chore(standards): all 17 branches to 100% — Windows-compat sweep + checker getattr fix

Windows-compat hardening across every branch to reach 100% on the seedgo
standards audit:
- UTF-8 stdout/stderr reconfigure guards (getattr form) on Rich/CLI entry points
- platform-branched POSIX-only subprocess kwargs (start_new_session ->
  CREATE_NEW_PROCESS_GROUP on win32)
- seedgo windows_compat checker: credit the getattr reconfigure form + locking test
- commons: shared-init test-suite speedup
- spawn: aipass_framework template — strip pytest.ini inline comments + add scaffold smoke test
- includes in-progress cross-OS testing work (doctor/init_flow/cross_os handlers + tests)

Verified: full audit 17/17 at 100%, pyright clean.

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_013uzDhtcZ6wT1T9e2AHPQig

src/aipass/devpulse/apps/devpulse.py

@@ -15,11 +15,25 @@ Auto-discovery architecture:
 - No manual imports or routing needed
 """
 
+import os
 import sys
 import importlib
 from pathlib import Path
 from typing import Any
 
+# Windows terminals/pipes default to cp1252, which can't encode the Unicode
+# Rich emits (✓/✗, box-drawing, arrows). PYTHONUTF8 only affects child
+# interpreters, not this process's already-open stdout/stderr — so we also
+# reconfigure the live streams to UTF-8 in place (Python 3.7+). Without this,
+# the introspection/help banners crash with UnicodeEncodeError on Windows.
+# Mirrors aipass/apps/aipass.py and drone/cli.py.
+if sys.platform == "win32":
+    os.environ.setdefault("PYTHONUTF8", "1")  # for child subprocesses
+    for _stream in (sys.stdout, sys.stderr):
+        _reconfigure = getattr(_stream, "reconfigure", None)
+        if _reconfigure is not None:
+            _reconfigure(encoding="utf-8", errors="replace")
+
 from aipass.prax import logger
 from aipass.cli.apps.modules import err_console