fix: resolve ruff SIM103/SIM105/I001/E501/format violations for v0.11.7 CI

- cli.py: replace try-except-pass with contextlib.suppress (SIM105); reformat
- updater.py: collapse if/return True/return False to return bool(...) (SIM103);
  add blank line between third-party/first-party imports in check_project_version (I001);
  wrap 101-char return string in run_migration (E501)

Co-Authored-By: Oz <oz-agent@warp.dev>

Author: tbitcs

src/specsmith/cli.py

@@ -105,6 +105,7 @@ def invoke(self, ctx: click.Context) -> object:
         # the escape hatch SPECSMITH_ALLOW_NON_PIPX=1 is set (CI / dev only).
         if not os.environ.get("SPECSMITH_ALLOW_NON_PIPX"):
             from specsmith.updater import is_pipx_install
+
             if not is_pipx_install():
                 click.echo(
                     "ERROR: specsmith must be installed and run via pipx only.\n"
@@ -241,10 +242,8 @@ def _maybe_notify_pypi_update() -> None:
         # Read persisted last-check time (best-effort).
         last_check = 0.0
         if stamp_file.is_file():
-            try:
+            with contextlib.suppress(ValueError, OSError):
                 last_check = float(stamp_file.read_text(encoding="utf-8").strip())
-            except (ValueError, OSError):
-                pass
 
         # Not due yet — skip entirely (no network call).
         if now - last_check < interval_s:

src/specsmith/updater.py

@@ -91,10 +91,7 @@ def is_pipx_install() -> bool:
 
     # 4. Linux/macOS default: ~/.local/pipx/venvs/<pkg>/bin/python
     unix_pipx = (Path.home() / ".local" / "pipx" / "venvs").as_posix().lower()
-    if exe.startswith(unix_pipx):
-        return True
-
-    return False
+    return bool(exe.startswith(unix_pipx))
 
 
 def run_self_update(
@@ -147,6 +144,7 @@ def check_project_version(root: Path) -> tuple[str, str]:
     Returns (project_version, installed_version).
     """
     import yaml
+
     from specsmith.paths import find_scaffold
 
     scaffold_path = find_scaffold(root)
@@ -180,7 +178,9 @@ def run_migration(root: Path, *, dry_run: bool = False) -> list[str]:
 
     scaffold_path = find_scaffold(root)
     if scaffold_path is None:
-        return ["No scaffold config found (docs/SPECSMITH.yml or scaffold.yml) — nothing to migrate"]
+        return [
+            "No scaffold config found (docs/SPECSMITH.yml or scaffold.yml) — nothing to migrate"
+        ]
 
     with open(scaffold_path) as f:
         raw = yaml.safe_load(f) or {}