},
     annotations={"readOnlyHint": True, "openWorldHint": False},
 )
 async def view_note(