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261332dc50
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
1.5 KiB
1.5 KiB
description, alwaysApply
| description | alwaysApply |
|---|---|
| Core coding style rules: immutability, file organization, error handling, input validation | true |
Coding Style
Immutability (CRITICAL)
ALWAYS create new objects, NEVER mutate existing ones:
// Pseudocode
WRONG: modify(original, field, value) → changes original in-place
CORRECT: update(original, field, value) → returns new copy with change
Rationale: Immutable data prevents hidden side effects, makes debugging easier, and enables safe concurrency.
File Organization
MANY SMALL FILES > FEW LARGE FILES:
- High cohesion, low coupling
- 200-400 lines typical, 800 max
- Extract utilities from large modules
- Organize by feature/domain, not by type
Error Handling
ALWAYS handle errors comprehensively:
- Handle errors explicitly at every level
- Provide user-friendly error messages in UI-facing code
- Log detailed error context on the server side
- Never silently swallow errors
Input Validation
ALWAYS validate at system boundaries:
- Validate all user input before processing
- Use schema-based validation where available
- Fail fast with clear error messages
- Never trust external data (API responses, user input, file content)
Code Quality Checklist
Before marking work complete:
- Code is readable and well-named
- Functions are small (<50 lines)
- Files are focused (<800 lines)
- No deep nesting (>4 levels)
- Proper error handling
- No hardcoded values (use constants or config)
- No mutation (immutable patterns used)