Rename to rpmroute

The router began as a port of FreeRouting and has grown its own engine
(negotiated congestion, tree nets, exact checks, axis escapes), and
'freeroute' was one letter from the project it no longer follows. The
package, module and command are now rpmroute; the freeroute command stays
as an alias, and the RPMROUTE / RPMROUTE_ORACLE_JAVA variables fall back
to the old FREEROUTE names. Version 2026.10.07. Routing is unchanged: a
PCBench board routes to a byte-identical session either way.

tests/geometry/test_box.py

@@ -6,7 +6,7 @@ containment and degenerate (empty / point / segment) tiles.
 
 from __future__ import annotations
 
-from freeroute.geometry import IntBox, IntPoint, IntVector, RationalPoint
+from rpmroute.geometry import IntBox, IntPoint, IntVector, RationalPoint
 
 
 def test_measures():

tests/geometry/test_direction.py

@@ -5,7 +5,7 @@ Oracles hand-derived from ``geometry/planar/{Direction,IntDirection}.java``.
 
 from __future__ import annotations
 
-from freeroute.geometry import Direction, IntDirection, IntPoint, IntVector, Side
+from rpmroute.geometry import Direction, IntDirection, IntPoint, IntVector, Side
 
 
 def test_normalized_direction_reduces_by_gcd():

tests/geometry/test_line.py

@@ -5,7 +5,7 @@ Oracles hand-derived from ``geometry/planar/Line.java``.
 
 from __future__ import annotations
 
-from freeroute.geometry import IntPoint, Line, RationalPoint, Side
+from rpmroute.geometry import IntPoint, Line, RationalPoint, Side
 
 
 def test_side_of_point():
@@ -79,7 +79,7 @@ def test_intersection_approx_matches_exact():
 def test_translate_and_opposite():
     line = Line.from_coords(0, 0, 4, 0)
     assert line.opposite().direction().equals(line.direction()) is False
-    from freeroute.geometry import IntVector
+    from rpmroute.geometry import IntVector
 
     moved = line.translate_by(IntVector(0, 5))
     assert moved.side_of(IntPoint(2, 5)) == Side.COLLINEAR

tests/geometry/test_octagon.py

@@ -7,7 +7,7 @@ import random
 
 import pytest
 
-from freeroute.geometry import IntBox, IntPoint, ceil_sqrt2, overlaps_2d, segment_octagon
+from rpmroute.geometry import IntBox, IntPoint, ceil_sqrt2, overlaps_2d, segment_octagon
 
 
 @pytest.mark.parametrize("r", [0, 1, 2, 3, 1000, 2000, 3000, 12345, 999999])

tests/geometry/test_point_vector.py

@@ -8,7 +8,7 @@ Java ``long``, and rational equality.
 
 from __future__ import annotations
 
-from freeroute.geometry import (
+from rpmroute.geometry import (
     IntPoint,
     IntVector,
     RationalPoint,
@@ -139,7 +139,7 @@ def test_rational_point_infinite():
 
 
 def test_rational_point_contained_in_box_exact():
-    from freeroute.geometry import IntBox
+    from rpmroute.geometry import IntBox
 
     box = IntBox(0, 0, 2, 2)
     assert RationalPoint(3, 2, 2).is_contained_in(box)  # (1.5, 1.0) inside

tests/geometry/test_polygon.py

@@ -13,9 +13,9 @@ from __future__ import annotations
 
 import pytest
 
-from freeroute.geometry import IntPoint, Side
-from freeroute.geometry.polygon import Polygon
-from freeroute.geometry.polygon_shape import PolygonShape
+from rpmroute.geometry import IntPoint, Side
+from rpmroute.geometry.polygon import Polygon
+from rpmroute.geometry.polygon_shape import PolygonShape
 
 
 def pts(*coords):

tests/geometry/test_polyline.py

@@ -2,7 +2,7 @@
 
 from __future__ import annotations
 
-from freeroute.geometry import (
+from rpmroute.geometry import (
     IntBox,
     IntPoint,
     Polyline,

tests/geometry/test_simplex.py

@@ -16,7 +16,7 @@ Source: ``geometry/planar/{TileShape,Simplex}.java``.
 
 from __future__ import annotations
 
-from freeroute.geometry import IntBox, IntPoint, Line, Side, Simplex
+from rpmroute.geometry import IntBox, IntPoint, Line, Side, Simplex
 
 
 def _grid(lo: int, hi: int):
@@ -162,7 +162,7 @@ def test_get_instance_detects_empty_from_opposing_halfplanes():
 
 def test_translate_preserves_shape():
     tri = right_triangle()
-    from freeroute.geometry import IntVector
+    from rpmroute.geometry import IntVector
 
     moved = tri.translate_by(IntVector(100, 50))
     for p in _grid(-3, 13):