feat(combat): add concealment miss chance, sneak attack, and Precise Shot

src/pf1e_simulator/rng.py

@@ -32,6 +32,10 @@ class Rng(Protocol):
         """Return roll_die(20)."""
         ...
 
+    def d100(self) -> int:
+        """Return roll_die(100)."""
+        ...
+
     def choice_index(self, n: int) -> int:
         """Return a uniform integer in 0..n-1 for deterministic tie-breaks."""
         ...
@@ -49,6 +53,9 @@ class SeededRng:
     def d20(self) -> int:
         return self.roll_die(20)
 
+    def d100(self) -> int:
+        return self.roll_die(100)
+
     def choice_index(self, n: int) -> int:
         return self._rng.randrange(n)
 
@@ -56,7 +63,7 @@ class SeededRng:
 class ScriptedRng:
     """Rng that pops predetermined values from a queue.
 
-    Each call to roll_die, d20, or choice_index consumes one value.
+    Each call to roll_die, d20, d100, or choice_index consumes one value.
     Raises RngExhaustedError when the queue is empty.
     """
 
@@ -71,6 +78,9 @@ class ScriptedRng:
     def d20(self) -> int:
         return self.roll_die(20)
 
+    def d100(self) -> int:
+        return self.roll_die(100)
+
     def choice_index(self, _n: int) -> int:
         if not self._queue:
             raise RngExhaustedError(_EXHAUSTED_MSG)