Add date-time quick input (T-mode) feature, strengthen installation to not overwrite user's config.toml, and add a cold-start protection for FTB that "displays within the page ready / up to 6s grace period, then shows/hides according to actual status" (still rebuilds webview2 on upgrade).

server/tests/src/test_date_time_query.cpp

@@ -0,0 +1,57 @@
+#include "tests/includes/test_framework.h"
+#include "date-time/date_time_query.h"
+
+#include <array>
+
+namespace
+{
+SYSTEMTIME SampleTime()
+{
+    SYSTEMTIME value = {};
+    value.wYear = 2026;
+    value.wMonth = 8;
+    value.wDay = 8;
+    value.wDayOfWeek = 6;
+    value.wHour = 15;
+    value.wMinute = 4;
+    value.wSecond = 5;
+    return value;
+}
+} // namespace
+
+TEST_CASE(date_time_query_accepts_all_date_wake_words)
+{
+    const SYSTEMTIME now = SampleTime();
+    for (const char *keyword : std::array<const char *, 3>{"rq", "riqi", "date"})
+    {
+        const auto results = DateTimeQuery::Query(keyword, &now);
+        REQUIRE_EQ(results.size(), static_cast<size_t>(8));
+        REQUIRE_EQ(results[0].word, std::string("2026年8月8日"));
+        REQUIRE_EQ(results[1].word, std::string("2026-08-08"));
+        REQUIRE_EQ(results[5].word, std::string("二〇二六年八月八日"));
+        REQUIRE_EQ(results[7].word, std::string("2026年8月8日 星期六"));
+        REQUIRE(results[0].source == CandidateSource::Generated);
+    }
+}
+
+TEST_CASE(date_time_query_accepts_all_time_wake_words)
+{
+    const SYSTEMTIME now = SampleTime();
+    for (const char *keyword : std::array<const char *, 3>{"sj", "shijian", "time"})
+    {
+        const auto results = DateTimeQuery::Query(keyword, &now);
+        REQUIRE_EQ(results.size(), static_cast<size_t>(8));
+        REQUIRE_EQ(results[0].word, std::string("15:04:05"));
+        REQUIRE_EQ(results[1].word, std::string("15:04"));
+        REQUIRE_EQ(results[4].word, std::string("下午3:04:05"));
+        REQUIRE_EQ(results[7].word, std::string("2026-08-08 15:04:05"));
+    }
+}
+
+TEST_CASE(date_time_query_rejects_unknown_words_and_honors_limit)
+{
+    const SYSTEMTIME now = SampleTime();
+    REQUIRE(DateTimeQuery::Query("today", &now).empty());
+    REQUIRE(DateTimeQuery::Query("rq", &now, 0).empty());
+    REQUIRE_EQ(DateTimeQuery::Query("rq", &now, 3).size(), static_cast<size_t>(3));
+}