feat: persist exact Week Ahead task times (Closes #1270)

tests/e2e/test_mobile_week_ahead_release.py

@@ -328,9 +328,18 @@ def test_release_artifact_plans_seven_touch_safe_mobile_dates(
             expect(start).to_have_value("09:00")
             expect(page.locator('[data-week-calendar-preview="issue:acme/mobile:41:"]')).to_have_text("10:00–10:45 · 45 min")
             expect(page.locator("#week-calendar-status")).to_contain_text("Planning around imported busy time")
-            for control in (start, page.locator("#back-to-week-review-from-calendar"), page.locator("#share-week-calendar")):
+            exact = page.locator('[data-week-calendar-exact="issue:acme/mobile:41:"]')
+            expect(exact).to_have_value("")
+            exact.fill("14:00")
+            expect(page.locator('[data-week-calendar-preview="issue:acme/mobile:41:"]')).to_have_text("14:00–14:45 · 45 min")
+            save_times = page.locator("#save-week-calendar-times")
+            for control in (start, exact, page.locator("#back-to-week-review-from-calendar"), save_times, page.locator("#share-week-calendar")):
                 bounds = control.bounding_box()
                 assert bounds and bounds["height"] >= 44
+            assert page.evaluate("document.documentElement.scrollWidth <= window.innerWidth")
+            save_times.click()
+            expect(page.locator("#week-calendar-status")).to_have_text("Exact task times saved to Week Ahead.")
+            assert saved[-1]["days"][0]["start_times"] == {"issue:acme/mobile:41:": "14:00"}
             page.locator("#back-to-week-review-from-calendar").click()
             expect(page.locator("#week-review")).to_be_visible()
             confirm.click()