Fix mail counts and finance ranges found testing live

- mail printed threads and the model called them emails; it now
  reports messages and threads.
- finance spending takes a since date (default the first of the month)
  instead of a day count, and an optional asset account. The
  per-account listing needs an end date or the API rejects it; an
  unknown account name gets the user's accounts back.
- Tool errors are capped at 2000 characters like normal output.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

1 files changed, 1 insertions, 1 deletions

diff --git a/assistant.py b/assistant.py
index 84f0dd8..635fb81 100644
--- a/assistant.py
+++ b/assistant.py
@@ -206,7 +206,7 @@ def run_tool(tools, name, arguments, d=TOOLS_DIR):
         return "error: timed out"
     if p.returncode:
         last = err.strip().splitlines()[-1:]
-        return "error: " + (last[0] if last else f"exit status {p.returncode}")
+        return ("error: " + (last[0] if last else f"exit status {p.returncode}"))[:2000]
     return out.strip()[:2000]