chore: upgrade Rust version and migrate pip commands to uv in Dockerfiles

- Upgraded Rust base image from 1.75 to 1.81 in client.Dockerfile
- Replaced python -m pip with uv pip for NER dependency installation in server.Dockerfile
- Updated spaCy model download and verification commands to use uv run python

docker/client.Dockerfile

@@ -2,7 +2,7 @@
 # Tauri Client Build Container
 # Used for CI builds and development - desktop app typically runs natively
 
-FROM rust:1.75-bookworm AS rust-base
+FROM rust:1.81-bookworm AS rust-base
 
 # Install Node.js 20.x
 RUN curl -fsSL https://deb.nodesource.com/setup_20.x | bash - \

docker/server.Dockerfile

@@ -77,11 +77,11 @@ CMD ["sh", "-c", "uv sync --frozen --group dev --all-extras && uv run python scr
 FROM base AS with-ner
 
 # Install NER dependencies and download spaCy model
-RUN python -m pip install -e ".[ner]" \
-    && python -m spacy download en_core_web_sm
+RUN uv pip install -e ".[ner]" \
+    && uv run python -m spacy download en_core_web_sm
 
 # Verify model is available
-RUN python -c "import spacy; nlp = spacy.load('en_core_web_sm'); print('NER model loaded successfully')"
+RUN uv run python -c "import spacy; nlp = spacy.load('en_core_web_sm'); print('NER model loaded successfully')"
 
 # -----------------------------------------------------------------------------
 # Development target (default)