feat: add terminal detachment functionality

implement terminal cleanup when closing tabs or unmounting component

remove unused actionRunner prop across components

delete unused file-watcher utility

app/lib/stores/terminal.ts

@@ -50,4 +50,19 @@ export class TerminalStore {
       process.resize({ cols, rows });
     }
   }
+
+  async detachTerminal(terminal: ITerminal) {
+    const terminalIndex = this.#terminals.findIndex((t) => t.terminal === terminal);
+
+    if (terminalIndex !== -1) {
+      const { process } = this.#terminals[terminalIndex];
+
+      try {
+        process.kill();
+      } catch (error) {
+        console.warn('Failed to kill terminal process:', error);
+      }
+      this.#terminals.splice(terminalIndex, 1);
+    }
+  }
 }

app/lib/stores/workbench.ts

@@ -147,6 +147,10 @@ export class WorkbenchStore {
     this.#terminalStore.attachBoltTerminal(terminal);
   }
 
+  detachTerminal(terminal: ITerminal) {
+    this.#terminalStore.detachTerminal(terminal);
+  }
+
   onTerminalResize(cols: number, rows: number) {
     this.#terminalStore.onTerminalResize(cols, rows);
   }