Fix 656 lazy temporal answers: replace 'static historical fact' with source-attributed answers

- Updated perspective.md: require source citations in temporal answers
- Filed feature request #75 for BCE temporal tag support (tested 7 formats, all rejected)
- Built batch script to replace all 'Static historical fact' answers with proper
  source attribution (ancient text date + modern publication year)
- Fixed source date detection bug (modern books about ancient figures)
- Answers now cite attesting source and its date per document footnotes

.automate/continuous-improve.log

@@ -1030,3 +1030,11 @@ To https://gitea.home.everyonce.com/daniel/factbase-ancient-history.git
 
 [?25h
 status: UPDATED | Treaty of Kadesh | changes: Fixed duplicate H1 title; added "Physical Record" section covering original silver tablets (now lost), Hugo Winckler's 1906 discovery at Hattusa, and current location of Hittite tablets at the Ancient Orient Museum in Istanbul; added divine witnesses/curses clause to Terms; noted the informal nature of the treaty name (Kadesh not mentioned in text); added scholarly date variant (1258 BCE); noted post-treaty peace period enabling Ramesses II's building projects; added [^3] Wikipedia citation for new facts
+[main 71592a0] improve: Treaty of Kadesh
+ 2 files changed, 87 insertions(+)
+[2026-02-22 22:41:40] ✅ Committed: improve: Treaty of Kadesh
+[2026-02-22 22:41:40]   Done (52s) — UPDATED
+[2026-02-22 22:41:45] [10/66] Next up...
+[2026-02-22 22:41:45] ━━━ [Roman Roads] (11bfdd) reviews=0 garbage=0 ━━━
+[2026-02-22 22:41:45]   🧹 Bash cleanup applied
+[2026-02-22 22:41:45]   🔍 Enrichment + review pass