feat(core): initialize project structure, postgres schema and docker setup

db/models.py

@@ -0,0 +1,51 @@
+from dataclasses import dataclass, field
+from typing import Optional, List
+
+@dataclass
+class SourceChannel:
+    id: Optional[int]
+    channel_id: int
+    username: Optional[str]
+    title: Optional[str]
+    is_active: bool = True
+    created_at: Optional[str] = None
+
+@dataclass
+class TargetChannel:
+    id: Optional[int]
+    channel_id: int
+    title: Optional[str]
+    username: Optional[str]
+    post_interval_min: int = 30
+    last_post_time: Optional[str] = None
+    is_active: bool = True
+    created_at: Optional[str] = None
+
+@dataclass
+class Post:
+    id: Optional[int]
+    source_channel_id: int
+    source_message_id: int
+    raw_text: Optional[str]
+    media_path: Optional[str] = None
+    media_type: Optional[str] = None
+    content_hash: Optional[str] = None
+    tags: List[str] = field(default_factory=list)
+    is_duplicate: bool = False
+    duplicate_of_id: Optional[int] = None
+    similarity_reason: Optional[str] = None
+    subject: Optional[str] = None
+    ai_text: Optional[str] = None
+    suggested_target_id: Optional[int] = None
+    target_channel_id: Optional[int] = None
+    status: str = "pending_ai"  # pending_ai, pending_review, approved, scheduled, published, rejected
+    review_message_id: Optional[int] = None
+    scheduled_at: Optional[str] = None
+    published_at: Optional[str] = None
+    created_at: Optional[str] = None
+
+@dataclass
+class Setting:
+    key: str
+    value: str
+    description: Optional[str] = None