Add SmartTools Registry and Web UI (Phases 1-7)

Registry Features (Phases 1-6):
- Tool manifest format and validation
- Registry client for API communication
- Resolver integration for tool installation
- CLI commands: install, search, browse, publish, auth
- TUI browse interface with urwid
- Smart features: auto-categorization, similarity suggestions

Web UI (Phase 7):
- Flask blueprint with server-side sessions
- Authentication routes (login, register, logout)
- Public pages: landing, tools browse, tool detail, search
- Dashboard: overview, tools management, API tokens, settings
- Template components: cards, forms, callouts, code blocks
- Tailwind CSS build pipeline
- SEO infrastructure (sitemap, robots.txt)
- Cookie consent and privacy compliance

Infrastructure:
- SQLite database with FTS5 search
- Rate limiting for API endpoints
- Git-based tool submission workflow
- Session management with auto-cleanup

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude Opus 4.5 <[email protected]>

src/smarttools/web/templates/pages/content.html

@@ -0,0 +1,12 @@
+{% extends "base.html" %}
+
+{% block title %}{{ title }} - SmartTools{% endblock %}
+
+{% block content %}
+<section class="bg-white py-16">
+    <div class="max-w-3xl mx-auto px-4 sm:px-6 lg:px-8">
+        <h1 class="text-3xl font-bold text-gray-900">{{ title }}</h1>
+        <p class="mt-4 text-gray-600">{{ body }}</p>
+    </div>
+</section>
+{% endblock %}