Fix price table display by using closest-match dates and API fallback

The price table was not displaying because of two issues:
1. The Bitfinex API was returning 403 errors, causing the entire get10yr() function to fail
2. The code was looking for exact date matches in weekly historical data

Changes:
- Add try-catch around API call with fallback to latest historical data
- Replace exact date matching with closest-date algorithm to handle weekly data
- Table now shows 10 years of historical price data with percent changes

calculate.js

@@ -30,18 +30,40 @@ module.exports = {
 
             // get all the years you need from 1 - 10
             for (let i = 1; i < 11; i++) {
-                const y = new Date(new Date().setFullYear(new Date().getFullYear() - i)).toISOString().slice(0, 10)
-                datelist.push(y)
-            }
+                const targetDate = new Date(new Date().setFullYear(new Date().getFullYear() - i))
+                const targetDateStr = targetDate.toISOString().slice(0, 10)
+
+                // Find the closest date in historical data
+                let closestEntry = null
+                let minDiff = Infinity
+
                 for (let j = 0; j < historical.length; j++) {
-                const hdate = historical[j]['date']
-                if (datelist.includes(hdate)) {
-                    hist_entries.push(historical[j])
+                    const entryDate = new Date(historical[j]['date'])
+                    const diff = Math.abs(entryDate - targetDate)
+
+                    if (diff < minDiff) {
+                        minDiff = diff
+                        closestEntry = historical[j]
+                    }
+                }
+
+                if (closestEntry) {
+                    hist_entries.push(closestEntry)
                 }
             }
             //  console.log(hist_entries)
             let final_list = []
-            let today_sats = await this.bfx()
+
+            // Try to get current price from API, fallback to latest historical data if API fails
+            let today_sats
+            try {
+                today_sats = await this.bfx()
+            } catch (apiError) {
+                console.log("API failed, using latest historical data as fallback")
+                // Use the most recent entry in historical data as today's price
+                today_sats = historical[historical.length - 1]['sateur_rate']
+            }
+
             for (var v = 0; v < hist_entries.length; v++) {
                 const date = new Date(hist_entries[v]['date'])
                 year = date.getFullYear();