Init project

README.md

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+# Soul Diary
+
+## User Flow
+
+### Soul Diary Server
+
+```mermaid
+sequenceDiagram
+  actor user
+  participant client
+  participant server
+  Note over user,server: Registration
+  user->>server: Send username and password
+  server-->server: Register new user
+  Note over user,server: Authorization
+  user->>server: Send username and password
+  server->>client: Return access token
+  client-->client: Store access token
+  client-->client: Generate encryption key by username and password
+  Note over user,server: Push sense
+  user->>client: Enter sense data
+  client-->client: Encrypt sense data
+  client->>server: Send encrypted sense data
+  Note over user,server: Pull sense
+  user->>server: Ask sense data
+  server->>client: Send encrypted data
+  client-->client: Decrypt sense data
+  client->>user: Show sense data
+```