lib.version.Dependency.__version_boundaries(): Use Version.next()

Use Version.next() in __version_boundaries, which steps the last existing
part, so '= 1.0' spans '>= 1.0, < 1.1'.

Tests written by AI.

Assisted-by: unsloth/Qwen3.8-27B-GGUF:Q4_K_M with pi.dev v0.85.1
Signed-off-by: Jan Lindemann <jan@janware.com>

src/python/jw/pkg/lib/version/Dependency.py

@@ -74,13 +74,14 @@ class Dependency:  # export
             return (specified, )
         ret: list[Boundary] = []
         match specified.op:
-            case '>' | '>=':
-                ret.append(specified)
-                ret.append(Boundary('<', specified.version.next_binary_incompatible))
             case '=':
+                try:
+                    next_version = specified.version.next
+                except Version.Error:
+                    return (specified, )
                 ret.append(Boundary('>=', specified.version))
-                ret.append(Boundary('<', specified.version.next_binary_incompatible))
-            case '<' | '<=':
+                ret.append(Boundary('<', next_version))
+            case '>' | '>=' | '<' | '<=':
                 ret.append(specified)
             case _:
                 self.__raise(
@@ -150,8 +151,9 @@ class Dependency:  # export
         NAMES_ONLY renders the name alone. With untemplated = False the
         VERSION, VERSION-REVISION and REVISION macros are kept as
         written instead of resolved. include_revision = False drops the
-        revision of VERSION specs. as_range expands a boundary that
-        pins a full version into the range it spans. no_subpackages
+        revision of VERSION specs. as_range expands a = boundary that
+        does not pin a full version into the range it spans; other
+        operators pass through unchanged. no_subpackages
         renders the base name, quote wraps the result in the given
         string.
         """