Fix build failure and add pkgx package configuration

[Copilot]

The project failed to compile due to incorrect crate name references and lacked pkgx packaging support.

Build Fixes

• src/bin/cratedocs.rs: Replace cratedocs_mcp references with correct crate name rust_cargo_docs_rag_mcp (6 instances)
• tests/integration_tests.rs: Fix crate import path

// Before
use cratedocs_mcp::tools::DocRouter;

// After  
use rust_cargo_docs_rag_mcp::tools::DocRouter;

pkgx Integration

• package.yml: Add pkgx package manifest following pantry standards
  • Rust ≥1.70 dependency
  • Standard cargo build/install workflow
  • Version tracking via GitHub tags
• README.md: Document pkgx installation and usage
• justfile: Add pkgx-build, pkgx-run, pkgx-test recipes

Users can now build without system Rust: pkgx +rust +cargo cargo build --release

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:

• docs.rs
  • Triggering command: /home/REDACTED/work/rust-cargo-docs-rag-mcp/rust-cargo-docs-rag-mcp/target/debug/deps/rust_cargo_docs_rag_mcp-33e405d7a63bf207 (dns block)
• pkgx.dev
  • Triggering command: curl -fsS REDACTED (dns block)
• pkgx.sh
  • Triggering command: curl -fsS REDACTED (dns 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

get the pkgx build working;

---

✨ Let Copilot coding agent set things up for you — coding agent works faster and does higher quality work when set up for your repo.

[elasticdotventures]

@copilot compile this into a docker container