[codex] simplify compact notifications and margin labels

[Pigbibi]

Summary

• Simplify Telegram compact notifications to account/positions/trade outcome only.
• Fix margin-enabled dashboard wording so buying power is not described as cash-only assets.
• Bump UsEquityStrategies pin to the merged dashboard fix.

Test Plan

• See repository-specific pytest commands in the PR checks and local validation.

[chatgpt-codex-connector]

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[chatgpt-codex-connector]

Exclude remaining audit rows from compact dashboards

When dashboard_text contains strategy audit rows that do not start with these prefixes—for example TQQQ dashboard rows like QQQ: ... | MA200 Exit: ... or Vol Delever: ...—_compact_dashboard_lines() keeps them, so compact trade/heartbeat Telegram messages still include benchmark and risk diagnostics instead of only account/position/outcome information. Please either positively allow the account/holding/cash rows or add the remaining audit prefixes before using this helper for compact notifications.

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