feat: add github copilot cli integration (#386)

* feat: add github copilot cli integration

refs #232

* docs: restore 0.6.5 changelog and document copilot hook flow

* test: cover copilot camelcase hook payloads

---------

Co-authored-by: Ogulcan Celik <ogulcancelik@gmail.com>

1 files changed, 50 insertions, 2 deletions

diff --git a/src/agent_resume.rs b/src/agent_resume.rs
index 8f450088..269b74de 100644
--- a/src/agent_resume.rs
+++ b/src/agent_resume.rs
@@ -106,6 +106,9 @@ pub fn plan(source: &str, agent: &str, session_ref: &AgentSessionRef) -> Option<
         ("herdr:codex", "codex", AgentSessionRefKind::Id) => {
             vec!["codex".into(), "resume".into(), session_ref.value.clone()]
         }
+        ("herdr:copilot", "copilot", AgentSessionRefKind::Id) => {
+            vec!["copilot".into(), format!("--resume={}", session_ref.value)]
+        }
         ("herdr:pi", "pi", AgentSessionRefKind::Path | AgentSessionRefKind::Id) => {
             vec!["pi".into(), "--session".into(), session_ref.value.clone()]
         }
@@ -145,6 +148,7 @@ fn is_official_agent_source(source: &str, agent: &str) -> bool {
         (source, agent),
         ("herdr:claude", "claude")
             | ("herdr:codex", "codex")
+            | ("herdr:copilot", "copilot")
             | ("herdr:pi", "pi")
             | ("herdr:hermes", "hermes")
             | ("herdr:opencode", "opencode")
@@ -190,6 +194,16 @@ mod tests {
         );
         assert_eq!(
             plan(
+                "herdr:copilot",
+                "copilot",
+                &AgentSessionRef::id("copilot-session").unwrap()
+            )
+            .unwrap()
+            .argv,
+            vec!["copilot", "--resume=copilot-session"]
+        );
+        assert_eq!(
+            plan(
                 "herdr:pi",
                 "pi",
                 &AgentSessionRef::path("/tmp/pi-session.jsonl").unwrap()
@@ -261,13 +275,34 @@ mod tests {
             Some("/tmp/claude-session".into())
         )
         .is_none());
+
+        let session_ref =
+            session_ref_from_report("herdr:copilot", "copilot", Some("copilot-id".into()), None)
+                .unwrap();
+        assert_eq!(session_ref.kind, AgentSessionRefKind::Id);
+        assert_eq!(session_ref.value, "copilot-id");
+        assert!(session_ref_from_report(
+            "herdr:copilot",
+            "copilot",
+            None,
+            Some("/tmp/copilot-session".into())
+        )
+        .is_none());
     }
 
     #[test]
     fn ids_are_data_not_shell_text() {
         let id = "abc; rm -rf /";
-        let plan = plan("herdr:codex", "codex", &AgentSessionRef::id(id).unwrap()).unwrap();
-        assert_eq!(plan.argv, vec!["codex", "resume", id]);
+        let codex_plan = plan("herdr:codex", "codex", &AgentSessionRef::id(id).unwrap()).unwrap();
+        assert_eq!(codex_plan.argv, vec!["codex", "resume", id]);
+
+        let copilot_plan = plan(
+            "herdr:copilot",
+            "copilot",
+            &AgentSessionRef::id(id).unwrap(),
+        )
+        .unwrap();
+        assert_eq!(copilot_plan.argv, vec!["copilot", "--resume=abc; rm -rf /"]);
     }
 
     #[test]
@@ -284,6 +319,12 @@ mod tests {
             &AgentSessionRef::path("/tmp/opencode-session").unwrap()
         )
         .is_none());
+        assert!(plan(
+            "herdr:copilot",
+            "copilot",
+            &AgentSessionRef::path("/tmp/copilot-session").unwrap()
+        )
+        .is_none());
         assert!(session_ref_from_snapshot(
             "herdr:hermes",
             "hermes",
@@ -298,5 +339,12 @@ mod tests {
             "opencode-session"
         )
         .is_some());
+        assert!(session_ref_from_snapshot(
+            "herdr:copilot",
+            "copilot",
+            AgentSessionRefKind::Id,
+            "copilot-session"
+        )
+        .is_some());
     }
 }