refactor: migrate templates and static files to self-contained modules

Templates Migration:
- Migrate admin templates to modules (tenancy, billing, monitoring, marketplace, etc.)
- Migrate vendor templates to modules (tenancy, billing, orders, messaging, etc.)
- Migrate storefront templates to modules (catalog, customers, orders, cart, checkout, cms)
- Migrate public templates to modules (billing, marketplace, cms)
- Keep shared templates in app/templates/ (base.html, errors/, partials/, macros/)
- Migrate letzshop partials to marketplace module

Static Files Migration:
- Migrate admin JS to modules: tenancy (23 files), core (5 files), monitoring (1 file)
- Migrate vendor JS to modules: tenancy (4 files), core (2 files)
- Migrate shared JS: vendor-selector.js to core, media-picker.js to cms
- Migrate storefront JS: storefront-layout.js to core
- Keep framework JS in static/ (api-client, utils, money, icons, log-config, lib/)
- Update all template references to use module_static paths

Naming Consistency:
- Rename static/platform/ to static/public/
- Rename app/templates/platform/ to app/templates/public/
- Update all extends and static references

Documentation:
- Update module-system.md with shared templates documentation
- Update frontend-structure.md with new module JS organization

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

docs/archive/SESSION_NOTE_2026-01-28_module-config-migrations.md

@@ -0,0 +1,161 @@
+# Session Note: Module Config & Migrations Infrastructure
+
+**Date:** 2026-01-28
+**Focus:** Self-contained module configuration and migrations auto-discovery
+
+## Summary
+
+Completed the infrastructure for fully self-contained modules with config and migrations auto-discovery. All modules now have placeholder files ready for the final migration phase.
+
+## What Was Done
+
+### 1. Module Config Auto-Discovery
+
+Created `app/modules/config.py` that auto-discovers module configurations:
+
+```python
+from app.modules.config import get_module_config
+
+marketplace_config = get_module_config("marketplace")
+```
+
+Each module now has a `config.py` placeholder:
+
+```python
+# app/modules/marketplace/config.py
+class MarketplaceConfig(BaseSettings):
+    model_config = {"env_prefix": "MARKETPLACE_"}
+
+config = MarketplaceConfig()
+```
+
+### 2. Module Migrations Directories
+
+Created `migrations/versions/` directories for all 11 self-contained modules:
+- analytics, billing, cms, customers, dev_tools
+- inventory, marketplace, messaging, monitoring, orders, payments
+
+Each with required `__init__.py` files for Alembic discovery.
+
+### 3. New Architecture Rules
+
+Added rules MOD-013 to MOD-015:
+
+| Rule | Description |
+|------|-------------|
+| MOD-013 | config.py should export `config` or `config_class` |
+| MOD-014 | Migrations must follow naming convention `{module}_{seq}_{desc}.py` |
+| MOD-015 | Migrations directory must have `__init__.py` files |
+
+### 4. Module Migration Commits
+
+Committed all pending module migration work:
+
+| Commit | Description |
+|--------|-------------|
+| `2466dfd` | feat: add module config and migrations auto-discovery infrastructure |
+| `bd2c99a` | feat: complete analytics module self-containment |
+| `f79e67d` | feat: complete billing module self-containment |
+| `b74d134` | feat: complete marketplace module self-containment |
+| `705d336` | feat: add self-contained structure to remaining modules |
+| `d987274` | feat: complete dev_tools module self-containment |
+| `37cf74c` | refactor: update registry and main.py for module auto-discovery |
+| `3ffa337` | refactor: convert legacy models/schemas to re-exports |
+| `bf871dc` | refactor: convert legacy services/tasks to re-exports |
+| `fbcf079` | chore: update API routers, validation, and docs |
+
+### 5. Documentation Updates
+
+- `docs/architecture/module-system.md` - Added Module Configuration and Module Migrations sections
+- `docs/development/creating-modules.md` - Added config.py pattern, updated migrations docs
+
+## Current Module Status
+
+| Module | definition.py | config.py | migrations/ | routes/api/ | routes/pages/ | locales/ | Status |
+|--------|--------------|-----------|-------------|-------------|---------------|----------|--------|
+| analytics | ✅ | ✅ | ✅ | ✅ | ✅ | ✅ | **Complete** |
+| billing | ✅ | ✅ | ✅ | ✅ | ⚠️ | ✅ | Needs pages |
+| cms | ✅ | ✅ | ✅ | ✅ | ✅ | - | **Complete** |
+| customers | ✅ | ✅ | ✅ | ⚠️ | ⚠️ | - | Needs routes |
+| dev_tools | ✅ | ✅ | ✅ | ✅ | - | - | **Complete** |
+| inventory | ✅ | ✅ | ✅ | ⚠️ | ⚠️ | - | Needs routes |
+| marketplace | ✅ | ✅ | ✅ | ✅ | ⚠️ | ✅ | Needs pages |
+| messaging | ✅ | ✅ | ✅ | ⚠️ | ⚠️ | - | Needs routes |
+| monitoring | ✅ | ✅ | ✅ | ⚠️ | ⚠️ | - | Needs routes |
+| orders | ✅ | ✅ | ✅ | ⚠️ | ⚠️ | - | Needs routes |
+| payments | ✅ | ✅ | ✅ | ⚠️ | ⚠️ | - | Needs routes |
+| core | ✅ | - | - | - | - | - | Minimal |
+| tenancy | ✅ | - | - | - | - | - | Minimal |
+
+## Decisions Made
+
+1. **Config is environment-based**: Each module uses Pydantic Settings with `{MODULE}_` prefix
+2. **Migrations stay central for now**: Existing migrations remain in `alembic/versions/`, module directories are for future changes
+3. **Migration reorganization deferred**: Will move existing migrations to modules before production
+4. **Legacy files become re-exports**: Original files in `models/database/`, `models/schema/`, `app/services/` re-export from modules
+
+## Tomorrow's Tasks
+
+### Phase 1: Module Alignment Audit
+
+Run architecture validator and fix all modules to comply with rules:
+
+```bash
+python scripts/validate_architecture.py
+```
+
+Check each module for:
+- [ ] MOD-001: Required directories exist
+- [ ] MOD-002: Services contain actual code (not re-exports)
+- [ ] MOD-003: Schemas contain actual code (not re-exports)
+- [ ] MOD-004: Routes import from module, not legacy
+- [ ] MOD-005: Templates and static exist for UI modules
+- [ ] MOD-008: exceptions.py exists
+- [ ] MOD-010: Routes export `router` variable
+- [ ] MOD-011: Tasks have `__init__.py`
+
+### Phase 2: Complete Module Routes Migration
+
+Move remaining routes to self-contained structure:
+
+1. **customers** - Move routes from `app/api/v1/*/customers.py`
+2. **inventory** - Move routes from `app/api/v1/*/inventory.py`
+3. **messaging** - Move routes from `app/api/v1/*/messages.py`
+4. **monitoring** - Move routes from `app/api/v1/admin/monitoring.py`
+5. **orders** - Move routes from `app/api/v1/*/orders.py`
+6. **payments** - Move routes from `app/api/v1/*/payments.py`
+
+### Phase 3: Migration Reorganization (Pre-Production)
+
+Move existing migrations to module-specific directories:
+
+1. Identify which tables belong to which module
+2. Create baseline migrations in module directories
+3. Test migration chain works correctly
+4. Remove/reorganize central migrations
+
+### Phase 4: Validation & Testing
+
+1. Run full architecture validation
+2. Test all routes are accessible
+3. Test module enable/disable functionality
+4. Verify Alembic discovers all migrations
+
+## Files Changed
+
+### New Files
+- `app/modules/config.py` - Config auto-discovery
+- `app/modules/*/config.py` - Module config placeholders (11 files)
+- `app/modules/*/migrations/__init__.py` - Migration package markers (11 modules)
+- `app/modules/*/migrations/versions/__init__.py` - Version package markers (11 modules)
+- `.architecture-rules/module.yaml` - Module validation rules
+
+### Modified Files
+- `docs/architecture/module-system.md` - Added config/migrations sections
+- `docs/development/creating-modules.md` - Added config pattern, updated migrations
+
+## Related Documentation
+
+- [Module System Architecture](../architecture/module-system.md)
+- [Creating Modules Guide](../development/creating-modules.md)
+- [Module Migration Plan](module-migration-plan.md)