fix(tinybard): add requirements.txt at repository root for Hugging Face Spaces build

.agents/tasks/TASK.2026-06-10_root_requirements.md

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+# Task: TinyBard Root requirements.txt Provisioning
+
+- Branch: fix/tinybard-root-requirements
+- Date: 2026-06-10
+
+## Chain-of-Draft
+
+1. Initialize task file.
+2. Write root requirements.txt.
+3. Commit and merge.
+4. Push to HF Space.
+5. Verify on HF Space.
+
+####
+Proceeding with implementation.

requirements.txt

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+gradio>=6.0.0
+fastapi>=0.110
+huggingface_hub>=0.36
+uvicorn[standard]>=0.27
+kokoro-onnx>=0.3.4
+espeakng-loader>=0.2.1
+soundfile>=0.12.1
+numpy>=1.26.0