chore: bump standards-version signals and drift-check pin to 1.9.0 (#11)

Aligns this repo with the meta-repo's current MINOR (v1.9.x).

Two coupled changes:
1. Signal bump: standards-version 1.7.0 -> 1.9.0 across all
   SKILL.md, .mdc, AGENTS.md (where present), and CLAUDE.md
   (where present) files.
2. Workflow pin: drift-check@v1.<old> -> drift-check@v1.9.

Per Phase 2 Design Decision 1, drift-check consumers track explicit
MINOR for deliberate standards version awareness. Each MINOR
represents a meaningful standards revision; tool repos signal which
revision they are aligned with via the signal version, and consume
the matching action via explicit MINOR pin.

The actual purpose of this rollout is to align ecosystem signals
with current MINOR so the (now-active per DTD#12) stale-counts
checker is exercised against current standards, and so the
meta-repo's mode: all drift-check reads consistent versions across
the ecosystem.

Refs TMHSDigital/Developer-Tools-Directory#12.


Made-with: Cursor

Signed-off-by: TMHSDigital <154358121+TMHSDigital@users.noreply.github.com>

Author: TMHSDigital

.github/workflows/drift-check.yml

@@ -15,7 +15,7 @@ jobs:
       contents: read
     steps:
       - uses: actions/checkout@v6
-      - uses: TMHSDigital/Developer-Tools-Directory/.github/actions/drift-check@v1.7
+      - uses: TMHSDigital/Developer-Tools-Directory/.github/actions/drift-check@v1.9
         with:
           mode: self
           format: gh-summary

AGENTS.md

@@ -1,4 +1,4 @@
-<!-- standards-version: 1.7.0 -->
+<!-- standards-version: 1.9.0 -->
 
 # AGENTS.md
 

rules/csharp-unity-conventions.mdc

@@ -3,7 +3,7 @@ title: C# Unity conventions
 description: C# coding conventions for Unity development
 globs: ["**/*.cs"]
 alwaysApply: false
-standards-version: 1.7.0
+standards-version: 1.9.0
 ---
 
 # C# Unity conventions

rules/monobehaviour-lifecycle.mdc

@@ -3,7 +3,7 @@ title: MonoBehaviour lifecycle
 description: Correct usage of MonoBehaviour lifecycle methods
 globs: ["**/*.cs"]
 alwaysApply: true
-standards-version: 1.7.0
+standards-version: 1.9.0
 ---
 
 # MonoBehaviour lifecycle rules

rules/naming-conventions.mdc

@@ -3,7 +3,7 @@ title: Unity naming conventions
 description: Naming conventions for Unity C# code
 globs: ["**/*.cs"]
 alwaysApply: true
-standards-version: 1.7.0
+standards-version: 1.9.0
 ---
 
 # Unity naming conventions

rules/performance-rules.mdc

@@ -3,7 +3,7 @@ title: Performance rules
 description: Performance optimization rules for Unity
 globs: ["**/*.cs"]
 alwaysApply: true
-standards-version: 1.7.0
+standards-version: 1.9.0
 ---
 
 # Unity performance rules

rules/security-and-builds.mdc

@@ -3,7 +3,7 @@ title: Security and builds
 description: Security and build configuration rules
 globs: ["**/*.cs", "**/*.json", "**/*.asset"]
 alwaysApply: false
-standards-version: 1.7.0
+standards-version: 1.9.0
 ---
 
 # Security and build rules

rules/serialization-rules.mdc

@@ -3,7 +3,7 @@ title: Serialization rules
 description: Unity serialization best practices
 globs: ["**/*.cs"]
 alwaysApply: false
-standards-version: 1.7.0
+standards-version: 1.9.0
 ---
 
 # Unity serialization rules

rules/shader-conventions.mdc

@@ -3,7 +3,7 @@ title: Shader conventions
 description: Conventions for Unity shader development
 globs: ["**/*.shader", "**/*.hlsl", "**/*.cginc", "**/*.shadergraph"]
 alwaysApply: false
-standards-version: 1.7.0
+standards-version: 1.9.0
 ---
 
 # Shader conventions

rules/visual-scripting-conventions.mdc

@@ -3,7 +3,7 @@ title: Visual scripting conventions
 description: Best practices for Unity Visual Scripting
 globs: ["**/*.asset"]
 alwaysApply: false
-standards-version: 1.7.0
+standards-version: 1.9.0
 ---
 
 # Visual scripting conventions