Phase 1: Repository & Infrastructure Setup

- Renamed directories: codex-rs -> llmx-rs, codex-cli -> llmx-cli
- Updated package.json files:
  - Root: llmx-monorepo
  - CLI: @llmx/llmx
  - SDK: @llmx/llmx-sdk
- Updated pnpm workspace configuration
- Renamed binary: codex.js -> llmx.js
- Updated environment variables: CODEX_* -> LLMX_*
- Changed repository URLs to valknar/llmx

🤖 Generated with Claude Code

llmx-rs/common/Cargo.toml

@@ -0,0 +1,21 @@
+[package]
+edition = "2024"
+name = "codex-common"
+version = { workspace = true }
+
+[lints]
+workspace = true
+
+[dependencies]
+clap = { workspace = true, features = ["derive", "wrap_help"], optional = true }
+codex-core = { workspace = true }
+codex-protocol = { workspace = true }
+codex-app-server-protocol = { workspace = true }
+serde = { workspace = true, optional = true }
+toml = { workspace = true, optional = true }
+
+[features]
+# Separate feature so that `clap` is not a mandatory dependency.
+cli = ["clap", "serde", "toml"]
+elapsed = []
+sandbox_summary = []