feat: reliability enhancements for AI services and capital planning

1. Health Scores — separate operating/reserve refresh
   - Added POST /health-scores/calculate/operating and /calculate/reserve
   - Each health card now has its own Refresh button
   - On failure, shows cached (last good) data with "last analysis failed"
     watermark instead of blank "Error calculating score"
   - Backend getLatestScores returns latest complete score + failure flag

2. Investment Planning — increased AI timeout to 5 minutes
   - Backend callAI timeout: 180s → 300s
   - Frontend axios timeout: set explicitly to 300s (was browser default)
   - Host nginx proxy_read_timeout: 180s → 300s
   - Loading message updated to reflect longer wait times

3. Capital Planning — Unscheduled column moved to rightmost position
   - Kanban column order: current year → future → unscheduled (was leftmost)
   - Puts immediate/near-term projects front and center

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

backend/src/modules/investment-planning/investment-planning.service.ts

@@ -873,7 +873,7 @@ Based on this complete financial picture INCLUDING the 12-month cash flow foreca
             'Content-Type': 'application/json',
             'Content-Length': Buffer.byteLength(bodyString, 'utf-8'),
           },
-          timeout: 180000, // 3 minute timeout
+          timeout: 300000, // 5 minute timeout
         };
 
         const req = https.request(options, (res) => {
@@ -887,7 +887,7 @@ Based on this complete financial picture INCLUDING the 12-month cash flow foreca
         req.on('error', (err) => reject(err));
         req.on('timeout', () => {
           req.destroy();
-          reject(new Error(`Request timed out after 180s`));
+          reject(new Error(`Request timed out after 300s`));
         });
 
         req.write(bodyString);