Loki Mode v7.39.1

Fixed

• Fable model (claude-fable-5) is not available at the Claude API ("Claude
  Fable 5 is not available, use Opus 4.8"). A session pin, mid-flight override,
  or architect opt-in to fable now resolves to opus consistently across all
  three readers: the dispatched model (providers/claude.sh resolve_model_for_tier,
  autonomy/run.sh static fallback and the final pre-argv backstop,
  loki-ts claudeTierToModel and rarv.ts getProviderTierParam), the loki plan
  cost quote, and the dashboard effective-model. A fable pin now both runs AND
  quotes opus ($5/$25), not fable ($10/$50), so the quote matches the dispatch
  (cost honesty). The fable tier label, session-pin parsing (fable stays a valid
  input alias), and pricing-table rows are preserved; only the resolved model
  changes. The 224-cell session-pin parity matrix stays green (dispatch == quote
  == dashboard for every fable cell).