Loki Mode

Added

• Auto-open dashboard on loki start. For interactive foreground sessions Loki
  now opens the dashboard in the default browser automatically after the run
  starts. The behavior is cross-platform (macOS open, Linux
  xdg-open/wslview, Windows start) and is automatically skipped when
  running in CI (CI=true), with --detach / --background, over SSH without
  a TTY, or with piped stdin. Set LOKI_NO_AUTO_OPEN=1 to opt out entirely.
• Live-app banner in the run completion summary. .loki/COMPLETION.txt now
  includes a "Your app is live at " line (the locally-running app URL) plus
  the dashboard URL when the built app is still running at the time the run
  closes. Users see exactly where to try what Loki just built without hunting
  through logs.
• Native Claude Code resilience flags on every autonomous iteration. The RARV
  loop now passes --effort (adaptive reasoning matched to the current RARV
  phase: low for Haiku-tier utility steps, medium for standard iterations,
  high for planning and critical-path phases), --max-budget-usd (a per-call
  cost backstop to prevent runaway spending on a single iteration), and
  --fallback-model (automatic model failover when the primary model is
  overloaded or unavailable) on each provider invocation. Each flag is gated on
  CLI support detection and an individual opt-out env var
  (LOKI_AUTO_EFFORT=off, LOKI_AUTO_BUDGET=off, LOKI_AUTO_FALLBACK=off).
  Loki's deterministic trust and verification gates (RARV-C closure, 11 quality
  gates, completion council, verified-completion evidence gate) are unchanged.

Notes

• The auto-open behavior adds no network calls and no vendor dependency. It is
  a local open/xdg-open/start invocation only.
• The --effort mapping follows the existing RARV tier definitions: tier 1
  (Opus/planning) maps to high, tier 2 (Sonnet/development) maps to medium,
  tier 3 (Haiku/parallelization) maps to low. Tiers are unchanged.