feat(loop): codify external intrinsic loop management, progressive remediation, and operational runbook

- Add bin/gravity.py loop diagnostics, reconstruction, and progressive remediation
- Wire hard-break alerting to job-log audit and operator direct message
- Add comprehensive architecture and operational specification in docs/LOOP-MANAGEMENT.md
- Add sidechat thread auto-provisioning fallback on 'Navigated to: None' in bin/dm.py
- Support Muse unconfirmed signup error handling in bin/muse-signin.py
- Track dynamic pipe sidechat mappings in job-sidechats.json

bin/muse-signin.py

@@ -126,8 +126,13 @@ def main():
     time.sleep(4)
 
     # Step 5: Check for OTP prompt
-    body = ev(ws, "document.body.innerText.slice(0,300)")
-    if "Enter your code" in body or "code we sent" in body:
+    body = ev(ws, "document.body.innerText.slice(0,400)")
+    if "To confirm your account" in body:
+        print(f"NEEDS_SIGNUP: Account not yet confirmed/created on Muse for {args.email}. Client must complete signup first at https://muse.ai", file=sys.stderr)
+        ws.close()
+        sys.exit(4)
+
+    if "Enter your code" in body or "code we sent" in body or "To log in" in body:
         print(f"OTP prompt detected for {args.email}")
         if not args.otp:
             print(f"APPROVAL_NEEDED: OTP required for {args.email}")