sky form: clear timezone field on new place pick so TZ auto-redetects from coords — TDD

selectPlace + geolocation now zero out tzInput.value & tzHint before schedulePreview, so the existing `if (!tzInput.value && data.timezone)` backfill in schedulePreview's success path actually fires when the user changes location after a saved sky exists. Without the clear, the saved/previous TZ stayed pinned & the chart was recomputed against the wrong timezone. Fix mirrored across sky.html (Dashsky), _applet-my-sky.html (My Sky applet entry form), and _sky_overlay.html (PICK SKY in-room overlay). New FT MySkyTimezoneRefreshTest.test_changing_place_refreshes_auto_detected_timezone seeds a user w. saved Baltimore/America/New_York, mocks Nominatim + sky/preview to return Camarillo + America/Los_Angeles, picks the suggestion, and asserts the TZ field updates.

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

src/functional_tests/test_applet_my_sky.py

@@ -7,6 +7,8 @@ to their account (stored on the User model, independent of any game room).
 
 import json as _json
 import unittest
+import zoneinfo
+from datetime import datetime
 
 from selenium.webdriver.common.by import By
 
@@ -163,7 +165,7 @@ class MySkyAppletWheelTest(FunctionalTest):
         )
         self.gamer = User.objects.create(email="stargazer@test.io")
         self.gamer.sky_chart_data  = _CHART_FIXTURE
-        self.gamer.sky_birth_place = "Lindenwold, NJ, US"
+        self.gamer.sky_birth_place = "Baltimore, MD, US"
         self.gamer.save()
 
     # ── T3 ───────────────────────────────────────────────────────────────────
@@ -297,6 +299,79 @@ class MySkyAppletFormTest(FunctionalTest):
         ))
 
 
+class MySkyTimezoneRefreshTest(FunctionalTest):
+    """Selecting a new birth place must refresh the auto-detected timezone."""
+
+    def setUp(self):
+        super().setUp()
+        Applet.objects.get_or_create(
+            slug="my-sky",
+            defaults={"name": "My Sky", "grid_cols": 6, "grid_rows": 6, "context": "dashboard"},
+        )
+        self.gamer = User.objects.create(email="stargazer@test.io")
+        self.gamer.sky_chart_data  = _CHART_FIXTURE
+        self.gamer.sky_birth_place = "Baltimore, MD, US"
+        self.gamer.sky_birth_tz    = "America/New_York"
+        self.gamer.sky_birth_lat   = 39.2904
+        self.gamer.sky_birth_lon   = -76.6122
+        self.gamer.sky_birth_dt    = datetime(
+            1990, 6, 15, 12, 0, tzinfo=zoneinfo.ZoneInfo("UTC")
+        )
+        self.gamer.save()
+        self.sky_url = self.live_server_url + "/dashboard/sky/"
+
+    def test_changing_place_refreshes_auto_detected_timezone(self):
+        """Picking a new place via the suggestion dropdown must update the
+        timezone field to the new place's auto-detected TZ rather than sticking
+        on the previously saved value."""
+        self.create_pre_authenticated_session("stargazer@test.io")
+        self.browser.get(self.sky_url)
+
+        # 1. Initial state: TZ field shows the saved America/New_York
+        tz_input = self.wait_for(lambda: self.browser.find_element(By.ID, "id_nf_tz"))
+        self.assertEqual(tz_input.get_attribute("value"), "America/New_York")
+
+        # 2. Mock Nominatim search + sky/preview to return Camarillo / Pacific TZ
+        camarillo_chart = dict(_CHART_FIXTURE)
+        camarillo_chart["timezone"] = "America/Los_Angeles"
+        self.browser.execute_script("""
+            const NEW_CHART = """ + _json.dumps(camarillo_chart) + """;
+            window._origFetch = window.fetch;
+            window.fetch = function(url, opts) {
+                if (typeof url === 'string' && url.includes('nominatim.openstreetmap.org/search')) {
+                    return Promise.resolve({
+                        ok: true,
+                        json: () => Promise.resolve([{
+                            display_name: 'Camarillo, Ventura County, California, US',
+                            lat: '34.2176', lon: '-119.0384',
+                        }]),
+                    });
+                }
+                if (typeof url === 'string' && url.includes('/sky/preview')) {
+                    return Promise.resolve({
+                        ok: true,
+                        json: () => Promise.resolve(NEW_CHART),
+                    });
+                }
+                return window._origFetch(url, opts);
+            };
+        """)
+
+        # 3. Type into the place input → click first Nominatim suggestion
+        place_input = self.browser.find_element(By.ID, "id_nf_place")
+        place_input.clear()
+        place_input.send_keys("Cam")
+        suggestion = self.wait_for_slow(lambda: self.browser.find_element(
+            By.CSS_SELECTOR, ".sky-suggestion-item"
+        ))
+        suggestion.click()
+
+        # 4. After preview resolves, TZ field should show the new auto-detected TZ
+        self.wait_for(lambda: self.assertEqual(
+            tz_input.get_attribute("value"), "America/Los_Angeles"
+        ))
+
+
 class MySkyWheelConjunctionTest(FunctionalTest):
     """Tick lines, z-raise, and dual tooltip for conjunct planets."""
 

src/templates/apps/dashboard/_partials/_applet-my-sky.html

@@ -214,6 +214,8 @@
     placeInput.value = place.display_name;
     latInput.value   = parseFloat(place.lat).toFixed(4);
     lonInput.value   = parseFloat(place.lon).toFixed(4);
+    tzInput.value    = '';
+    tzHint.textContent = '';
     hideSuggestions();
     _saveForm();
     schedulePreview();
@@ -231,6 +233,8 @@
       (pos) => {
         latInput.value = pos.coords.latitude.toFixed(4);
         lonInput.value = pos.coords.longitude.toFixed(4);
+        tzInput.value  = '';
+        tzHint.textContent = '';
         fetch(
           `https://nominatim.openstreetmap.org/reverse?format=json&lat=${latInput.value}&lon=${lonInput.value}`,
           { headers: { 'User-Agent': USER_AGENT } }

src/templates/apps/dashboard/sky.html

@@ -184,6 +184,8 @@
     placeInput.value = place.display_name;
     latInput.value   = parseFloat(place.lat).toFixed(4);
     lonInput.value   = parseFloat(place.lon).toFixed(4);
+    tzInput.value    = '';
+    tzHint.textContent = '';
     hideSuggestions();
     schedulePreview();
   }
@@ -200,6 +202,8 @@
       (pos) => {
         latInput.value = pos.coords.latitude.toFixed(4);
         lonInput.value = pos.coords.longitude.toFixed(4);
+        tzInput.value  = '';
+        tzHint.textContent = '';
         fetch(`https://nominatim.openstreetmap.org/reverse?format=json&lat=${latInput.value}&lon=${lonInput.value}`, {
           headers: { 'User-Agent': USER_AGENT },
         })

src/templates/apps/gameboard/_partials/_sky_overlay.html

@@ -246,6 +246,8 @@
     placeInput.value = place.display_name;
     latInput.value   = parseFloat(place.lat).toFixed(4);
     lonInput.value   = parseFloat(place.lon).toFixed(4);
+    tzInput.value    = '';
+    tzHint.textContent = '';
     hideSuggestions();
     _saveForm();
     schedulePreview();
@@ -263,6 +265,8 @@
       (pos) => {
         latInput.value = pos.coords.latitude.toFixed(4);
         lonInput.value = pos.coords.longitude.toFixed(4);
+        tzInput.value  = '';
+        tzHint.textContent = '';
         fetch(`https://nominatim.openstreetmap.org/reverse?format=json&lat=${latInput.value}&lon=${lonInput.value}`, {
           headers: { 'User-Agent': USER_AGENT },
         })