Ulysses truncates MCP tool descriptions to 120 chars in prompt text.
Moved '(not memory)' to first line of all four tool docstrings so the
disambiguation survives truncation. Kept Args/Returns sections intact.
Qwen3.5-9B was conflating these tools with manage_memory because the
descriptions sounded similar ('list vault contents' vs 'search memory').
Every tool now opens with 'FILESYSTEM TOOL' to create a hard routing
boundary from conversation/memory tools. Added explicit NOT clauses
('NOT a memory search, NOT a conversation search') and USE THIS TO
guidance so the model routes correctly on first attempt.
