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>

docs/architecture.md

@@ -0,0 +1,82 @@
+# System Architecture — Legal Decision Assistant
+
+## Components
+
+```
+┌─────────────────────────────────────────────────────┐
+│                    Nautilus Server                    │
+│                  158.178.131.193                      │
+│                                                       │
+│  ┌──────────┐  ┌──────────┐  ┌──────────────────┐   │
+│  │ Coolify   │  │ Traefik  │  │ ezer-mishpati-web│   │
+│  │ (manage)  │  │ (proxy)  │  │ (upload UI)      │   │
+│  └──────────┘  └──────────┘  └──────────────────┘   │
+│                                                       │
+│  ┌──────────────────┐  ┌──────────────────────────┐  │
+│  │ PostgreSQL        │  │ Redis                     │  │
+│  │ + pgvector        │  │ (task queue)              │  │
+│  │ (legal-ai-postgres│  │ (legal-ai-redis)          │  │
+│  └──────────────────┘  └──────────────────────────┘  │
+│                                                       │
+│  ┌──────────┐  ┌──────────┐                          │
+│  │ Gitea    │  │ n8n      │                          │
+│  │ (code)   │  │ (automate│                          │
+│  └──────────┘  └──────────┘                          │
+│                                                       │
+│  ┌──────────────────────────────────────────────┐    │
+│  │ Claude Code (via SSH or API)                  │    │
+│  │ — Skills: legal-decision, legal-docx          │    │
+│  │ — MCP: postgres, n8n, cloudflare, chrome      │    │
+│  └──────────────────────────────────────────────┘    │
+└─────────────────────────────────────────────────────┘
+
+External:
+  ← Claude API (embeddings, analysis)
+  ← Cloudflare DNS (*.nautilus.marcusgroup.org)
+  ← User (Putty SSH / Browser)
+```
+
+## Data Flow
+
+```
+1. Document Upload
+   User → ezer-mishpati-web → file storage → n8n trigger
+   → classify document → store metadata in PostgreSQL
+   → generate embeddings → store in pgvector
+
+2. Decision Writing
+   Claude Code → read source materials from DB
+   → generate structure DOCX (12 blocks)
+   → write each block with appropriate model/parameters
+   → validate against block-schema
+   → export final DOCX
+
+3. Precedent Search (RAG)
+   Query → generate embedding → pgvector similarity search
+   → return relevant paragraphs/decisions
+   → Claude analyzes relevance → present to user
+```
+
+## Database Schema — 4 Layers
+
+### Layer 1: Core
+appeals, parties, panels, documents
+
+### Layer 2: Decision
+decisions, decision_blocks, decision_paragraphs, claims
+
+### Layer 3: Legal Knowledge
+case_law, case_law_citations, statutory_provisions, transition_phrases, lessons_learned
+
+### Layer 4: Semantic Search (RAG)
+document_embeddings, paragraph_embeddings, case_law_embeddings
+(all using pgvector vector(1536) columns)
+
+## Technology Choices
+- **Database**: PostgreSQL 15 + pgvector 0.8.1
+- **Embedding model**: TBD (Claude/OpenAI ada-002/local)
+- **Automation**: n8n (workflow engine)
+- **Code repository**: Gitea (self-hosted)
+- **Deployment**: Coolify (Docker management)
+- **Proxy**: Traefik v3.6 (auto-SSL)
+- **Frontend**: ezer-mishpati-web (static HTML + API)