release: v1.2.0 (#26) — merge #6/#8/#9/#17/#18/#19

# Conflicts:
#	bcc.py
#	bcc_core.py
#	tests/test_core.py

bcc.py

@@ -11,13 +11,23 @@ Run:  python mcp_manager.py
 from __future__ import annotations
 
 import sys
+import time
 from pathlib import Path
 
-from PySide6.QtCore import QRect, QSettings, QSize, Qt, QThread, QTimer, Signal
+from PySide6.QtCore import QRect, QSettings, QSize, Qt, QThread, QTimer, QUrl, Signal
-from PySide6.QtGui import QAction, QColor, QGuiApplication, QPainter
+from PySide6.QtGui import (
+    QAction,
+    QColor,
+    QDesktopServices,
+    QGuiApplication,
+    QIcon,
+    QPainter,
+    QPixmap,
+)
 from PySide6.QtWidgets import (
     QAbstractItemView,
     QApplication,
+    QCheckBox,
     QComboBox,
     QDialog,
     QDialogButtonBox,
@@ -147,6 +157,23 @@ class SpawnTester(QThread):
         self.done.emit(result)
 
 
+class UpdateCheckWorker(QThread):
+    """
+    Fetches the latest release from the Gitea releases API off the UI thread.
+
+    Notify-only: `core.fetch_latest_release()` only ever reads release
+    metadata (a version tag + a URL) and never downloads or replaces the
+    running binary. Fails quiet — emits None on any network problem — so
+    it's safe to fire unattended from a silent startup check as well as from
+    the About dialog's "Check for updates" button.
+    """
+
+    done = Signal(object)  # dict | None
+
+    def run(self):
+        self.done.emit(core.fetch_latest_release())
+
+
 # --------------------------------------------------------------------------- #
 # Small reusable: key/value editor (for env and headers)
 # --------------------------------------------------------------------------- #
@@ -374,6 +401,9 @@ class ServerEditor(QFrame):
         self.spawn_btn.setToolTip("Spawn the server for 3 s and report whether it starts cleanly")
         self.spawn_btn.clicked.connect(self._test_spawn)
         self.spawn_btn.setVisible(False)
+        self.logs_btn = QPushButton("View logs")
+        self.logs_btn.setToolTip("Open this server's MCP log in a read-only, auto-tailing viewer")
+        self.logs_btn.clicked.connect(self._view_logs)
         self.details_btn = QPushButton("Details ▸")
         self.details_btn.setCheckable(True)
         self.details_btn.toggled.connect(self._toggle_diag)
@@ -384,6 +414,7 @@ class ServerEditor(QFrame):
         dep.addWidget(self.fix_btn)
         dep.addWidget(self.test_btn)
         dep.addWidget(self.spawn_btn)
+        dep.addWidget(self.logs_btn)
         dep.addWidget(self.details_btn)
         dep.addWidget(recheck)
         outer.addLayout(dep)
@@ -728,6 +759,13 @@ class ServerEditor(QFrame):
         elif self.diag_card.isVisible():
             self.diag_text.setPlainText(self._full_diag_text())
 
+    def _view_logs(self):
+        name = self.current_name()
+        if not name:
+            return
+        dlg = LogViewerDialog(self.window(), name)
+        dlg.exec()
+
 
 # --------------------------------------------------------------------------- #
 # Arguments editor: one line = one argument, with a numbered gutter so that
@@ -1090,6 +1128,272 @@ class PasteDialog(QDialog):
             self.err.setText(str(e))
 
 
+# --------------------------------------------------------------------------- #
+# Log viewer dialog (issue #6): a read-only, auto-tailing view of a single
+# server's MCP log file. Polls on a QTimer instead of watching the filesystem
+# so it works the same on every platform; never writes to the log.
+# --------------------------------------------------------------------------- #
+class LogViewerDialog(QDialog):
+    POLL_MS = 1500
+    MAX_TAIL_BYTES = 300_000
+
+    def __init__(self, parent, server_name: str):
+        super().__init__(parent)
+        self._name = server_name
+        self._last_path: Path | None = None
+        self._last_size: int | None = None
+        self.setWindowTitle(f"Logs — {server_name}")
+        self.resize(760, 520)
+
+        v = QVBoxLayout(self)
+        v.setSpacing(8)
+
+        self.path_label = QLabel("")
+        self.path_label.setObjectName("muted")
+        self.path_label.setWordWrap(True)
+        v.addWidget(self.path_label)
+
+        self.view = QPlainTextEdit()
+        self.view.setObjectName("diag")
+        self.view.setReadOnly(True)
+        self.view.setLineWrapMode(QPlainTextEdit.LineWrapMode.NoWrap)
+        v.addWidget(self.view, 1)
+
+        row = QHBoxLayout()
+        self.status_label = QLabel("")
+        self.status_label.setObjectName("muted")
+        row.addWidget(self.status_label, 1)
+        refresh_btn = QPushButton("Refresh now")
+        refresh_btn.clicked.connect(self._poll)
+        row.addWidget(refresh_btn)
+        close_btn = QPushButton("Close")
+        close_btn.setObjectName("primary")
+        close_btn.clicked.connect(self.accept)
+        row.addWidget(close_btn)
+        v.addLayout(row)
+
+        self._timer = QTimer(self)
+        self._timer.setInterval(self.POLL_MS)
+        self._timer.timeout.connect(self._poll)
+        self._timer.start()
+
+        self._poll()
+
+    def _poll(self):
+        path = core.server_log_path(self._name)
+        if path is None:
+            self._last_path = None
+            self._last_size = None
+            self.path_label.setText(f"No log file for '{self._name}' yet.")
+            self.view.setPlaceholderText(
+                "No log yet — this fills in once the server has run at least once "
+                "and produced output."
+            )
+            self.view.clear()
+            self.status_label.setText("Waiting…")
+            return
+
+        self.path_label.setText(str(path))
+        try:
+            size = path.stat().st_size
+        except OSError:
+            self.status_label.setText("Log file disappeared.")
+            return
+
+        # Nothing changed since the last poll -> skip the re-read/re-render.
+        if path == self._last_path and size == self._last_size:
+            return
+
+        was_at_bottom = self._is_scrolled_to_bottom()
+        text, truncated = self._read_tail(path)
+        self.view.setPlainText(text)
+        self.status_label.setText(
+            f"Showing last {self.MAX_TAIL_BYTES // 1000} KB of the log." if truncated else ""
+        )
+        if was_at_bottom:
+            self._scroll_to_bottom()
+
+        self._last_path = path
+        self._last_size = size
+
+    def _read_tail(self, path: Path) -> tuple[str, bool]:
+        try:
+            size = path.stat().st_size
+            with open(path, "rb") as f:
+                truncated = size > self.MAX_TAIL_BYTES
+                if truncated:
+                    f.seek(size - self.MAX_TAIL_BYTES)
+                data = f.read()
+        except OSError as e:
+            return f"(could not read log: {e})", False
+        text = data.decode("utf-8", errors="replace")
+        if truncated:
+            nl = text.find("\n")
+            if nl != -1:
+                text = text[nl + 1 :]
+            text = "… (earlier lines truncated) …\n" + text
+        return text, truncated
+
+    def _is_scrolled_to_bottom(self) -> bool:
+        sb = self.view.verticalScrollBar()
+        return sb.value() >= sb.maximum() - 4
+
+    def _scroll_to_bottom(self):
+        sb = self.view.verticalScrollBar()
+        sb.setValue(sb.maximum())
+
+    def closeEvent(self, event):
+        self._timer.stop()
+        super().closeEvent(event)
+
+
+# --------------------------------------------------------------------------- #
+# About dialog
+# --------------------------------------------------------------------------- #
+class AboutDialog(QDialog):
+    """
+    App info + a manual "Check for updates" action.
+
+    Shows nothing sensitive: app name, icon, version (from
+    core.__version__), and links opened in the system browser via
+    QDesktopServices.openUrl — never navigated to in-app. The update check
+    itself only ever reads release metadata (see UpdateCheckWorker); it
+    never downloads or replaces the running binary.
+    """
+
+    def __init__(self, parent=None):
+        super().__init__(parent)
+        self.setWindowTitle("About Better Claude Config")
+        self.setFixedWidth(440)
+        self._worker: UpdateCheckWorker | None = None
+        self._release_url: str | None = None
+
+        icon_path = (
+            Path(__file__).resolve().parent / "icons" / "twin-gears" / "rounded" / "icon-128.png"
+        )
+        if icon_path.is_file():
+            self.setWindowIcon(QIcon(str(icon_path)))
+
+        v = QVBoxLayout(self)
+        v.setSpacing(10)
+
+        head = QHBoxLayout()
+        head.setSpacing(12)
+        icon_lbl = QLabel()
+        if icon_path.is_file():
+            icon_lbl.setPixmap(
+                QPixmap(str(icon_path)).scaled(
+                    56,
+                    56,
+                    Qt.AspectRatioMode.KeepAspectRatio,
+                    Qt.TransformationMode.SmoothTransformation,
+                )
+            )
+        head.addWidget(icon_lbl)
+
+        title_box = QVBoxLayout()
+        title_box.setSpacing(2)
+        name_lbl = QLabel("Better Claude Config")
+        name_lbl.setObjectName("h1")
+        title_box.addWidget(name_lbl)
+        ver_lbl = QLabel(f"Version {core.__version__}")
+        ver_lbl.setObjectName("muted")
+        title_box.addWidget(ver_lbl)
+        head.addLayout(title_box, 1)
+        v.addLayout(head)
+
+        desc = QLabel(
+            "A cross-platform GUI for editing the mcpServers block of Claude "
+            "Desktop and Claude Code configs."
+        )
+        desc.setObjectName("muted")
+        desc.setWordWrap(True)
+        v.addWidget(desc)
+
+        if sys.platform == "darwin":
+            note = QLabel(
+                "This build isn't notarized by Apple. If macOS blocks it on first "
+                "launch, right-click the app  ▸  Open, or allow it under System "
+                "Settings  ▸  Privacy & Security."
+            )
+            note.setObjectName("muted")
+            note.setWordWrap(True)
+            v.addWidget(note)
+
+        links = QHBoxLayout()
+        for text, url in (
+            ("Repository", core.REPO_URL),
+            ("Issues", core.ISSUES_URL),
+            ("MIT License", core.LICENSE_URL),
+        ):
+            btn = QPushButton(text)
+            btn.setFlat(True)
+            btn.setCursor(Qt.CursorShape.PointingHandCursor)
+            btn.clicked.connect(lambda _=False, u=url: QDesktopServices.openUrl(QUrl(u)))
+            links.addWidget(btn)
+        links.addStretch()
+        v.addLayout(links)
+
+        # --- update check ----------------------------------------------- #
+        upd_row = QHBoxLayout()
+        self.check_btn = QPushButton("Check for updates")
+        self.check_btn.clicked.connect(self._check_for_updates)
+        upd_row.addWidget(self.check_btn)
+        self.update_status = QLabel("")
+        self.update_status.setObjectName("muted")
+        self.update_status.setWordWrap(True)
+        upd_row.addWidget(self.update_status, 1)
+        v.addLayout(upd_row)
+
+        self.release_btn = QPushButton("Open releases page")
+        self.release_btn.setCursor(Qt.CursorShape.PointingHandCursor)
+        self.release_btn.clicked.connect(self._open_release_page)
+        self.release_btn.hide()
+        v.addWidget(self.release_btn)
+
+        self.auto_check_box = QCheckBox("Automatically check for updates on startup")
+        st = QSettings("BCC", "BetterClaudeConfig")
+        self.auto_check_box.setChecked(bool(st.value("update/autoCheck", True, type=bool)))
+        self.auto_check_box.toggled.connect(self._toggle_auto_check)
+        v.addWidget(self.auto_check_box)
+
+        btns = QDialogButtonBox(QDialogButtonBox.StandardButton.Close)
+        btns.rejected.connect(self.reject)
+        btns.button(QDialogButtonBox.StandardButton.Close).clicked.connect(self.accept)
+        v.addWidget(btns)
+
+    def _toggle_auto_check(self, on: bool):
+        QSettings("BCC", "BetterClaudeConfig").setValue("update/autoCheck", on)
+
+    def _check_for_updates(self):
+        self.check_btn.setEnabled(False)
+        self.release_btn.hide()
+        self.update_status.setStyleSheet(f"color: {MUTED};")
+        self.update_status.setText("Checking…")
+        self._worker = UpdateCheckWorker()
+        self._worker.done.connect(self._on_check_done)
+        self._worker.start()
+
+    def _on_check_done(self, release: dict | None):
+        self.check_btn.setEnabled(True)
+        self._worker = None
+        if not release:
+            self.update_status.setStyleSheet(f"color: {MUTED};")
+            self.update_status.setText("Couldn't check for updates (offline?).")
+            return
+        if core.is_newer_version(core.__version__, release["version"]):
+            self.update_status.setStyleSheet(f"color: {ACCENT};")
+            self.update_status.setText(f"{release['version']} available.")
+            self._release_url = release.get("url") or core.RELEASES_URL
+            self.release_btn.show()
+        else:
+            self.update_status.setStyleSheet(f"color: {GOOD};")
+            self.update_status.setText("You're up to date.")
+
+    def _open_release_page(self):
+        QDesktopServices.openUrl(QUrl(self._release_url or core.RELEASES_URL))
+
+
 # --------------------------------------------------------------------------- #
 # Main window
 # --------------------------------------------------------------------------- #
@@ -1099,12 +1403,13 @@ class MainWindow(QMainWindow):
         self.setWindowTitle("Better Claude Config")
         self.resize(940, 640)
         self.setAcceptDrops(True)
+        self._build_menu_bar()
 
         self.profiles: list[core.Profile] = []
         self.full_config: dict = {}
         self.servers: list[core.ServerEntry] = []
         self.current_profile: core.Profile | None = None
-        self._loaded_mtime: float | None = None
+        self._loaded_stat: core.ConfigStat | None = None
         self.dirty = False
         self._suppress_table = False
         self._suppress_sel = False
@@ -1135,12 +1440,53 @@ class MainWindow(QMainWindow):
 
         root.addLayout(self._build_actionbar())
 
+        status_row = QHBoxLayout()
+        status_row.setContentsMargins(0, 0, 0, 0)
         self.status = QLabel("Ready.")
         self.status.setObjectName("statusbar")
-        root.addWidget(self.status)
+        status_row.addWidget(self.status, 1)
+        self.restart_btn = QPushButton("Restart Claude Desktop")
+        self.restart_btn.setToolTip(
+            "Quit and relaunch Claude Desktop so the saved config takes effect"
+        )
+        self.restart_btn.clicked.connect(self._restart_claude_desktop)
+        self.restart_btn.hide()
+        status_row.addWidget(self.restart_btn)
+        root.addLayout(status_row)
 
         self._restore_layout()
         self.reload_profiles()
+        self._maybe_auto_check_updates()
+
+    # --- menu bar ---------------------------------------------------------- #
+    def _build_menu_bar(self):
+        help_menu = self.menuBar().addMenu("&Help")
+        about_action = QAction("About Better Claude Config…", self)
+        about_action.triggered.connect(self._show_about)
+        help_menu.addAction(about_action)
+
+    def _show_about(self):
+        AboutDialog(self).exec()
+
+    # --- update check (silent, throttled, off-thread) --------------------- #
+    def _maybe_auto_check_updates(self):
+        st = QSettings("BCC", "BetterClaudeConfig")
+        if not bool(st.value("update/autoCheck", True, type=bool)):
+            return
+        last = float(st.value("update/lastCheck", 0.0, type=float) or 0.0)
+        if (time.time() - last) < 86400:  # at most once/day
+            return
+        st.setValue("update/lastCheck", time.time())
+        self._startup_update_worker = UpdateCheckWorker()
+        self._startup_update_worker.done.connect(self._on_startup_update_checked)
+        self._startup_update_worker.start()
+
+    def _on_startup_update_checked(self, release: dict | None):
+        self._startup_update_worker = None
+        if release and core.is_newer_version(core.__version__, release["version"]):
+            self.status.setText(
+                f"Update available: {release['version']}  ·  Help ▸ About to view it."
+            )
 
     # --- layout persistence ---------------------------------------------- #
     def _restore_layout(self):
@@ -1380,10 +1726,11 @@ class MainWindow(QMainWindow):
                 return
             self.full_config = cfg
             repaired = True
-        self._loaded_mtime = core.config_mtime(profile.path)
+        self._loaded_stat = core.config_fingerprint(profile.path)
         self.current_profile = profile
         self.servers = core.extract_servers(self.full_config)
         self.dirty = False
+        self.restart_btn.hide()
         self._undo_stack.clear()
         self.undo_btn.setEnabled(False)
         self._refresh_tables(select_index=0 if self.servers else -1)
@@ -1620,34 +1967,38 @@ class MainWindow(QMainWindow):
         self._refresh_tables(select_index=min(idx, len(self.servers) - 1))
         self._mark_dirty()
 
+    def _import_server(self, name: str, data: dict) -> tuple[bool, bool]:
+        """
+        Add a pasted/dropped `name`/`data` server to self.servers, resolving
+        a name collision with an explicit prompt (never a silent overwrite).
+
+        Returns (added, replaced).
+        """
+        existing = {s.name: i for i, s in enumerate(self.servers)}
+        if name in existing:
+            ans = QMessageBox.question(
+                self,
+                "Server exists",
+                f"“{name}” already exists. Replace it?\n\nYes = replace · No = keep both (renamed)",
+                QMessageBox.StandardButton.Yes | QMessageBox.StandardButton.No,
+            )
+            if ans == QMessageBox.StandardButton.Yes:
+                self.servers[existing[name]].data = data
+                return False, True
+            name = core.resolve_name_collision(name, {s.name for s in self.servers})
+        self.servers.append(core.ServerEntry(name, data, True))
+        return True, False
+
     def paste_json(self):
         dlg = PasteDialog(self)
         if dlg.exec() != QDialog.DialogCode.Accepted or not dlg.result_servers:
             return
         self._push_undo()
         added, replaced = 0, 0
-        existing = {s.name: i for i, s in enumerate(self.servers)}
         for name, data in dlg.result_servers.items():
-            if name in existing:
+            a, r = self._import_server(name, data)
-                ans = QMessageBox.question(
+            added += int(a)
-                    self,
+            replaced += int(r)
-                    "Server exists",
-                    f"“{name}” already exists. Replace it?\n\nYes = replace · No = keep both (renamed)",
-                    QMessageBox.StandardButton.Yes | QMessageBox.StandardButton.No,
-                )
-                if ans == QMessageBox.StandardButton.Yes:
-                    self.servers[existing[name]].data = data
-                    replaced += 1
-                    continue
-                new = f"{name}-2"
-                k = 3
-                names = {s.name for s in self.servers}
-                while new in names:
-                    new = f"{name}-{k}"
-                    k += 1
-                name = new
-            self.servers.append(core.ServerEntry(name, data, True))
-            added += 1
         self._refresh_tables(select_index=len(self.servers) - 1)
         self._mark_dirty()
         self.status.setText(f"Imported {added} added, {replaced} replaced. Review and Save.")
@@ -1719,11 +2070,14 @@ class MainWindow(QMainWindow):
             return
 
         # Stale-file check: if the file changed on disk since we loaded it, prompt.
-        disk_mtime = core.config_mtime(self.current_profile.path)
+        # Compare mtime AND size (not mtime alone) so a concurrent external write
+        # that lands within the mtime resolution window, or that restores the
+        # original mtime, still gets caught.
+        disk_stat = core.config_fingerprint(self.current_profile.path)
         if (
-            disk_mtime is not None
+            disk_stat is not None
-            and self._loaded_mtime is not None
+            and self._loaded_stat is not None
-            and disk_mtime != self._loaded_mtime
+            and disk_stat != self._loaded_stat
         ):
             changed_keys, server_diff = core.external_change_summary(
                 self.full_config, self.current_profile.path
@@ -1744,7 +2098,7 @@ class MainWindow(QMainWindow):
                     QMessageBox.critical(self, "Save failed", str(e))
                     return
                 self.full_config = fresh
-                self._loaded_mtime = core.config_mtime(self.current_profile.path)
+                self._loaded_stat = core.config_fingerprint(self.current_profile.path)
                 self.current_profile.config_exists = True
                 self.dirty = False
                 self.save_btn.setEnabled(False)
@@ -1753,6 +2107,7 @@ class MainWindow(QMainWindow):
                     f"Merged & saved {self.current_profile.path}{bnote}"
                     f"  ·  Restart {self.current_profile.label} to apply."
                 )
+                self._offer_restart_button()
                 return
             # else OVERWRITE: fall through to normal write
 
@@ -1762,7 +2117,7 @@ class MainWindow(QMainWindow):
         except Exception as e:
             QMessageBox.critical(self, "Save failed", str(e))
             return
-        self._loaded_mtime = core.config_mtime(self.current_profile.path)
+        self._loaded_stat = core.config_fingerprint(self.current_profile.path)
         self.current_profile.config_exists = True
         self.dirty = False
         self.save_btn.setEnabled(False)
@@ -1770,6 +2125,29 @@ class MainWindow(QMainWindow):
         self.status.setText(
             f"Saved {self.current_profile.path}{bnote}  ·  Restart {self.current_profile.label} to apply."
         )
+        self._offer_restart_button()
+
+    # --- restart Claude Desktop (issue #9) -------------------------------- #
+    def _offer_restart_button(self):
+        """Show the 'Restart Claude Desktop' button after a successful save,
+        but only when the just-saved profile is Claude Desktop -- restarting
+        makes no sense for Claude Code, which has no GUI process to bounce."""
+        if self.current_profile and core.profile_targets_claude_desktop(self.current_profile):
+            self.restart_btn.show()
+        else:
+            self.restart_btn.hide()
+
+    def _restart_claude_desktop(self):
+        self.restart_btn.setEnabled(False)
+        try:
+            result = core.restart_claude_desktop()
+        finally:
+            self.restart_btn.setEnabled(True)
+        self.restart_btn.hide()
+        if result.success:
+            self.status.setText(f"{self.status.text()}  ·  {result.detail}")
+        else:
+            QMessageBox.warning(self, "Restart failed", result.detail)
 
     def _restore_from_backup(self):
         if not self.current_profile:
@@ -1798,6 +2176,7 @@ class MainWindow(QMainWindow):
     # --- dirty / status -------------------------------------------------- #
     def _mark_dirty(self):
         self.dirty = True
+        self.restart_btn.hide()
         self._validate()
         self._update_status(saved=False)
 
@@ -1835,15 +2214,16 @@ class MainWindow(QMainWindow):
                 QMessageBox.warning(self, "Couldn't import", f"{Path(path).name}:\n{ex}")
                 continue
             self._push_undo()
+            added, replaced = 0, 0
             for name, data in servers.items():
-                names = {s.name for s in self.servers}
+                a, r = self._import_server(name, data)
-                if name in names:
+                added += int(a)
-                    name = f"{name}-imported"
+                replaced += int(r)
-                self.servers.append(core.ServerEntry(name, data, True))
             self._refresh_tables(select_index=len(self.servers) - 1)
             self._mark_dirty()
             self.status.setText(
-                f"Imported {len(servers)} server(s) from {Path(path).name}. Review and Save."
+                f"Imported {added} added, {replaced} replaced from {Path(path).name}. "
+                "Review and Save."
             )
             break
 

bcc_core.py

@@ -29,6 +29,7 @@ import threading
 import time
 from dataclasses import dataclass
 from pathlib import Path
+from typing import NamedTuple
 from urllib.parse import urlparse
 
 CONFIG_FILENAME = "claude_desktop_config.json"
@@ -46,6 +47,112 @@ MAX_BACKUPS = 15
 KNOWN_FIELDS = {"command", "args", "env", "url", "type", "headers"}
 
 
+# --------------------------------------------------------------------------- #
+# Version / update checking
+#
+# __version__ is the single source of truth for the app version (must match
+# pyproject.toml's [project] version). The About dialog and the update
+# checker both read this constant instead of hard-coding a version string.
+#
+# The update checker is notify-only: it reads release metadata from the
+# repo's Gitea releases API and NEVER downloads or replaces the running
+# binary. All network I/O here is fail-quiet (returns None on any problem)
+# so it's safe to run unattended, off the UI thread, at startup.
+# --------------------------------------------------------------------------- #
+__version__ = "1.2.0"
+
+REPO_URL = "https://git.avezzano.io/the_og/better-claude-config"
+ISSUES_URL = f"{REPO_URL}/issues"
+RELEASES_URL = f"{REPO_URL}/releases"
+LICENSE_URL = f"{REPO_URL}/raw/branch/main/LICENSE"
+
+# Public repo -> anonymously reachable, no auth/token needed or embedded.
+_RELEASES_API_URL = (
+    "https://git.avezzano.io/api/v1/repos/the_og/better-claude-config/releases/latest"
+)
+
+
+def parse_version(v: str) -> tuple[int, ...]:
+    """
+    Parse a version string into a tuple of ints for numeric comparison.
+
+    Strips a leading 'v' ("v1.2.3" -> "1.2.3") and any pre-release/build
+    metadata after a '-' or '+' ("1.2.3-beta.1" -> "1.2.3"). Stops at the
+    first non-numeric dotted component. Empty or entirely non-numeric input
+    returns an empty tuple rather than raising, so a malformed tag from a
+    flaky API response degrades gracefully instead of crashing the caller.
+    """
+    s = (v or "").strip()
+    if s[:1].lower() == "v":
+        s = s[1:]
+    s = re.split(r"[-+]", s, maxsplit=1)[0]
+    parts: list[int] = []
+    for chunk in s.split("."):
+        m = re.match(r"\d+", chunk)
+        if not m:
+            break
+        parts.append(int(m.group()))
+    return tuple(parts)
+
+
+def is_newer_version(current: str, candidate: str) -> bool:
+    """
+    True if `candidate` is a strictly newer version than `current`.
+
+    Comparison is purely numeric (major.minor.patch, ...) — NEVER a lexical
+    string compare, so "v2.0.0" vs "v10.0.0" resolves correctly instead of
+    sorting "2" after "10". Tuples of differing length are zero-padded before
+    comparing, so "1.2" and "1.2.0" are correctly treated as equal.
+
+    An unparseable `candidate` always yields False (nothing to report). An
+    unparseable `current` is treated as "0" for comparison purposes — a
+    malformed local version shouldn't silently suppress a real update.
+    """
+    cur = parse_version(current)
+    new = parse_version(candidate)
+    if not new:
+        return False
+    width = max(len(cur), len(new), 1)
+    cur = cur + (0,) * (width - len(cur))
+    new = new + (0,) * (width - len(new))
+    return new > cur
+
+
+def fetch_latest_release(timeout: float = 4.0) -> dict | None:
+    """
+    Query the repo's (public, anonymous) Gitea releases API for the latest
+    release. Returns {"version": "<tag>", "url": "<releases page>"} on
+    success, or None on ANY failure: network error, timeout, bad status,
+    malformed JSON, or a response missing tag_name.
+
+    Fail-quiet by design — this is meant to be called off the UI thread
+    (see UpdateCheckWorker in bcc.py) for both the About dialog's "Check for
+    updates" button and an optional silent startup check. Never downloads or
+    touches any binary; this only ever reads release metadata.
+    """
+    import urllib.error
+    import urllib.request
+
+    req = urllib.request.Request(
+        _RELEASES_API_URL,
+        headers={
+            "Accept": "application/json",
+            "User-Agent": f"BetterClaudeConfig/{__version__}",
+        },
+    )
+    try:
+        with urllib.request.urlopen(req, timeout=timeout) as r:
+            payload = json.loads(r.read().decode("utf-8"))
+    except (urllib.error.URLError, TimeoutError, ValueError, OSError):
+        return None
+    if not isinstance(payload, dict):
+        return None
+    tag = payload.get("tag_name")
+    if not tag or not isinstance(tag, str):
+        return None
+    return {"version": tag, "url": payload.get("html_url") or RELEASES_URL}
+
+
 # --------------------------------------------------------------------------- #
 # Data model
 # --------------------------------------------------------------------------- #
@@ -135,6 +242,17 @@ def profile_from_path(path: str | os.PathLike) -> Profile:
     return Profile(label=label, path=p, config_exists=p.is_file())
 
 
+def profile_targets_claude_desktop(profile: Profile) -> bool:
+    """
+    True when `profile` points at a Claude Desktop config
+    (claude_desktop_config.json), as opposed to Claude Code (~/.claude.json
+    or the legacy ~/.claude/settings.json). Used to gate Desktop-only actions
+    like "Restart Claude Desktop" so they never show up for a Claude Code
+    profile -- restarting the CLI makes no sense.
+    """
+    return Path(profile.path).name == CONFIG_FILENAME
+
+
 # --------------------------------------------------------------------------- #
 # Load / extract / apply
 # --------------------------------------------------------------------------- #
@@ -189,6 +307,25 @@ def extract_servers(cfg: dict) -> list[ServerEntry]:
     return out
 
 
+def resolve_name_collision(name: str, existing: set[str]) -> str:
+    """
+    Return a name guaranteed not to collide with `existing`.
+
+    If `name` isn't already taken it's returned unchanged. Otherwise a
+    `-2`, `-3`, ... suffix is appended until the result is unique — this is
+    the "keep both (renamed)" branch used by paste/import when the user
+    doesn't want to overwrite an existing server of the same name.
+    """
+    if name not in existing:
+        return name
+    n = 2
+    candidate = f"{name}-{n}"
+    while candidate in existing:
+        n += 1
+        candidate = f"{name}-{n}"
+    return candidate
+
+
 def apply_servers(cfg: dict, servers: list[ServerEntry]) -> dict:
     """
     Write the server list back into `cfg` in place, preserving every other key
@@ -380,6 +517,30 @@ def config_mtime(path: Path | str) -> float | None:
         return None
 
 
+class ConfigStat(NamedTuple):
+    """A snapshot of a config file's mtime + size.
+
+    Pairing size with mtime hardens stale-file detection beyond bare mtime
+    equality: a concurrent external write can land within the filesystem's
+    mtime resolution (e.g. same-second writes on ext4/HFS+) or have its mtime
+    restored by the writing process, in which case mtime alone would miss the
+    change. Comparing both fields catches those cases without the cost of a
+    full content hash.
+    """
+
+    mtime: float
+    size: int
+
+
+def config_fingerprint(path: Path | str) -> ConfigStat | None:
+    """Return the file's (mtime, size) snapshot, or None if it does not exist."""
+    try:
+        st = Path(path).stat()
+    except OSError:
+        return None
+    return ConfigStat(st.st_mtime, st.st_size)
+
+
 def external_change_summary(original_cfg: dict, path: Path | str) -> tuple[list[str], str]:
     """
     Compare original_cfg (what BCC loaded) with the current on-disk state.
@@ -474,7 +635,7 @@ def _normalize_unicode(text: str, notes: list[str]) -> str:
     out = text
     for junk in _JUNK_CHARS:
         out = out.replace(junk, "")
-    out = out.replace(" ", " ")  # non-breaking space
+    out = out.replace(chr(0xA0), " ")  # non-breaking space (defensive: avoid a literal char here)
     for smart, ascii_q in _QUOTE_MAP.items():
         out = out.replace(smart, ascii_q)
     if out != text:
@@ -1270,6 +1431,25 @@ def diagnostics_text(name: str, data: dict) -> str:
     return "\n".join(L)
 
 
+def server_log_path(name: str) -> Path | None:
+    """
+    The platform-specific Claude Desktop MCP server log file for `name`, or
+    None if it doesn't exist yet (nothing has been logged for this server).
+
+    macOS  : ~/Library/Logs/Claude/mcp-server-<name>.log   (one file per server)
+    Windows: %APPDATA%\\Claude\\logs\\mcp.log               (one shared file)
+    Other platforms: Claude Desktop doesn't ship a log in a known location -> None.
+    """
+    if sys.platform == "darwin":
+        p = Path.home() / "Library" / "Logs" / "Claude" / f"mcp-server-{name}.log"
+    elif sys.platform.startswith("win"):
+        appdata = Path(os.environ.get("APPDATA", Path.home() / "AppData" / "Roaming"))
+        p = appdata / "Claude" / "logs" / "mcp.log"
+    else:
+        return None
+    return p if p.is_file() else None
+
+
 _STDERR_CAP = 4096  # bytes
 
 
@@ -1459,3 +1639,91 @@ def pin_command_path(data: dict, path: str | None = None) -> tuple[dict, str | N
                     out["args"] = args
                     return out, f"'{c}'  →  {resolved}"
     return data, None
+
+
+# --------------------------------------------------------------------------- #
+# Restart Claude Desktop (issue #9)
+#
+# Scoped strictly to Claude DESKTOP, the GUI app -- never Claude Code (the
+# CLI), which has no long-running process to bounce. Callers should gate this
+# behind profile_targets_claude_desktop() before offering it in the UI.
+# --------------------------------------------------------------------------- #
+class RestartResult(NamedTuple):
+    """Outcome of a restart_claude_desktop() attempt."""
+
+    success: bool
+    detail: str
+
+
+def _run_quiet(cmd: list[str]) -> None:
+    """Best-effort fire-and-forget command. Never raises: a nonzero exit (e.g.
+    pkill finding nothing to kill) is expected and not an error."""
+    with contextlib.suppress(OSError):
+        subprocess.run(cmd, capture_output=True)
+
+
+def _restart_claude_desktop_macos() -> RestartResult:
+    _run_quiet(["pkill", "-x", "Claude"])
+    try:
+        result = subprocess.run(["open", "-a", "Claude"], capture_output=True, text=True)
+    except OSError as e:
+        return RestartResult(False, f"Couldn't launch Claude Desktop: {e}")
+    if result.returncode != 0:
+        detail = (result.stderr or result.stdout or "").strip() or "'open -a Claude' failed"
+        return RestartResult(False, detail)
+    return RestartResult(True, "Claude Desktop restarted.")
+
+
+def _claude_windows_start_menu_shortcut() -> Path:
+    appdata = os.environ.get("APPDATA", str(Path.home()))
+    return Path(appdata) / "Microsoft" / "Windows" / "Start Menu" / "Programs" / "Claude.lnk"
+
+
+def _restart_claude_desktop_windows() -> RestartResult:
+    _run_quiet(["taskkill", "/IM", "Claude.exe", "/F"])
+    shortcut = _claude_windows_start_menu_shortcut()
+    try:
+        # `cmd /c start "" <target>` launches detached, the same as double-clicking
+        # the Start-menu shortcut, and returns immediately.
+        result = subprocess.run(
+            ["cmd", "/c", "start", "", str(shortcut)], capture_output=True, text=True
+        )
+    except OSError as e:
+        return RestartResult(False, f"Couldn't launch Claude Desktop: {e}")
+    if result.returncode != 0:
+        detail = (
+            result.stderr or result.stdout or ""
+        ).strip() or "failed to relaunch Claude Desktop"
+        return RestartResult(False, detail)
+    return RestartResult(True, "Claude Desktop restarted.")
+
+
+def _restart_claude_desktop_linux() -> RestartResult:
+    _run_quiet(["pkill", "claude"])
+    try:
+        # The Linux launcher is the app itself (no "open"-style helper), so it
+        # has to be started detached rather than waited on.
+        subprocess.Popen(
+            ["claude"],
+            stdin=subprocess.DEVNULL,
+            stdout=subprocess.DEVNULL,
+            stderr=subprocess.DEVNULL,
+            start_new_session=True,
+        )
+    except OSError as e:
+        return RestartResult(False, f"Couldn't launch Claude Desktop: {e}")
+    return RestartResult(True, "Claude Desktop restarted.")
+
+
+def restart_claude_desktop() -> RestartResult:
+    """
+    Kill and relaunch the Claude Desktop app so a freshly saved config takes
+    effect. The app not currently running is NOT a failure -- pkill/taskkill
+    exiting non-zero just means "nothing to kill", and we go straight to
+    relaunching. Only a failed relaunch is reported as success=False.
+    """
+    if sys.platform == "darwin":
+        return _restart_claude_desktop_macos()
+    if sys.platform.startswith("win"):
+        return _restart_claude_desktop_windows()
+    return _restart_claude_desktop_linux()

pyproject.toml

@@ -1,6 +1,6 @@
 [project]
 name = "better-claude-config"
-version = "1.1.0"
+version = "1.2.0"
 description = "Cross-platform GUI for editing the mcpServers block of Claude Desktop and Claude Code configs"
 readme = "README.md"
 license = { file = "LICENSE" }

tests/test_core.py

@@ -2,7 +2,10 @@
 proper test functions with tmp_path/monkeypatch fixtures)."""
 
 import json
+import os
 import sys
+import urllib.error
+import urllib.request
 
 import pytest
 
@@ -520,6 +523,42 @@ def test_config_mtime_returns_none_for_missing_file(tmp_path):
     assert c.config_mtime(tmp_path / "nonexistent.json") is None
 
 
+def test_config_fingerprint_returns_mtime_and_size_for_existing_file(tmp_path):
+    f = tmp_path / "cfg.json"
+    f.write_text("{}")
+    fp = c.config_fingerprint(f)
+    assert isinstance(fp, c.ConfigStat)
+    assert isinstance(fp.mtime, float)
+    assert fp.size == f.stat().st_size
+
+
+def test_config_fingerprint_returns_none_for_missing_file(tmp_path):
+    assert c.config_fingerprint(tmp_path / "nonexistent.json") is None
+
+
+def test_config_fingerprint_detects_size_change_when_mtime_is_unchanged(tmp_path):
+    """
+    Guards against the exact hole bare-mtime comparison has: an external write
+    that lands within the filesystem's mtime resolution (or that restores the
+    original mtime) must still be caught, because the file's size differs.
+    """
+    f = tmp_path / "cfg.json"
+    f.write_text('{"mcpServers": {}}')
+    original = c.config_fingerprint(f)
+    original_mtime_ns = f.stat().st_mtime_ns
+
+    # Overwrite with materially different (larger) content, then force the
+    # mtime back to its original value -- simulating a same-second external
+    # write, or a writer that preserves mtime.
+    f.write_text('{"mcpServers": {"new-server": {"command": "node", "args": ["a", "b", "c"]}}}')
+    os.utime(f, ns=(original_mtime_ns, original_mtime_ns))
+
+    updated = c.config_fingerprint(f)
+    assert updated.mtime == original.mtime  # mtime alone would say "unchanged"
+    assert updated.size != original.size  # size catches what mtime missed
+    assert updated != original  # the fingerprint as a whole detects the change
+
+
 def test_external_change_summary_detects_non_server_key_change(tmp_path):
     cfgpath = tmp_path / "cfg.json"
     original = {"numStartups": 1, "mcpServers": {"s": {"command": "node"}}}
@@ -638,3 +677,380 @@ def test_args_secret_warning_env_not_triggered():
 def test_args_secret_warning_empty():
     assert c.args_secret_warning({}) is None
     assert c.args_secret_warning({"args": []}) is None
+
+
+# --------------------------------------------------------------------------- #
+# resolve_name_collision (paste/import duplicate-name handling — issue #8)
+# --------------------------------------------------------------------------- #
+def test_resolve_name_collision_no_conflict_returns_unchanged():
+    assert c.resolve_name_collision("brave-search", {"other"}) == "brave-search"
+
+
+def test_resolve_name_collision_single_conflict_appends_dash_two():
+    assert c.resolve_name_collision("brave-search", {"brave-search"}) == "brave-search-2"
+
+
+def test_resolve_name_collision_skips_taken_suffixes():
+    existing = {"brave-search", "brave-search-2", "brave-search-3"}
+    assert c.resolve_name_collision("brave-search", existing) == "brave-search-4"
+
+
+def test_resolve_name_collision_empty_existing_set():
+    assert c.resolve_name_collision("brave-search", set()) == "brave-search"
+
+
+def test_resolve_name_collision_repeated_calls_stay_unique():
+    """Simulates dropping the same file twice in a row: each resolved name
+    must be fed back into `existing` before resolving the next one, or two
+    servers could end up sharing a name (and silently collapse into one
+    when apply_servers() rebuilds its dict at save time)."""
+    existing = {"brave-search"}
+    first = c.resolve_name_collision("brave-search", existing)
+    existing.add(first)
+    second = c.resolve_name_collision("brave-search", existing)
+    assert first != second
+    assert {first, second} == {"brave-search-2", "brave-search-3"}
+
+
+# --------------------------------------------------------------------------- #
+# server_log_path (in-app log viewer — issue #6)
+# --------------------------------------------------------------------------- #
+def test_server_log_path_macos_when_file_exists(tmp_path, monkeypatch):
+    monkeypatch.setattr(sys, "platform", "darwin")
+    monkeypatch.setattr(c.Path, "home", lambda: tmp_path)
+    log_dir = tmp_path / "Library" / "Logs" / "Claude"
+    log_dir.mkdir(parents=True)
+    (log_dir / "mcp-server-brave-search.log").write_text("hello")
+
+    result = c.server_log_path("brave-search")
+    assert result == log_dir / "mcp-server-brave-search.log"
+
+
+def test_server_log_path_macos_none_when_missing(tmp_path, monkeypatch):
+    monkeypatch.setattr(sys, "platform", "darwin")
+    monkeypatch.setattr(c.Path, "home", lambda: tmp_path)
+    assert c.server_log_path("brave-search") is None
+
+
+def test_server_log_path_windows_when_file_exists(tmp_path, monkeypatch):
+    # server_log_path branches on sys.platform only (never os.name), so the
+    # test doesn't have to touch os.name -- mutating that globally mid-test
+    # would also flip which concrete Path subclass pathlib hands out.
+    monkeypatch.setattr(sys, "platform", "win32")
+    monkeypatch.setenv("APPDATA", str(tmp_path))
+    log_dir = tmp_path / "Claude" / "logs"
+    log_dir.mkdir(parents=True)
+    (log_dir / "mcp.log").write_text("hello")
+
+    result = c.server_log_path("brave-search")
+    assert result == log_dir / "mcp.log"
+
+
+def test_server_log_path_windows_none_when_missing(tmp_path, monkeypatch):
+    monkeypatch.setattr(sys, "platform", "win32")
+    monkeypatch.setenv("APPDATA", str(tmp_path))
+    assert c.server_log_path("brave-search") is None
+
+
+def test_server_log_path_unsupported_platform_returns_none(tmp_path, monkeypatch):
+    monkeypatch.setattr(sys, "platform", "linux")
+    monkeypatch.setattr(c.Path, "home", lambda: tmp_path)
+    assert c.server_log_path("brave-search") is None
+
+
+# --------------------------------------------------------------------------- #
+# restart_claude_desktop / profile_targets_claude_desktop (issue #9)
+# --------------------------------------------------------------------------- #
+def test_profile_targets_claude_desktop_true_for_desktop_config():
+    p = c.Profile(label="Claude", path="/x/Claude/claude_desktop_config.json", config_exists=True)
+    assert c.profile_targets_claude_desktop(p)
+
+
+def test_profile_targets_claude_desktop_false_for_claude_code():
+    p = c.Profile(label="Claude Code", path="/home/me/.claude.json", config_exists=True)
+    assert not c.profile_targets_claude_desktop(p)
+
+
+def test_profile_targets_claude_desktop_false_for_legacy_settings():
+    p = c.Profile(
+        label="Claude Code (legacy settings.json)",
+        path="/home/me/.claude/settings.json",
+        config_exists=True,
+    )
+    assert not c.profile_targets_claude_desktop(p)
+
+
+class _FakeCompletedProcess:
+    def __init__(self, returncode=0, stdout="", stderr=""):
+        self.returncode = returncode
+        self.stdout = stdout
+        self.stderr = stderr
+
+
+def test_restart_claude_desktop_macos_commands(monkeypatch):
+    """macOS: pkill -x "Claude" then open -a Claude, in that order."""
+    calls = []
+
+    def fake_run(cmd, **kwargs):
+        calls.append(cmd)
+        return _FakeCompletedProcess(returncode=0)
+
+    monkeypatch.setattr(c.sys, "platform", "darwin")
+    monkeypatch.setattr(c.subprocess, "run", fake_run)
+    result = c.restart_claude_desktop()
+    assert result.success
+    assert calls[0] == ["pkill", "-x", "Claude"]
+    assert calls[1] == ["open", "-a", "Claude"]
+
+
+def test_restart_claude_desktop_macos_pkill_not_running_is_fine(monkeypatch):
+    """pkill exiting non-zero (nothing to kill) must NOT be treated as failure."""
+
+    def fake_run(cmd, **kwargs):
+        if cmd[0] == "pkill":
+            return _FakeCompletedProcess(returncode=1)  # no matching process
+        return _FakeCompletedProcess(returncode=0)
+
+    monkeypatch.setattr(c.sys, "platform", "darwin")
+    monkeypatch.setattr(c.subprocess, "run", fake_run)
+    result = c.restart_claude_desktop()
+    assert result.success
+
+
+def test_restart_claude_desktop_macos_relaunch_failure_reported(monkeypatch):
+    def fake_run(cmd, **kwargs):
+        if cmd[0] == "open":
+            return _FakeCompletedProcess(returncode=1, stderr="Unable to find application")
+        return _FakeCompletedProcess(returncode=1)
+
+    monkeypatch.setattr(c.sys, "platform", "darwin")
+    monkeypatch.setattr(c.subprocess, "run", fake_run)
+    result = c.restart_claude_desktop()
+    assert not result.success
+    assert "Unable to find application" in result.detail
+
+
+def test_restart_claude_desktop_macos_pkill_binary_missing_does_not_raise(monkeypatch):
+    """pkill raising OSError (binary missing) must be swallowed, not propagated --
+    relaunch is still attempted."""
+
+    def fake_run(cmd, **kwargs):
+        if cmd[0] == "pkill":
+            raise OSError("pkill not found")
+        return _FakeCompletedProcess(returncode=0)
+
+    monkeypatch.setattr(c.sys, "platform", "darwin")
+    monkeypatch.setattr(c.subprocess, "run", fake_run)
+    result = c.restart_claude_desktop()
+    assert result.success
+
+
+def test_restart_claude_desktop_windows_commands(monkeypatch):
+    """Windows: taskkill the process, then relaunch via the Start-menu shortcut."""
+    calls = []
+
+    def fake_run(cmd, **kwargs):
+        calls.append(cmd)
+        return _FakeCompletedProcess(returncode=0)
+
+    monkeypatch.setattr(c.sys, "platform", "win32")
+    monkeypatch.setattr(c.subprocess, "run", fake_run)
+    result = c.restart_claude_desktop()
+    assert result.success
+    assert calls[0] == ["taskkill", "/IM", "Claude.exe", "/F"]
+    assert calls[1][:3] == ["cmd", "/c", "start"]
+    assert calls[1][-1].endswith("Claude.lnk")
+
+
+def test_restart_claude_desktop_windows_relaunch_failure_reported(monkeypatch):
+    def fake_run(cmd, **kwargs):
+        if cmd[0] == "cmd":
+            return _FakeCompletedProcess(returncode=1, stderr="not found")
+        return _FakeCompletedProcess(returncode=0)
+
+    monkeypatch.setattr(c.sys, "platform", "win32")
+    monkeypatch.setattr(c.subprocess, "run", fake_run)
+    result = c.restart_claude_desktop()
+    assert not result.success
+    assert "not found" in result.detail
+
+
+def test_restart_claude_desktop_linux_commands(monkeypatch):
+    """Linux: pkill claude, then relaunch via a detached Popen (no waiting)."""
+    run_calls = []
+    popen_calls = []
+
+    def fake_run(cmd, **kwargs):
+        run_calls.append(cmd)
+        return _FakeCompletedProcess(returncode=0)
+
+    class _FakePopen:
+        def __init__(self, cmd, **kwargs):
+            popen_calls.append((cmd, kwargs))
+
+    monkeypatch.setattr(c.sys, "platform", "linux")
+    monkeypatch.setattr(c.subprocess, "run", fake_run)
+    monkeypatch.setattr(c.subprocess, "Popen", _FakePopen)
+    result = c.restart_claude_desktop()
+    assert result.success
+    assert run_calls == [["pkill", "claude"]]
+    cmd, kwargs = popen_calls[0]
+    assert cmd == ["claude"]
+    assert kwargs.get("start_new_session") is True
+
+
+def test_restart_claude_desktop_linux_popen_failure_reported(monkeypatch):
+    def fake_run(cmd, **kwargs):
+        return _FakeCompletedProcess(returncode=0)
+
+    def fake_popen(cmd, **kwargs):
+        raise OSError("no such file or directory")
+
+    monkeypatch.setattr(c.sys, "platform", "linux")
+    monkeypatch.setattr(c.subprocess, "run", fake_run)
+    monkeypatch.setattr(c.subprocess, "Popen", fake_popen)
+    result = c.restart_claude_desktop()
+    assert not result.success
+    assert "Claude Desktop" in result.detail
+
+
+# --------------------------------------------------------------------------- #
+# Version / update checking
+# --------------------------------------------------------------------------- #
+def test_dunder_version_matches_pyproject():
+    # Guards against the version drifting out of sync between the two places
+    # a human might bump it.
+    assert c.__version__ == "1.2.0"
+
+
+def test_parse_version_basic():
+    assert c.parse_version("1.2.3") == (1, 2, 3)
+
+
+def test_parse_version_strips_v_prefix():
+    assert c.parse_version("v1.2.3") == (1, 2, 3)
+
+
+def test_parse_version_strips_prerelease_suffix():
+    assert c.parse_version("1.2.3-beta.1") == (1, 2, 3)
+    assert c.parse_version("1.2.3+build5") == (1, 2, 3)
+
+
+def test_parse_version_malformed_returns_empty_tuple():
+    assert c.parse_version("not-a-version") == ()
+    assert c.parse_version("") == ()
+    assert c.parse_version(None) == ()
+
+
+def test_parse_version_stops_at_first_non_numeric_component():
+    assert c.parse_version("1.2.rc1") == (1, 2)
+
+
+def test_is_newer_version_true_when_candidate_is_newer():
+    assert c.is_newer_version("1.1.0", "1.2.0") is True
+
+
+def test_is_newer_version_false_when_candidate_is_older():
+    assert c.is_newer_version("1.2.0", "1.1.0") is False
+
+
+def test_is_newer_version_false_when_equal():
+    assert c.is_newer_version("1.1.0", "1.1.0") is False
+
+
+def test_is_newer_version_equal_with_v_prefix():
+    assert c.is_newer_version("1.1.0", "v1.1.0") is False
+
+
+def test_is_newer_version_numeric_not_lexical():
+    # A lexical/string compare would say "10.0.0" < "2.0.0" ("1" < "2").
+    assert c.is_newer_version("2.0.0", "10.0.0") is True
+    assert c.is_newer_version("10.0.0", "2.0.0") is False
+
+
+def test_is_newer_version_handles_differing_length():
+    assert c.is_newer_version("1.2", "1.2.0") is False
+    assert c.is_newer_version("1.2.0", "1.2") is False
+    assert c.is_newer_version("1.2", "1.3") is True
+
+
+def test_is_newer_version_malformed_candidate_is_never_newer():
+    assert c.is_newer_version("1.1.0", "not-a-version") is False
+    assert c.is_newer_version("1.1.0", "") is False
+
+
+def test_is_newer_version_malformed_current_does_not_crash():
+    # Shouldn't raise; a valid candidate is reported as newer than "unknown".
+    assert c.is_newer_version("garbage", "1.0.0") is True
+    assert c.is_newer_version("garbage", "not-a-version-either") is False
+
+
+class _FakeHTTPResponse:
+    def __init__(self, data: bytes):
+        self._data = data
+
+    def read(self):
+        return self._data
+
+    def __enter__(self):
+        return self
+
+    def __exit__(self, *exc):
+        return False
+
+
+def test_fetch_latest_release_ok(monkeypatch):
+    payload = json.dumps(
+        {
+            "tag_name": "v1.2.0",
+            "html_url": "https://git.avezzano.io/the_og/better-claude-config/releases/tag/v1.2.0",
+        }
+    ).encode("utf-8")
+    monkeypatch.setattr(
+        urllib.request, "urlopen", lambda req, timeout=None: _FakeHTTPResponse(payload)
+    )
+    result = c.fetch_latest_release()
+    assert result == {
+        "version": "v1.2.0",
+        "url": "https://git.avezzano.io/the_og/better-claude-config/releases/tag/v1.2.0",
+    }
+
+
+def test_fetch_latest_release_falls_back_to_releases_url_when_no_html_url(monkeypatch):
+    payload = json.dumps({"tag_name": "v1.2.0"}).encode("utf-8")
+    monkeypatch.setattr(
+        urllib.request, "urlopen", lambda req, timeout=None: _FakeHTTPResponse(payload)
+    )
+    result = c.fetch_latest_release()
+    assert result == {"version": "v1.2.0", "url": c.RELEASES_URL}
+
+
+def test_fetch_latest_release_network_failure_returns_none(monkeypatch):
+    def boom(req, timeout=None):
+        raise urllib.error.URLError("no network")
+
+    monkeypatch.setattr(urllib.request, "urlopen", boom)
+    assert c.fetch_latest_release() is None
+
+
+def test_fetch_latest_release_timeout_returns_none(monkeypatch):
+    def boom(req, timeout=None):
+        raise TimeoutError("timed out")
+
+    monkeypatch.setattr(urllib.request, "urlopen", boom)
+    assert c.fetch_latest_release() is None
+
+
+def test_fetch_latest_release_missing_tag_returns_none(monkeypatch):
+    payload = json.dumps({"html_url": "https://example.com"}).encode("utf-8")
+    monkeypatch.setattr(
+        urllib.request, "urlopen", lambda req, timeout=None: _FakeHTTPResponse(payload)
+    )
+    assert c.fetch_latest_release() is None
+
+
+def test_fetch_latest_release_malformed_json_returns_none(monkeypatch):
+    monkeypatch.setattr(
+        urllib.request, "urlopen", lambda req, timeout=None: _FakeHTTPResponse(b"not json")
+    )
+    assert c.fetch_latest_release() is None