fix: reconcile Longbridge order outcomes

[Pigbibi]

Summary

• report Longbridge submitted or accepted orders as pending reconciliation instead of completed executions
• preserve broker submission markers for deduplication while making runtime reports and Telegram cycle summaries explicit about pending confirmation
• propagate strategy small-account diagnostics and block new buys or top-ups below the recommended equity while retaining strategy-driven sells

Validation

• 105 targeted tests passed
• ruff check passed on changed files