fix(fill/tabs): dispatch real input/change/blur (#25); close <tab> wording + chrome-use current (#26)

#25 — fill() didn't fire the events framework inputs / site autocomplete need:
it set value directly (bypassing React's value-tracker) and typed via
Input.insertText, so controlled components and input/change/blur listeners (e.g.
Mercari's postal-code → 都道府県 lookup) never ran though the value showed. fill
now emulates a real edit: focus, set through the element's prototype value setter
(React _valueTracker registers), then dispatch input → input → change → blur/
focusout. SELECT and contenteditable handled too. type <sel> <text> remains for
per-keystroke sites. Verified live: an input wired with input/change/blur fired
'IICB' from one fill.

#26 (ergonomics):
- 'close <tab>' now closes just that tab and prints 'Tab [tN] closed'; bare
  'close' still closes the browser. Previously 'close t12' ran a browser close
  and alarmingly printed 'Browser closed'.
- new 'chrome-use current': prints the active tab's stable handle (tabId + CDP
  targetId + url/title), refreshed live — so an agent holds the targetId (which
  survives cross-process nav) instead of re-deriving 'which tab is live' from
  'tabs' every step. The deeper tab-id churn is the #21/#23 stable-targetId story.

Tests cover fill events (live), close tab-vs-browser parse, and current.

cli/src/native/actions.rs

@@ -1395,6 +1395,7 @@ pub async fn execute_command(cmd: &Value, state: &mut DaemonState) -> Value {
         "count" => handle_count(cmd, state).await,
         "styles" => handle_styles(cmd, state).await,
         "bringtofront" => handle_bringtofront(state).await,
+        "current" => handle_current(state).await,
         "timezone" => handle_timezone(cmd, state).await,
         "locale" => handle_locale(cmd, state).await,
         "geolocation" => handle_geolocation(cmd, state).await,
@@ -5333,6 +5334,18 @@ async fn handle_bringtofront(state: &DaemonState) -> Result<Value, String> {
     Ok(json!({ "broughtToFront": true }))
 }
 
+async fn handle_current(state: &mut DaemonState) -> Result<Value, String> {
+    let mgr = state.browser.as_mut().ok_or("Browser not launched")?;
+    // Refresh so `current` reflects the live URL/title even after a cross-process
+    // nav (the relay's cached target_info can lag) (#26).
+    mgr.resync_targets().await.ok();
+    let mut info = mgr.active_page_info().ok_or("No active tab")?;
+    if let Some(obj) = info.as_object_mut() {
+        obj.insert("current".to_string(), json!(true));
+    }
+    Ok(info)
+}
+
 async fn handle_timezone(cmd: &Value, state: &DaemonState) -> Result<Value, String> {
     let mgr = state.browser.as_ref().ok_or("Browser not launched")?;
     let timezone = cmd