feat: add Vec<ParsedCommand> to ExecApprovalRequestEvent (#5222)

This adds `parsed_cmd: Vec<ParsedCommand>` to `ExecApprovalRequestEvent`
in the core protocol (`protocol/src/protocol.rs`), which is also what
this field is named on `ExecCommandBeginEvent`. Honestly, I don't love
the name (it sounds like a single command, but it is actually a list of
them), but I don't want to get distracted by a naming discussion right
now.

This also adds `parsed_cmd` to `ExecCommandApprovalParams` in
`codex-rs/app-server-protocol/src/protocol.rs`, so it will be available
via `codex app-server`, as well.

For consistency, I also updated `ExecApprovalElicitRequestParams` in
`codex-rs/mcp-server/src/exec_approval.rs` to include this field under
the name `codex_parsed_cmd`, as that struct already has a number of
special `codex_*` fields. Note this is the code for when Codex is used
as an MCP _server_ and therefore has to conform to the official spec for
an MCP elicitation type.

codex-rs/app-server-protocol/src/protocol.rs

@@ -9,6 +9,7 @@ use codex_protocol::config_types::ReasoningEffort;
 use codex_protocol::config_types::ReasoningSummary;
 use codex_protocol::config_types::SandboxMode;
 use codex_protocol::config_types::Verbosity;
+use codex_protocol::parse_command::ParsedCommand;
 use codex_protocol::protocol::AskForApproval;
 use codex_protocol::protocol::EventMsg;
 use codex_protocol::protocol::FileChange;
@@ -697,6 +698,7 @@ pub struct ExecCommandApprovalParams {
     pub cwd: PathBuf,
     #[serde(skip_serializing_if = "Option::is_none")]
     pub reason: Option<String>,
+    pub parsed_cmd: Vec<ParsedCommand>,
 }
 
 #[derive(Serialize, Deserialize, Debug, Clone, PartialEq, TS)]
@@ -904,6 +906,9 @@ mod tests {
             command: vec!["echo".to_string(), "hello".to_string()],
             cwd: PathBuf::from("/tmp"),
             reason: Some("because tests".to_string()),
+            parsed_cmd: vec![ParsedCommand::Unknown {
+                cmd: "echo hello".to_string(),
+            }],
         };
         let request = ServerRequest::ExecCommandApproval {
             request_id: RequestId::Integer(7),
@@ -920,6 +925,12 @@ mod tests {
                     "command": ["echo", "hello"],
                     "cwd": "/tmp",
                     "reason": "because tests",
+                    "parsedCmd": [
+                        {
+                            "type": "unknown",
+                            "cmd": "echo hello"
+                        }
+                    ]
                 }
             }),
             serde_json::to_value(&request)?,