ECC's core Node.js CLI and managed installers run on Windows, macOS, and Linux, but optional capabilities are not at full parity. Some continuous-learning, GAN, and orchestration paths still require Bash or Python; harnesses also expose different hook, agent, and skill APIs.

| Platform | Status | Current limitation | |---|---|---| | Linux | Supported core | Optional features may require Bash, Python, or provider-specific tools. | | macOS | Supported core | The standalone GAN shell path is not compatible with the system Bash 3.2 and currently has a score-parsing defect (#2674). | | Windows + WSL | Supported core | WSL follows the Linux paths; Windows host integrations still vary by harness. | | Windows native | Supported with limitations | Continuous-learning v2's observer daemon and memory-vault writes have open native-Windows defects (#2489, #2626). Shell-backed optional features require Git Bash/WSL or are unavailable. |

Treat stable, beta, experimental, and instruction-only below as capability statements, not marketing tiers.

| Harness | Status | Recommended distribution | Important limitation | |---|---|---|---| | Claude Code | Stable primary | Plugin or selective installer | The plugin advertises the installed catalog to the model; use a selective/manual profile when context footprint matters. Optional shell-backed skills are not portable to every OS. | | Codex | Supported native plugin | Codex marketplace plugin or repo config | Native hooks require an explicit trust decision and do not use Claude's hook profiles. The legacy sync is compatibility-only. | | Qoder | Supported native plugin | Local plugin directory in Qoder CLI or ZIP upload in Qoder IDE | Loads the canonical skills, agents, commands, and MCP config; only the reviewed SessionStart hook is enabled, and Node.js 18+ must be on the non-interactive PATH. | | Cursor | Beta project adapter | Selective installer into .cursor/ | Agent discovery varies by Cursor build; hook events use profile-gated dispatchers, but full Claude feature parity is not claimed. | | OpenCode | Beta built plugin | Build plugin, then selective installer | ECC ships a subset of the catalog; connect a provider and select a model in OpenCode (#2617). | | GitHub Copilot Chat | Instruction-only | Checked-in instructions and prompt files | ECC hooks are not adapted. | | GitHub Copilot CLI | Beta project adapter | --target copilot places skills, adapted agents, and converted rules in .github/ | ECC hooks and command shims are not installed by this target. | | Gemini, Zed, Antigravity, Qwen, Hermes, OpenClaw, Kimi, CodeBuddy, JoyCode | Experimental/minimal adapters | Harness-specific selective target | File placement and instruction portability are tested; full Claude feature parity is not claimed. |

<details> <summary><strong>Package manager detection</strong></summary>

The plugin automatically detects your preferred package manager (npm, pnpm, yarn, or bun) with the following priority:

1. Environment variable: CLAUDE_PACKAGE_MANAGER
2. Project config: .claude/package-manager.json
3. package.json: packageManager field
4. Lock file: Detection from package-lock.json, yarn.lock, pnpm-lock.yaml, or bun.lockb
5. Global config: ~/.claude/package-manager.json
6. Fallback: First available package manager

To set your preferred package manager:

# Via environment variable
export CLAUDE_PACKAGE_MANAGER=pnpm

# Via global config
node scripts/setup-package-manager.js --global pnpm

# Via project config
node scripts/setup-package-manager.js --project bun

# Detect current setting
node scripts/setup-package-manager.js --detect

Or use the /setup-pm command.

</details> <details> <summary><strong>Hook runtime controls (env vars)</strong></summary>

Use runtime flags to tune strictness or disable specific hooks temporarily:

# Hook strictness profile (default: standard)
export ECC_HOOK_PROFILE=standard

# Comma-separated hook IDs to disable
export ECC_DISABLED_HOOKS="pre:bash:tmux-reminder,post:edit:typecheck"

# Cap SessionStart additional context (default: 8000 chars)
export ECC_SESSION_START_MAX_CHARS=4000

# Disable SessionStart additional context entirely for low-context/local-model setups
export ECC_SESSION_START_CONTEXT=off

# Session-tmp retention window in days (default: 30).
# Set to 0, off, false, disabled, never, or none to keep all sessions (disable pruning).
export ECC_SESSION_RETENTION_DAYS=14

# Cap how many learned instincts SessionStart injects into context (default: 6)
export ECC_MAX_INJECTED_INSTINCTS=6

# Minimum confidence an instinct needs to be injected, 0-1 (default: 0.7)
export ECC_INSTINCT_CONFIDENCE_THRESHOLD=0.7

# SessionStart ranks injected instincts by confidence + project/stack relevance
# (default: 

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