docs: add AI series production and ComfyUI handbook

.gitignore

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+# Generated video and audio
+*.mp4
+*.mov
+*.mkv
+*.webm
+*.avi
+*.m4v
+*.gif
+*.wav
+*.mp3
+*.flac
+*.aac
+*.m4a
+*.ogg
+*.opus
+
+# Model weights and generated media directories
+*.safetensors
+*.ckpt
+*.pt
+*.pth
+*.bin
+*.onnx
+*.gguf
+models/
+output/
+outputs/
+temp/
+tmp/
+
+# Runtime environments and caches
+.venv/
+venv/
+env/
+__pycache__/
+*.py[cod]
+.cache/
+.pytest_cache/
+.mypy_cache/
+.ruff_cache/
+node_modules/
+
+# Local credentials and secrets
+.env
+.env.*
+!.env.example
+!.env.sample
+secrets.json
+secrets.*.json
+credentials.json
+credentials.*.json
+*.pem
+*.key
+*.p12
+*.pfx
+
+# Temporary logs and operating-system files
+*.log
+*.tmp
+*.bak
+.DS_Store
+Thumbs.db
+Desktop.ini
+
+# Markdown and ordinary JSON reports are intentionally retained.