feat(gowlers-tracking-ledger): implement tab switching with global handler function

- Add window.switchHistoryTab() global function to handle tab switching via onclick
- Function manages active tab state by toggling CSS classes and display properties
- Includes detailed console logging for debugging tab switches
- Update version to 0.1.6

Fixes tab switching functionality in the history dialog where buttons were not responding to clicks.

🤖 Generated with Claude Code

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

src/macros_new/gowlers-tracking-ledger/module.json

@@ -3,7 +3,7 @@
   "type": "module",
   "title": "Gowler's Tracking Ledger",
   "description": "Adds HP/XP/Currency log buttons to PF1 sheets and opens the tracking dialog preloaded with the actor's logs.",
-  "version": "0.1.3",
+  "version": "0.1.6",
   "authors": [
     { "name": "Gowler", "url": "https://foundryvtt.com" }
   ],