📦 deps(thirdparty): update snapshots

antigravity-awesome-skills/skills/postgres-readonly-queries/README.md

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+# postgres
+
+Read-only PostgreSQL query skill. Query multiple databases safely with write protection.
+
+## Setup
+
+1. Copy the example config:
+```bash
+cp connections.example.json connections.json
+```
+
+2. Add your database credentials:
+```json
+{
+  "databases": [
+    {
+      "name": "prod",
+      "description": "Production - users, orders, transactions",
+      "host": "db.example.com",
+      "port": 5432,
+      "database": "app_prod",
+      "user": "readonly",
+      "password": "secret",
+      "sslmode": "require"
+    }
+  ]
+}
+```
+
+3. Secure the config:
+```bash
+chmod 600 connections.json
+```
+
+## Usage
+
+```bash
+# List configured databases
+python3 scripts/query.py --list
+
+# List tables
+python3 scripts/query.py --db prod --tables
+
+# Show schema
+python3 scripts/query.py --db prod --schema
+
+# Run query
+python3 scripts/query.py --db prod --query "SELECT * FROM users" --limit 100
+```
+
+## Config Fields
+
+| Field | Required | Default | Description |
+|-------|----------|---------|-------------|
+| name | Yes | - | Database identifier |
+| description | Yes | - | What data it contains (for auto-selection) |
+| host | Yes | - | Hostname |
+| port | No | 5432 | Port |
+| database | Yes | - | Database name |
+| user | Yes | - | Username |
+| password | Yes | - | Password |
+| sslmode | No | prefer | disable, allow, prefer, require, verify-ca, verify-full |
+
+## Safety Features
+
+- **Read-only sessions**: PostgreSQL `readonly=True` mode blocks writes at database level
+- **Query validation**: Only SELECT, SHOW, EXPLAIN, WITH allowed
+- **Single statement**: No multi-statement queries (prevents `SELECT 1; DROP TABLE`)
+- **Timeouts**: 30s query timeout, 10s connection timeout
+- **Memory cap**: Max 10,000 rows per query
+- **Credential protection**: Passwords sanitized from error messages
+
+## Requirements
+
+```bash
+pip install psycopg2-binary
+```