Reorganize documentation: create separate reports for each decimal level

- Create reports/ directory with detailed performance reports
- Simplify README.md to provide overview and summary
- Add links to detailed reports for each decimal level (1, 2, 5, 10, 100, 1000, 2000)
- Keep summary table and key findings in main README
- Remove verbose charts from main README to reduce noise

reports/100_decimals.md

@@ -0,0 +1,52 @@
+# Performance Report: 100 Decimals
+
+## Test Environment
+
+**Hardware:**
+- **Model:** MacBook Neo (Mac17,5)
+- **Processor:** Apple A18 Pro (6 cores: 2 performance + 4 efficiency)
+- **Memory:** 8 GB RAM
+- **Operating System:** macOS (Darwin)
+
+## Performance Charts
+
+| Language | Time (ms) | Memory (MB) | Status |
+|----------|-----------|-------------|--------|
+| Assembly | 9 | 0 | ✓ |
+| C | 9 | 0 | ✓ |
+| C++ | 9 | 0 | ✓ |
+| Rust | 9 | 0 | ✓ |
+| Go | 9 | 0 | ✓ |
+| Nim | 9 | 0 | ✓ |
+| Odin | 9 | 0 | ✓ |
+| Swift | 29 | 0 | ✓ |
+| Fortran | 27 | 0 | ✓ |
+| Objective-C | 31 | 752 | ✓ |
+| D | 35 | 10154 | ✓ |
+| Crystal | 28 | 0 | ✓ |
+| Zig | 33 | 2730 | ✓ |
+| Haskell | 9 | 0 | ✓ |
+| Lua | 29 | 0 | ✓ |
+| Python | 57 | 2000 | ✓ |
+| Java | 57 | 2000 | ✓ |
+| C# | 57 | 2016 | ✓ |
+| JavaScript | 84 | 2032 | ✓ |
+| TypeScript | 154 | 2032 | ✓ |
+| Perl | 55 | 2000 | ✓ |
+| PHP | 77 | 2032 | ✓ |
+| Ruby | 79 | 2000 | ✓ |
+| Julia | 290 | 2032 | ✓ |
+| Elixir | 898 | 2037 | ✓ |
+| Erlang | 130 | 2037 | ✓ |
+| R | 349 | 2032 | ✓ |
+| Scala | 58 | 2000 | ✓ |
+| Kotlin | 83 | 2032 | ✓ |
+| Dart | 31 | 11749 | ✓ |
+| Bash | 32 | 2000 | ✓ |
+| Brainfuck | 54 | 2005 | ✓ |
+
+
+
+---
+
+*Generated from Pi Calculation Benchmark - 100 decimals precision*