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).

seeds/temperature-reading.yaml

@@ -0,0 +1,37 @@
+id: temperature-reading
+title: Temperature Reading
+description: >-
+  A regular practice for surfacing group dynamics before they escalate,
+  developed by Diana Larsen at the Software Testing Support Center.
+source: STSC / Diana Larsen
+source_url: https://www.dianalarsen.com/
+tags: [check-in, conflict]
+forked_from: null
+image: null
+steps:
+  - headline: Appreciations
+    description: >-
+      Each person shares something they appreciate about another group
+      member or the group as a whole.
+  - headline: New information
+    description: >-
+      Each person shares any new information relevant to the group that
+      others may not know.
+  - headline: Puzzles
+    description: >-
+      Each person shares something they are confused or wondering about.
+      No responses needed yet.
+  - headline: Complaints with advice
+    description: >-
+      Each person may share a complaint — but must pair it with a
+      suggestion for improvement.
+  - headline: Wishes, hopes, and dreams
+    description: >-
+      Each person shares something they hope for the group's future.
+      End on an aspirational note.
+outcome: >-
+  The group has a current snapshot of its emotional and informational
+  state. Unspoken tensions have a structured outlet.
+practice: >-
+  Do this regularly (weekly or biweekly) so it becomes routine. Time-box
+  each section to 5 minutes. Model vulnerability as a facilitator.