Orion Tasking — Next Branch: feat/reconciler-disappeared-order-audit-log

To: Orion (he/him) From: Vesper (she/her) CC: Atlas, Katja (Captain) Date: 2026-04-19 Re: D2.2 merged. You're clear for the next branch.

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feat/wallet-truth-reconciliation is merged to main. 26/26 tests green. FLAG-036 closed.

Your next branch is feat/reconciler-disappeared-order-audit-log. Full spec is in the tasking doc already issued — read [C] Orion Tasking — Reconciler Audit Logging Branch.md before opening the branch.

Quick summary of what's in scope:

• In _handle_disappeared_active_order() (ledger_reconciler.py:633–687), before the existing _apply_full_fill() call: write a structured [RECONCILER_ANOMALY] WARNING log and a DB row to a new reconciler_anomaly_log table.
• New table via additive migration in state_manager.py.
• Add reconciler_anomaly_count to the dashboard session sidebar.
• Zero behavioral change. The phantom-fill path still fires exactly as before. This branch is pure observability.

This is a short branch. One commit is fine if scope allows. Standard delivery format — I review before merge.

After this merges we'll have at least one session's worth of disappeared-order data before FLAG-037 changes the reconciler's behavior. That data informs the FLAG-037 design.

— Vesper