corezoid-variable-manager

# Corezoid Variable Manager ## What variables are Environment variables store constants (URLs, tokens, API keys, IDs, configuration values) that must not be hardcoded in process logic. The reference syntax `{{env_var[@name]}}` is resolved at runtime — changing a variable value takes effect immediately without redeploying any process. Variables are **stage-scoped**: shared across all processes within a stage. --- ## Variable types ### By data type | `data_type` | When to use | Value format | |-------------|-------------|--------------| | `raw` | Plain string (URL, token, ID, any scalar) | `"https://api.example.com"` | | `json` | Structured config, multi-field config, feature flags | `{"key":"value","nested":{...}}` | ### By visibility | `env_var_type` | UI display | Accessible from | Scopes | |----------------|------------|-----------------|--------| | `visible` | Value shown in plain text | All node types | `[{"type":"*","fields":"*"}]` | | `secret` | Value masked, shows only fingerprint | API Call nodes only | `[{"type":"api_call","fields":"*"}]` | > ⚠️ **Secret variables** are designed for tokens, passwords, and API keys. They are > never returned in plain text by the API after creation — only an MD5/SHA256 fingerprint > is available. Use `visible` for non-sensitive configuration. --- ## MCP Tools | Tool | Purpose | |------|---------| | `create-variable` | Create a `raw` + `visible` variable in one step | | `list-variables` | List a stage's variables with obj_i...