feat: Enhance OAuth module and OpenRouter client functionality

- Updated OAuth module to include unused imports for better clarity.
- Refactored OpenRouterClient to improve chat functionality and added support for tools in chat requests.
- Modified internet tools (Download, Fetch, Search) to use a more flexible internet mode check.
- Introduced new Bash tools for managing background jobs (BashOutput, BashKill).
- Enhanced workflow tool to parse and execute workflow scripts with arguments.
- Updated status and workflow views to reflect new agent and findings counts.
- Added IPC protocol definitions for client requests and state payloads.

src/tool/bash_tools.rs

@@ -0,0 +1,74 @@
+use serde_json::{json, Value};
+use anyhow::{Result, anyhow};
+use super::Tool;
+use super::ToolCtx;
+
+pub struct BashOutput;
+
+impl Tool for BashOutput {
+    fn name(&self) -> &'static str {
+        "bash_output"
+    }
+
+    fn description(&self) -> &'static str {
+        "Retrieve output from a background bash job by job_id"
+    }
+
+    fn parameters(&self) -> Value {
+        json!({
+            "type": "object",
+            "properties": {
+                "job_id": {
+                    "type": "string",
+                    "description": "Job ID returned by bash with run_in_background=true"
+                }
+            },
+            "required": ["job_id"]
+        })
+    }
+
+    fn run(&self, _ctx: &ToolCtx, args: &Value) -> Result<String> {
+        let job_id = args.get("job_id")
+            .and_then(|v| v.as_str())
+            .ok_or_else(|| anyhow!("missing required argument: job_id"))?
+            .to_string();
+        match crate::app::bgbash::control::bash_output(&job_id) {
+            Some(lines) => Ok(lines.join("\n")),
+            None => Ok(format!("No new output from job '{}'", job_id)),
+        }
+    }
+}
+
+pub struct BashKill;
+
+impl Tool for BashKill {
+    fn name(&self) -> &'static str {
+        "bash_kill"
+    }
+
+    fn description(&self) -> &'static str {
+        "Kill a background bash job by job_id"
+    }
+
+    fn parameters(&self) -> Value {
+        json!({
+            "type": "object",
+            "properties": {
+                "job_id": {
+                    "type": "string",
+                    "description": "Job ID returned by bash with run_in_background=true"
+                }
+            },
+            "required": ["job_id"]
+        })
+    }
+
+    fn run(&self, _ctx: &ToolCtx, args: &Value) -> Result<String> {
+        let job_id = args.get("job_id")
+            .and_then(|v| v.as_str())
+            .ok_or_else(|| anyhow!("missing required argument: job_id"))?
+            .to_string();
+        crate::app::bgbash::control::bash_kill(&job_id)?;
+        Ok(format!("Killed background job '{}'", job_id))
+    }
+}