feat(dashboard): add forward "what's next" signal + fix upcoming floor

The daily-file bill queue is a backward snapshot, so "upcoming" could only
resurface the latest past day (the 08-31 snapshot read as today's queue) and
there was no "what is scheduled next." leginfo bill status/history are
backward-only, so the genuine future-dated signal is the chambers' "upcoming
events" calendars.

- api.py: floor the "upcoming" view at *today* (not the DB max date) when no
  as_of is pinned; surface next_legislative_day + scheduled_events (next 7
  days) on /bills. Add _today_iso / _next_legislative_day / _scheduled_events,
  all degrading to a recess marker / [] (never 5xx).
- relational.py: schema v2 adds the scheduled_events table +
  store_scheduled_events (idempotent per-day refresh), load_scheduled_events,
  next_legislative_day.
- parsers.py: parse_events_page + classify_event_kind for the chamber events
  calendar; skip empty-title rows (decompose the <time> before the fallback).
- ingest.py + cli.py: --store-events lane (cache-first, recess-safe) that
  parses the calendar HTML into scheduled_events.
- sources.py + config.yaml: register assembly_events / senate_events
  (kind: events, empty_is_ok: true).
- run_ingest.sh: run the events lane after the daily-file lane as non-fatal
  (skippable via CALI_SCRAPER_SKIP_EVENTS=1); daily-file exit still gates cron.
- frontend: "Next legislative day" line + "What's next · next 7 days" band
  with honest recess empty states.
- DASHBOARD.md: document the forward signal + known limitations (leginfo
  backward-only gap, recess empty state, 08-31 snapshot is analysis-only).
- tests: 5 new API tests + 18 parse-events tests; 170 pass, 92% coverage.

scraper/sources.py

@@ -16,18 +16,33 @@ SENATE_PDF_RE = re.compile(
 
 @dataclass
 class SourcePlan:
-    source: str                  # "assembly_daily_file" | "senate_daily_file"
-    date: str                    # requested YYYY-MM-DD
-    kind: str                    # "html" | "pdf"
-    primary_url: str             # URL that is actually fetched
-    ext: str                     # cache extension ("html" | "pdf")
+    source: str                   # "assembly_daily_file" | "senate_daily_file"
+    date: str                     # requested YYYY-MM-DD
+    kind: str                     # "html" | "pdf" | "events"
+    primary_url: str              # URL that is actually fetched
+    ext: str                      # cache extension ("html" | "pdf")
     pdf_url: Optional[str] = None
-    as_of: Optional[str] = None      # date the live page itself represents
+    as_of: Optional[str] = None       # date the live page itself represents
     extra_urls: list = field(default_factory=list)
 
 
 def build_source_plan(name: str, date_iso: str, src_cfg: dict) -> SourcePlan:
     kind = src_cfg.get("kind")
+    if kind == "events":
+        # The chamber "upcoming events" calendar is a live HTML page (a
+        # forward-looking source, distinct from the daily file). Its URL is
+        # constant; the date only drives the cache key (the page may list
+        # future-dated events, none of which is the --date value itself).
+        url = src_cfg.get("url") or src_cfg.get("index_url")
+        return SourcePlan(
+             source=name,
+             date=date_iso,
+             kind="events",
+             primary_url=url,
+             ext="html",
+             as_of=date_iso,
+          )
+
     if kind == "html":
         # Assembly: constant URL, always the current live file.
         return SourcePlan(