brokerd: the podman argument lists

Implemented-By: OpenCode session (model recorded in docs/implementer-log.md)

crates/brokerd/src/runner.rs

@@ -5,6 +5,8 @@
 //!
 //! ```compile_fail
 //! let _ = brokerd::runner::RunSpec {
+//!     session: proto::SessionId::new("s1").unwrap(),
+//!     call: proto::CallId(1),
 //!     tool: brokerd::args::ToolName::Shell,
 //!     arguments: todo!(),
 //!     mounts: Vec::new(),
@@ -20,7 +22,7 @@
 
 use crate::args::{ToolArgs, ToolName};
 use crate::policy::Decision;
-use proto::ToolResponse;
+use proto::{CallId, SessionId, ToolResponse};
 
 /// A directory mounted for one call: a path and whether the runtime may write to it.
 #[derive(Debug, Clone, PartialEq, Eq)]
@@ -29,10 +31,13 @@ pub struct Mount {
     pub writable: bool,
 }
 
-/// What one call was turned into before it reached a `Runtime`: the tool, its arguments, the
-/// directories mounted and the hosts it may reach. Built only here, from a `Decision`.
+/// What one call was turned into before it reached a `Runtime`: the session and call it is, the
+/// tool, its arguments, the directories mounted and the hosts it may reach. Built only here, from a
+/// `Decision`.
 #[derive(Debug)]
 pub struct RunSpec {
+    session: SessionId,
+    call: CallId,
     tool: ToolName,
     arguments: ToolArgs,
     mounts: Vec<Mount>,
@@ -40,6 +45,12 @@ pub struct RunSpec {
 }
 
 impl RunSpec {
+    pub fn session(&self) -> &SessionId {
+        &self.session
+    }
+    pub fn call(&self) -> CallId {
+        self.call
+    }
     pub fn tool(&self) -> ToolName {
         self.tool
     }
@@ -108,6 +119,8 @@ pub fn run(decision: Decision, runtime: &dyn Runtime) -> proto::ToolResponse {
         ToolArgs::HttpFetch(_) => (Vec::new(), Some(decision.hosts().to_vec())),
     };
     let spec = RunSpec {
+        session: decision.request().session.clone(),
+        call: decision.request().call,
         tool: args.tool(),
         arguments: args.clone(),
         mounts,