v1.18.0

Added

• Logs finally visible in Claude's MCP tab: the server now declares the MCP logging
  capability, answers logging/setLevel and emits notifications/message frames on every
  lifecycle event — boot, delegate/fanOut start, session idle / needs-input / failure,
  shutdown, hygiene sweeps, tool errors (throttled, zero spam). Every line is mirrored to
  stderr ([opencode:<level>] …) for claude --mcp-debug. Root cause of the silence: the
  progress frames that existed before require a caller-supplied progressToken, which Claude
  Code does not send by default.
• Zero-litter guarantee — disk hygiene reaper: one TTL-based sweep (hygiene.mjs) now owns
  every file the plugin ever writes, running at MCP-server boot, hourly on long-lived servers,
  in the SessionEnd hook and on demand via shutdown { cleanState: true }. Five rules:
  stale per-workspace state dirs (>14d, no live tracked server), orphaned job files dropped by
  the MAX_JOBS prune, crash-leftover *.tmp.* files (base level + hash dirs + state files),
  consumed .oc-report.md reports (>7d, terminal jobs only, plugin-known workspaces only),
  abandoned oc-e2e-* / oc-demo-* / oc-bench-* dev workspaces in the OS temp dir. Safety
  rails: live pids freeze their dir, fresh files are never touched (spawn-race safe), / and
  the home directory are refused, everything is previewable with a dry run. Knobs:
  OPENCODE_STATE_TTL_DAYS / OPENCODE_REPORT_TTL_DAYS (0 disables).
• Doctor hygiene preview: new [PASS] hygiene check shows exactly what the next sweep
  would clean (dry run, removes nothing).
• .oc-report.md delivered inline: when a delegated session reaches idle without error,
  wait embeds the report content in the response (first call only, capped at 8k chars) —
  the supervisor reads it without an extra Read, which also makes the deferred report deletion
  safe.

Fixed

• Windows state location: the no-env fallback built /tmp/opencode-companion, which on
  Windows resolved to C:\tmp\...; win32 now falls back to os.tmpdir() while POSIX keeps the
  literal /tmp path so existing installations do not migrate state.
• Duplicate budget: key in the models tool result (last key silently won).