fix: strip redundant ./ prefixes from source path in header comment (#106)

compile_all_pipelines joins Path(".") with the source path read from a
previously generated header. Each recompilation prepended another "./",
causing paths like ././././agents/release-readiness.md.

Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>

Author: jamesadevine

src/compile/common.rs

@@ -476,13 +476,19 @@ pub const HEADER_MARKER: &str = "# @ado-aw";
 /// are normalized to forward slashes for cross-platform consistency.
 pub fn generate_header_comment(input_path: &std::path::Path) -> String {
     let version = env!("CARGO_PKG_VERSION");
-    let source_path = input_path
+    let mut source_path = input_path
         .to_string_lossy()
         .replace('\\', "/")
         .replace('\n', "")
         .replace('\r', "")
         .replace('"', "\\\"");
 
+    // Strip redundant leading "./" prefixes to prevent accumulation when
+    // compile_all_pipelines re-joins paths through Path::new(".").join(source).
+    while source_path.starts_with("./") {
+        source_path = source_path[2..].to_string();
+    }
+
     format!(
         "# This file is auto-generated by ado-aw. Do not edit manually.\n\
          # @ado-aw source=\"{}\" version={}\n",
@@ -1039,4 +1045,26 @@ mod tests {
             .expect("Should parse header with escaped quotes");
         assert_eq!(meta.source, r#"agents/my "agent".md"#);
     }
+
+    #[test]
+    fn test_generate_header_comment_strips_dot_slash_prefixes() {
+        let path = std::path::Path::new("././././agents/release-readiness.md");
+        let header = generate_header_comment(path);
+        assert!(
+            header.contains(r#"source="agents/release-readiness.md""#),
+            "Redundant ./ prefixes should be stripped: {}",
+            header
+        );
+    }
+
+    #[test]
+    fn test_generate_header_comment_strips_single_dot_slash() {
+        let path = std::path::Path::new("./agents/my-agent.md");
+        let header = generate_header_comment(path);
+        assert!(
+            header.contains(r#"source="agents/my-agent.md""#),
+            "Single ./ prefix should be stripped: {}",
+            header
+        );
+    }
 }