Add thematic C++ code counting script and report (16.01.2026)

CODE_COUNT_REPORT_20260116.md

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+# ThemisDB Code Count Report
+## Date: 16.01.2026 19:11:37
+
+This report provides a thematic count of C++ code in ThemisDB.
+
+## 1. Source Code by Theme (`./src`)
+
+| Theme | Files | Lines |
+|-------|-------|-------|
+| [root] | 4 | 2,371 |
+| acceleration | 16 | 5,566 |
+| analytics | 6 | 5,212 |
+| api | 3 | 1,408 |
+| aql | 2 | 801 |
+| auth | 2 | 722 |
+| base | 1 | 419 |
+| cache | 2 | 600 |
+| cdc | 2 | 715 |
+| content | 20 | 10,374 |
+| exporters | 1 | 657 |
+| geo | 3 | 252 |
+| governance | 1 | 185 |
+| gpu | 1 | 170 |
+| importers | 1 | 414 |
+| index | 15 | 14,513 |
+| llm | 83 | 37,777 |
+| metadata | 1 | 680 |
+| network | 1 | 340 |
+| observability | 1 | 295 |
+| performance | 12 | 1,964 |
+| plugins | 3 | 1,020 |
+| query | 16 | 11,331 |
+| replication | 1 | 748 |
+| scheduler | 2 | 1,511 |
+| search | 1 | 251 |
+| security | 18 | 7,205 |
+| server | 62 | 35,140 |
+| sharding | 42 | 15,642 |
+| storage | 13 | 5,899 |
+| temporal | 1 | 234 |
+| timeseries | 11 | 2,774 |
+| transaction | 3 | 1,020 |
+| updates | 4 | 1,539 |
+| utils | 28 | 8,316 |
+| voice | 2 | 738 |
+| **TOTAL** | **385** | **178,803** |
+
+## 2. Headers by Theme (`./include`)
+
+| Theme | Files | Lines |
+|-------|-------|-------|
+| [root] | 1 | 262 |
+| acceleration | 8 | 1,165 |
+| analytics | 7 | 3,323 |
+| api | 2 | 475 |
+| aql | 2 | 332 |
+| auth | 2 | 284 |
+| cache | 7 | 380 |
+| cdc | 2 | 372 |
+| content | 20 | 3,301 |
+| document | 2 | 306 |
+| exporters | 2 | 287 |
+| geo | 2 | 72 |
+| governance | 1 | 74 |
+| importers | 2 | 250 |
+| index | 17 | 4,348 |
+| llm | 110 | 22,448 |
+| metadata | 1 | 233 |
+| network | 1 | 279 |
+| observability | 1 | 135 |
+| performance | 19 | 2,995 |
+| plugins | 5 | 1,763 |
+| projects | 1 | 221 |
+| query | 35 | 20,935 |
+| replication | 2 | 891 |
+| scheduler | 2 | 546 |
+| search | 1 | 120 |
+| security | 18 | 3,097 |
+| server | 63 | 8,512 |
+| sharding | 44 | 9,803 |
+| storage | 11 | 2,399 |
+| temporal | 1 | 124 |
+| themis | 6 | 1,027 |
+| timeseries | 10 | 1,324 |
+| transaction | 3 | 510 |
+| updates | 4 | 567 |
+| utils | 31 | 3,515 |
+| voice | 1 | 235 |
+| **TOTAL** | **447** | **96,910** |
+
+## 3. Themis-Specific Headers (`./include/themis`)
+
+| Component | Files | Lines |
+|-----------|-------|-------|
+| [themis-root] | 3 | 378 |
+| base | 2 | 427 |
+| network | 1 | 222 |
+| **TOTAL** | **6** | **1,027** |
+
+## 4. Tools (`./tools`)
+
+- **Files**: 12
+- **Lines**: 864
+
+## 5. Examples (`./examples`)
+
+- **Files**: 20
+- **Lines**: 4,566
+
+## 6. Tests (`./tests`)
+
+- **Files**: 353
+- **Lines**: 106,016
+
+## 7. Benchmarks (`./benchmarks`)
+
+- **Files**: 86
+- **Lines**: 28,477
+
+## 8. Scripts (`./scripts`)
+
+- **Files**: 0
+- **Lines**: 0
+
+## 9. Grand Total
+
+| Category | Files | Lines |
+|----------|-------|-------|
+| Source (`./src`) | 385 | 178,803 |
+| Headers (`./include`) | 447 | 96,910 |
+| Tools | 12 | 864 |
+| Examples | 20 | 4,566 |
+| Tests | 353 | 106,016 |
+| Benchmarks | 86 | 28,477 |
+| Scripts | 0 | 0 |
+| **GRAND TOTAL** | **1303** | **415,636** |
+
+## 10. Statistics
+
+- **Average lines per file**: 319.0
+- **Themis-specific files in include**: 6 files, 1,027 lines
+
+---
+*Report generated automatically for issue #581*