chore: add docker infrastructure, gists feature, attachment system, and admin CLI tools

- Add .dockerignore, Dockerfile, and docker compose targets to Makefile for containerized deployment
- Implement gists router with CRUD operations, database schema, and polymorphic comment/vote reuse
- Create attachment upload system with thumbnail generation, MIME detection, and storage path management
- Add attachments_prune CLI command to clean orphaned attachment records and files
- Introduce rate limiting middleware with 60 requests per minute window
- Add custom 404 and 500 error handlers with SEO-optimized template responses
- Extend database initialization with gists and attachments indexes plus upload site settings defaults
- Update load_comments to include attachment mapping for comment resources
- Register gists and uploads routers in main application and update AGENTS.md documentation

devplacepy/templates/project_detail.html

@@ -95,7 +95,7 @@
         </div>
 
         <div class="project-detail-meta">
-            <span class="badge" style="background: var(--border); color: var(--text-muted); text-transform: capitalize;">{{ project.get('project_type', 'software').replace('_', ' ') }}</span>
+            <span class="badge badge-type">{{ project.get('project_type', 'software').replace('_', ' ') }}</span>
             {% if project.get('release_date') %}
             <span>&#x1F4C5; Released: {{ project['release_date'] }}</span>
             {% endif %}
@@ -116,6 +116,10 @@
 
         <div class="project-detail-desc rendered-content" data-render>{{ project.get('description', '') }}</div>
 
+        {% if attachments %}
+        {% include "_attachment_display.html" %}
+        {% endif %}
+
         {% if platforms %}
         <div style="margin-bottom: 1.5rem;">
             <h4 style="font-size: 0.75rem; font-weight: 700; text-transform: uppercase; letter-spacing: 0.1em; color: var(--text-muted); margin-bottom: 0.5rem;">Platforms</h4>
@@ -136,7 +140,7 @@
             {% endif %}
             {% if is_owner %}
             <form method="POST" action="/projects/delete/{{ project['slug'] or project['uid'] }}" style="display:inline;">
-                <button type="submit" class="project-star-btn" onclick="return confirm('Delete this project?')">Delete</button>
+                <button type="submit" class="project-star-btn" data-confirm="Delete this project?"><span class="icon">&#x1F5D1;&#xFE0F;</span>Delete</button>
             </form>
             {% endif %}
         </div>