Function normalizeStringEncodedJSONFields

internal/mcp/dispatch.go:209–233

normalizeStringEncodedJSONFields recursively walks a parsed JSON value, finds string-typed `fields` and `tags` properties, parses them as embedded JSON, and substitutes the native object/array. Additionally drops `implementation_notes` and `decision_log` from the parsed fields object — those entries

(v any)

// Strings that don't parse as JSON pass through unchanged — covers
// hand-written field values that happen to share a key name.
func normalizeStringEncodedJSONFields(v any) any {
	switch x := v.(type) {
	case map[string]any:
		for k, val := range x {
			if s, ok := val.(string); ok && (k == "fields" || k == "tags") {
				if parsed, ok := tryParseEmbeddedJSON(s); ok {
					if k == "fields" {
						parsed = stripDuplicatedFieldsKeys(parsed)
					}
					x[k] = parsed
					continue
				}
			}
			x[k] = normalizeStringEncodedJSONFields(val)
		}
		return x
	case []any:
		for i, val := range x {
			x[i] = normalizeStringEncodedJSONFields(val)
		}
		return x
	default:
		return v
	}
}

// stripDuplicatedFieldsKeys removes implementation_notes and
// decision_log from a parsed fields object. The server hydrates both