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Internal/en/README.md

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+# Papa-Kind-Treff
+
+Updated: 2026-08-03
+
+Papa-Kind-Treff is a PHP-based platform for fathers focused on local events, appointments, and meetups, community exchange, and a protected member area.
+
+## Scope
+- discover local events, appointments, and meetups
+- community/forum with categories, boards, threads, and replies
+- member area for profile, optional child information, and own events
+- community moderation with a role model
+
+## Current State
+- landing page with hero, event search, event carousel, community preview, and member-area block
+- community with board navigation and separate thread view
+- community admin area for applications, reports, roles, and migrations
+- location-based ordering for the newest events
+- member area with left-side section navigation
+- profile menu with `Profile`, `Children`, `Events`, `Community`, `Settings`
+- account emails and sensitive profile fields are stored encrypted application-side
+- children can be created, edited, and deleted
+- profile address supports encrypted street/house number, address search, browser import, and validation
+
+## Core Wording Rule
+- Primary product term: `Events`
+- Secondary SEO/explanatory terms: `Appointments`, `Meetups`
+
+## Tech
+- entry point: `public/index.php`
+- templates: `partials/`
+- application logic: `src/App/`
+- assets: `public/assets/`
+- database schema: `schema.sql`
+
+## Privacy and Security
+- password hashes via Argon2id
+- account emails are encrypted and additionally addressed through a separate HMAC lookup hash
+- profile fields such as first name, last name, street/house number, phone number, profession, languages, and short bio are encrypted
+- location coordinates (`lat`, `lng`) remain plaintext where technically required for distance and radius search
+- non-essential analytics and third-party services are only active after consent
+
+## Documentation Rule
+Whenever project behavior or structure changes, review and update:
+- `Internal/de/README.md`
+- `Internal/de/PROJECT_CONTEXT.md`
+- `Internal/de/PROJECT_STRUCTURE.md`
+- matching English files under `Internal/en/`
+
+## Parallel DE / EN Maintenance
+- Documentation in `Internal/de/` and `Internal/en/` must remain fully parallel in content.
+- German and English are both binding internal references.
+- The root `README.md` remains the fixed start document for new chats and must be reviewed when core project assumptions change.