Add project initialization guide and dependency catalog

[Copilot]

Documents project initialization using IVPM, catalogs all dependencies, and confirms svdep is not loaded (as it's not a project dependency).

Changes

Added agents.md - Initialization and dependency reference:

• IVPM setup and usage (pip install ivpm → ivpm update)
• Workarounds for installation issues (manual venv + pip fallback)
• Complete dependency catalog with versions and purposes
• svdep status: NOT LOADED - not in ivpm.yaml, not needed for documentation-focused repo

Verified setup:

• Python virtual environment at packages/python/
• Sphinx 8.2.3, MyST Parser 4.0.1, sphinxcontrib-mermaid 2.0.0 installed
• Documentation builds successfully (make html tested)

Dependency Summary

PyPI: sphinx, sphinxcontrib-mermaid, myst-parser
Git: zuspec (GitHub)
Not included: svdep - SystemVerilog dependency tracker, unnecessary without SV sources

# Quick start
pip install ivpm
ivpm update
source packages/python/bin/activate

# If git clone fails
source packages/python/bin/activate
pip install sphinx sphinxcontrib-mermaid myst-parser

Warning

Firewall rules blocked me from connecting to one or more addresses (expand for details)

I tried to connect to the following addresses, but was blocked by firewall rules:

• github.com (HTTP Only)
  • Triggering command: /usr/bin/ssh /usr/bin/ssh -o SendEnv=GIT_PROTOCOL git@github.com git-upload-pack 'zuspec/zuspec.git' (packet block)

If you need me to access, download, or install something from one of these locations, you can either:

• Configure Actions setup steps to set up my environment, which run before the firewall is enabled
• Add the appropriate URLs or hosts to the custom allowlist in this repository's Copilot coding agent settings (admins only)

Original prompt

Initialize the project as per agents.md. Catalog the project dependencies. Check whether svdep is loaded

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