Archive terminal Codex threads from backlog

[yvette-carlisle]

Summary

• add a project-level terminal Codex thread archive reconciler
• scan terminal run attempts with thread ids and no successful thread/archive event
• wire the reconciler into issue-run completion, daemon ticks, closeout tail, and idle non-dry-run cycles
• add SQLite-backed project attempt/event lookup and regression coverage
• satisfy the CI Rust vstyle spacing gate

Root Cause

The existing archive call only covered specific successful app-server closeout paths. Terminal attempts produced by daemon/reconciliation/retained closeout paths could remain unarchived even though the run was no longer active.

Validation

• vstyle curate --language rust --workspace --all-features
• cargo make check-rust
• cargo make fmt-check
• cargo make test
• git diff --check