fix: join wrapped changelog lines in release notes

.mise/scripts/check-release

@@ -44,5 +44,18 @@ section=$(awk -v h="## [$version]" '
 [[ -n "${section//[[:space:]]/}" ]] || fail "CHANGELOG.md has no filled '## [$version]' section"
 
 ((failures == 0)) || exit 1
-$notes && printf '%s\n' "$section"
+
+# The changelog is wrapped for the repository; a release page is not, so a
+# bullet's continuation lines are joined onto it. Relative links would lead
+# nowhere from the release page, so they point at the tag when the repository
+# is known, as it is on a runner.
+if $notes; then
+  base=""
+  [[ -z "${GITHUB_REPOSITORY:-}" ]] || base="${GITHUB_SERVER_URL:-https://github.com}/$GITHUB_REPOSITORY/blob/$tag/"
+  printf '%s\n' "$section" | awk '
+    /^  / { sub(/^ +/, ""); line = line " " $0; next }
+    { if (NR > 1) print line; line = $0 }
+    END { print line }
+  ' | sed -E "s|\]\(|](${base}|g; s|\]\(${base}(https?://)|](\1|g"
+fi
 exit 0

tests/unit/test_check_release.py

@@ -27,13 +27,13 @@ def make_repo(root: Path, *, skill: str = "0.1.0", pyproject: str = "0.1.0") ->
     )
 
 
-def run(root: Path, *args: str) -> subprocess.CompletedProcess[str]:
+def run(root: Path, *args: str, **env: str) -> subprocess.CompletedProcess[str]:
     return subprocess.run(  # noqa: S603
         ["bash", str(SCRIPT), *args],  # noqa: S607
         capture_output=True,
         text=True,
         check=False,
-        env={"CHECK_RELEASE_ROOT": str(root), "PATH": "/usr/bin:/bin"},
+        env={"CHECK_RELEASE_ROOT": str(root), "PATH": "/usr/bin:/bin", **env},
     )
 
 
@@ -60,6 +60,28 @@ def test_notes_are_the_matching_section_only(tmp_path: Path) -> None:
     assert result.stdout.strip() == "- First release.\n- Second line."
 
 
+def test_notes_join_wrapped_lines_and_point_links_at_the_tag(tmp_path: Path) -> None:
+    # Given a changelog whose bullet wraps and links to a file in the repository
+    make_repo(tmp_path)
+    (tmp_path / "CHANGELOG.md").write_text(
+        "# Changelog\n\n## [0.1.0] - 2026-10-02\n\n"
+        "- First release, wrapped\n  onto a second line ([ADR](docs/a.md), [site](https://x.test/y)).\n"
+        "- Second.\n"
+    )
+
+    # When the notes are asked for on a runner, which names its repository
+    result = run(tmp_path, "v0.1.0", "--notes", GITHUB_REPOSITORY="org/repo")
+
+    # Then each bullet is one line, and only the relative link is rewritten
+    assert result.stdout.strip().splitlines() == [
+        (
+            "- First release, wrapped onto a second line "
+            "([ADR](https://github.com/org/repo/blob/v0.1.0/docs/a.md), [site](https://x.test/y))."
+        ),
+        "- Second.",
+    ]
+
+
 @pytest.mark.parametrize("tag", ["0.1.0", "v1", "v0.1", "v0.1.0-rc1", ""])
 def test_malformed_tag_is_a_usage_error(tmp_path: Path, tag: str) -> None:
     # Given a consistent repository