fix: sync manager user script runtime status

[Rat0323]

What changed

• add a read-only one-shot CDP probe for window.__codexPlusUserScripts.scripts
• merge live renderer status into the standalone Manager's local script inventory
• refresh live status when opening Script Market and after enabling, disabling, or deleting a script
• gracefully fall back to filesystem inventory when Codex is not running or CDP is unavailable
• normalize all byte-exact upstream theme assets to LF to prevent recurring Windows checkout hash failures

Why

PR #1611 fixed runtime status reporting in the Codex-embedded user-script panel, but the standalone Codex++ Manager still called UserScriptManager::inventory() without renderer state. As a result, scripts that were actively running appeared as not_loaded in Script Market > Local scripts.

The new probe opens a short-lived, read-only CDP connection and reads the existing renderer registry directly. It does not reinject scripts and does not call the renderer bridge from inside CDP.

Validation

• npm test (36 passed)
• npm run check
• npm run vite:build
• cargo check -p codex-plus-manager
• cargo test -p codex-plus-core runtime_status_tests (2 passed)
• cargo test -p codex-plus-core --test upstream_theme_assets (2 passed after LF normalization)
• cargo test --workspace: all suites passed through the launcher tests; the pre-normalization run then reproduced the known Windows byte-exact EOL failures, which are covered by the included .gitattributes fix and the focused rerun above

Follow-up to #1611.