tray sig-card tooltip: portal w. PRV|NXT pager — TDD

Phase 2 of the apps.tooltips integration on the tray. Hovering
.tray-sig-card > .sig-stage-card opens #id_tooltip_portal w. an FYI panel
that mirrors #id_fan_fyi_panel (Energy / Operation entries cycled via
PRV|NXT), but w.o. the stage block, w.o. Reversal entries, & w.o. the fan
stage's click-to-dismiss handler — the panel-body click is reserved for
future drag-and-drop on .tray-sig-card:active.

- _partials/_sig_fyi_panel.html — new partial, the .sig-info + PRV|NXT
  block extracted out of game_kit.html, _sig_select_overlay.html, &
  _sea_overlay.html. {% include %}d back from those 3 callers; pure
  copy-paste extraction (no behavioural change to fan stage, sig select,
  or sea select).
- room.html: .tray-sig-card > .sig-stage-card gains data-energies +
  data-operations (the only attrs StageCard.buildInfoData reads), keyed
  off my_tray_sig.energies_json / .operations_json (existing TarotCard
  properties).
- tray-tooltip.js: new sig branch — _showSig() builds the panel inline,
  paints via StageCard.renderFyi, & wires PRV|NXT cycle handlers; the
  mousemove union now covers the .fyi-prev / .fyi-next btn rects (the
  btns hang past the portal's left & right edges) so mouse-over them
  keeps the panel alive. Click stopPropagation on the btns prevents the
  panel-body click from reaching anything else.
- TrayTooltipSpec: 6 new sig-branch specs (panel structure; first energy
  entry rendered; PRV|NXT cycling; body click no-dismiss; pointer over
  btn rects keeps panel alive; pointer outside full union clears).
- test_component_tray_tooltip.py: 4 sig FTs (hover populates portal w.
  Energy/TESTLIBIDO/effect/1-of-2; PRV|NXT cycle; body click does NOT
  dismiss; mouseleave clears).

FT helper note — the sig FT's _hover dispatches a synthetic mouseenter
via JS rather than ActionChains.move_to_element, because the role-card
& sig-card cells sit side-by-side in the tray grid: the pointer's
animated path crosses the role-card on its way to the sig-card &
opens the role tooltip mid-flight, which then occludes the sig stage
by the time the move lands. Direct dispatch lands the event on the
intended trigger w.o. the cross-cell drag-by.

313 epic ITs + 335 Jasmine specs (incl. 6 new) + 6 tray-tooltip FTs all
green.

Code architected by Disco DeDisco <discodedisco@outlook.com>
Git commit message Co-Authored-By:
Claude Opus 4.7 (1M context) <noreply@anthropic.com>

src/templates/apps/gameboard/room.html

@@ -101,12 +101,14 @@
                     <i class="fa-solid fa-dice-d20"></i>
                 </button>
             </div>
-            <div id="id_tray" style="display:none"><div id="id_tray_grid" data-role-icons-url="{% static 'apps/epic/icons/cards-roles/' %}">{% if my_tray_role %}<div class="tray-cell tray-role-card" data-role="{{ my_tray_role }}"><img src="{% static my_tray_scrawl_static_path %}" alt="{{ my_tray_role }}">{% tooltip my_tray_role_tooltip %}</div>{% else %}<div class="tray-cell"></div>{% endif %}{% if my_tray_sig %}<div class="tray-cell tray-sig-card"><div class="sig-stage-card sea-sig-card" aria-label="{{ my_tray_sig.name }}"><span class="fan-corner-rank">{{ my_tray_sig.corner_rank }}</span>{% if my_tray_sig.suit_icon %}<i class="fa-solid {{ my_tray_sig.suit_icon }}"></i>{% endif %}</div></div>{% else %}<div class="tray-cell"></div>{% endif %}{% for i in "345678" %}<div class="tray-cell"></div>{% endfor %}</div></div>
+            <div id="id_tray" style="display:none"><div id="id_tray_grid" data-role-icons-url="{% static 'apps/epic/icons/cards-roles/' %}">{% if my_tray_role %}<div class="tray-cell tray-role-card" data-role="{{ my_tray_role }}"><img src="{% static my_tray_scrawl_static_path %}" alt="{{ my_tray_role }}">{% tooltip my_tray_role_tooltip %}</div>{% else %}<div class="tray-cell"></div>{% endif %}{% if my_tray_sig %}<div class="tray-cell tray-sig-card"><div class="sig-stage-card sea-sig-card" aria-label="{{ my_tray_sig.name }}" data-energies="{{ my_tray_sig.energies_json }}" data-operations="{{ my_tray_sig.operations_json }}"><span class="fan-corner-rank">{{ my_tray_sig.corner_rank }}</span>{% if my_tray_sig.suit_icon %}<i class="fa-solid {{ my_tray_sig.suit_icon }}"></i>{% endif %}</div></div>{% else %}<div class="tray-cell"></div>{% endif %}{% for i in "345678" %}<div class="tray-cell"></div>{% endfor %}</div></div>
         </div>
         {% endif %}
-        {# Tray-tooltip portal — sibling of the tray so it sits at room-page root,
-           not inside the tray's overflow:hidden / mask-image clip. JS populates
-           innerHTML on hover of .tray-role-card > img (and Phase 2: sig card). #}
+        {% comment %}
+            Tray-tooltip portal — sibling of the tray so it sits at room-page root,
+            not inside the tray's overflow:hidden / mask-image clip. JS populates
+            innerHTML on hover of .tray-role-card > img (and Phase 2: sig card).
+        {% endcomment %}
         {% if room.table_status %}
             <div id="id_tooltip_portal" class="tt" style="display:none;"></div>
         {% endif %}