feat(gowlers-tracking-ledger): add separate date started and date finished columns

- Split 'Date' column into 'Date Started' (dateCreated) and 'Date Finished' (dateUpdated)
- 'Date Finished' shows when encounter status changed to 'finished'
- Provides better visibility into encounter duration
- Update version to 0.1.11

Encounters tab now clearly shows when each encounter started and when it ended.

🤖 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": "0.1.10",
+  "version": "0.1.11",
   "authors": [
     { "name": "Gowler", "url": "https://foundryvtt.com" }
   ],