fix(rules): add paths frontmatter to web rule pack (#2425)

Every other language pack (typescript, react, python, golang, vue, ...) scopes its rules with a paths: YAML frontmatter block, so Claude Code only loads them when matching files are in context. The 7 files in rules/web/ ship without frontmatter, and per the official rules-loading docs (https://code.claude.com/docs/en/memory) rules without a paths field load unconditionally into every session - ~15.5KB of always-on context even in projects with no frontend code.

Add the same frontmatter convention used by the react pack, scoped to web-facing file types (css/scss/sass/less/html/tsx/jsx/vue/svelte).

rules/web/coding-style.md

@@ -1,3 +1,15 @@
+---
+paths:
+  - "**/*.css"
+  - "**/*.scss"
+  - "**/*.sass"
+  - "**/*.less"
+  - "**/*.html"
+  - "**/*.tsx"
+  - "**/*.jsx"
+  - "**/*.vue"
+  - "**/*.svelte"
+---
 > This file extends [common/coding-style.md](../common/coding-style.md) with web-specific frontend content.
 
 # Web Coding Style

rules/web/design-quality.md

@@ -1,3 +1,15 @@
+---
+paths:
+  - "**/*.css"
+  - "**/*.scss"
+  - "**/*.sass"
+  - "**/*.less"
+  - "**/*.html"
+  - "**/*.tsx"
+  - "**/*.jsx"
+  - "**/*.vue"
+  - "**/*.svelte"
+---
 > This file extends [common/patterns.md](../common/patterns.md) with web-specific design-quality guidance.
 
 # Web Design Quality Standards

rules/web/hooks.md

@@ -1,3 +1,15 @@
+---
+paths:
+  - "**/*.css"
+  - "**/*.scss"
+  - "**/*.sass"
+  - "**/*.less"
+  - "**/*.html"
+  - "**/*.tsx"
+  - "**/*.jsx"
+  - "**/*.vue"
+  - "**/*.svelte"
+---
 > This file extends [common/hooks.md](../common/hooks.md) with web-specific hook recommendations.
 
 # Web Hooks

rules/web/patterns.md

@@ -1,3 +1,15 @@
+---
+paths:
+  - "**/*.css"
+  - "**/*.scss"
+  - "**/*.sass"
+  - "**/*.less"
+  - "**/*.html"
+  - "**/*.tsx"
+  - "**/*.jsx"
+  - "**/*.vue"
+  - "**/*.svelte"
+---
 > This file extends [common/patterns.md](../common/patterns.md) with web-specific patterns.
 
 # Web Patterns

rules/web/performance.md

@@ -1,3 +1,15 @@
+---
+paths:
+  - "**/*.css"
+  - "**/*.scss"
+  - "**/*.sass"
+  - "**/*.less"
+  - "**/*.html"
+  - "**/*.tsx"
+  - "**/*.jsx"
+  - "**/*.vue"
+  - "**/*.svelte"
+---
 > This file extends [common/performance.md](../common/performance.md) with web-specific performance content.
 
 # Web Performance Rules

rules/web/security.md

@@ -1,3 +1,15 @@
+---
+paths:
+  - "**/*.css"
+  - "**/*.scss"
+  - "**/*.sass"
+  - "**/*.less"
+  - "**/*.html"
+  - "**/*.tsx"
+  - "**/*.jsx"
+  - "**/*.vue"
+  - "**/*.svelte"
+---
 > This file extends [common/security.md](../common/security.md) with web-specific security content.
 
 # Web Security Rules

rules/web/testing.md

@@ -1,3 +1,15 @@
+---
+paths:
+  - "**/*.css"
+  - "**/*.scss"
+  - "**/*.sass"
+  - "**/*.less"
+  - "**/*.html"
+  - "**/*.tsx"
+  - "**/*.jsx"
+  - "**/*.vue"
+  - "**/*.svelte"
+---
 > This file extends [common/testing.md](../common/testing.md) with web-specific testing content.
 
 # Web Testing Rules