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/architecture/architecture-patterns.md

@@ -2,7 +2,7 @@
 
 This document describes the architectural patterns and design decisions that must be followed throughout the codebase.
 
-> **Note:** These patterns are enforced automatically by `scripts/validate_architecture.py`. Run the validator before committing code.
+> **Note:** These patterns are enforced automatically by `scripts/validate/validate_architecture.py`. Run the validator before committing code.
 
 ---
 
@@ -609,16 +609,16 @@ function storesManager() {
 
 ```bash
 # Validate entire codebase
-python scripts/validate_architecture.py
+python scripts/validate/validate_architecture.py
 
 # Validate specific directory
-python scripts/validate_architecture.py app/api/
+python scripts/validate/validate_architecture.py app/api/
 
 # Verbose output with context
-python scripts/validate_architecture.py --verbose
+python scripts/validate/validate_architecture.py --verbose
 
 # Errors only (suppress warnings)
-python scripts/validate_architecture.py --errors-only
+python scripts/validate/validate_architecture.py --errors-only
 ```
 
 ### Pre-commit Hook
@@ -644,7 +644,7 @@ Add to your CI pipeline:
 # .github/workflows/ci.yml
 - name: Validate Architecture
   run: |
-    python scripts/validate_architecture.py
+    python scripts/validate/validate_architecture.py
 ```
 
 ---
@@ -703,4 +703,4 @@ class StoreService:
 
 ---
 
-**Remember:** These patterns are enforced automatically. Run `python scripts/validate_architecture.py` before committing!
+**Remember:** These patterns are enforced automatically. Run `python scripts/validate/validate_architecture.py` before committing!

docs/architecture/architecture-violations-status.md

@@ -153,7 +153,7 @@ async def update_merchant_endpoint(merchant_id: int, data: MerchantUpdate, db: S
 ## Validation Command
 
 ```bash
-python scripts/validate_architecture.py
+python scripts/validate/validate_architecture.py
 ```
 
 ## Next Actions

docs/architecture/cross-module-import-rules.md

@@ -183,7 +183,7 @@ def get_module_if_enabled(db, platform_id, module_code):
 
 ## Architecture Validation
 
-The architecture validator (`scripts/validate_architecture.py`) includes rules to detect violations:
+The architecture validator (`scripts/validate/validate_architecture.py`) includes rules to detect violations:
 
 | Rule | Severity | Description |
 |------|----------|-------------|
@@ -193,7 +193,7 @@ The architecture validator (`scripts/validate_architecture.py`) includes rules t
 
 Run validation:
 ```bash
-python scripts/validate_architecture.py
+python scripts/validate/validate_architecture.py
 ```
 
 ## Provider Pattern Summary

docs/architecture/frontend-detection.md

@@ -262,7 +262,7 @@ pytest tests/unit/core/test_frontend_detector.py tests/unit/middleware/test_fron
 
 ## Architecture Rules
 
-These rules are enforced by `scripts/validate_architecture.py`:
+These rules are enforced by `scripts/validate/validate_architecture.py`:
 
 | Rule | Description |
 |------|-------------|

docs/architecture/module-system.md

@@ -1216,7 +1216,7 @@ MARKETPLACE_BATCH_SIZE=500
 
 ## Architecture Validation Rules
 
-The architecture validator (`scripts/validate_architecture.py`) enforces module structure:
+The architecture validator (`scripts/validate/validate_architecture.py`) enforces module structure:
 
 | Rule | Severity | Description |
 |------|----------|-------------|
@@ -1246,7 +1246,7 @@ The architecture validator (`scripts/validate_architecture.py`) enforces module
 
 Run validation:
 ```bash
-python scripts/validate_architecture.py
+python scripts/validate/validate_architecture.py
 ```
 
 ## Best Practices