refactor(scripts): reorganize scripts/ into seed/ and validate/ subfolders

Move 9 init/seed scripts into scripts/seed/ and 7 validation scripts
(+ validators/ subfolder) into scripts/validate/ to reduce clutter in
the root scripts/ directory. Update all references across Makefile,
CI/CD configs, pre-commit hooks, docs (~40 files), and Python imports.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

docs/development/code-quality-dashboard-implementation.md

@@ -8,7 +8,7 @@ This document tracks the implementation of the Code Quality Dashboard for tracki
 
 ## Overview
 
-The Code Quality Dashboard provides a UI for viewing, managing, and tracking architecture violations detected by `scripts/validate_architecture.py`. This allows teams to:
+The Code Quality Dashboard provides a UI for viewing, managing, and tracking architecture violations detected by `scripts/validate/validate_architecture.py`. This allows teams to:
 
 - View violations in a user-friendly interface
 - Track technical debt over time
@@ -90,7 +90,7 @@ class CodeQualityService:
         Run architecture validator and store results
 
         Steps:
-        1. Execute scripts/validate_architecture.py
+        1. Execute scripts/validate/validate_architecture.py
         2. Parse JSON output
         3. Create ArchitectureScan record
         4. Create ArchitectureViolation records
@@ -216,7 +216,7 @@ def run_scan(db: Session, triggered_by: str = 'manual') -> ArchitectureScan:
     # Run validator
     start_time = datetime.now()
     result = subprocess.run(
-        ['python', 'scripts/validate_architecture.py', '--json'],
+        ['python', 'scripts/validate/validate_architecture.py', '--json'],
         capture_output=True,
         text=True
     )
@@ -563,7 +563,7 @@ function codeQualityDashboard() {
 
 ## Validator Output Format
 
-**Update:** `scripts/validate_architecture.py`
+**Update:** `scripts/validate/validate_architecture.py`
 
 Add JSON output support: