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/execpolicy/src/sed_command.rs

@@ -0,0 +1,17 @@
+use crate::error::Error;
+use crate::error::Result;
+
+pub fn parse_sed_command(sed_command: &str) -> Result<()> {
+    // For now, we parse only commands like `122,202p`.
+    if let Some(stripped) = sed_command.strip_suffix("p")
+        && let Some((first, rest)) = stripped.split_once(",")
+        && first.parse::<u64>().is_ok()
+        && rest.parse::<u64>().is_ok()
+    {
+        return Ok(());
+    }
+
+    Err(Error::SedCommandNotProvablySafe {
+        command: sed_command.to_string(),
+    })
+}