Phase 5: Configuration & Documentation

Updated all documentation and configuration files:

Documentation changes:
- Updated README.md to describe LLMX as LiteLLM-powered fork
- Updated CLAUDE.md with LiteLLM integration details
- Updated 50+ markdown files across docs/, llmx-rs/, llmx-cli/, sdk/
- Changed all references: codex → llmx, Codex → LLMX
- Updated package references: @openai/codex → @llmx/llmx
- Updated repository URLs: github.com/openai/codex → github.com/valknar/llmx

Configuration changes:
- Updated .github/dependabot.yaml
- Updated .github workflow files
- Updated cliff.toml (changelog configuration)
- Updated Cargo.toml comments

Key branding updates:
- Project description: "coding agent from OpenAI" → "coding agent powered by LiteLLM"
- Added attribution to original OpenAI Codex project
- Documented LiteLLM integration benefits

Files changed: 51 files (559 insertions, 559 deletions)

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude <noreply@anthropic.com>

llmx-cli/scripts/README.md

@@ -6,14 +6,14 @@ example, to stage the CLI, responses proxy, and SDK packages for version `0.6.0`
 ```bash
 ./scripts/stage_npm_packages.py \
   --release-version 0.6.0 \
-  --package codex \
-  --package codex-responses-api-proxy \
-  --package codex-sdk
+  --package llmx \
+  --package llmx-responses-api-proxy \
+  --package llmx-sdk
 ```
 
 This downloads the native artifacts once, hydrates `vendor/` for each package, and writes
 tarballs to `dist/npm/`.
 
 If you need to invoke `build_npm_package.py` directly, run
-`codex-cli/scripts/install_native_deps.py` first and pass `--vendor-src` pointing to the
+`llmx-cli/scripts/install_native_deps.py` first and pass `--vendor-src` pointing to the
 directory that contains the populated `vendor/` tree.