Archive recent HKEX IPO targets

Request:
Use the project archivist workflow to update IPO target coverage for the most recent three-year window.

Changes:
- Add scripts/update_recent_ipo_list.py to discover HKEXnews annual new listing reports, archive XLSX sources, parse subscription-relevant IPO rows, and update SQLite plus snapshots.
- Add new_listing_report_entries to preserve annual report row-level evidence.
- Archive 2023-2026 Main Board new listing reports and 2024-2026 GEM new listing reports.
- Seed 290 report-backed IPO targets for 2023-06-15 through 2026-06-15, skipping 10 non-IPO rows without numeric offer prices.
- Refresh ipo_master, missing offering_terms fields, source_refs, ticker_sync_state, and sync_tasks.
- Add openpyxl as the XLSX parser dependency and document the archivist refresh flow.
- Limit sync summary output while keeping the full queue in SQLite and CSV snapshots.

Verification:
- Ran update_recent_ipo_list.py for 2023-06-15 to 2026-06-15 with as-of 2026-06-15T07:30:00Z.
- Parsed project Python scripts with ast.parse.
- Checked SQLite integrity and DB-to-snapshot row counts.
- Verified source_refs paths are repo-relative, files exist, and SHA-256 hashes match.
- Ran git diff --check and git diff --cached --check.
- Checked for Python cache and SQLite transient files.

Next useful context:
- ipo_master now has 293 tickers; new_listing_report_entries has 290 report-backed targets.
- Current sync queue has 2005 open tasks and 42 waiting_until_due tasks for deeper per-ticker archival stages.

schema/hk_ipo.schema.sql

@@ -70,6 +70,31 @@ CREATE TABLE IF NOT EXISTS price_performance (
   UNIQUE (ticker, stage)
 );
 
+CREATE TABLE IF NOT EXISTS new_listing_report_entries (
+  report_entry_id TEXT PRIMARY KEY,
+  ticker TEXT NOT NULL REFERENCES ipo_master(ticker),
+  report_year INTEGER NOT NULL,
+  board TEXT NOT NULL,
+  source_id TEXT NOT NULL,
+  company_name_en TEXT NOT NULL,
+  prospectus_date TEXT,
+  listing_date TEXT NOT NULL,
+  offer_price_hkd REAL,
+  funds_raised_hkd REAL,
+  subscription_ratio_times REAL,
+  market_cap_hkd REAL,
+  outstanding_shares_at_listing INTEGER,
+  listing_method TEXT,
+  industry_label TEXT,
+  place_of_incorporation TEXT,
+  sponsors TEXT,
+  reporting_accountants TEXT,
+  valuers TEXT,
+  data_as_of TEXT NOT NULL,
+  notes TEXT,
+  UNIQUE (ticker, report_year, board)
+);
+
 CREATE TABLE IF NOT EXISTS source_refs (
   source_id TEXT PRIMARY KEY,
   ticker TEXT NOT NULL REFERENCES ipo_master(ticker),