refactor: rename command files for namespace consistency

BREAKING CHANGE: All generic command names now prefixed with plugin namespace.
See CHANGELOG.md v7.0.0 for complete rename map.

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

plugins/contract-validator/commands/cv-setup.md

@@ -0,0 +1,49 @@
+---
+description: Interactive setup wizard for contract-validator plugin
+---
+
+# /initial-setup - Contract-Validator Setup Wizard
+
+## Skills to Load
+- skills/visual-output.md
+- skills/mcp-tools-reference.md
+
+**Important:** This command uses Bash, Read, Write tools - NOT MCP tools (they work only after setup + restart).
+
+## Workflow
+
+1. **Display header** per `skills/visual-output.md`
+
+2. **Check Python version**:
+   ```bash
+   python3 --version
+   ```
+   Requires 3.10+. Stop if below.
+
+3. **Locate MCP server**:
+   - Installed: `~/.claude/plugins/marketplaces/leo-claude-mktplace/mcp-servers/contract-validator/`
+   - Source: `~/claude-plugins-work/mcp-servers/contract-validator/`
+
+4. **Check/create venv**:
+   ```bash
+   ls .venv/bin/python || (python3 -m venv .venv && .venv/bin/pip install -r requirements.txt)
+   ```
+
+5. **Verify MCP server**:
+   ```bash
+   .venv/bin/python -c "from mcp_server.server import ContractValidatorMCPServer; print('OK')"
+   ```
+
+6. **Display success** per `skills/visual-output.md`
+
+7. **Inform user**: Session restart required for MCP tools.
+
+## Post-Setup Commands
+
+- `/validate-contracts` - Full marketplace validation
+- `/check-agent` - Validate single agent
+- `/list-interfaces` - Show all plugin interfaces
+
+## No Configuration Required
+
+This plugin reads plugin manifests and README files directly - no credentials needed.