model

chore: bump 0.18.6 — machineProfile telemetry + MCP output compaction

- engagement.machineProfile (8bc90ec): bucketed/enum machine fingerprint to
  triage the graph_load crash cohort (data_dir_kind, antivirus_kind,
  machine_kind, ram), no PII.
- compact MCP tool-result serialization (6bb77e6): ~24% lossless on every
  tool; CODEGRAPH_MCP_PRETTY=1 restores indentation.
- find_entry_points honors limit (default 50) + compact (236e32c): kills the
  >50k-char tail (was 24/42 calls).

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>