Files
everything-claude-code/.cursor/rules/common-performance.md
Affaan Mustafa d70bab85e3 feat: add Cursor, Codex, and OpenCode harnesses — maximize every AI coding tool
- AGENTS.md: universal cross-tool file read by Claude Code, Cursor, Codex, and OpenCode
- .cursor/: 15 hook events via hooks.json, 16 hook scripts with DRY adapter pattern,
  29 rules (9 common + 20 language-specific) with Cursor YAML frontmatter
- .codex/: reference config.toml, Codex-specific AGENTS.md supplement,
  10 skills ported to .agents/skills/ with openai.yaml metadata
- .opencode/: 3 new tools (format-code, lint-check, git-summary), 3 new hooks
  (shell.env, experimental.session.compacting, permission.ask), expanded instructions,
  version bumped to 1.6.0
- README: fixed Cursor section, added Codex section, added cross-tool parity table
- install.sh: now copies hooks.json + hooks/ for --target cursor
2026-02-25 10:45:29 -08:00

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1.7 KiB
Markdown

---
description: "Performance: model selection, context management, build troubleshooting"
alwaysApply: true
---
# Performance Optimization
## Model Selection Strategy
**Haiku 4.5** (90% of Sonnet capability, 3x cost savings):
- Lightweight agents with frequent invocation
- Pair programming and code generation
- Worker agents in multi-agent systems
**Sonnet 4.6** (Best coding model):
- Main development work
- Orchestrating multi-agent workflows
- Complex coding tasks
**Opus 4.5** (Deepest reasoning):
- Complex architectural decisions
- Maximum reasoning requirements
- Research and analysis tasks
## Context Window Management
Avoid last 20% of context window for:
- Large-scale refactoring
- Feature implementation spanning multiple files
- Debugging complex interactions
Lower context sensitivity tasks:
- Single-file edits
- Independent utility creation
- Documentation updates
- Simple bug fixes
## Extended Thinking + Plan Mode
Extended thinking is enabled by default, reserving up to 31,999 tokens for internal reasoning.
Control extended thinking via:
- **Toggle**: Option+T (macOS) / Alt+T (Windows/Linux)
- **Config**: Set `alwaysThinkingEnabled` in `~/.claude/settings.json`
- **Budget cap**: `export MAX_THINKING_TOKENS=10000`
- **Verbose mode**: Ctrl+O to see thinking output
For complex tasks requiring deep reasoning:
1. Ensure extended thinking is enabled (on by default)
2. Enable **Plan Mode** for structured approach
3. Use multiple critique rounds for thorough analysis
4. Use split role sub-agents for diverse perspectives
## Build Troubleshooting
If build fails:
1. Use **build-error-resolver** agent
2. Analyze error messages
3. Fix incrementally
4. Verify after each fix