chore(release): bump version to v1.4.0

Update version across workspace from 1.3.0 to 1.4.0.

Files updated:
- Cargo.toml (workspace version)
- All crate versions inherit via workspace = true

Documentation already updated in previous commits:
- README.md version badge and status
- CLAUDE.md current status
- CHANGELOG.md v1.4.0 entry

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

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

Author: doublegate

Cargo.toml

@@ -23,7 +23,7 @@ members = [
 exclude = ["crates/wraith-xdp", "fuzz"]
 
 [workspace.package]
-version = "1.3.0"
+version = "1.4.0"
 edition = "2024"
 rust-version = "1.85"
 license = "MIT"