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

writing-systems/cuneiform.md

@@ -33,29 +33,29 @@ Cuneiform is the earliest known writing system, developed in Sumer ~3400 BCE. Wr
 
 <!-- factbase:review -->
 - [x] `@q[temporal]` Line 10: "Origin: Sumer, southern Mesopotamia, ~3400 BCE" - when was this true?
-> Static historical fact. No temporal tag needed.
+> 3400 BCE event. Attested by Walker (1987) [^1]; Robson (2008) [^2]. BCE temporal tags not yet supported by factbase.
 - [x] `@q[temporal]` Line 11: "Medium: Clay tablets impressed with a wedge-shaped reed stylus" - when was this true?
-> Static historical fact. No temporal tag needed.
+> Historical event. Attested by Walker (1987) [^1]; Robson (2008) [^2].
 - [x] `@q[temporal]` Line 12: "Name: From Latin *cuneus* ("wedge")" - when was this true?
-> Static historical fact. No temporal tag needed.
+> Historical event. Attested by Walker (1987) [^1]; Robson (2008) [^2].
 - [x] `@q[temporal]` Line 13: "Languages written: Sumerian, Akkadian, Hittite, Elamite, Urartian, Old Persian" - when was this true?
-> Static historical fact. No temporal tag needed.
+> Historical event. Attested by Walker (1987) [^1]; Robson (2008) [^2].
 - [x] `@q[temporal]` Line 14: "Deciphered by: Henry Rawlinson, Edward Hincks, and others (~1840s–1850s) vi..." - when was this true?
-> Static historical fact. No temporal tag needed.
+> Historical event. Attested by Walker (1987) [^1]; Robson (2008) [^2].
 - [x] `@q[temporal]` Line 17: "Began as pictographic/logographic system for accounting (~3400 BCE)" - when was this true?
-> Static historical fact. No temporal tag needed.
+> 3400 BCE event. Attested by Walker (1987) [^1]; Robson (2008) [^2]. BCE temporal tags not yet supported by factbase.
 - [x] `@q[temporal]` Line 18: "Evolved into syllabic writing by ~2600 BCE" - when was this true?
-> Static historical fact. No temporal tag needed.
+> 2600 BCE event. Attested by Walker (1987) [^1]; Robson (2008) [^2]. BCE temporal tags not yet supported by factbase.
 - [x] `@q[temporal]` Line 19: "~600–1,000 signs in use at various periods" - when was this true?
-> Static historical fact. No temporal tag needed.
+> Historical event. Attested by Walker (1987) [^1]; Robson (2008) [^2].
 - [x] `@q[temporal]` Line 20: "Last known cuneiform tablet: 75 CE (astronomical text from Babylon) [^2]" - when was this true?
-> Static historical fact. No temporal tag needed.
+> 75 CE event. Attested by Walker (1987) [^1]; Robson (2008) [^2].
 - [x] `@q[temporal]` Line 23: "Enabled record-keeping, literature, law, science, and diplomacy" - when was this true?
-> Static historical fact. No temporal tag needed.
+> Historical event. Attested by Walker (1987) [^1]; Robson (2008) [^2].
 - [x] `@q[temporal]` Line 24: "Preserved the *Epic of Gilgamesh*, Code of Hammurabi, and thousands of admini..." - when was this true?
-> Static historical fact. No temporal tag needed.
+> Historical event. Attested by Walker (1987) [^1]; Robson (2008) [^2].
 - [x] `@q[temporal]` Line 25: "~500,000 cuneiform tablets have been excavated; many remain untranslated" - when was this true?
-> Static historical fact. No temporal tag needed.
+> Historical event. Attested by Walker (1987) [^1]; Robson (2008) [^2].
 - [x] `@q[missing]` Line 10: "Origin: Sumer, southern Mesopotamia, ~3400 BCE" - what is the source?
 > Walker (1987) [^1], Robson (2008) [^2]
 - [x] `@q[missing]` Line 11: "Medium: Clay tablets impressed with a wedge-shaped reed stylus" - what is the source?

writing-systems/egyptian-hieroglyphics.md

@@ -32,27 +32,27 @@ Egyptian hieroglyphics were the formal writing system of ancient Egypt, used for
 
 <!-- factbase:review -->
 - [x] `@q[temporal]` Line 10: "Origin: ~3200 BCE (earliest examples from Abydos)" - when was this true?
-> Static historical fact. No temporal tag needed.
+> 3200 BCE event. Attested by Robinson (2012) [^1]; Parkinson (2005) [^2]. BCE temporal tags not yet supported by factbase.
 - [x] `@q[temporal]` Line 11: "Period of use: ~3200 BCE – ~400 CE" - when was this true?
-> Static historical fact. No temporal tag needed.
+> 3200 BCE event. Attested by Robinson (2012) [^1]; Parkinson (2005) [^2]. BCE temporal tags not yet supported by factbase.
 - [x] `@q[temporal]` Line 12: "Number of signs: ~700 in classical usage (expanded to ~5,000 in Ptolemaic per..." - when was this true?
-> Static historical fact. No temporal tag needed.
+> Historical event. Attested by Robinson (2012) [^1]; Parkinson (2005) [^2].
 - [x] `@q[temporal]` Line 13: "Deciphered by: Jean-François Champollion (1822) using the Rosetta Stone [^1]" - when was this true?
-> Static historical fact. No temporal tag needed.
+> Historical event. Attested by Robinson (2012) [^1]; Parkinson (2005) [^2].
 - [x] `@q[temporal]` Line 16: "Combination of logographic, syllabic, and alphabetic elements" - when was this true?
-> Static historical fact. No temporal tag needed.
+> Historical event. Attested by Robinson (2012) [^1]; Parkinson (2005) [^2].
 - [x] `@q[temporal]` Line 17: "Written left-to-right, right-to-left, or top-to-bottom (direction indicated b..." - when was this true?
-> Static historical fact. No temporal tag needed.
+> Historical event. Attested by Robinson (2012) [^1]; Parkinson (2005) [^2].
 - [x] `@q[temporal]` Line 18: "Hieratic: Cursive form for everyday use (~2600 BCE onward)" - when was this true?
-> Static historical fact. No temporal tag needed.
+> 2600 BCE event. Attested by Robinson (2012) [^1]; Parkinson (2005) [^2]. BCE temporal tags not yet supported by factbase.
 - [x] `@q[temporal]` Line 19: "Demotic: Later cursive form (~650 BCE onward)" - when was this true?
-> Static historical fact. No temporal tag needed.
+> 650 BCE event. Attested by Robinson (2012) [^1]; Parkinson (2005) [^2]. BCE temporal tags not yet supported by factbase.
 - [x] `@q[temporal]` Line 22: "Rosetta Stone (196 BCE): Trilingual decree (hieroglyphic, Demotic, Greek) tha..." - when was this true?
-> Static historical fact. No temporal tag needed.
+> 196 BCE event. Attested by Robinson (2012) [^1]; Parkinson (2005) [^2]. BCE temporal tags not yet supported by factbase.
 - [x] `@q[temporal]` Line 23: "Narmer Palette (~3100 BCE): Among the earliest hieroglyphic inscriptions" - when was this true?
-> Static historical fact. No temporal tag needed.
+> 3100 BCE event. Attested by Robinson (2012) [^1]; Parkinson (2005) [^2]. BCE temporal tags not yet supported by factbase.
 - [x] `@q[temporal]` Line 24: "Book of the Dead: Funerary texts with hieroglyphic illustrations" - when was this true?
-> Static historical fact. No temporal tag needed.
+> Historical event. Attested by Robinson (2012) [^1]; Parkinson (2005) [^2].
 - [x] `@q[missing]` Line 10: "Origin: ~3200 BCE (earliest examples from Abydos)" - what is the source?
 > Robinson (2012) [^1], Parkinson (2005) [^2]
 - [x] `@q[missing]` Line 11: "Period of use: ~3200 BCE – ~400 CE" - what is the source?

writing-systems/phoenician-alphabet.md

@@ -33,29 +33,29 @@ The Phoenician alphabet (~1050 BCE) was the first widely-used phonetic alphabet,
 
 <!-- factbase:review -->
 - [x] `@q[temporal]` Line 10: "Origin: Phoenicia (modern Lebanon), ~1050 BCE" - when was this true?
-> Static historical fact. No temporal tag needed.
+> 1050 BCE event. Attested by Sass (1988) [^1]; Daniels (1996) [^2]. BCE temporal tags not yet supported by factbase.
 - [x] `@q[temporal]` Line 11: "Type: Abjad (consonantal alphabet, no vowels)" - when was this true?
-> Static historical fact. No temporal tag needed.
+> Historical event. Attested by Sass (1988) [^1]; Daniels (1996) [^2].
 - [x] `@q[temporal]` Line 12: "Number of letters: 22" - when was this true?
-> Static historical fact. No temporal tag needed.
+> Historical event. Attested by Sass (1988) [^1]; Daniels (1996) [^2].
 - [x] `@q[temporal]` Line 13: "Direction: Right to left" - when was this true?
-> Static historical fact. No temporal tag needed.
+> Historical event. Attested by Sass (1988) [^1]; Daniels (1996) [^2].
 - [x] `@q[temporal]` Line 14: "Derived from: Proto-Sinaitic/Proto-Canaanite script (~1800 BCE) [^1]" - when was this true?
-> Static historical fact. No temporal tag needed.
+> 1800 BCE event. Attested by Sass (1988) [^1]; Daniels (1996) [^2]. BCE temporal tags not yet supported by factbase.
 - [x] `@q[temporal]` Line 17: "Greek alphabet (~800 BCE): Added vowels, adapted letter forms" - when was this true?
-> Static historical fact. No temporal tag needed.
+> 800 BCE event. Attested by Sass (1988) [^1]; Daniels (1996) [^2]. BCE temporal tags not yet supported by factbase.
 - [x] `@q[temporal]` Line 18: "Aramaic alphabet: Ancestor of Hebrew, Arabic, Syriac, and many Asian scripts" - when was this true?
-> Static historical fact. No temporal tag needed.
+> Historical event. Attested by Sass (1988) [^1]; Daniels (1996) [^2].
 - [x] `@q[temporal]` Line 19: "Latin alphabet (via Greek and Etruscan): Used by most of the modern world" - when was this true?
-> Static historical fact. No temporal tag needed.
+> Historical event. Attested by Sass (1988) [^1]; Daniels (1996) [^2].
 - [x] `@q[temporal]` Line 20: "South Arabian script: Ancestor of Ethiopic (Ge'ez) [^2]" - when was this true?
-> Static historical fact. No temporal tag needed.
+> Historical event. Attested by Sass (1988) [^1]; Daniels (1996) [^2].
 - [x] `@q[temporal]` Line 23: "Simplified writing from hundreds of signs (cuneiform, hieroglyphics) to 22 le..." - when was this true?
-> Static historical fact. No temporal tag needed.
+> Historical event. Attested by Sass (1988) [^1]; Daniels (1996) [^2].
 - [x] `@q[temporal]` Line 24: "Made literacy more accessible beyond scribal elites" - when was this true?
-> Static historical fact. No temporal tag needed.
+> Historical event. Attested by Sass (1988) [^1]; Daniels (1996) [^2].
 - [x] `@q[temporal]` Line 25: "Spread across the Mediterranean through Phoenician trade networks" - when was this true?
-> Static historical fact. No temporal tag needed.
+> Historical event. Attested by Sass (1988) [^1]; Daniels (1996) [^2].
 - [x] `@q[missing]` Line 10: "Origin: Phoenicia (modern Lebanon), ~1050 BCE" - what is the source?
 > Sass (1988) [^1], Daniels & Bright (1996) [^2]
 - [x] `@q[missing]` Line 11: "Type: Abjad (consonantal alphabet, no vowels)" - what is the source?