Implement Pravda: Truth Social to Discord relay service

- Add core modules: database (SQLite), media (ffmpeg), discord (webhook), poller (truthbrush), server (FastAPI)
- Support video transcoding to H.264/AAC with automatic size management
- Handle message splitting for Discord limits (2000 chars, 10 attachments)
- Include interactive buttons (Delete, View Raw, Original Post)
- Add Dockerfile with ffmpeg and entrypoint script
- Add Gitea Actions workflow for CI/CD
- Configure code style tools (black, ruff, mypy)
- Include basic unit tests

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

tests/test_discord.py

@@ -0,0 +1,60 @@
+"""Tests for the Discord module."""
+
+from src.discord import split_content, build_components
+
+
+def test_split_content_short() -> None:
+    """Test that short content is not split."""
+    content = "Hello, world!"
+    result = split_content(content)
+    assert len(result) == 1
+    assert result[0] == content
+
+
+def test_split_content_long() -> None:
+    """Test that long content is split correctly."""
+    content = "x" * 2500
+    result = split_content(content, max_length=2000)
+    assert len(result) == 2
+    assert "[Part 1/2]" in result[0]
+    assert "[Part 2/2]" in result[1]
+
+
+def test_split_content_preserves_newlines() -> None:
+    """Test that content is split on newlines when possible."""
+    content = "\n".join(["Line " + str(i) for i in range(100)])
+    result = split_content(content, max_length=500)
+    assert len(result) > 1
+    # Each part should have complete lines
+    for part in result:
+        assert "Line" in part
+
+
+def test_build_components() -> None:
+    """Test that components are built correctly."""
+    components = build_components(
+        post_url="https://truthsocial.com/@user/posts/123",
+        post_id="123",
+        raw_json='{"id": "123"}',
+    )
+
+    assert len(components) == 1
+    assert components[0]["type"] == 1  # Action Row
+
+    buttons = components[0]["components"]
+    assert len(buttons) == 3
+
+    # Delete button
+    assert buttons[0]["type"] == 2
+    assert buttons[0]["style"] == 4  # Danger
+    assert buttons[0]["label"] == "Delete"
+
+    # View Raw button
+    assert buttons[1]["type"] == 2
+    assert buttons[1]["style"] == 2  # Secondary
+    assert buttons[1]["label"] == "View Raw"
+
+    # Original Post button (link)
+    assert buttons[2]["type"] == 2
+    assert buttons[2]["style"] == 5  # Link
+    assert buttons[2]["url"] == "https://truthsocial.com/@user/posts/123"