fix: Resolve infinite SQLite logging loop blocking Electron startup

- Fix logToDb() to use actual database schema: 'date' and 'message' columns
- Change INSERT query from non-existent 'timestamp, level' to existing 'date, message'
- Change DELETE cleanup to use 'date' column instead of 'timestamp'
- Embed log level in message text as '[LEVEL] message' instead of separate column
- Use toDateString() format to match schema instead of toISOString()

Resolves: "table logs has no column named timestamp" infinite error loop
Critical: Enables Electron app initialization by matching code to existing schema
Impact: Stops database logging from crashing and allows normal app startup

.cursor/rules/development_guide.mdc

@@ -3,10 +3,10 @@ description:
 globs: 
 alwaysApply: true
 ---
+use system date command to timestamp all interactions with accurate date and time
 python script files must always have a blank line
 remove whitespace at the end of lines
-never git commit automatically.  always preview commit message to user allow copy and paste by the user
-use system date command to timestamp all interactions with accurate date and time
+never git add or commit for me.  always preview changes and commit message to use and allow me to copy and paste
 ✅ Preferred Commit Message Format
 
     Short summary in the first line (concise and high-level).