Session 2026-04-19: Navigation, Kompass, Übungsfortschritt

Routen-Navigation:
- POI-Marker: farbige Kreise mit Phosphor-Icons (wie Hauptkarte)
- Screensaver: Navi-Pfeil dreht sich via DeviceOrientationEvent (iOS+Android)
- Pfeil-Dämpfung: EMA α=0.12 mit Wrap-Around
- GPS-Distanz-Bug: Fortschritt nur wenn <500m zur Route
- fitBounds: User-Position nur wenn <20km von Route
- Screensaver: "zur Route" vs "verbleibend" kontextabhängig
- Richtungspfeile entlang Route (blau, max 7 Stück)
- Umkehren ins Route-Detail verschoben, Detail-Map rebuildet sich
- rk-header z-index:10 (Leaflet-Tiles liefen drüber)
- 2-Sek. Screensaver-Entsperrung

km-Tracking:
- route_walks Tabelle
- POST /api/routes/{id}/walked (≥50%)
- total_km = erstellte Routes + gelaufene route_walks
- Toast bei neuem Badge

Übungsfortschritt:
- exercise_progress + training_plan_progress Tabellen
- GET/POST /api/training/progress, /plan-progress, /suggestions
- uebungen.js: API-first + localStorage-Fallback + Auto-Migration
- Empfehlungs-Banner (regelbasiert)
- Toast bei "sitzt"

backend/database.py

@@ -177,6 +177,32 @@ def init_db():
             anz_bewertungen INTEGER DEFAULT 0,
             created_at  TEXT    NOT NULL DEFAULT (datetime('now'))
         );
+        CREATE TABLE IF NOT EXISTS route_walks (
+            id         INTEGER PRIMARY KEY AUTOINCREMENT,
+            user_id    INTEGER NOT NULL REFERENCES users(id) ON DELETE CASCADE,
+            route_id   INTEGER REFERENCES routes(id) ON DELETE SET NULL,
+            walked_km  REAL    NOT NULL,
+            walked_at  TEXT    NOT NULL DEFAULT (datetime('now'))
+        );
+        CREATE INDEX IF NOT EXISTS idx_route_walks_user ON route_walks(user_id);
+
+        CREATE TABLE IF NOT EXISTS exercise_progress (
+            id          INTEGER PRIMARY KEY AUTOINCREMENT,
+            user_id     INTEGER NOT NULL REFERENCES users(id) ON DELETE CASCADE,
+            exercise_id TEXT    NOT NULL,
+            status      TEXT,
+            updated_at  TEXT NOT NULL DEFAULT (datetime('now')),
+            UNIQUE(user_id, exercise_id)
+        );
+        CREATE INDEX IF NOT EXISTS idx_exercise_progress_user ON exercise_progress(user_id);
+
+        CREATE TABLE IF NOT EXISTS training_plan_progress (
+            user_id   INTEGER NOT NULL REFERENCES users(id) ON DELETE CASCADE,
+            item_key  TEXT    NOT NULL,
+            checked   INTEGER NOT NULL DEFAULT 1,
+            checked_at TEXT NOT NULL DEFAULT (datetime('now')),
+            PRIMARY KEY (user_id, item_key)
+        );
 
         -- GASSI-TREFFEN
         CREATE TABLE IF NOT EXISTS walks (
@@ -486,6 +512,16 @@ def _migrate(conn_factory):
         ("forum_threads", "thread_lat", "REAL"),
         ("forum_threads", "thread_lon", "REAL"),
         ("forum_threads", "thread_ort", "TEXT"),
+        # Referral (idempotent, falls try/except-Block oben fehlgeschlagen ist)
+        ("users", "referral_code", "TEXT"),
+        ("users", "referred_by",   "INTEGER"),
+        # Routen: Original-Werte für Gamification (bleiben nach Kürzen erhalten)
+        ("routes", "original_km",       "REAL"),
+        ("routes", "original_dauer_min","INTEGER"),
+        # Gamification: Streaks
+        ("users", "current_streak",    "INTEGER NOT NULL DEFAULT 0"),
+        ("users", "max_streak",        "INTEGER NOT NULL DEFAULT 0"),
+        ("users", "last_activity_date","TEXT"),
     ]
     with conn_factory() as conn:
         for table, column, col_type in migrations:
@@ -848,3 +884,16 @@ def _migrate(conn_factory):
             logger.info("Migration: referral_code + referred_by zu users hinzugefügt.")
         except Exception:
             pass
+
+        # Gamification: Badge-Tabelle
+        conn.executescript("""
+            CREATE TABLE IF NOT EXISTS user_badges (
+                id         INTEGER PRIMARY KEY AUTOINCREMENT,
+                user_id    INTEGER NOT NULL REFERENCES users(id) ON DELETE CASCADE,
+                badge_id   TEXT    NOT NULL,
+                earned_at  TEXT    NOT NULL DEFAULT (datetime('now')),
+                UNIQUE(user_id, badge_id)
+            );
+            CREATE INDEX IF NOT EXISTS idx_user_badges_user ON user_badges(user_id);
+        """)
+        logger.info("Migration: user_badges Tabelle bereit.")