The thinking-mode sanitizer now sums the byte size of every replayed
`reasoning_content` field in the outgoing chat-completions body and
emits an `info`-level log line:
Reasoning-content replay: 7 assistant message(s), ~3.2K input tokens (12,884 chars) being re-sent in this request
This is visible under `RUST_LOG=deepseek_tui=info` (or higher). It's the
first step toward the footer/status-line indicator described in #30 —
the model's input-side reasoning replay is now observable per turn,
even before it gets a dedicated UI surface.
Tests cover both branches: bodies that already have reasoning_content
(count is summed across all assistant turns) and bodies where the
sanitizer had to inject the `(reasoning omitted)` placeholder (the
placeholder bytes are included in the count since they ship over the
wire).
Footer integration deferred — that needs a new event from client → engine
→ TUI to surface the count alongside `cache N%` / `$X.XX`. Part of #30
remains open.
Hunter Bown
017ac97d0d