fix: align Python version statements with pyproject.toml requires-python (#545)

CONTRIBUTING.md said ``Python 3.13+`` and ``Target: Python 3.13``,
while CLAUDE.md said ``Python >= 3.10 (3.10-3.14)``. The actual
``pyproject.toml`` constraint is ``requires-python = ">=3.11"``, so
both docs were drifted in opposite directions. Aligned both to
``>=3.11`` (3.11-3.14 supported) so contributors install the right
interpreter on the first try.

Co-authored-by: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

Author: n24q02m

CLAUDE.md

@@ -1,7 +1,7 @@
 # CLAUDE.md - qwen3-embed
 
 Thu vien embedding va reranking Qwen3 qua ONNX Runtime va GGUF.
-Python >= 3.10 (ho tro 3.10-3.14), uv, hatchling. KHONG phai src layout -- package tai `qwen3_embed/`.
+Python >= 3.11 (ho tro 3.11-3.14), uv, hatchling. KHONG phai src layout -- package tai `qwen3_embed/`.
 Fork cua fastembed (Qdrant), chi giu Qwen3 models. License: Apache-2.0.
 
 ## Commands
@@ -84,7 +84,7 @@ PSR v10 (workflow_dispatch) -> PyPI. Khong co Docker (la library, khong phai ser
 ## Luu y
 
 - KHONG phai src layout: package truc tiep tai `qwen3_embed/`, khong phai `src/qwen3_embed/`.
-- `requires-python = ">=3.10"` -- ho tro rong hon cac project khac (3.10-3.14).
+- `requires-python = ">=3.11"` -- ho tro rong hon cac project khac (3.11-3.14).
 - Optional dependency: `pip install qwen3-embed[gguf]` cho llama-cpp-python.
 - GPU auto-detect: ONNX (onnxruntime-gpu/directml), GGUF (llama-cpp-python CUDA build).
 - Last-token pooling (khong phai mean pooling) + MRL support (truncate 32-1024 dims).

CONTRIBUTING.md

@@ -4,7 +4,7 @@ Thank you for your interest in contributing! This guide will help you get starte
 
 ## Prerequisites
 
-- [Python](https://www.python.org/) 3.13+
+- [Python](https://www.python.org/) 3.11+ (per `pyproject.toml`; tested through 3.14)
 - [uv](https://docs.astral.sh/uv/)
 - [mise](https://mise.jdx.dev/) (recommended)
 
@@ -57,7 +57,7 @@ tests/
 - **Formatter**: [Ruff](https://docs.astral.sh/ruff/) (4-space indent, double quotes, 99 line width)
 - **Linting**: Ruff rules (E, F, I, UP, B, SIM)
 - **Type checker**: [ty](https://docs.astral.sh/ty/)
-- **Target**: Python 3.13
+- **Target**: Python 3.11+ (matches `requires-python` in `pyproject.toml`)
 
 ## Testing