refactor: extract apply_applet_toggle, rooms_for_user & natus helpers to utils; DRY toggle views

- epic/utils.py (new): _planet_house, _compute_distinctions, rooms_for_user
- applets/utils.py: apply_applet_toggle replaces 5 copy-pasted toggle loops
- dashboard/views.py: use apply_applet_toggle; fix double free_tokens/tithe_tokens query in wallet(); promote _compute_distinctions import to module level
- gameboard/views.py: use apply_applet_toggle & rooms_for_user; fix double free_tokens query in toggle_game_applets
- billboard/views.py: use apply_applet_toggle & rooms_for_user
- SCSS: %tt-token-fields placeholder in _tooltips.scss; _gameboard & _game-kit @extend it
- epic/tests/unit/test_utils.py (new): coverage for _planet_house fallback path

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

src/apps/epic/utils.py

@@ -0,0 +1,41 @@
+from django.db.models import Q
+
+from apps.epic.models import Room, RoomInvite
+
+
+def _planet_house(degree, cusps):
+    """Return 1-based house number for a planet at ecliptic degree.
+
+    cusps is the 12-element list from PySwiss where cusps[i] is the start of
+    house i+1. Handles the wrap-around case where a cusp crosses 0°/360°.
+    """
+    degree = degree % 360
+    for i in range(12):
+        start = cusps[i] % 360
+        end   = cusps[(i + 1) % 12] % 360
+        if start < end:
+            if start <= degree < end:
+                return i + 1
+        else:  # wrap-around: e.g. cusp at 350° → next at 10°
+            if degree >= start or degree < end:
+                return i + 1
+    return 1
+
+
+def _compute_distinctions(planets, houses):
+    """Return dict {house_number_str: planet_count} for all 12 houses."""
+    cusps = houses['cusps']
+    counts = {str(i): 0 for i in range(1, 13)}
+    for planet_data in planets.values():
+        h = _planet_house(planet_data['degree'], cusps)
+        counts[str(h)] += 1
+    return counts
+
+
+def rooms_for_user(user):
+    """Return a queryset of rooms the user owns, has a gate slot in, or is invited to."""
+    return Room.objects.filter(
+        Q(owner=user) |
+        Q(gate_slots__gamer=user) |
+        Q(invites__invitee_email=user.email, invites__status=RoomInvite.PENDING)
+    ).distinct()