fix(edu): read diary event times directly from DOM, drop 25 AJAX clicks

_collect_event_times re-clicked every a.event-link and waited ~3s per
event for a visible span.data, but the calendar embeds all times in
div.event-full-info[data-event-full-info-id] span.data already. The old
loop took ~109s for 25 events and collected 0 (original divs stay
sf-hidden), effectively hanging /diary. Now a single evaluate reads all
times (~3.7s), parsing HH:MM from p.date span.data.

edu_master/webinar-checker/checker.py

@@ -555,69 +555,40 @@ def _parse_calendar_html(table_html: str) -> tuple:
 
 
 async def _collect_event_times(page) -> dict:
-    """Click every calendar `a.event-link` and read the time from the AJAX popup.
+    """Read event times straight from the rendered calendar DOM.
 
-    The site shows event details only after a click fills the fancybox container
-    (`div.event-full-info span.data`). Returns {event_id: 'HH:MM'} for events
-    that have a date; events without one are simply skipped. A failed click on a
-    single event never breaks the whole diary parse.
+    The diary page embeds `div.event-full-info[data-event-full-info-id]`
+    containing `span.data` (e.g. "2026-09-02 16:30:00") for every event, so no
+    AJAX popup clicks are needed. Returns {event_id: 'HH:MM'} for events that
+    have a date; events without one are simply skipped.
     """
     times_by_id: dict[str, str] = {}
     try:
-        links = await page.query_selector_all('a.event-link')
+        raw_times = await page.evaluate(
+            """() => {
+                const out = {};
+                for (const div of document.querySelectorAll(
+                    'div.event-full-info[data-event-full-info-id]'
+                )) {
+                    const id = div.getAttribute('data-event-full-info-id');
+                    const date_span = div.querySelector('p.date span.data');
+                    if (id && date_span) {
+                        out[id] = date_span.textContent.trim();
+                    }
+                }
+                return out;
+            }"""
+        )
     except Exception as e:
-        logger.warning(f'Failed to list diary event links: {e}')
+        logger.warning(f'Failed to read diary event times from DOM: {e}')
         return times_by_id
 
-    for link in links:
-        event_id = None
-        event_deadline = time.monotonic() + 10
-        try:
-            event_id = await link.get_attribute('data-event-id')
-            if not event_id or event_id in times_by_id:
-                continue
-            await link.evaluate('(el) => el.click()')
-            await page.wait_for_selector(
-                f'div.event-full-info[data-event-full-info-id="{event_id}"] span.data',
-                timeout=3000,
-                state='visible',
-            )
-            if time.monotonic() > event_deadline:
-                break
-            time_text = await page.evaluate(
-                """(id) => {
-                    const nodes = document.querySelectorAll(
-                        'div.event-full-info[data-event-full-info-id="' + id + '"] span.data'
-                    );
-                    for (const el of nodes) {
-                        if (el.getClientRects().length > 0 || el.offsetParent !== null) {
-                            return el.textContent.trim();
-                        }
-                    }
-                    return null;
-                }""",
-                event_id,
-            )
-            if time_text:
-                m = re.search(r'(\d{1,2}:\d{2})', time_text)
-                if m:
-                    times_by_id[event_id] = m.group(1)
-        except Exception as e:
-            logger.debug(f'Failed to read time for diary event {event_id}: {e}')
-            if time.monotonic() > event_deadline:
-                break
-        finally:
-            # Close the fancybox popup (click the close button, else Escape).
-            closed = False
-            with contextlib.suppress(Exception):
-                close_btn = await page.query_selector('#fancybox-close')
-                if close_btn is not None:
-                    await close_btn.click(timeout=2000)
-                    closed = True
-            if not closed:
-                with contextlib.suppress(Exception):
-                    await page.keyboard.press('Escape')
-            await page.wait_for_timeout(150)
+    for event_id, time_text in (raw_times or {}).items():
+        if not time_text:
+            continue
+        m = re.search(r'(\d{1,2}:\d{2})', time_text)
+        if m:
+            times_by_id[event_id] = m.group(1)
 
     logger.info(f'Diary event times collected for {len(times_by_id)} events')
     return times_by_id