feat(marketplace): command consolidation + 8 new plugins (v8.1.0 → v9.0.0) [BREAKING]

Phase 1b: Rename all ~94 commands across 12 plugins to /<noun> <action>
sub-command pattern. Git-flow consolidated from 8→5 commands (commit
variants absorbed into --push/--merge/--sync flags). Dispatch files,
name: frontmatter, and cross-reference updates for all plugins.

Phase 2: Design documents for 8 new plugins in docs/designs/.

Phase 3: Scaffold 8 new plugins — saas-api-platform, saas-db-migrate,
saas-react-platform, saas-test-pilot, data-seed, ops-release-manager,
ops-deploy-pipeline, debug-mcp. Each with plugin.json, commands, agents,
skills, README, and claude-md-integration. Marketplace grows from 12→20.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

plugins/data-seed/skills/schema-inference.md

@@ -0,0 +1,81 @@
+---
+name: schema-inference
+description: Infer data types, constraints, and relationships from ORM models or raw SQL DDL
+---
+
+# Schema Inference
+
+## Purpose
+
+Parse and normalize schema definitions from multiple ORM dialects into a unified internal representation. This skill enables data generation and validation commands to work across SQLAlchemy, Prisma, Django ORM, and raw SQL DDL without dialect-specific logic in every command.
+
+---
+
+## Supported Schema Sources
+
+| Source | Detection | File Patterns |
+|--------|-----------|---------------|
+| SQLAlchemy | `from sqlalchemy import`, `Column(`, `mapped_column(` | `models.py`, `models/*.py` |
+| Prisma | `model` blocks with `@id`, `@relation` | `prisma/schema.prisma` |
+| Django ORM | `from django.db import models`, `models.CharField` | `models.py` with Django imports |
+| Raw SQL DDL | `CREATE TABLE` statements | `*.sql`, `schema.sql`, `migrations/*.sql` |
+| JSON Schema | `"type": "object"`, `"properties":` | `*.schema.json` |
+
+## Type Normalization
+
+Map dialect-specific types to a canonical set:
+
+| Canonical Type | SQLAlchemy | Prisma | Django | SQL |
+|----------------|------------|--------|--------|-----|
+| `string` | `String(N)`, `Text` | `String` | `CharField`, `TextField` | `VARCHAR(N)`, `TEXT` |
+| `integer` | `Integer`, `BigInteger`, `SmallInteger` | `Int`, `BigInt` | `IntegerField`, `BigIntegerField` | `INT`, `BIGINT`, `SMALLINT` |
+| `float` | `Float`, `Numeric` | `Float` | `FloatField` | `FLOAT`, `REAL`, `DOUBLE` |
+| `decimal` | `Numeric(P,S)` | `Decimal` | `DecimalField` | `DECIMAL(P,S)`, `NUMERIC(P,S)` |
+| `boolean` | `Boolean` | `Boolean` | `BooleanField` | `BOOLEAN`, `BIT` |
+| `datetime` | `DateTime` | `DateTime` | `DateTimeField` | `TIMESTAMP`, `DATETIME` |
+| `date` | `Date` | `DateTime` | `DateField` | `DATE` |
+| `uuid` | `UUID` | `String @default(uuid())` | `UUIDField` | `UUID` |
+| `json` | `JSON` | `Json` | `JSONField` | `JSON`, `JSONB` |
+| `enum` | `Enum(...)` | `enum` block | `choices=` | `ENUM(...)`, `CHECK IN (...)` |
+
+## Constraint Extraction
+
+For each column, extract:
+- **nullable**: Whether NULL values are allowed (default: true unless PK or explicit NOT NULL)
+- **unique**: Whether values must be unique
+- **max_length**: For string types, the maximum character length
+- **precision/scale**: For decimal types
+- **default**: Default value expression
+- **check**: CHECK constraint expressions (e.g., `age >= 0`)
+- **primary_key**: Whether this column is part of the primary key
+
+## Relationship Extraction
+
+Identify foreign key relationships:
+- **parent_table**: The referenced table
+- **parent_column**: The referenced column (usually PK)
+- **on_delete**: CASCADE, SET NULL, RESTRICT, NO ACTION
+- **self_referential**: True if FK references same table
+- **many_to_many**: Detected from junction/through tables with two FKs and no additional non-FK columns
+
+## Output Format
+
+Internal representation used by other skills:
+
+```json
+{
+  "tables": {
+    "users": {
+      "columns": {
+        "id": {"type": "integer", "primary_key": true, "nullable": false},
+        "email": {"type": "string", "max_length": 255, "unique": true, "nullable": false},
+        "name": {"type": "string", "max_length": 100, "nullable": false},
+        "manager_id": {"type": "integer", "nullable": true, "foreign_key": {"table": "users", "column": "id"}}
+      },
+      "relationships": [
+        {"type": "self_referential", "column": "manager_id", "references": "users.id"}
+      ]
+    }
+  }
+}
+```