feat(web): add @memoh/icon package and unify brand icon system

Replace FontAwesome/CDN brand icons with local SVG-based Vue components
in a new shared @memoh/icon package. Provider icon URLs in conf/providers
YAML files are replaced with preset names, intercepted by ProviderIcon
component on the frontend. SearchProviderLogo and ChannelIcon components
are migrated to @memoh/icon. All icon containers now use a unified
circular gray (rounded-full bg-muted) style. Adds wechat and matrix
channel icons.

conf/providers/anthropic.yaml

@@ -1,6 +1,6 @@
 name: Anthropic
 client_type: anthropic-messages
-icon: https://cdn.jsdelivr.net/npm/@lobehub/icons-static-svg@1/icons/anthropic.svg
+icon: anthropic
 base_url: https://api.anthropic.com
 
 models:

conf/providers/deepseek.yaml

@@ -1,6 +1,6 @@
 name: DeepSeek
 client_type: openai-completions
-icon: https://cdn.jsdelivr.net/npm/@lobehub/icons-static-svg@1/icons/deepseek-color.svg
+icon: deepseek-color
 base_url: https://api.deepseek.com/v1
 
 models:

conf/providers/google.yaml

@@ -1,6 +1,6 @@
 name: Google
 client_type: google-generative-ai
-icon: https://cdn.jsdelivr.net/npm/@lobehub/icons-static-svg@1/icons/google-color.svg
+icon: google-color
 base_url: https://generativelanguage.googleapis.com/v1beta
 
 models:

conf/providers/groq.yaml

@@ -1,6 +1,6 @@
 name: Groq
 client_type: openai-completions
-icon: https://cdn.jsdelivr.net/npm/@lobehub/icons-static-svg@1/icons/groq.svg
+icon: groq
 base_url: https://api.groq.com/openai/v1
 
 models:

conf/providers/huggingface.yaml

@@ -1,6 +1,6 @@
 name: HuggingFace
 client_type: openai-completions
-icon: https://cdn.jsdelivr.net/npm/@lobehub/icons-static-svg@1/icons/huggingface-color.svg
+icon: huggingface-color
 base_url: https://router.huggingface.co/hf-inference/v1
 
 models:

conf/providers/lmstudio.yaml

@@ -1,6 +1,6 @@
 name: LM Studio
 client_type: openai-completions
-icon: https://cdn.jsdelivr.net/npm/@lobehub/icons-static-svg@1/icons/lmstudio.svg
+icon: lmstudio
 base_url: http://127.0.0.1:1234/v1
 
 models:

conf/providers/minimax.yaml

@@ -1,6 +1,6 @@
 name: Minimax
 client_type: openai-completions
-icon: https://cdn.jsdelivr.net/npm/@lobehub/icons-static-svg@1/icons/minimax-color.svg
+icon: minimax-color
 base_url: https://api.minimaxi.com/v1
 
 models:

conf/providers/mistral.yaml

@@ -1,6 +1,6 @@
 name: Mistral
 client_type: openai-completions
-icon: https://cdn.jsdelivr.net/npm/@lobehub/icons-static-svg@1/icons/mistral-color.svg
+icon: mistral-color
 base_url: https://api.mistral.ai/v1
 
 models:

conf/providers/moonshot.yaml

@@ -1,6 +1,6 @@
 name: Moonshot
 client_type: openai-completions
-icon: https://cdn.jsdelivr.net/npm/@lobehub/icons-static-svg@1/icons/moonshot.svg
+icon: moonshot
 base_url: https://api.moonshot.cn/v1
 
 models:

conf/providers/newapi.yaml

@@ -1,6 +1,6 @@
 name: New API
 client_type: openai-completions
-icon: https://cdn.jsdelivr.net/npm/@lobehub/icons-static-svg@1/icons/newapi-color.svg
+icon: newapi-color
 base_url: https://your.new-api-provider.com
 
 models:

conf/providers/ollama.yaml

@@ -1,6 +1,6 @@
 name: Ollama
 client_type: openai-completions
-icon: https://cdn.jsdelivr.net/npm/@lobehub/icons-static-svg@1/icons/ollama.svg
+icon: ollama
 base_url: http://127.0.0.1:11434/v1
 
 models:

conf/providers/openai.yaml

@@ -1,6 +1,6 @@
 name: OpenAI
 client_type: openai-responses
-icon: https://cdn.jsdelivr.net/npm/@lobehub/icons-static-svg@1/icons/openai.svg
+icon: openai
 base_url: https://api.openai.com/v1
 
 models:

conf/providers/openrouter.yaml

@@ -1,6 +1,6 @@
 name: OpenRouter
 client_type: openai-completions
-icon: https://cdn.jsdelivr.net/npm/@lobehub/icons-static-svg@1/icons/openrouter.svg
+icon: openrouter
 base_url: https://openrouter.ai/api/v1
 
 models:

conf/providers/qwen.yaml

@@ -1,6 +1,6 @@
 name: Aliyun Bailian
 client_type: openai-completions
-icon: https://cdn.jsdelivr.net/npm/@lobehub/icons-static-svg@1/icons/qwen-color.svg
+icon: qwen-color
 base_url: https://dashscope.aliyuncs.com/compatible-mode/v1
 
 models:

conf/providers/xai.yaml

@@ -1,6 +1,6 @@
 name: xAI (Grok)
 client_type: openai-completions
-icon: https://cdn.jsdelivr.net/npm/@lobehub/icons-static-svg@1/icons/xai.svg
+icon: xai
 base_url: https://api.x.ai/v1
 
 models: