docs: add mkdocs, update links, add architecture documentation

docs/content/stories/phase3/README.md

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+# Phase 3: Module Framework
+
+## Overview
+Define module interface and registration system, implement static module registry, create permission code generation tool, build module loader (support both static and plugin modes), and add module discovery and initialization.
+
+## Tasks
+
+### 3.1 Module Interface
+- [3.1.1 - Create Module Interface](./3.1.1-create-pkgmodulemodulego.md)
+- [3.1.2 - Create Module Manifest](./3.1.2-create-pkgmodulemanifestgo.md)
+- [3.1.3 - Define Module YAML Schema](./3.1.3-define-moduleyaml-schema-used-for-code-generation.md)
+
+### 3.2 Static Module Registry
+- [3.2.1 - Create Registry](./3.2.1-create-internalregistryregistrygo.md)
+- [3.2.2 - Add Registration Validation](./3.2.2-add-registration-validation.md)
+
+### 3.3 Permission Code Generation
+- [3.3.1 - Create Generate Script](./3.3.1-create-scriptsgenerate-permissionsgo.md)
+- [3.3.2 - Add Go Generate Directive](./3.3.2-add-gogenerate-directive-to-pkgpermpermgo.md)
+- [3.3.3 - Update Makefile](./3.3.3-update-makefile-with-make-generate-command.md)
+
+### 3.4 Module Loader
+- [3.4.1 - Create Loader Interface](./3.4.1-create-internalpluginloaderloadergo.md)
+- [3.4.2 - Implement Static Loader](./3.4.2-implement-internalpluginloaderstatic_loadergo.md)
+- [3.4.3 - Implement Plugin Loader](./3.4.3-implement-internalpluginloaderplugin_loadergo-opti.md)
+
+### 3.5 Module Initialization
+- [3.5.1 - Create Initializer](./3.5.1-create-internalmoduleinitializergo.md)
+- [3.5.2 - Run Migrations](./3.5.2-run-migrations.md)
+
+### 3.6 Module Lifecycle
+- [3.6.1 - Extend Module Interface](./3.6.1-extend-pkgmodulemodulego.md)
+- [3.6.2 - Integrate with FX Lifecycle](./3.6.2-integrate-with-fxlifecycle.md)
+
+### 3.7 Platform CLI
+- [3.7.1 - Create CLI Tool](./3.7.1-create-cmdplatformctlmaingo.md)
+- [3.7.2 - Add to Makefile](./3.7.2-add-to-makefile-make-install-cli.md)
+
+## Deliverables Checklist
+- [ ] Module interface defined
+- [ ] Static module registry implemented
+- [ ] Permission code generation working
+- [ ] Module loader supports static and plugin modes
+- [ ] Modules can be discovered and initialized
+- [ ] Module migrations run on startup
+- [ ] Platform CLI tool for module management
+
+## Acceptance Criteria
+- Modules can be registered statically
+- Permission constants are generated from module manifests
+- Modules are initialized with correct dependency order
+- Module migrations run automatically
+- CLI tool can list and manage modules
+