feat(release): resolve package name from packaging files, not folder

Previously the release workflow derived the distro-package name from
`os.path.basename(repo_root)`. Renaming the repo folder (e.g.
`infinito-nexus` → `infinito-nexus-core`) silently rewrote
`debian/changelog`'s top entry to the new folder name while
`debian/control` still pinned the legacy `Package:` value. dpkg-source
refuses to build a source package when the two disagree.

Add `resolve_package_name(paths)` that consults the existing packaging
files in priority order (debian/control `Package:` → PKGBUILD
`pkgname=` → RPM `.spec` `Name:`) and only falls back to the folder
basename when no packaging metadata is present. Extend `RepoPaths`
with a `debian_control` slot so `resolve_repo_paths` can discover the
file under both `packaging/debian/control` and the legacy `debian/`
location.

Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>

src/pkgmgr/actions/release/package_name.py

@@ -0,0 +1,75 @@
+"""Resolve the distro-package name for a release.
+
+The release flow writes the package identifier into `debian/changelog`,
+the RPM `%changelog` stanza, etc. Historically pkgmgr derived this
+identifier from the repository folder name (`os.path.basename(repo_root)`),
+which silently breaks when the repo is renamed but the existing packaging
+files still ship the legacy name. Renaming the folder must not change the
+distro-package identity — `apt`, `pacman`, `dnf`, and every downstream
+manifest pin the old name.
+
+The resolver therefore walks the existing packaging files in priority
+order and only falls back to the folder name when none of them ship an
+explicit name.
+
+Priority:
+  1. `debian/control` `Package:` field (most authoritative — dpkg-source
+     refuses to build if changelog and control disagree)
+  2. `packaging/arch/PKGBUILD` `pkgname=` value
+  3. RPM spec `Name:` field
+  4. Repository folder basename (legacy fallback)
+"""
+
+from __future__ import annotations
+
+import os
+import re
+from typing import Optional
+
+from pkgmgr.core.repository.paths import RepoPaths
+
+
+_DEBIAN_PACKAGE_RE = re.compile(r"^Package:\s*(\S+)\s*$", re.MULTILINE)
+_PKGBUILD_NAME_RE = re.compile(r"^pkgname=([^\s#]+)\s*$", re.MULTILINE)
+_RPM_NAME_RE = re.compile(r"^Name:\s*(\S+)\s*$", re.MULTILINE)
+
+
+def _read(path: Optional[str]) -> str:
+    if not path or not os.path.isfile(path):
+        return ""
+    try:
+        with open(path, "r", encoding="utf-8") as f:
+            return f.read()
+    except OSError:
+        return ""
+
+
+def _extract(pattern: re.Pattern[str], text: str) -> Optional[str]:
+    if not text:
+        return None
+    match = pattern.search(text)
+    if not match:
+        return None
+    value = match.group(1).strip().strip('"').strip("'")
+    return value or None
+
+
+def resolve_package_name(paths: RepoPaths) -> str:
+    """Return the distro-package name for the repo, with a folder fallback.
+
+    The fallback uses `os.path.basename(paths.repo_dir)` so behaviour is
+    backwards-compatible for repos that ship no packaging metadata yet.
+    """
+    debian_name = _extract(_DEBIAN_PACKAGE_RE, _read(paths.debian_control))
+    if debian_name:
+        return debian_name
+
+    pkgbuild_name = _extract(_PKGBUILD_NAME_RE, _read(paths.arch_pkgbuild))
+    if pkgbuild_name:
+        return pkgbuild_name
+
+    rpm_name = _extract(_RPM_NAME_RE, _read(paths.rpm_spec))
+    if rpm_name:
+        return rpm_name
+
+    return os.path.basename(paths.repo_dir) or "package"

src/pkgmgr/actions/release/workflow.py

@@ -24,6 +24,7 @@ from .git_ops import (
     is_highest_version_tag,
     update_latest_tag,
 )
+from .package_name import resolve_package_name
 from .prompts import confirm_proceed_release, should_delete_branch
 from .versioning import bump_semver, determine_current_version
 
@@ -90,7 +91,7 @@ def _release_impl(
         if changelog_message.strip():
             effective_message = changelog_message.strip()
 
-    package_name = os.path.basename(repo_root) or "package-manager"
+    package_name = resolve_package_name(paths)
 
     if paths.debian_changelog:
         update_debian_changelog(

src/pkgmgr/actions/repository/_parallel.py

@@ -83,9 +83,7 @@ def run_on_repos(
 
     if failed:
         if effective_jobs > 1:
-            print(
-                f"\n[SUMMARY] {len(failed)} of {len(repos)} {op_name}(s) failed:"
-            )
+            print(f"\n[SUMMARY] {len(failed)} of {len(repos)} {op_name}(s) failed:")
             for ident, _msg in failed:
                 print(f"  - {ident}")
         sys.exit(1)

src/pkgmgr/actions/repository/pull.py

@@ -28,7 +28,10 @@ def _verify_one(
 ) -> Tuple[bool, bool, List[str]]:
     """Returns (has_verified_info, verified_ok, errors)."""
     verified_ok, errors, _commit, _key = verify_repository(
-        repo, repo_dir, mode="pull", no_verification=no_verification,
+        repo,
+        repo_dir,
+        mode="pull",
+        no_verification=no_verification,
     )
     return (bool(repo.get("verified")), verified_ok, errors)
 
@@ -56,9 +59,7 @@ def _verify_all(
             for repo, _ident, rd in candidates
         ]
         results = [f.result() for f in futures]
-    return [
-        (ident, rd, *res) for (_repo, ident, rd), res in zip(candidates, results)
-    ]
+    return [(ident, rd, *res) for (_repo, ident, rd), res in zip(candidates, results)]
 
 
 def pull_with_verification(
@@ -95,7 +96,12 @@ def pull_with_verification(
 
     approved: List[RepoRef] = []
     for ident, rd, has_verified_info, verified_ok, errors in verify_results:
-        if not preview and not no_verification and has_verified_info and not verified_ok:
+        if (
+            not preview
+            and not no_verification
+            and has_verified_info
+            and not verified_ok
+        ):
             print(f"Warning: Verification failed for {ident}:")
             for err in errors:
                 print(f"  - {err}")

src/pkgmgr/core/repository/paths.py

@@ -36,6 +36,7 @@ class RepoPaths:
     # Packaging-related files
     arch_pkgbuild: Optional[str]
     debian_changelog: Optional[str]
+    debian_control: Optional[str]
     rpm_spec: Optional[str]
 
 
@@ -102,6 +103,13 @@ def resolve_repo_paths(repo_dir: str) -> RepoPaths:
         ]
     )
 
+    debian_control = _first_existing(
+        [
+            os.path.join(repo_dir, "packaging", "debian", "control"),
+            os.path.join(repo_dir, "debian", "control"),
+        ]
+    )
+
     # RPM spec: prefer the canonical file, else first spec in packaging/fedora, else first spec in repo root.
     rpm_spec = _first_existing(
         [
@@ -122,5 +130,6 @@ def resolve_repo_paths(repo_dir: str) -> RepoPaths:
         changelog_md=changelog_md,
         arch_pkgbuild=arch_pkgbuild,
         debian_changelog=debian_changelog,
+        debian_control=debian_control,
         rpm_spec=rpm_spec,
     )