v0.32.0 — Interactive Gate Mode wired into run

Added

• Interactive Gate Mode — wired into run (#71, Phase 2 of #70). The tested
  gate core is now a usable flow:
  • run --interactive / --preset <autopilot|checkpoints|full_review> /
    --gates G1,G2,... arm a gate set (default checkpoints = G1/G2/G8),
    persisted to data/run_ledger.json.
  • A ledger-driven multi-stop pause: before a stage an armed-undecided gate
    guards, run emits a *.gate.json (decision context from the #62–#69
    disclosure) and stops; run --continue reads the decision, records it,
    and advances to the next gate. Fully-wired apply: G1 (reuse vs re-extract),
    G2 (top-N → enrich limit, drop-noise), G8 (terminal acceptance); G3–G7
    emit+record (MVP).
  • run --resume-from Gn → resume_plan → re-runs only the affected stage
    suffix (e.g. G5 → render → review), then prints an automatic review-diff.
  • Backward compatible: with no gate flags (or --preset autopilot), run
    and run --continue behave exactly as before — no ledger, no pauses. The G5
    fabrication guard (assert_g5_safe) stays active on the run path, with the
    gate context filtered to safe_to_surface metrics only.