Updates Model Checker documentation

Updates the documentation to reflect the shift from a spreadsheet-based rule definition to the new Model Checker Application.

Explains how to access the application, create rules, and configure automations.

Also introduces the alternative TSV file format for programmatically generating rules or version controlling rules.

README.md

@@ -1,14 +1,13 @@
-# Speckle Checker
+# Model Checker
 
-Speckle Checker is an Automate function that validates Speckle objects against configurable rules defined in a
-spreadsheet. This approach provides a flexible way to implement quality checks without coding, making it accessible to
-all team members.
+Model Checker is an Automate function that validates Speckle objects against configurable rules. This approach provides
+a flexible way to implement quality checks and maintain consistent standards across projects.
 
 ## Overview
 
-The Checker function allows you to:
+The Model Checker allows you to:
 
-- Define validation rules in a spreadsheet
+- Define validation rules for your objects
 - Configure severity levels for issues
 - Check properties across different types of objects
 - Generate reports of validation results
@@ -16,39 +15,35 @@ The Checker function allows you to:
 
 ## Getting Started
 
-### 1. Prepare Your Rule Spreadsheet
+### 1. Access the Model Checker Application
 
-1. Access
-   the [template spreadsheet](https://docs.google.com/spreadsheets/d/1eB0RVuOXdjLyn4_GAPSahV05p1lqfSGQbH8WWijnkkA/edit?gid=0#gid=0)
-2. Use the Speckle menu to launch the Speckle sidebar and make a copy.
-3. Define your rules using the format explained below
-4. Publish your rules by clicking "Publish Rules". Copy the resultant URL.
+1. Go to the [Model Checker Application](https://model-checker.speckle.systems)
+2. Sign in with your Speckle account
+3. Create and manage your validation rules through the intuitive web interface
 
 ### 2. Create an Automation
 
 1. Go to your workspace project in [Speckle](https://app.speckle.systems/)
 2. Create a new Automation
-3. Select the Checker function
+3. Select the Model Checker function
 4. Configure the function:
-    - Paste your published rules URL
     - Set minimum severity level to report
     - Configure other options as needed
 5. Save and run your automation
 
 ## Rule Definition Format
 
-Rules are defined in a spreadsheet with the following columns:
+Rules are defined with the following components:
 
-| Rule Number | Logic | Property Name | Predicate    | Value     | Message              | Report Severity |
-|-------------|-------|---------------|--------------|-----------|----------------------|-----------------|
-| 1           | WHERE | category      | matches      | Walls     | Wall thickness check | ERROR           |
-| 1           | AND   | Width         | greater than | 200       |                      |                 |
-| 2           | WHERE | category      | matches      | Columns   | Column height check  | WARNING         |
-| 2           | AND   | height        | in range     | 2500,4000 |                      |                 |
+| Logic | Property Name | Predicate    | Value     | Message              | Report Severity |
+|-------|---------------|--------------|-----------|----------------------|-----------------|
+| WHERE | category      | matches      | Walls     | Wall thickness check | ERROR           |
+| CHECK | Width         | greater than | 200       |                      |                 |
+| WHERE | category      | matches      | Columns   | Column height check  | WARNING         |
+| AND   | height        | in range     | 2500,4000 |                      |                 |
 
-### Column Explanation
+### Component Explanation
 
-- **Rule Number**: Groups conditions that belong to the same rule
 - **Logic**: Defines how conditions are combined (WHERE, AND, CHECK)
 - **Property Name**: The object property or parameter to check
 - **Predicate**: Comparison operation (equals, greater than, etc.)
@@ -84,7 +79,7 @@ are reported as issues.
 
 ## Working with Object Properties
 
-The Checker understands properties in Speckle objects regardless of schema:
+The Model Checker understands properties in Speckle objects regardless of schema:
 
 - Direct properties: `category`, `name`, `id`
 - Nested properties: `parameters.WIDTH.value`
@@ -95,27 +90,41 @@ The Checker understands properties in Speckle objects regardless of schema:
 ### Wall Thickness Check
 
 ```
-Rule 1: WHERE category equals "Walls" AND width less than "200"
-Message: "Wall too thin - minimum thickness is 200mm"
+Rule: WHERE category equals "Walls" AND width less than "200"
+Message: "Walls must have width of at least 200."
 Severity: ERROR
 ```
 
 ### Door Naming Convention
 
 ```
-Rule 2: WHERE category equals "Doors" AND name is not like "^D\d{3}$"
-Message: "Door name must follow pattern D followed by 3 digits"
+Rule: WHERE category equals "Doors" AND name is not like "^D\d{3}$"
+Message: "All doors must have a name that follows the format "D" followed by three digits."
 Severity: WARNING
 ```
 
 ### Structural Column Height Range
 
 ```
-Rule 3: WHERE category equals "Columns" AND is_structural is true AND height not in range "2400,4000"
-Message: "Structural column height outside acceptable range (2400-4000mm)"
+Rule: WHERE category equals "Columns" AND is_structural is true AND height not in range "2400,4000"
+Message: "Structural columns must have a height between 2400 and 4000."
 Severity: ERROR
 ```
 
 ## Support
 
 For issues or questions, please let us know on the [Speckle Community Forum](https://speckle.community/).
+
+### Alternative: TSV File Format
+
+While the Model Checker Application is the recommended way to create and manage rules, you can also create compatible
+TSV (Tab-Separated Values) files manually. This can be useful for:
+
+- Programmatically generating rules
+- Version controlling rules in a text format
+- Integrating with existing workflows
+- Creating rules in bulk
+
+The TSV file should follow the same structure as shown in the table above, with columns separated by tabs. The file will
+then need to be hosted somewhere and served with MIME-type of `text/tab-separated-values` and the URL used in the
+automation configuration.