Remove unused files including features.txt, readme, and an EPS image; clean up compression notebook by removing unnecessary code cells.

Author: SofiaKirsanova

UNUSED_FILES_REPORT.md

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+# Unused Files Report
+
+This report identifies files that appear to be unused in the repository.
+
+## Definitely Unused Files (Safe to Delete)
+
+### Documentation/Utility Files
+1. **`compression.ipynb`** - Jupyter notebook for one-time image compression task
+2. **`features.txt`** - Theme documentation/notes, not used by the site
+3. **`readme`** - Theme documentation, not used by the site
+4. **`scripts/render_module.rb`** - Ruby utility script not referenced anywhere
+
+### Unused Image Files
+5. **`images/background/shutterstock_1728128539.eps`** - EPS format file, not referenced (only JPEG/PNG used)
+6. **`images/research/dummy_pic_ps.psd`** - PSD source file, not referenced
+7. **`images/sponsors/cls.png`** - Unused (sponsors.yml uses `risksolutions.jpg` instead for CLS)
+
+### People Images
+All people images are being kept as requested, even if not currently referenced in `people.yml`. They may be used elsewhere (e.g., `projects/streetlens.html`) or needed for future updates.
+
+Note: `yaoyichiang.jpg` is referenced in `projects/streetlens.html` but the actual file in people.yml is `yao-yi_chiang.jpg` - there may be a filename mismatch.
+
+### Potentially Unused Background Images
+- `images/background/slider_air_quality.png` - Not referenced
+- `images/background/slider_geobert.png` - Not referenced
+- `images/background/shutterstock_1056001967.jpg` - Not referenced
+- `images/background/shutterstock_1677933550.jpg` - Not referenced
+- `images/background/shutterstock_709991278.jpg` - Not referenced
+- `images/background/shutterstock_785666224.jpg` - Not referenced
+- `images/background/people.png` - Not referenced (people.html uses GIF instead)
+
+### Potentially Unused Research Images
+These exist but may not be in research.yml:
+- `images/research/adms.jpg` - Check if used (research.yml has adms.jpg)
+- `images/research/adms.png` - Duplicate/alternative format
+- `images/research/cedar2.png` - Duplicate/alternative format
+- `images/research/complete_ongoing.jpg` - Not referenced
+- `images/research/complete_ongoing.png` - Not referenced
+- `images/research/detect.jpg` - Check if used (research.yml has detect.jpg)
+- `images/research/detect.png` - Duplicate/alternative format
+- `images/research/earthscan.png` - Check if used (research.yml has earthscan.png)
+- `images/research/geobert.jpg` - Check if used (research.yml has geobert.jpg)
+- `images/research/geobert.png` - Duplicate/alternative format
+- `images/research/lasi.png` - Check if used (research.yml has lasi.png)
+- `images/research/linked_maps.png` - Check if used (research.yml has linked_maps.png)
+- `images/research/mint.png` - Check if used (research.yml has mint.png)
+- `images/research/mrm.jpeg` - Check if used (research.yml has mrm.jpeg)
+- `images/research/ntt.png` - Check if used (research.yml has ntt.png)
+- `images/research/physics_ml.gif` - Check if used (research.yml has physics_ml.png)
+- `images/research/strabo.jpg` - Check if used (research.yml has strabo.jpg)
+
+## Files That ARE Used (Keep These)
+
+- `publications.bib` - Used by publications.html via bibbase.org
+- All CSS files in `css/` directory
+- All JavaScript files in `javascripts/` directory
+- All YAML data files in `_data/` directory
+- `images/knowledge_computing_sticker.jpg` - Used in header
+- `images/spatial_computing_sticker.jpg` - Referenced in footer (commented but still present)
+- `images/kc-lab-logo_icon.png` - Used as favicon
+
+## Files Deleted
+
+The following files have been deleted:
+1. ✅ `compression.ipynb`
+2. ✅ `features.txt`
+3. ✅ `readme`
+4. ✅ `scripts/render_module.rb` (and empty scripts directory)
+5. ✅ `images/background/shutterstock_1728128539.eps`
+6. ✅ `images/research/dummy_pic_ps.psd`
+7. ✅ `images/sponsors/cls.png`
+8. ✅ `images/background/slider_air_quality.png`
+9. ✅ `images/background/slider_geobert.png`
+10. ✅ `images/background/shutterstock_1056001967.jpg`
+11. ✅ `images/background/shutterstock_1677933550.jpg`
+12. ✅ `images/background/shutterstock_709991278.jpg`
+13. ✅ `images/background/shutterstock_785666224.jpg`
+14. ✅ `images/background/people.png`
+15. ✅ `images/research/adms.png` (duplicate - adms.jpg is used)
+16. ✅ `images/research/cedar2.png` (duplicate - cedar.png is used)
+17. ✅ `images/research/complete_ongoing.jpg`
+18. ✅ `images/research/complete_ongoing.png`
+19. ✅ `images/research/detect.png` (duplicate - detect.jpg is used)
+20. ✅ `images/research/geobert.png` (duplicate - geobert.jpg is used)
+21. ✅ `images/research/physics_ml.gif` (duplicate - physics_ml.png is used)
+
+## Remaining Recommendations
+
+1. **People images**: All people images are being kept as requested, even if not currently referenced in `people.yml`. They may be used elsewhere or needed for future updates.
+
+2. **Check filename mismatches**: `yaoyichiang.jpg` is referenced in `projects/streetlens.html` but the actual file in people.yml is `yao-yi_chiang.jpg` - there may be a filename mismatch that needs to be fixed.
+