feat: initial release of Protocol Droid v0.2.0

A tool for authoring, sharing, and curating social protocols.

Features:
- Protocol library with search, tag filtering, and sort by date/relevance
- Protocol authoring with structured fields (title, description, steps, outcome, practice, source, tags)
- Protocol forking with provenance tracking
- Collection creation with searchable protocol picker and ordering
- User accounts with roles (admin, member, viewer)
- YAML import/export for portability
- Self-hostable on LAMP/Cloudron, works in subdirectories
- Responsive design with hamburger menu on mobile
- About page

Security:
- CSRF protection via Origin/Referer validation
- Session regeneration on login/register
- Secure session cookie params (HttpOnly, SameSite, Secure)
- Visibility enforcement on private/unlisted items
- YAML object injection hardening
- Login rate limiting
- Path traversal protection
- Input validation and length clamping
- Vote value constraining

Stack: PHP 8.x + MySQL/MariaDB, vanilla JS frontend, no external dependencies.

Hippocratic License (HL3-CORE).

.gitignore

@@ -0,0 +1,24 @@
+# Docker
+docker-compose.yml
+
+# Design sketches (not part of the app)
+sketches/
+
+# Runtime data
+data/
+*.db
+*.sqlite
+
+# Environment
+.env
+
+# OS files
+.DS_Store
+Thumbs.db
+
+# Editor files
+*.swp
+*.swo
+*~
+.vscode/
+.idea/