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.

content/posts/blog-transfer-complete.md

@@ -0,0 +1,40 @@
+---
+id: d45ebe08-3f81-474f-a284-93170d866f5a
+slug: blog-transfer-complete
+title: 博文转移完毕
+summary: ""
+status: published
+tags: []
+cover: ""
+version: 1
+slug_source: manual
+slug_locked: true
+published_at: "2023-02-24T00:56:03+08:00"
+created_at: "2023-02-24T00:56:03+08:00"
+updated_at: "2026-01-07T18:11:03+08:00"
+---
+
+由于之前的博客存储在了 sqlite3 数据库里，显然是没办法直接导入 Hexo 所识别的格式的，所以用 python 写了
+一个小脚本，方便博文的转移。
+
+```python
+import sqlite3
+from datetime import datetime
+conn = sqlite3.connect("Hsunr.db")
+cursor = conn.cursor()
+
+cursor.execute('select * from post')
+values = cursor.fetchall()
+for item in values:
+    file_name = "{}-{}.md".format(item[5],item[1].replace(' ','-'))
+    dt_obj = datetime.strptime(item[0], '%Y%m%d%H%M%S')
+    content = "---\\n" \\
+              "title: {}\\n" \\
+              "date: {}\\n" \\
+              "tags:\\n" \\
+              "categories: {}\\n" \\
+              "---\\n"\\
+              "{}".format(item[1],dt_obj,item[3],item[2])
+    f = open(file_name,'w');
+    f.write(content)
+```