refactor(docs): consolidate and cleanup documentation

- Delete 9 deprecated/obsolete docs (~6,300 lines removed)
- Move test PDFs to tests/fixtures/ocr-samples/
- Create docs/DEPLOYMENT.md as principal guide
- Create tests/ocr-validation/README.md
- Update all refs for ultrathin monolith architecture
- Update OCR tests to use relative paths

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

deployment/windows/docs/DEPLOYMENT_AUTOMATION.md

@@ -422,8 +422,8 @@ Get-Content "C:\ROA2WEB-Scripts\last-deploy.json" | ConvertFrom-Json | Format-Li
 
 ### Check Service Status (Server)
 ```powershell
-# After deployment, verify services
-Get-Service -Name "ROA2WEB-Backend", "ROA2WEB-TelegramBot"
+# After deployment, verify service
+Get-Service -Name "ROA2WEB-Backend"
 
 # Or use ROA2WEB-Console.ps1
 cd C:\inetpub\wwwroot\roa2web\scripts
@@ -669,14 +669,13 @@ Get-Content "C:\Temp\ROA2WEB-Scripts\Logs\check-and-deploy.log" -Tail 30
 ```
 
 ```powershell
-# Verify services are running:
-Get-Service -Name "ROA2WEB-Backend", "ROA2WEB-TelegramBot"
+# Verify service is running:
+Get-Service -Name "ROA2WEB-Backend"
 
 # Expected output:
 # Status   Name                   DisplayName
 # ------   ----                   -----------
 # Running  ROA2WEB-Backend        ROA2WEB Backend Service
-# Running  ROA2WEB-TelegramBot    ROA2WEB Telegram Bot Service
 ```
 
 #### Step 5: Verify Web Application