diff --git a/pomodoro_app/packaging/arch/pomodoro-wake-daemon.py b/pomodoro_app/packaging/arch/pomodoro-wake-daemon.py
index 8f26365..3a5686d 100755
--- a/pomodoro_app/packaging/arch/pomodoro-wake-daemon.py
+++ b/pomodoro_app/packaging/arch/pomodoro-wake-daemon.py
@@ -36,6 +36,9 @@ logging.basicConfig(
 log = logging.getLogger(__name__)
 
 
+MIN_DEVICE_PARTS = 2
+
+
 def is_app_running() -> bool:
     """Check whether the Pomodoro app is running locally."""
     pgrep = shutil.which("pgrep")
@@ -88,7 +91,7 @@ def get_adb_devices() -> list[str]:
     devices: list[str] = []
     for line in result.stdout.strip().splitlines()[1:]:
         parts = line.split()
-        if len(parts) >= 2 and parts[1] == "device":  # noqa: PLR2004
+        if len(parts) >= MIN_DEVICE_PARTS and parts[1] == "device":
             devices.append(parts[0])
     return devices
 
diff --git a/python_pkg/download_cats/http_status_anki.py b/python_pkg/download_cats/http_status_anki.py
index 07a27b5..0e59b36 100755
--- a/python_pkg/download_cats/http_status_anki.py
+++ b/python_pkg/download_cats/http_status_anki.py
@@ -13,6 +13,7 @@ import hashlib
 import logging
 from pathlib import Path
 import sys
+import tempfile
 from typing import TYPE_CHECKING
 
 import genanki
@@ -357,7 +358,7 @@ class _DeckBuilder:
         filename = f"http_cat_{status_code}.jpg"
 
         # Save to temp directory for genanki
-        temp_path = Path(f"/tmp/{filename}")  # noqa: S108
+        temp_path = Path(tempfile.gettempdir()) / filename
         temp_path.write_bytes(image_data)
         self.media_files.append(str(temp_path))
 
diff --git a/python_pkg/music_gen/music_generator.py b/python_pkg/music_gen/music_generator.py
index 3bcb84c..34ad8ec 100755
--- a/python_pkg/music_gen/music_generator.py
+++ b/python_pkg/music_gen/music_generator.py
@@ -39,28 +39,21 @@ def check_dependencies(*, include_bark: bool = False) -> bool:
     Args:
         include_bark: Whether to check for Bark dependencies as well.
     """
+    import importlib.util
+
     missing = []
 
-    try:
-        import torch  # noqa: F401
-    except ImportError:
+    if importlib.util.find_spec("torch") is None:
         missing.append("torch")
 
-    try:
-        import transformers  # noqa: F401
-    except ImportError:
+    if importlib.util.find_spec("transformers") is None:
         missing.append("transformers")
 
-    try:
-        import scipy  # noqa: F401
-    except ImportError:
+    if importlib.util.find_spec("scipy") is None:
         missing.append("scipy")
 
-    if include_bark:
-        try:
-            from bark import generate_audio as _bark_gen  # noqa: F401
-        except ImportError:
-            missing.append("git+https://github.com/suno-ai/bark.git")
+    if include_bark and importlib.util.find_spec("bark") is None:
+        missing.append("git+https://github.com/suno-ai/bark.git")
 
     if missing:
         print("Missing dependencies. Install with:")
diff --git a/python_pkg/repo_explorer/repo_explorer.py b/python_pkg/repo_explorer/repo_explorer.py
index c98e0d2..9f0a2b3 100755
--- a/python_pkg/repo_explorer/repo_explorer.py
+++ b/python_pkg/repo_explorer/repo_explorer.py
@@ -469,7 +469,7 @@ class RepoExplorer(tk.Tk):
         fcntl.fcntl(master_fd, fcntl.F_SETFL, fl | os.O_NONBLOCK)
 
         self._proc = subprocess.Popen(
-            ["bash", "run.sh", *extra],  # noqa: S607
+            ["/usr/bin/bash", "run.sh", *extra],
             cwd=path,
             stdin=slave_fd,
             stdout=slave_fd,
@@ -485,7 +485,27 @@ class RepoExplorer(tk.Tk):
         threading.Thread(target=self._read_pty, daemon=True).start()
         threading.Thread(target=self._wait_proc, daemon=True).start()
 
-    def _read_pty(self) -> None:  # noqa: C901, PLR0912
+    @staticmethod
+    def _decode_buf(buf: bytes) -> str:
+        """Decode a byte buffer, strip ANSI codes and carriage returns."""
+        return _strip_ansi(buf.decode("utf-8", errors="replace").replace("\r", ""))
+
+    def _flush_partial_buf(self, buf: bytes) -> None:
+        """Flush a partial (no trailing newline) buffer to output."""
+        text = self._decode_buf(buf)
+        if text:
+            self._write_output(text)
+
+    def _process_complete_lines(self, buf: bytes) -> bytes:
+        """Split buf on newlines, output complete lines, return remainder."""
+        while b"\n" in buf:
+            line, buf = buf.split(b"\n", 1)
+            text = self._decode_buf(line)
+            if text:
+                self._write_output(text + "\n")
+        return buf
+
+    def _read_pty(self) -> None:
         """Stream PTY output to the widget, stripping ANSI codes.
 
         Partial lines (prompts without a trailing newline) are flushed after
@@ -503,11 +523,7 @@ class RepoExplorer(tk.Tk):
                 if buf:
                     idle_ticks += 1
                     if idle_ticks >= self._IDLE_FLUSH_TICKS:
-                        text = _strip_ansi(
-                            buf.decode("utf-8", errors="replace").replace("\r", "")
-                        )
-                        if text:
-                            self._write_output(text)
+                        self._flush_partial_buf(buf)
                         buf = b""
                         idle_ticks = 0
                 continue
@@ -519,18 +535,10 @@ class RepoExplorer(tk.Tk):
             if not chunk:
                 break
             buf += chunk
-            while b"\n" in buf:
-                line, buf = buf.split(b"\n", 1)
-                text = _strip_ansi(
-                    line.decode("utf-8", errors="replace").replace("\r", "")
-                )
-                if text:
-                    self._write_output(text + "\n")
+            buf = self._process_complete_lines(buf)
         # flush remainder
         if buf:
-            text = _strip_ansi(buf.decode("utf-8", errors="replace").replace("\r", ""))
-            if text:
-                self._write_output(text)
+            self._flush_partial_buf(buf)
         if self._master_fd is not None:
             with contextlib.suppress(OSError):
                 os.close(self._master_fd)