test: add test module for version bump verification

Author: DevelopmentCats

registry/testnamespace/modules/testmodule/README.md

@@ -0,0 +1,73 @@
+---
+display_name: "Test Module"
+description: "A test module for version bump verification"
+icon: "../../../../.icons/tool.svg"
+verified: false
+tags: ["test", "verification"]
+---
+
+# Test Module
+
+This module tests various version bump scenarios.
+
+## Usage
+
+Standard usage (source first):
+
+```tf
+module "standard" {
+  source  = "registry.coder.com/testnamespace/testmodule/coder"
+  version = "1.5.0"
+  
+  agent_id = coder_agent.main.id
+}
+```
+
+Version-first style (the bug case):
+
+```tf
+module "version_first" {
+  version = "1.5.0"
+  source  = "registry.coder.com/testnamespace/testmodule/coder"
+  
+  agent_id = coder_agent.main.id
+}
+```
+
+Module with multiple version fields:
+
+```tf
+module "multiple_versions" {
+  source  = "registry.coder.com/testnamespace/testmodule/coder"
+  version = "1.5.0"
+  
+  agent_id = coder_agent.main.id
+  tool_version = "2.0.0"
+  boundary_version = "3.0.0"
+  agentapi_version = "4.0.0"
+}
+```
+
+Different module (should NOT be updated):
+
+```tf
+module "other" {
+  source  = "registry.coder.com/other/module/coder"
+  version = "9.9.9"
+}
+```
+
+Multiple instances with different indentation:
+
+```tf
+module "two_space" {
+  source  = "registry.coder.com/testnamespace/testmodule/coder"
+  version = "1.5.0"
+}
+
+module "four_space" {
+    source  = "registry.coder.com/testnamespace/testmodule/coder"
+    version = "1.5.0"
+}
+```
+

registry/testnamespace/modules/testmodule/main.tf

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+terraform {
+  required_version = ">= 1.0"
+}
+
+resource "coder_agent" "test" {
+  os   = "linux"
+  arch = "amd64"
+}
+
+output "agent_id" {
+  value = coder_agent.test.id
+}
+