chore: release 1.0.0

Bump version to 1.0.0 and pin the donglora dep to >=1.0.0,<2.0.0 (PyPI), matching the freshly-published donglora 1.0.0 client.


Also knock out two preexisting lint failures surfaced by the release-time `just check` gauntlet:

* orac/crypto.py: drop the redundant int() wrap around round() (RUF046).

* orac/state.py: widen _state value type to include list[list[float]] so heard_positions type-checks under pyright.

orac/state.py

@@ -17,7 +17,7 @@ log = logging.getLogger("orac")
 
 # ── Persistent state ─────────────────────────────────────────────
 
-_state: dict[str, dict[str, object]] = {
+_state: dict[str, dict[str, object] | list[list[float]]] = {
     "channel_history": {},  # channel_name -> list of messages
     "dm_history": {},  # peer_pubkey_hex -> list of messages
     "known_nodes": {},  # pubkey_hex -> {"name": str, "seen": float}