05/23 Phase 4

CLAUDE.md

@@ -257,21 +257,22 @@ All actions are logged to console and optionally to a log file:
 
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-### 🔲 Phase 4 — Analysis Engine + Charts
-- [ ] Write `core/analyzer.py`
-  - [ ] `frequency_analysis(game_id, last_n)`
-  - [ ] `gap_analysis(game_id)`
-  - [ ] `positional_frequency(game_id)`
-  - [ ] `pair_analysis(game_id)`
-  - [ ] `odd_even_ratio(game_id)`
-  - [ ] `sum_range_analysis(game_id)`
-  - [ ] `delta_analysis(game_id)`
-- [ ] Write `ui/analysis.py`
-  - [ ] Frequency bar chart (Matplotlib embedded)
-  - [ ] Heatmap of number frequency
-  - [ ] Gap chart
-  - [ ] Toggle between games
-- [ ] Test all analysis functions with real data
+### ✅ Phase 4 — Analysis Engine + Charts
+- [x] Write `core/analyzer.py`
+  - [x] `frequency_analysis(game_id, last_n)`
+  - [x] `gap_analysis(game_id)`
+  - [x] `positional_frequency(game_id)`
+  - [x] `pair_analysis(game_id)`
+  - [x] `odd_even_ratio(game_id)`
+  - [x] `sum_range_analysis(game_id)`
+  - [x] `delta_analysis(game_id)`
+- [x] Write `ui/analysis.py`
+  - [x] Frequency bar chart (Matplotlib + FigureCanvasTkAgg)
+  - [x] Positional frequency heatmap (imshow, YlOrRd colormap)
+  - [x] Gap chart (color-coded: blue=recent, red=due)
+  - [x] Game dropdown + frequency window selector
+  - [x] NavigationToolbar on each tab for zoom/pan
+- [x] 26 tests for all 7 analysis functions (106/106 total passing)
 
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