9b

.env.example

@@ -1,9 +1,9 @@
-# ── Datenbank ──────────────────────────────────────────────────
+# ── Datenbank (PostgreSQL v9b+) ────────────────────────────────
-# v9 (PostgreSQL):
+DB_HOST=postgres
-DB_PASSWORD=sicheres_passwort_hier
+DB_PORT=5432
-
+DB_NAME=mitai
-# v8 (SQLite, legacy):
+DB_USER=mitai
-# DATA_DIR=/app/data
+DB_PASSWORD=CHANGE_ME_STRONG_PASSWORD_HERE
 
 # ── KI ─────────────────────────────────────────────────────────
 # OpenRouter (empfohlen):

.gitignore

@@ -58,3 +58,6 @@ coverage/
 # Temp
 tmp/
 *.tmp
+
+#.claude Konfiguration 
+.claude/

CLAUDE.md

@@ -293,3 +293,154 @@ Wortmarke:     Jin(light) + ken(bold #1D9E75) + do(light)
 /add-endpoint    → Neuen API-Endpoint hinzufügen
 /db-add-column   → Neue DB-Spalte hinzufügen
 ```
+
+## Jinkendo App-Familie & Markenarchitektur
+
+### Philosophie
+**Jinkendo** (人拳道) = Jin (人 Mensch) + Ken (拳 Faust) + Do (道 Weg)
+"Der menschliche Weg der Kampfkunst" – ruhig aber kraftvoll, Selbstwahrnehmung, Meditation, Zielorientiert
+
+### App-Familie (Subdomain-Architektur)
+```
+mitai.jinkendo.de    → Körper-Tracker (身体 = eigener Körper)    ← DIESE APP
+miken.jinkendo.de    → Meditation (眉間 = drittes Auge)
+ikigai.jinkendo.de   → Lebenssinn/Ziele (生き甲斐)
+shinkan.jinkendo.de  → Kampfsport (真観 = wahre Wahrnehmung)
+kenkou.jinkendo.de   → Gesundheit allgemein (健康) – für später aufsparen
+```
+
+### Registrierte Domains
+- jinkendo.de, jinkendo.com, jinkendo.life – alle registriert bei Strato
+
+## v9b Detailplan – Freemium Tier-System
+
+### Tier-Modell
+```
+free       → Selbst-Registrierung, 14-Tage Trial, eingeschränkt
+basic      → Kernfunktionen (Abo Stufe 1)
+premium    → Alles inkl. KI und Connectoren (Abo Stufe 2)
+selfhosted → Lars' Heimversion, keine Einschränkungen
+```
+
+### Geplante DB-Erweiterungen (profiles Tabelle)
+```sql
+tier              TEXT DEFAULT 'free'
+trial_ends_at     TEXT  -- ISO datetime
+sub_valid_until   TEXT  -- ISO datetime
+email_verified    INTEGER DEFAULT 0
+email_verify_token TEXT
+invited_by        TEXT  -- profile_id FK
+invitation_token  TEXT
+```
+
+### Tier-Limits (geplant)
+| Feature | free | basic | premium | selfhosted |
+|---------|------|-------|---------|------------|
+| Gewicht-Einträge | 30 | unbegrenzt | unbegrenzt | unbegrenzt |
+| KI-Analysen/Monat | 0 | 3 | unbegrenzt | unbegrenzt |
+| Ernährung Import | ❌ | ✅ | ✅ | ✅ |
+| Export | ❌ | ✅ | ✅ | ✅ |
+| Fitness-Connectoren | ❌ | ❌ | ✅ | ✅ |
+
+### Registrierungs-Flow (geplant)
+```
+1. Selbst-Registrierung: Name + E-Mail + Passwort
+2. Auto-Trial: tier='free', trial_ends_at=now+14d
+3. E-Mail-Bestätigung → email_verified=1
+4. Trial läuft ab → Upgrade-Prompt
+5. Einladungslinks: Admin generiert Token → direkt basic-Tier
+6. Stripe Integration: später (v9b ohne Stripe, nur Tier-Logik)
+```
+
+## Infrastruktur Details
+
+### Heimnetzwerk
+```
+Internet
+    → Fritz!Box 7530 AX (DynDNS: privat.stommer.com)
+    → Synology NAS (192.168.2.63, Reverse Proxy + Let's Encrypt)
+    → Raspberry Pi 5 (192.168.2.49, Docker)
+    → MiniPC (192.168.2.144, Gitea auf Port 3000)
+```
+
+### Synology Reverse Proxy Regeln
+```
+mitai.jinkendo.de     → HTTP 192.168.2.49:3002  (Prod Frontend)
+dev.mitai.jinkendo.de → HTTP 192.168.2.49:3099  (Dev Frontend)
+```
+
+### AdGuard DNS Rewrites (für internes Routing)
+```
+mitai.jinkendo.de     → 192.168.2.63
+dev.mitai.jinkendo.de → 192.168.2.63
+```
+
+### Fritz!Box DNS-Rebind Ausnahmen
+```
+jinkendo.de
+mitai.jinkendo.de
+```
+
+### Pi Verzeichnisstruktur
+```
+/home/lars/docker/
+├── bodytrack/      → Prod (main branch, docker-compose.yml)
+└── bodytrack-dev/  → Dev  (develop branch, docker-compose.dev-env.yml)
+```
+
+### Gitea Runner
+```
+Runner: raspberry-pi (auf Pi installiert)
+Service: /etc/systemd/system/gitea-runner.service
+Binary: /home/lars/gitea-runner/act_runner
+```
+
+### Container Namen
+```
+Prod: mitai-api, mitai-ui
+Dev:  dev-mitai-api, dev-mitai-ui
+```
+
+## Bekannte Probleme & Lösungen
+
+### dayjs.week() – NIEMALS verwenden
+```javascript
+// ❌ Falsch:
+const week = dayjs(date).week()
+
+// ✅ Richtig (ISO 8601):
+const weekNum = (() => {
+  const dt = new Date(date)
+  dt.setHours(0,0,0,0)
+  dt.setDate(dt.getDate()+4-(dt.getDay()||7))
+  const y = new Date(dt.getFullYear(),0,1)
+  return Math.ceil(((dt-y)/86400000+1)/7)
+})()
+```
+
+### session=Depends(require_auth) – Korrekte Platzierung
+```python
+# ❌ Falsch (führt zu NameError oder ungeschütztem Endpoint):
+def endpoint(x_profile_id: Optional[str] = Header(default=None, session=Depends(require_auth))):
+
+# ✅ Richtig (separater Parameter):
+def endpoint(x_profile_id: Optional[str] = Header(default=None), 
+             session: dict = Depends(require_auth)):
+```
+
+### Recharts Bar fill=function – nicht unterstützt
+```jsx
+// ❌ Falsch:
+<Bar fill={(entry) => entry.color}/>
+
+// ✅ Richtig:
+<Bar fill="#1D9E75"/>
+```
+
+### SQLite neue Spalten hinzufügen
+```python
+# In _safe_alters Liste hinzufügen (NICHT direkt ALTER TABLE):
+_safe_alters = [
+    ("profiles", "neue_spalte TEXT DEFAULT NULL"),
+]
+```

backend/Dockerfile

@@ -1,7 +1,22 @@
 FROM python:3.12-slim
+
+# Install PostgreSQL client for psql (needed for startup.sh)
+RUN apt-get update && apt-get install -y postgresql-client && rm -rf /var/lib/apt/lists/*
+
 WORKDIR /app
+
+# Install Python dependencies
 COPY requirements.txt .
 RUN pip install --no-cache-dir -r requirements.txt
+
+# Copy application code
 COPY . .
+
+# Create directories
 RUN mkdir -p /app/data /app/photos
-CMD ["uvicorn", "main:app", "--host", "0.0.0.0", "--port", "8000"]
+
+# Make startup script executable
+RUN chmod +x /app/startup.sh
+
+# Use startup script instead of direct uvicorn
+CMD ["/app/startup.sh"]

backend/db.py

@@ -0,0 +1,150 @@
+"""
+PostgreSQL Database Connector for Mitai Jinkendo (v9b)
+
+Provides connection pooling and helper functions for database operations.
+Compatible drop-in replacement for the previous SQLite get_db() pattern.
+"""
+import os
+from contextlib import contextmanager
+from typing import Optional, Dict, Any, List
+import psycopg2
+from psycopg2.extras import RealDictCursor
+import psycopg2.pool
+
+
+# Global connection pool
+_pool: Optional[psycopg2.pool.SimpleConnectionPool] = None
+
+
+def init_pool():
+    """Initialize PostgreSQL connection pool."""
+    global _pool
+    if _pool is None:
+        _pool = psycopg2.pool.SimpleConnectionPool(
+            minconn=1,
+            maxconn=10,
+            host=os.getenv("DB_HOST", "postgres"),
+            port=int(os.getenv("DB_PORT", "5432")),
+            database=os.getenv("DB_NAME", "mitai"),
+            user=os.getenv("DB_USER", "mitai"),
+            password=os.getenv("DB_PASSWORD", "")
+        )
+        print(f"✓ PostgreSQL connection pool initialized ({os.getenv('DB_HOST', 'postgres')}:{os.getenv('DB_PORT', '5432')})")
+
+
+@contextmanager
+def get_db():
+    """
+    Context manager for database connections.
+
+    Usage:
+        with get_db() as conn:
+            cur = conn.cursor()
+            cur.execute("SELECT * FROM profiles")
+            rows = cur.fetchall()
+
+    Auto-commits on success, auto-rolls back on exception.
+    """
+    if _pool is None:
+        init_pool()
+
+    conn = _pool.getconn()
+    try:
+        yield conn
+        conn.commit()
+    except Exception:
+        conn.rollback()
+        raise
+    finally:
+        _pool.putconn(conn)
+
+
+def get_cursor(conn):
+    """
+    Get cursor with RealDictCursor for dict-like row access.
+
+    Returns rows as dictionaries: {'column_name': value, ...}
+    Compatible with previous sqlite3.Row behavior.
+    """
+    return conn.cursor(cursor_factory=RealDictCursor)
+
+
+def r2d(row) -> Optional[Dict[str, Any]]:
+    """
+    Convert row to dict (compatibility helper).
+
+    Args:
+        row: RealDictRow from psycopg2
+
+    Returns:
+        Dictionary or None if row is None
+    """
+    return dict(row) if row else None
+
+
+def execute_one(conn, query: str, params: tuple = ()) -> Optional[Dict[str, Any]]:
+    """
+    Execute query and return one row as dict.
+
+    Args:
+        conn: Database connection from get_db()
+        query: SQL query with %s placeholders
+        params: Tuple of parameters
+
+    Returns:
+        Dictionary with column:value pairs, or None if no row found
+
+    Example:
+        profile = execute_one(conn, "SELECT * FROM profiles WHERE id=%s", (pid,))
+        if profile:
+            print(profile['name'])
+    """
+    with get_cursor(conn) as cur:
+        cur.execute(query, params)
+        row = cur.fetchone()
+        return r2d(row)
+
+
+def execute_all(conn, query: str, params: tuple = ()) -> List[Dict[str, Any]]:
+    """
+    Execute query and return all rows as list of dicts.
+
+    Args:
+        conn: Database connection from get_db()
+        query: SQL query with %s placeholders
+        params: Tuple of parameters
+
+    Returns:
+        List of dictionaries (one per row)
+
+    Example:
+        weights = execute_all(conn,
+            "SELECT * FROM weight_log WHERE profile_id=%s ORDER BY date DESC",
+            (pid,)
+        )
+        for w in weights:
+            print(w['date'], w['weight'])
+    """
+    with get_cursor(conn) as cur:
+        cur.execute(query, params)
+        rows = cur.fetchall()
+        return [r2d(r) for r in rows]
+
+
+def execute_write(conn, query: str, params: tuple = ()) -> None:
+    """
+    Execute INSERT/UPDATE/DELETE query.
+
+    Args:
+        conn: Database connection from get_db()
+        query: SQL query with %s placeholders
+        params: Tuple of parameters
+
+    Example:
+        execute_write(conn,
+            "UPDATE profiles SET name=%s WHERE id=%s",
+            ("New Name", pid)
+        )
+    """
+    with get_cursor(conn) as cur:
+        cur.execute(query, params)

backend/migrate_to_postgres.py

@@ -0,0 +1,369 @@
+#!/usr/bin/env python3
+"""
+SQLite → PostgreSQL Migration Script für Mitai Jinkendo (v9a → v9b)
+
+Migrates all data from SQLite to PostgreSQL with type conversions and validation.
+
+Usage:
+    # Inside Docker container:
+    python migrate_to_postgres.py
+
+    # Or locally with custom paths:
+    DATA_DIR=./data DB_HOST=localhost python migrate_to_postgres.py
+
+Environment Variables:
+    SQLite Source:
+        DATA_DIR (default: ./data)
+
+    PostgreSQL Target:
+        DB_HOST (default: postgres)
+        DB_PORT (default: 5432)
+        DB_NAME (default: mitai)
+        DB_USER (default: mitai)
+        DB_PASSWORD (required)
+"""
+import os
+import sys
+import sqlite3
+from pathlib import Path
+from typing import Dict, Any, List, Optional
+import psycopg2
+from psycopg2.extras import execute_values, RealDictCursor
+
+
+# ================================================================
+# CONFIGURATION
+# ================================================================
+
+# SQLite Source
+DATA_DIR = Path(os.getenv("DATA_DIR", "./data"))
+SQLITE_DB = DATA_DIR / "bodytrack.db"
+
+# PostgreSQL Target
+PG_CONFIG = {
+    'host': os.getenv("DB_HOST", "postgres"),
+    'port': int(os.getenv("DB_PORT", "5432")),
+    'database': os.getenv("DB_NAME", "mitai"),
+    'user': os.getenv("DB_USER", "mitai"),
+    'password': os.getenv("DB_PASSWORD", "")
+}
+
+# Tables to migrate (in order - respects foreign keys)
+TABLES = [
+    'profiles',
+    'sessions',
+    'ai_usage',
+    'ai_prompts',
+    'weight_log',
+    'circumference_log',
+    'caliper_log',
+    'nutrition_log',
+    'activity_log',
+    'photos',
+    'ai_insights',
+]
+
+# Columns that need INTEGER (0/1) → BOOLEAN conversion
+BOOLEAN_COLUMNS = {
+    'profiles': ['ai_enabled', 'export_enabled'],
+    'ai_prompts': ['active'],
+}
+
+
+# ================================================================
+# CONVERSION HELPERS
+# ================================================================
+
+def convert_value(value: Any, column: str, table: str) -> Any:
+    """
+    Convert SQLite value to PostgreSQL-compatible format.
+
+    Args:
+        value: Raw value from SQLite
+        column: Column name
+        table: Table name
+
+    Returns:
+        Converted value suitable for PostgreSQL
+    """
+    # NULL values pass through
+    if value is None:
+        return None
+
+    # INTEGER → BOOLEAN conversion
+    if table in BOOLEAN_COLUMNS and column in BOOLEAN_COLUMNS[table]:
+        return bool(value)
+
+    # All other values pass through
+    # (PostgreSQL handles TEXT timestamps, UUIDs, and numerics automatically)
+    return value
+
+
+def convert_row(row: Dict[str, Any], table: str) -> Dict[str, Any]:
+    """
+    Convert entire row from SQLite to PostgreSQL format.
+
+    Args:
+        row: Dictionary with column:value pairs from SQLite
+        table: Table name
+
+    Returns:
+        Converted dictionary
+    """
+    return {
+        column: convert_value(value, column, table)
+        for column, value in row.items()
+    }
+
+
+# ================================================================
+# MIGRATION LOGIC
+# ================================================================
+
+def get_sqlite_rows(table: str) -> List[Dict[str, Any]]:
+    """
+    Fetch all rows from SQLite table.
+
+    Args:
+        table: Table name
+
+    Returns:
+        List of dictionaries (one per row)
+    """
+    conn = sqlite3.connect(SQLITE_DB)
+    conn.row_factory = sqlite3.Row
+    cur = conn.cursor()
+
+    try:
+        rows = cur.execute(f"SELECT * FROM {table}").fetchall()
+        return [dict(row) for row in rows]
+    except sqlite3.OperationalError as e:
+        # Table doesn't exist in SQLite (OK, might be new in v9b)
+        print(f"    ⚠ Table '{table}' not found in SQLite: {e}")
+        return []
+    finally:
+        conn.close()
+
+
+def migrate_table(pg_conn, table: str) -> Dict[str, int]:
+    """
+    Migrate one table from SQLite to PostgreSQL.
+
+    Args:
+        pg_conn: PostgreSQL connection
+        table: Table name
+
+    Returns:
+        Dictionary with stats: {'sqlite_count': N, 'postgres_count': M}
+    """
+    print(f"  Migrating '{table}'...", end=' ', flush=True)
+
+    # Fetch from SQLite
+    sqlite_rows = get_sqlite_rows(table)
+    sqlite_count = len(sqlite_rows)
+
+    if sqlite_count == 0:
+        print("(empty)")
+        return {'sqlite_count': 0, 'postgres_count': 0}
+
+    # Convert rows
+    converted_rows = [convert_row(row, table) for row in sqlite_rows]
+
+    # Get column names
+    columns = list(converted_rows[0].keys())
+    cols_str = ', '.join(columns)
+    placeholders = ', '.join(['%s'] * len(columns))
+
+    # Insert into PostgreSQL
+    pg_cur = pg_conn.cursor()
+
+    # Build INSERT query
+    query = f"INSERT INTO {table} ({cols_str}) VALUES %s"
+
+    # Prepare values (list of tuples)
+    values = [
+        tuple(row[col] for col in columns)
+        for row in converted_rows
+    ]
+
+    # Batch insert with execute_values (faster than executemany)
+    try:
+        execute_values(pg_cur, query, values, page_size=100)
+    except psycopg2.Error as e:
+        print(f"\n    ✗ Insert failed: {e}")
+        raise
+
+    # Verify row count
+    pg_cur.execute(f"SELECT COUNT(*) FROM {table}")
+    postgres_count = pg_cur.fetchone()[0]
+
+    print(f"✓ {sqlite_count} rows → {postgres_count} rows")
+
+    return {
+        'sqlite_count': sqlite_count,
+        'postgres_count': postgres_count
+    }
+
+
+def verify_migration(pg_conn, stats: Dict[str, Dict[str, int]]):
+    """
+    Verify migration integrity.
+
+    Args:
+        pg_conn: PostgreSQL connection
+        stats: Migration stats per table
+    """
+    print("\n═══════════════════════════════════════════════════════════")
+    print("VERIFICATION")
+    print("═══════════════════════════════════════════════════════════")
+
+    all_ok = True
+
+    for table, counts in stats.items():
+        sqlite_count = counts['sqlite_count']
+        postgres_count = counts['postgres_count']
+
+        status = "✓" if sqlite_count == postgres_count else "✗"
+        print(f"  {status} {table:20s}  SQLite: {sqlite_count:5d}  →  PostgreSQL: {postgres_count:5d}")
+
+        if sqlite_count != postgres_count:
+            all_ok = False
+
+    # Sample some data
+    print("\n───────────────────────────────────────────────────────────")
+    print("SAMPLE DATA (first profile)")
+    print("───────────────────────────────────────────────────────────")
+
+    cur = pg_conn.cursor(cursor_factory=RealDictCursor)
+    cur.execute("SELECT * FROM profiles LIMIT 1")
+    profile = cur.fetchone()
+
+    if profile:
+        for key, value in dict(profile).items():
+            print(f"  {key:20s} = {value}")
+    else:
+        print("  (no profiles found)")
+
+    print("\n───────────────────────────────────────────────────────────")
+    print("SAMPLE DATA (latest weight entry)")
+    print("───────────────────────────────────────────────────────────")
+
+    cur.execute("SELECT * FROM weight_log ORDER BY date DESC LIMIT 1")
+    weight = cur.fetchone()
+
+    if weight:
+        for key, value in dict(weight).items():
+            print(f"  {key:20s} = {value}")
+    else:
+        print("  (no weight entries found)")
+
+    print("\n═══════════════════════════════════════════════════════════")
+
+    if all_ok:
+        print("✓ MIGRATION SUCCESSFUL - All row counts match!")
+    else:
+        print("✗ MIGRATION FAILED - Row count mismatch detected!")
+        sys.exit(1)
+
+
+# ================================================================
+# MAIN
+# ================================================================
+
+def main():
+    print("═══════════════════════════════════════════════════════════")
+    print("MITAI JINKENDO - SQLite → PostgreSQL Migration (v9a → v9b)")
+    print("═══════════════════════════════════════════════════════════\n")
+
+    # Check SQLite DB exists
+    if not SQLITE_DB.exists():
+        print(f"✗ SQLite database not found: {SQLITE_DB}")
+        print(f"  Set DATA_DIR environment variable if needed.")
+        sys.exit(1)
+
+    print(f"✓ SQLite source: {SQLITE_DB}")
+    print(f"✓ PostgreSQL target: {PG_CONFIG['user']}@{PG_CONFIG['host']}:{PG_CONFIG['port']}/{PG_CONFIG['database']}\n")
+
+    # Check PostgreSQL password
+    if not PG_CONFIG['password']:
+        print("✗ DB_PASSWORD environment variable not set!")
+        sys.exit(1)
+
+    # Connect to PostgreSQL
+    print("Connecting to PostgreSQL...", end=' ', flush=True)
+    try:
+        pg_conn = psycopg2.connect(**PG_CONFIG)
+        print("✓")
+    except psycopg2.Error as e:
+        print(f"\n✗ Connection failed: {e}")
+        print("\nTroubleshooting:")
+        print("  - Is PostgreSQL running? (docker compose ps)")
+        print("  - Is DB_PASSWORD correct?")
+        print("  - Is the schema initialized? (schema.sql loaded?)")
+        sys.exit(1)
+
+    # Check if schema is initialized
+    print("Checking PostgreSQL schema...", end=' ', flush=True)
+    cur = pg_conn.cursor()
+    cur.execute("""
+        SELECT COUNT(*) FROM information_schema.tables
+        WHERE table_schema = 'public' AND table_name = 'profiles'
+    """)
+    if cur.fetchone()[0] == 0:
+        print("\n✗ Schema not initialized!")
+        print("\nRun this first:")
+        print("  docker compose exec backend python -c \"from main import init_db; init_db()\"")
+        print("  Or manually load schema.sql")
+        sys.exit(1)
+    print("✓")
+
+    # Check if PostgreSQL is empty
+    print("Checking if PostgreSQL is empty...", end=' ', flush=True)
+    cur.execute("SELECT COUNT(*) FROM profiles")
+    existing_profiles = cur.fetchone()[0]
+    if existing_profiles > 0:
+        print(f"\n⚠ WARNING: PostgreSQL already has {existing_profiles} profiles!")
+        response = input("  Continue anyway? This will create duplicates! (yes/no): ")
+        if response.lower() != 'yes':
+            print("Migration cancelled.")
+            sys.exit(0)
+    else:
+        print("✓")
+
+    print("\n───────────────────────────────────────────────────────────")
+    print("MIGRATION")
+    print("───────────────────────────────────────────────────────────")
+
+    stats = {}
+
+    try:
+        for table in TABLES:
+            stats[table] = migrate_table(pg_conn, table)
+
+        # Commit all changes
+        pg_conn.commit()
+        print("\n✓ All changes committed to PostgreSQL")
+
+    except Exception as e:
+        print(f"\n✗ Migration failed: {e}")
+        print("Rolling back...")
+        pg_conn.rollback()
+        pg_conn.close()
+        sys.exit(1)
+
+    # Verification
+    verify_migration(pg_conn, stats)
+
+    # Cleanup
+    pg_conn.close()
+
+    print("\n✓ Migration complete!")
+    print("\nNext steps:")
+    print("  1. Test login with existing credentials")
+    print("  2. Check Dashboard (weight chart, stats)")
+    print("  3. Verify KI-Analysen work")
+    print("  4. If everything works: commit + push to develop")
+
+
+if __name__ == '__main__':
+    main()

backend/requirements.txt

@@ -7,3 +7,4 @@ aiofiles==23.2.1
 pydantic==2.7.1
 bcrypt==4.1.3
 slowapi==0.1.9
+psycopg2-binary==2.9.9

backend/schema.sql

@@ -0,0 +1,260 @@
+-- ================================================================
+-- MITAI JINKENDO v9b – PostgreSQL Schema
+-- ================================================================
+-- Migration from SQLite to PostgreSQL
+-- Includes v9b Tier System features
+-- ================================================================
+
+-- Enable UUID Extension
+CREATE EXTENSION IF NOT EXISTS "uuid-ossp";
+
+-- ================================================================
+-- CORE TABLES
+-- ================================================================
+
+-- ── Profiles Table ──────────────────────────────────────────────
+-- User/Profile management with auth and permissions
+CREATE TABLE IF NOT EXISTS profiles (
+    id              UUID PRIMARY KEY DEFAULT uuid_generate_v4(),
+    name            VARCHAR(255) NOT NULL DEFAULT 'Nutzer',
+    avatar_color    VARCHAR(7) DEFAULT '#1D9E75',
+    photo_id        UUID,
+    sex             VARCHAR(1) DEFAULT 'm' CHECK (sex IN ('m', 'w', 'd')),
+    dob             DATE,
+    height          NUMERIC(5,2) DEFAULT 178,
+    goal_weight     NUMERIC(5,2),
+    goal_bf_pct     NUMERIC(4,2),
+
+    -- Auth & Permissions
+    role            VARCHAR(20) DEFAULT 'user' CHECK (role IN ('user', 'admin')),
+    pin_hash        TEXT,
+    auth_type       VARCHAR(20) DEFAULT 'pin' CHECK (auth_type IN ('pin', 'email')),
+    session_days    INTEGER DEFAULT 30,
+    ai_enabled      BOOLEAN DEFAULT TRUE,
+    ai_limit_day    INTEGER,
+    export_enabled  BOOLEAN DEFAULT TRUE,
+    email           VARCHAR(255) UNIQUE,
+
+    -- v9b: Tier System
+    tier                VARCHAR(20) DEFAULT 'free' CHECK (tier IN ('free', 'basic', 'premium', 'selfhosted')),
+    tier_expires_at     TIMESTAMP WITH TIME ZONE,
+    trial_ends_at       TIMESTAMP WITH TIME ZONE,
+    invited_by          UUID REFERENCES profiles(id),
+
+    -- Timestamps
+    created         TIMESTAMP WITH TIME ZONE DEFAULT CURRENT_TIMESTAMP,
+    updated         TIMESTAMP WITH TIME ZONE DEFAULT CURRENT_TIMESTAMP
+);
+
+CREATE INDEX IF NOT EXISTS idx_profiles_email ON profiles(email) WHERE email IS NOT NULL;
+CREATE INDEX IF NOT EXISTS idx_profiles_tier ON profiles(tier);
+
+-- ── Sessions Table ──────────────────────────────────────────────
+-- Auth token management
+CREATE TABLE IF NOT EXISTS sessions (
+    token       VARCHAR(64) PRIMARY KEY,
+    profile_id  UUID NOT NULL REFERENCES profiles(id) ON DELETE CASCADE,
+    expires_at  TIMESTAMP WITH TIME ZONE NOT NULL,
+    created     TIMESTAMP WITH TIME ZONE DEFAULT CURRENT_TIMESTAMP
+);
+
+CREATE INDEX IF NOT EXISTS idx_sessions_profile_id ON sessions(profile_id);
+CREATE INDEX IF NOT EXISTS idx_sessions_expires_at ON sessions(expires_at);
+
+-- ── AI Usage Tracking ───────────────────────────────────────────
+-- Daily AI call limits per profile
+CREATE TABLE IF NOT EXISTS ai_usage (
+    id          UUID PRIMARY KEY DEFAULT uuid_generate_v4(),
+    profile_id  UUID NOT NULL REFERENCES profiles(id) ON DELETE CASCADE,
+    date        DATE NOT NULL,
+    call_count  INTEGER DEFAULT 0,
+    UNIQUE(profile_id, date)
+);
+
+CREATE INDEX IF NOT EXISTS idx_ai_usage_profile_date ON ai_usage(profile_id, date);
+
+-- ================================================================
+-- TRACKING TABLES
+-- ================================================================
+
+-- ── Weight Log ──────────────────────────────────────────────────
+CREATE TABLE IF NOT EXISTS weight_log (
+    id          UUID PRIMARY KEY DEFAULT uuid_generate_v4(),
+    profile_id  UUID NOT NULL REFERENCES profiles(id) ON DELETE CASCADE,
+    date        DATE NOT NULL,
+    weight      NUMERIC(5,2) NOT NULL,
+    note        TEXT,
+    source      VARCHAR(20) DEFAULT 'manual',
+    created     TIMESTAMP WITH TIME ZONE DEFAULT CURRENT_TIMESTAMP
+);
+
+CREATE INDEX IF NOT EXISTS idx_weight_log_profile_date ON weight_log(profile_id, date DESC);
+CREATE UNIQUE INDEX IF NOT EXISTS idx_weight_log_profile_date_unique ON weight_log(profile_id, date);
+
+-- ── Circumference Log ───────────────────────────────────────────
+CREATE TABLE IF NOT EXISTS circumference_log (
+    id          UUID PRIMARY KEY DEFAULT uuid_generate_v4(),
+    profile_id  UUID NOT NULL REFERENCES profiles(id) ON DELETE CASCADE,
+    date        DATE NOT NULL,
+    c_neck      NUMERIC(5,2),
+    c_chest     NUMERIC(5,2),
+    c_waist     NUMERIC(5,2),
+    c_belly     NUMERIC(5,2),
+    c_hip       NUMERIC(5,2),
+    c_thigh     NUMERIC(5,2),
+    c_calf      NUMERIC(5,2),
+    c_arm       NUMERIC(5,2),
+    notes       TEXT,
+    photo_id    UUID,
+    created     TIMESTAMP WITH TIME ZONE DEFAULT CURRENT_TIMESTAMP
+);
+
+CREATE INDEX IF NOT EXISTS idx_circumference_profile_date ON circumference_log(profile_id, date DESC);
+
+-- ── Caliper Log ─────────────────────────────────────────────────
+CREATE TABLE IF NOT EXISTS caliper_log (
+    id              UUID PRIMARY KEY DEFAULT uuid_generate_v4(),
+    profile_id      UUID NOT NULL REFERENCES profiles(id) ON DELETE CASCADE,
+    date            DATE NOT NULL,
+    sf_method       VARCHAR(20) DEFAULT 'jackson3',
+    sf_chest        NUMERIC(5,2),
+    sf_axilla       NUMERIC(5,2),
+    sf_triceps      NUMERIC(5,2),
+    sf_subscap      NUMERIC(5,2),
+    sf_suprailiac   NUMERIC(5,2),
+    sf_abdomen      NUMERIC(5,2),
+    sf_thigh        NUMERIC(5,2),
+    sf_calf_med     NUMERIC(5,2),
+    sf_lowerback    NUMERIC(5,2),
+    sf_biceps       NUMERIC(5,2),
+    body_fat_pct    NUMERIC(4,2),
+    lean_mass       NUMERIC(5,2),
+    fat_mass        NUMERIC(5,2),
+    notes           TEXT,
+    created         TIMESTAMP WITH TIME ZONE DEFAULT CURRENT_TIMESTAMP
+);
+
+CREATE INDEX IF NOT EXISTS idx_caliper_profile_date ON caliper_log(profile_id, date DESC);
+
+-- ── Nutrition Log ───────────────────────────────────────────────
+CREATE TABLE IF NOT EXISTS nutrition_log (
+    id          UUID PRIMARY KEY DEFAULT uuid_generate_v4(),
+    profile_id  UUID NOT NULL REFERENCES profiles(id) ON DELETE CASCADE,
+    date        DATE NOT NULL,
+    kcal        NUMERIC(7,2),
+    protein_g   NUMERIC(6,2),
+    fat_g       NUMERIC(6,2),
+    carbs_g     NUMERIC(6,2),
+    source      VARCHAR(20) DEFAULT 'csv',
+    created     TIMESTAMP WITH TIME ZONE DEFAULT CURRENT_TIMESTAMP
+);
+
+CREATE INDEX IF NOT EXISTS idx_nutrition_profile_date ON nutrition_log(profile_id, date DESC);
+
+-- ── Activity Log ────────────────────────────────────────────────
+CREATE TABLE IF NOT EXISTS activity_log (
+    id              UUID PRIMARY KEY DEFAULT uuid_generate_v4(),
+    profile_id      UUID NOT NULL REFERENCES profiles(id) ON DELETE CASCADE,
+    date            DATE NOT NULL,
+    start_time      TIME,
+    end_time        TIME,
+    activity_type   VARCHAR(50) NOT NULL,
+    duration_min    NUMERIC(6,2),
+    kcal_active     NUMERIC(7,2),
+    kcal_resting    NUMERIC(7,2),
+    hr_avg          NUMERIC(5,2),
+    hr_max          NUMERIC(5,2),
+    distance_km     NUMERIC(7,2),
+    rpe             INTEGER CHECK (rpe >= 1 AND rpe <= 10),
+    source          VARCHAR(20) DEFAULT 'manual',
+    notes           TEXT,
+    created         TIMESTAMP WITH TIME ZONE DEFAULT CURRENT_TIMESTAMP
+);
+
+CREATE INDEX IF NOT EXISTS idx_activity_profile_date ON activity_log(profile_id, date DESC);
+
+-- ── Photos ──────────────────────────────────────────────────────
+CREATE TABLE IF NOT EXISTS photos (
+    id          UUID PRIMARY KEY DEFAULT uuid_generate_v4(),
+    profile_id  UUID NOT NULL REFERENCES profiles(id) ON DELETE CASCADE,
+    date        DATE,
+    path        TEXT NOT NULL,
+    created     TIMESTAMP WITH TIME ZONE DEFAULT CURRENT_TIMESTAMP
+);
+
+CREATE INDEX IF NOT EXISTS idx_photos_profile_date ON photos(profile_id, date DESC);
+
+-- ================================================================
+-- AI TABLES
+-- ================================================================
+
+-- ── AI Insights ─────────────────────────────────────────────────
+CREATE TABLE IF NOT EXISTS ai_insights (
+    id          UUID PRIMARY KEY DEFAULT uuid_generate_v4(),
+    profile_id  UUID NOT NULL REFERENCES profiles(id) ON DELETE CASCADE,
+    scope       VARCHAR(50) NOT NULL,
+    content     TEXT NOT NULL,
+    created     TIMESTAMP WITH TIME ZONE DEFAULT CURRENT_TIMESTAMP
+);
+
+CREATE INDEX IF NOT EXISTS idx_ai_insights_profile_scope ON ai_insights(profile_id, scope, created DESC);
+
+-- ── AI Prompts ──────────────────────────────────────────────────
+CREATE TABLE IF NOT EXISTS ai_prompts (
+    id          UUID PRIMARY KEY DEFAULT uuid_generate_v4(),
+    name        VARCHAR(255) NOT NULL,
+    slug        VARCHAR(100) NOT NULL UNIQUE,
+    description TEXT,
+    template    TEXT NOT NULL,
+    active      BOOLEAN DEFAULT TRUE,
+    sort_order  INTEGER DEFAULT 0,
+    created     TIMESTAMP WITH TIME ZONE DEFAULT CURRENT_TIMESTAMP,
+    updated     TIMESTAMP WITH TIME ZONE DEFAULT CURRENT_TIMESTAMP
+);
+
+CREATE INDEX IF NOT EXISTS idx_ai_prompts_slug ON ai_prompts(slug);
+CREATE INDEX IF NOT EXISTS idx_ai_prompts_active_sort ON ai_prompts(active, sort_order);
+
+-- ================================================================
+-- TRIGGERS
+-- ================================================================
+
+-- Auto-update timestamp trigger for profiles
+CREATE OR REPLACE FUNCTION update_updated_timestamp()
+RETURNS TRIGGER AS $$
+BEGIN
+    NEW.updated = CURRENT_TIMESTAMP;
+    RETURN NEW;
+END;
+$$ LANGUAGE plpgsql;
+
+CREATE TRIGGER IF NOT EXISTS trigger_profiles_updated
+    BEFORE UPDATE ON profiles
+    FOR EACH ROW
+    EXECUTE FUNCTION update_updated_timestamp();
+
+CREATE TRIGGER IF NOT EXISTS trigger_ai_prompts_updated
+    BEFORE UPDATE ON ai_prompts
+    FOR EACH ROW
+    EXECUTE FUNCTION update_updated_timestamp();
+
+-- ================================================================
+-- COMMENTS (Documentation)
+-- ================================================================
+
+COMMENT ON TABLE profiles IS 'User profiles with auth, permissions, and tier system';
+COMMENT ON TABLE sessions IS 'Active auth tokens';
+COMMENT ON TABLE ai_usage IS 'Daily AI call tracking per profile';
+COMMENT ON TABLE weight_log IS 'Weight measurements';
+COMMENT ON TABLE circumference_log IS 'Body circumference measurements (8 points)';
+COMMENT ON TABLE caliper_log IS 'Skinfold measurements with body fat calculations';
+COMMENT ON TABLE nutrition_log IS 'Daily nutrition intake (calories + macros)';
+COMMENT ON TABLE activity_log IS 'Training sessions and activities';
+COMMENT ON TABLE photos IS 'Progress photos';
+COMMENT ON TABLE ai_insights IS 'AI-generated analysis results';
+COMMENT ON TABLE ai_prompts IS 'Configurable AI prompt templates';
+
+COMMENT ON COLUMN profiles.tier IS 'Subscription tier: free, basic, premium, selfhosted';
+COMMENT ON COLUMN profiles.trial_ends_at IS 'Trial expiration timestamp (14 days from registration)';
+COMMENT ON COLUMN profiles.tier_expires_at IS 'Paid tier expiration timestamp';
+COMMENT ON COLUMN profiles.invited_by IS 'Profile ID of inviter (for beta invitations)';

backend/startup.sh

@@ -0,0 +1,73 @@
+#!/bin/bash
+set -e
+
+echo "═══════════════════════════════════════════════════════════"
+echo "MITAI JINKENDO - Backend Startup (v9b)"
+echo "═══════════════════════════════════════════════════════════"
+
+# ── PostgreSQL Connection Check ───────────────────────────────
+echo ""
+echo "Checking PostgreSQL connection..."
+
+MAX_RETRIES=30
+RETRY_COUNT=0
+
+until PGPASSWORD=$DB_PASSWORD psql -h "$DB_HOST" -U "$DB_USER" -d "$DB_NAME" -c '\q' 2>/dev/null; do
+  RETRY_COUNT=$((RETRY_COUNT + 1))
+  if [ $RETRY_COUNT -ge $MAX_RETRIES ]; then
+    echo "✗ PostgreSQL not ready after ${MAX_RETRIES} attempts"
+    echo "  Exiting..."
+    exit 1
+  fi
+  echo "  Waiting for PostgreSQL... (attempt $RETRY_COUNT/$MAX_RETRIES)"
+  sleep 2
+done
+
+echo "✓ PostgreSQL ready"
+
+# ── Schema Initialization ──────────────────────────────────────
+echo ""
+echo "Checking database schema..."
+
+# Check if profiles table exists
+TABLE_EXISTS=$(PGPASSWORD=$DB_PASSWORD psql -h "$DB_HOST" -U "$DB_USER" -d "$DB_NAME" -tAc \
+  "SELECT COUNT(*) FROM information_schema.tables WHERE table_schema='public' AND table_name='profiles'")
+
+if [ "$TABLE_EXISTS" = "0" ]; then
+  echo "  Schema not found, initializing..."
+  PGPASSWORD=$DB_PASSWORD psql -h "$DB_HOST" -U "$DB_USER" -d "$DB_NAME" -f /app/schema.sql
+  echo "✓ Schema loaded from schema.sql"
+else
+  echo "✓ Schema already exists"
+fi
+
+# ── Auto-Migration (SQLite → PostgreSQL) ───────────────────────
+echo ""
+echo "Checking for SQLite data migration..."
+
+SQLITE_DB="/app/data/bodytrack.db"
+PROFILE_COUNT=$(PGPASSWORD=$DB_PASSWORD psql -h "$DB_HOST" -U "$DB_USER" -d "$DB_NAME" -tAc \
+  "SELECT COUNT(*) FROM profiles")
+
+if [ -f "$SQLITE_DB" ] && [ "$PROFILE_COUNT" = "0" ]; then
+  echo "  SQLite database found and PostgreSQL is empty"
+  echo "  Starting automatic migration..."
+  python /app/migrate_to_postgres.py
+  echo "✓ Migration completed"
+elif [ -f "$SQLITE_DB" ] && [ "$PROFILE_COUNT" != "0" ]; then
+  echo "⚠ SQLite DB exists but PostgreSQL already has $PROFILE_COUNT profiles"
+  echo "  Skipping migration (already migrated)"
+elif [ ! -f "$SQLITE_DB" ]; then
+  echo "✓ No SQLite database found (fresh install or already migrated)"
+else
+  echo "✓ No migration needed"
+fi
+
+# ── Start Application ──────────────────────────────────────────
+echo ""
+echo "═══════════════════════════════════════════════════════════"
+echo "Starting FastAPI application..."
+echo "═══════════════════════════════════════════════════════════"
+echo ""
+
+exec uvicorn main:app --host 0.0.0.0 --port 8000

docker-compose.dev-env.yml

@@ -1,24 +1,55 @@
 services:
+  postgres-dev:
+    image: postgres:16-alpine
+    container_name: dev-mitai-postgres
+    restart: unless-stopped
+    environment:
+      POSTGRES_DB: mitai_dev
+      POSTGRES_USER: mitai_dev
+      POSTGRES_PASSWORD: dev_password_change_me
+    volumes:
+      - mitai_dev_postgres_data:/var/lib/postgresql/data
+    ports:
+      - "127.0.0.1:5433:5432"
+    healthcheck:
+      test: ["CMD-SHELL", "pg_isready -U mitai_dev"]
+      interval: 10s
+      timeout: 5s
+      retries: 5
+
   backend:
     build: ./backend
     container_name: dev-mitai-api
     restart: unless-stopped
     ports:
       - "8099:8000"
+    depends_on:
+      postgres-dev:
+        condition: service_healthy
     volumes:
-      - bodytrack_bodytrack-data:/app/data
       - bodytrack_bodytrack-photos:/app/photos
     environment:
+      # Database
+      - DB_HOST=postgres-dev
+      - DB_PORT=5432
+      - DB_NAME=mitai_dev
+      - DB_USER=mitai_dev
+      - DB_PASSWORD=dev_password_change_me
+
+      # AI
       - OPENROUTER_API_KEY=${OPENROUTER_API_KEY}
       - OPENROUTER_MODEL=${OPENROUTER_MODEL:-anthropic/claude-sonnet-4}
       - ANTHROPIC_API_KEY=${ANTHROPIC_API_KEY}
+
+      # Email
       - SMTP_HOST=${SMTP_HOST}
       - SMTP_PORT=${SMTP_PORT:-587}
       - SMTP_USER=${SMTP_USER}
       - SMTP_PASS=${SMTP_PASS}
       - SMTP_FROM=${SMTP_FROM}
+
+      # App
       - APP_URL=${APP_URL_DEV:-https://dev.mitai.jinkendo.de}
-      - DATA_DIR=/app/data
       - PHOTOS_DIR=/app/photos
       - ALLOWED_ORIGINS=${ALLOWED_ORIGINS_DEV:-*}
       - ENVIRONMENT=development
@@ -33,7 +64,6 @@ services:
       - backend
 
 volumes:
-  bodytrack_bodytrack-data:
+  mitai_dev_postgres_data:
-    external: true
   bodytrack_bodytrack-photos:
     external: true

docker-compose.yml

@@ -1,24 +1,55 @@
 services:
+  postgres:
+    image: postgres:16-alpine
+    container_name: mitai-postgres
+    restart: unless-stopped
+    environment:
+      POSTGRES_DB: ${DB_NAME:-mitai}
+      POSTGRES_USER: ${DB_USER:-mitai}
+      POSTGRES_PASSWORD: ${DB_PASSWORD}
+    volumes:
+      - mitai_postgres_data:/var/lib/postgresql/data
+    ports:
+      - "127.0.0.1:5432:5432"
+    healthcheck:
+      test: ["CMD-SHELL", "pg_isready -U ${DB_USER:-mitai}"]
+      interval: 10s
+      timeout: 5s
+      retries: 5
+
   backend:
     build: ./backend
     container_name: mitai-api
     restart: unless-stopped
     ports:
       - "8002:8000"
+    depends_on:
+      postgres:
+        condition: service_healthy
     volumes:
-      - bodytrack_bodytrack-data:/app/data
       - bodytrack_bodytrack-photos:/app/photos
     environment:
+      # Database
+      - DB_HOST=${DB_HOST:-postgres}
+      - DB_PORT=${DB_PORT:-5432}
+      - DB_NAME=${DB_NAME:-mitai}
+      - DB_USER=${DB_USER:-mitai}
+      - DB_PASSWORD=${DB_PASSWORD}
+
+      # AI
       - OPENROUTER_API_KEY=${OPENROUTER_API_KEY}
       - OPENROUTER_MODEL=${OPENROUTER_MODEL:-anthropic/claude-sonnet-4}
       - ANTHROPIC_API_KEY=${ANTHROPIC_API_KEY}
+
+      # Email
       - SMTP_HOST=${SMTP_HOST}
       - SMTP_PORT=${SMTP_PORT:-587}
       - SMTP_USER=${SMTP_USER}
       - SMTP_PASS=${SMTP_PASS}
       - SMTP_FROM=${SMTP_FROM}
+
+      # App
       - APP_URL=${APP_URL}
-      - DATA_DIR=/app/data
       - PHOTOS_DIR=/app/photos
       - ALLOWED_ORIGINS=${ALLOWED_ORIGINS:-*}
       - ENVIRONMENT=production
@@ -33,7 +64,7 @@ services:
       - backend
 
 volumes:
-  bodytrack_bodytrack-data:
+  mitai_postgres_data:
-    external: true
+    name: mitai_postgres_data
   bodytrack_bodytrack-photos:
     external: true