Stellar Index v0.5.0-rc.115

[v0.5.0-rc.115] — 2026-06-18

Added

• Contract code/upgrade history. New GET /v1/contracts/{id}/code-history
  returns a contract's WASM-hash timeline — each distinct executable its
  instance has pointed at, chronologically, so an in-place update_contract
  upgrade shows as a new version. Backs a Code history panel on the
  contract page (alongside events / decoded WASM / interaction map). Coverage =
  the captured entry-change window; fills with the Phase-C backfill.

Fixed

• Dashboard API keys: wrong prefix + a fresh key looked revoked / "last used
  ~2025 years ago" / first-request-already-done. The key DTO used omitempty
  on time.Time fields, which does NOT omit a zero time (it's a non-empty
  struct → "0001-01-01T00:00:00Z"), so the UI saw a revoked_at +
  last_used_at on every new key and rendered it revoked, ancient-last-used,
  and "traffic seen". Switched revoked_at/last_used_at/expires_at to
  pointer times omitted when zero. Also minted keys now use the sip_ prefix
  (Stellar Index) instead of the rebrand-leftover rek_ (existing rek_ keys
  keep authenticating — the prefix is display-only).