content(timeline): grow world events dataset from 24 to ~120

[CraigBuckmaster]

Parent epic: #1808
Depends on: #1810, #1811, #1812

Goal

Grow the world events dataset from 24 to ~120 entries, distributed across the 17 eras. AI-generated, accuracy-audited per the established editorial standard.

Depends on

• Schema extension issue (must land first)
• Card display polish issue (so new entries with certainty markers render correctly)
• Accuracy auditor extension (so new entries are validated as they land)

Editorial standard

• 1–2 sentence summaries
• Factual, neutral tone
• No theological framing — these are context, not exegesis
• Each entry includes region (canonical), year, date_certainty, optional related_biblical_event_ids

Target distribution

Era	Span	Target	Notes
primeval	-4000..-2200	5	early civilizations, writing, bronze working
patriarch	-2200..-1800	6
exodus	-1800..-1400	8	Hyksos, New Kingdom Egypt, Mycenaean Greece
judges	-1400..-1050	10	Bronze Age collapse, Sea Peoples, Phoenicians
kingdom	-1050..-930	6
divided_kingdom	-930..-722	10	Assyrian rise, early Greek polis
prophets	-930..-586	10	overlaps allowed; tag with primary era
exile	-586..-538	6	Babylonian zenith, Persian rise
post-exilic	-538..-432	10	Greco-Persian Wars, Athens classical age
intertestamental	-432..-4	20	Alexander, Diadochi, Roman Republic, Maccabees
nt / life_of_christ	-4..30	8	Augustus → Tiberius, Roman Judea governors
early_church	30..46	4	Caligula, Claudius, AD 49 expulsion
pauline_mission	46..67	8	Nero, fire of Rome, AD 66 revolt
general_epistles / apocalyptic	45..96	5	Vespasian, Titus, Flavians, Domitian
Total		~116

Workflow

Split into 4 sub-batches, one PR per batch:

• 4a: primeval through judges (~30 entries) → feat/world-events-batch-1-primeval-judges
• 4b: kingdom through exile (~32 entries) → feat/world-events-batch-2-kingdom-exile
• 4c: post-exilic through intertestamental (~30 entries) → feat/world-events-batch-3-postexilic-intertestamental
• 4d: NT era (~25 entries) → feat/world-events-batch-4-nt-era

Each PR:

1. Generator script in /tmp/ writes new entries directly into content/meta/timelines.json::world_events[]
2. python3 _tools/schema_validator.py
3. python3 _tools/build_sqlite.py
4. python3 _tools/validate_sqlite.py
5. python3 _tools/accuracy_auditor.py (must pass — new tier covers world events)
6. Generator deleted
7. PR with the standard deploy checklist

Acceptance criteria (per sub-batch)

• All new entries pass schema validator
• All new entries pass accuracy auditor (no date drift, no theological language, no broken refs)
• Region distribution is reasonable (no single region dominates)
• At least 50% of new entries include 1+ related_biblical_event_ids (where defensible)
• CI green; PR merged to master

Out of scope

• Images on world events
• Cross-region narrative arcs / multi-event story threads
• Parallel-lane visualization (separate epic if pursued)
• World religions / philosophical movements (separate concept card)

Branch / commit hygiene

One branch per sub-batch. Commit prefix: content(timeline):. Each batch is its own PR for clean review and rollback.