my-sea gear NVM: gatekeeper + picker nav-back to table hex instead of ejecting to gameboard — TDD

User-spec'd 2026-05-26: the gear menu's NVM was always nav-backing to /gameboard/ from every my-sea state, which ejects the user one step further than they want when bailing on the gatekeeper or the spread/crucifix picker. Both should nav-back to the my-sea TABLE HEX (the landing) — one step back, not all the way out.

## templates/apps/gameboard/_partials/_my_sea_gear.html

Now takes an optional `nvm_url` context variable; falls back to `{% url 'gameboard' %}` when unset. The onclick handler reads `{{ nvm_url }}` so callers can override per-page.

## templates/apps/gameboard/my_sea.html

```
{% if show_picker %}{% url 'my_sea' as nvm_url %}{% endif %}
{% include "apps/gameboard/_partials/_my_sea_gear.html" %}
```

Picker phase → nvm_url = my_sea landing (table hex). Sign-gate + landing phases fall through to the default (gameboard) — landing's NVM = "back out of my-sea entirely", which is the existing behaviour.

## templates/apps/gameboard/my_sea_gate.html

```
{% url 'my_sea' as nvm_url %}
{% include "apps/gameboard/_partials/_my_sea_gear.html" %}
```

Gatekeeper unconditionally nav-backs to the my-sea landing.

## Tests

`apps/gameboard/tests/integrated/test_views.py`:
- `MySeaViewTest.test_gear_nvm_navs_to_gameboard_on_landing_phase` — landing NVM still goes to /gameboard/ (regression guard).
- `MySeaViewTest.test_gear_nvm_navs_to_my_sea_landing_on_picker_phase` — picker NVM goes to /gameboard/my-sea/ (seeds a non-empty hand to trigger show_picker per views.py:277's `hand_non_empty or (phase_param and show_paid_draw)` logic).
- `MySeaGateViewTest.test_gear_nvm_navs_to_my_sea_landing_not_gameboard` — gatekeeper NVM goes to /gameboard/my-sea/ (and explicitly NOT /gameboard/).

## Verification

All 1364 IT+UT green. No FTs assert the gear-menu NVM target URL (per pre-change grep) so no test fixes required there.

Code architected by Disco DeDisco <discodedisco@outlook.com>
Git commit message Co-Authored-By:
Claude Sonnet 4.6 <noreply@anthropic.com>

src/apps/gameboard/tests/integrated/test_views.py

@@ -1037,6 +1037,31 @@ class MySeaViewTest(TestCase):
         self.assertIn('id="id_bud_btn"', body)
         self.assertIn('id="id_burger_btn"', body)
 
+    def test_gear_nvm_navs_to_gameboard_on_landing_phase(self):
+        """Landing-phase NVM = "back out of my-sea entirely" → /gameboard/."""
+        response = self.client.get(reverse("my_sea"))
+        self.assertIn("location.href='/gameboard/'", response.content.decode())
+
+    def test_gear_nvm_navs_to_my_sea_landing_on_picker_phase(self):
+        """Picker-phase NVM = "back out of the spread to the table hex" →
+        /gameboard/my-sea/ (the landing). User-spec'd 2026-05-26 so the
+        spread/crucifix exit doesn't eject all the way to /gameboard/.
+        Picker phase triggers on a non-empty hand (see views.py:277)."""
+        from apps.epic.models import personal_sig_cards, TarotCard
+        from apps.gameboard.models import MySeaDraw
+        sig = personal_sig_cards(self.user)[0]
+        self.user.significator = sig
+        self.user.save(update_fields=["significator"])
+        card = TarotCard.objects.exclude(pk=sig.pk).first()
+        MySeaDraw.objects.create(
+            user=self.user, spread="situation-action-outcome",
+            significator_id=sig.id,
+            hand=[{"position": "lay", "card_id": card.id,
+                   "reversed": False, "polarity": "gravity"}],
+        )
+        response = self.client.get(reverse("my_sea"))
+        self.assertIn("location.href='/gameboard/my-sea/'", response.content.decode())
+
     def test_sea_stage_stat_block_renders_rank_suit_chip_per_face(self):
         """Sprint A.7.5 — `_sea_stage.html` modal scaffold (included from
         my_sea-picker-phase + the gameroom sea overlay) carries the new
@@ -2189,6 +2214,15 @@ class MySeaGateViewTest(TestCase):
         self.assertContains(response, "id_my_sea_paid_draw_btn")
         self.assertContains(response, reverse("my_sea_refund_token"))
 
+    def test_gear_nvm_navs_to_my_sea_landing_not_gameboard(self):
+        """Gatekeeper NVM = "back out of the gate to the table hex" →
+        /gameboard/my-sea/ (the landing), NOT /gameboard/. User-spec'd
+        2026-05-26 so the gatekeeper exit lands one step back."""
+        response = self.client.get(reverse("my_sea_gate"))
+        body = response.content.decode()
+        self.assertIn("location.href='/gameboard/my-sea/'", body)
+        self.assertNotIn("location.href='/gameboard/'", body)
+
     def test_gate_view_renders_burger_btn_and_fan(self):
         response = self.client.get(reverse("my_sea_gate"))
         self.assertContains(response, 'id="id_burger_btn"')