Phase 6: Testing & Validation - Additional Fixes

Fixed remaining references found during testing:

Rust source code fixes:
- Updated CLI bin_name and override_usage: codex → llmx
- Updated test examples in wsl_paths.rs
- Updated GitHub URLs: github.com/openai/codex → github.com/valknar/llmx
- Updated directory references: ~/.codex/ → ~/.llmx/
- Updated documentation link: "Codex docs" → "LLMX docs"
- Updated feedback URL to point to valknar/llmx repository

Configuration files:
- Regenerated llmx-cli/package-lock.json with updated package name
- Updated pnpm-lock.yaml

Test results:
- TypeScript SDK build: ✓ Success
- TypeScript lint: ✓ Pass
- Rust tests: 12/13 passed (1 locale-specific test failure unrelated to rename)
- Rust release build: In progress

Files changed: 22 files (49 insertions, 46 deletions)

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

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

llmx-rs/common/src/config_override.rs

@@ -18,7 +18,7 @@ use toml::Value;
 #[derive(Parser, Debug, Default, Clone)]
 pub struct CliConfigOverrides {
     /// Override a configuration value that would otherwise be loaded from
-    /// `~/.codex/config.toml`. Use a dotted path (`foo.bar.baz`) to override
+    /// `~/.llmx/config.toml`. Use a dotted path (`foo.bar.baz`) to override
     /// nested values. The `value` portion is parsed as TOML. If it fails to
     /// parse as TOML, the raw string is used as a literal.
     ///