{
  "$schema": "http://json-schema.org/draft-07/schema#",
  "$id": "bridge-plan-v1",
  "title": "Bridge Plan Schema",
  "description": "Schema for Claude Code → LM Studio bridge execution plans",
  "type": "object",
  "required": ["$schema", "id", "status", "context", "steps"],
  "properties": {
    "$schema": {
      "type": "string",
      "const": "bridge-plan-v1"
    },
    "id": {
      "type": "string",
      "pattern": "^plan_[a-z0-9_]+$",
      "description": "Unique plan identifier (e.g., plan_auth_refactor)"
    },
    "status": {
      "type": "string",
      "enum": ["pending", "in_progress", "completed", "failed"],
      "default": "pending"
    },
    "context": {
      "type": "object",
      "required": ["objective"],
      "properties": {
        "project": {
          "type": "string",
          "description": "Absolute path to project root"
        },
        "objective": {
          "type": "string",
          "description": "High-level description of what the plan achieves"
        },
        "constraints": {
          "type": "array",
          "items": {"type": "string"},
          "description": "Constraints or requirements for execution"
        },
        "files_context": {
          "type": "object",
          "additionalProperties": {
            "type": "string",
            "enum": ["LOAD", "REFERENCE"],
            "description": "LOAD = inject content, REFERENCE = mention path only"
          },
          "description": "Files to include in execution context"
        }
      }
    },
    "steps": {
      "type": "array",
      "minItems": 1,
      "items": {
        "type": "object",
        "required": ["id", "type", "description", "prompt"],
        "properties": {
          "id": {
            "type": "integer",
            "minimum": 1,
            "description": "Step number (1-indexed)"
          },
          "type": {
            "type": "string",
            "enum": ["analysis", "code_generation", "code_modification", "decision"],
            "description": "Type of task for this step"
          },
          "description": {
            "type": "string",
            "maxLength": 200,
            "description": "Short description of what this step does"
          },
          "prompt": {
            "type": "string",
            "description": "Full prompt to send to LM Studio"
          },
          "depends_on": {
            "type": "array",
            "items": {"type": "integer"},
            "default": [],
            "description": "Step IDs that must complete before this one"
          },
          "validation": {
            "type": "object",
            "properties": {
              "type": {
                "type": "string",
                "enum": ["json", "syntax_check", "contains_keys", "non_empty"],
                "description": "Validation method for step output"
              },
              "keys": {
                "type": "array",
                "items": {"type": "string"},
                "description": "Required keys for contains_keys validation"
              }
            },
            "required": ["type"]
          },
          "file_output": {
            "type": "string",
            "description": "Path to write output (relative to project root)"
          },
          "on_failure": {
            "type": "string",
            "enum": ["retry_with_context", "skip", "halt"],
            "default": "retry_with_context",
            "description": "Behavior when step fails validation"
          },
          "max_retries": {
            "type": "integer",
            "minimum": 0,
            "maximum": 5,
            "default": 2,
            "description": "Maximum retry attempts"
          }
        }
      }
    },
    "rollback_strategy": {
      "type": "string",
      "enum": ["revert_files", "none"],
      "default": "none",
      "description": "What to do on plan failure"
    }
  }
}