Merge: Incorporate Session 2 statistics panel feature

JOURNAL.md

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-# Cosmic Garden - Development Journal
-
-This file tracks all development progress for the Cosmic Garden idle game.
-
-## Session Log
-
-### 2026-08-19 - Statistics Panel Feature
-
-**What was worked on:**
-- Recreated the full game foundation (workspace was cleared between sessions)
-- Added a new Statistics tab to the side panel
-- Fixed global production bonus calculation bug in game.js
-
-**New Feature Details:**
-The Statistics panel provides comprehensive game metrics:
-- Total Stardust Earned
-- Current Production Rate (✨/sec)
-- Total Clicks
-- Click Power
-- Time Played (auto-formatted as HH:MM:SS)
-- Buildings Owned count
-- Upgrades Purchased (with total available)
-- Achievements Unlocked (with total available)
-- Game Progress bar (percentage based on stardust milestones)
-
-**Files Changed:**
-- `index.html` - Added Stats tab UI
-- `js/stats.js` - New statistics tracking module
-- `js/game.js` - Fixed global bonus calculation
-- `css/game.css` - Added stats panel styling
-
-**Testing:**
-- Verified stats update correctly during gameplay
-- Confirmed time formatting works properly
-- Checked progress bar calculation
-
-**Next Session Goals:**
-- Add particle effects on click
-- Implement mobile touch optimizations
-- Consider adding prestige system
-
----
-
-*Last updated: 2026-08-19*