deb: detect package directory using cwd

remove linux-riscv specific quirk

quirks.yml

@@ -13,7 +13,3 @@ quirks:
   #     parameters:
   #       key: value
 
-  linux-riscv:
-     deb:
-       package_directory:
-         - linux-main

src/deb/mod.rs

@@ -150,6 +150,23 @@ pub(crate) fn find_package_directory(
         }
     }
 
+    // Try the current working directory name as a package directory
+    // This is useful when the user is inside a non-standard package directory
+    // e.g. ~/kernels/linux-riscv/linux-main -> tries "linux-main"
+    if let Ok(cwd) = std::env::current_dir()
+        && let Some(cwd_name) = cwd.file_name()
+    {
+        let cwd_name_str = cwd_name.to_string_lossy();
+        let package_dir = parent_dir.join(cwd_name_str.as_ref());
+        if ctx.exists(&package_dir)? && ctx.exists(&package_dir.join("debian"))? {
+            log::debug!(
+                "Found package directory via CWD name: {}",
+                package_dir.display()
+            );
+            return Ok(package_dir);
+        }
+    }
+
     // Try package/package pattern first
     let package_dir = parent_dir.join(package).join(package);
     if ctx.exists(&package_dir)? && ctx.exists(&package_dir.join("debian"))? {