Add docs, scripts, skills, commands, and taskmaster config to repo

Includes:
- docs/: architecture, block-schema, migration-plan, product-specification
- scripts/: bidi_table, decompose-decisions, extract-claims, seed-knowledge, etc.
- skill-legal-decision/: SKILL.md + references + block-schema
- skill-legal-assistant/: SKILL.md
- skill-legal-docx/: SKILL.md + references
- .claude/commands/: bidi-table skill
- .taskmaster/: task config + PRDs
- .gitignore: exclude legacy/, kiryat-yearim/, node_modules/, memory/

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

.gitignore

@@ -1,8 +1,14 @@
 data/uploads/
 data/cases/
+data/training/
+data/exports/
 mcp-server/.venv/
 __pycache__/
 *.pyc
 .env
-data/training/
 *.egg-info/
+legacy/
+kiryat-yearim/
+continuation-prompt.md
+memory/
+node_modules/