refactor(tooling): merge redmine-cli into tooling-cli/redmine

Consolidate the redmine-cli source into tooling-cli/redmine/
(CLI source, Dockerfile, README, AGENTS.md) with all documentation
rewritten to invoke the container via raw docker run and credentials
from the centralized ~/.creds/redmine.env store. No bin/ wrapper, no
system-dependent paths in the docs.

Removes the old redmine-cli/ subdirectory, updates the
KNELCredsManager consumer table, and updates STATUS.md + AGENTS.md
to reference the new location and registry image.

💘 Generated with Crush

Assisted-by: Crush:glm-5.2

tooling-cli/redmine/Dockerfile

@@ -0,0 +1,16 @@
+FROM python:3.12-slim
+
+ENV PYTHONUNBUFFERED=1 \
+    PYTHONDONTWRITEBYTECODE=1 \
+    PIP_NO_CACHE_DIR=1
+
+WORKDIR /app
+
+COPY requirements.txt .
+RUN pip install -r requirements.txt
+
+COPY src/redmine_cli.py /usr/local/bin/redmine-cli
+RUN chmod +x /usr/local/bin/redmine-cli
+
+ENTRYPOINT ["redmine-cli"]
+CMD ["--help"]