Add odds trajectory + snapshot charts (market vs polls, total bet volume preserved)

README.md

@@ -34,6 +34,10 @@ Maintained by **[AFOS Analytics](https://afos-analytics.com)**. Part of AFOS's e
 
 ## English
 
+![Polymarket implied probability of winning over the campaign](odds-trajectory.png)
+
+![Market probability of winning versus poll vote share on the eve of the vote](odds-snapshot.png)
+
 | Path | Rows | Content |
 |------|------|---------|
 | `polls/colombia-first-round-polls.csv` | 170 | First-round voting intention, **long format** (one row per candidate × poll), **10 candidates**, 29 polls, 2025→May 2026. |