feat: add admin publishing workflow and yar theme

Add Go/Postgres admin APIs, Angular admin UI, manual build flow, asset uploads, markdown import/export, configurable slug generation, and the Yar reading theme. Exclude local docs and generated development artifacts from version control.

config/local.example.yaml

@@ -3,8 +3,18 @@ database:
   sqlite_path: ".osaet/osaet.db"
   postgres_dsn: ""
 
+slug:
+  provider: "deepseek" # deepseek | local
+
 deepseek:
   api_key: ""
   api_key_env: "DEEPSEEK_API_KEY"
   base_url: "https://api.deepseek.com"
   model: "deepseek-v4-pro"
+
+local_llm:
+  url: "http://127.0.0.1:11434/api/generate"
+  model: "qwen2.5:7b-instruct-q4_K_M"
+  temperature: 0.1
+  top_p: 0.8
+  num_predict: 32

config/site.yaml

@@ -4,11 +4,12 @@ meta:
   updated_by: "cli"
 
 site:
-  title: "Osaet"
-  description: "Personal blog"
+  title: "冯梦华的日常"
+  description: "Yarnom'Blog"
   base_url: "http://localhost:4321"
   language: "zh-CN"
   timezone: "Asia/Shanghai"
+  theme: "yar"
 
 content:
   posts_dir: "content/posts"