#661 exit-code foundation: @cli resolve_exit + error() auto-trip (inert) + @seedgo output_routing checker + devpulse reference adoption

- @cli: process failure-flag + resolve_exit(handled)->0/1/2; error() auto-trips the flag; inert until a branch adopts it; 10 tests, seedgo 100%
- @seedgo: new output_routing standard (39th checker) flags user-facing status output bypassing cli helpers; 254-site per-branch migration checklist; precise (0 FP, dogfooded on devpulse); 1178 tests
- devpulse: first adopter — main()->reset_command_state()+resolve_exit(); feedback module+handlers migrated raw-red/logger.error->error(); exit 2/0/1 verified; 380 tests green; seedgo 100%
- CHANGELOG updated. Fleet migration (remaining 13 branches) to follow. Tracked in DPLAN-0236.

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01HeaAmr3oj2ZexB6ng311Vj

src/aipass/devpulse/apps/devpulse.py

@@ -35,7 +35,7 @@ if sys.platform == "win32":
             _reconfigure(encoding="utf-8", errors="replace")
 
 from aipass.prax import logger
-from aipass.cli.apps.modules import err_console
+from aipass.cli.apps.modules import err_console, resolve_exit, reset_command_state
 
 console = err_console
 
@@ -161,13 +161,14 @@ def _handle_command(command: str, args: list) -> bool:
 
 def main():
     """Main entry point - routes commands or shows help."""
+    reset_command_state()
     args = sys.argv[1:]
 
     if len(args) == 0:
         print_introspection()
         return 0
 
-    return 0 if _handle_command(args[0], args[1:]) else 1
+    return resolve_exit(_handle_command(args[0], args[1:]))
 
 
 if __name__ == "__main__":