feat: add Cursor IDE support with pre-translated configs

Add complete .cursor/ directory with rules, agents, skills, commands,
and MCP config adapted for Cursor's format. This makes ecc-universal
a truly cross-IDE package supporting Claude Code, Cursor, and OpenCode.

- 27 rule files with YAML frontmatter (description, globs, alwaysApply)
- 13 agent files with full model IDs and readonly flags
- 30 skill directories (identical Agent Skills standard, no translation)
- 31 command files (5 multi-* stubbed for missing codeagent-wrapper)
- MCP config with Cursor env interpolation syntax
- README.md and MIGRATION.md documentation
- install.sh --target cursor flag for project-scoped installation
- package.json updated with .cursor/ in files and cursor keywords

.cursor/commands/verify.md

@@ -0,0 +1,59 @@
+# Verification Command
+
+Run comprehensive verification on current codebase state.
+
+## Instructions
+
+Execute verification in this exact order:
+
+1. **Build Check**
+   - Run the build command for this project
+   - If it fails, report errors and STOP
+
+2. **Type Check**
+   - Run TypeScript/type checker
+   - Report all errors with file:line
+
+3. **Lint Check**
+   - Run linter
+   - Report warnings and errors
+
+4. **Test Suite**
+   - Run all tests
+   - Report pass/fail count
+   - Report coverage percentage
+
+5. **Console.log Audit**
+   - Search for console.log in source files
+   - Report locations
+
+6. **Git Status**
+   - Show uncommitted changes
+   - Show files modified since last commit
+
+## Output
+
+Produce a concise verification report:
+
+```
+VERIFICATION: [PASS/FAIL]
+
+Build:    [OK/FAIL]
+Types:    [OK/X errors]
+Lint:     [OK/X issues]
+Tests:    [X/Y passed, Z% coverage]
+Secrets:  [OK/X found]
+Logs:     [OK/X console.logs]
+
+Ready for PR: [YES/NO]
+```
+
+If any critical issues, list them with fix suggestions.
+
+## Arguments
+
+$ARGUMENTS can be:
+- `quick` - Only build + types
+- `full` - All checks (default)
+- `pre-commit` - Checks relevant for commits
+- `pre-pr` - Full checks plus security scan