psp: detect installed PS1 games (incl. Category Lite folders)

PS1 EBOOTs install as PSP/GAME/{category}/{GAME_ID}/EBOOT.PBP, which the
PSP index ignored (it only indexed ISO games/videos), so the app never
marked them 'on PSP'. Index homebrew EBOOTs by folder id + embedded title,
match PS1 library items against them, and make 'Delete from PSP' remove the
whole game folder.

app/gui.py

@@ -3604,6 +3604,7 @@ class MainWindow(QMainWindow):
         self._psp_root = ""
         self._psp_index = {}
         self._psp_paths = {}
+        self._psp_homebrew = []
         self._pending_umd_dump = None
         self._auto_rename_umd = None
         self._library_threads = []
@@ -4149,6 +4150,7 @@ class MainWindow(QMainWindow):
             inventory = self.psp_page.inventory() or {}
             self._psp_index = psp.build_index(inventory)
             self._psp_paths = {"raw": {}, "norm": {}}
+            self._psp_homebrew = list(inventory.get("homebrew", []))
             for group in ("games", "videos"):
                 for it in inventory.get(group, []):
                     stem = Path(it["name"]).stem
@@ -4162,6 +4164,7 @@ class MainWindow(QMainWindow):
         else:
             self._psp_index = {}
             self._psp_paths = {}
+            self._psp_homebrew = []
         if hasattr(self, "details_panel"):
             self.details_panel.set_copy_available(bool(self._psp_root))
             current = getattr(self, "_current_item", None)
@@ -4180,7 +4183,20 @@ class MainWindow(QMainWindow):
         if stem.lower() in self._psp_index.get("raw", set()):
             return True
         norm = matcher.normalize_name(stem)
-        return bool(norm) and norm in self._psp_index.get("names", set())
+        if norm and norm in self._psp_index.get("names", set()):
+            return True
+        if item.get("system") == "ps1":
+            # PS1 EBOOTs install as PSP/GAME/{category}/{GAME_ID}/EBOOT.PBP, so
+            # match the source game-folder id (or the embedded title) against
+            # the homebrew index (which includes Category Lite subfolders).
+            game_id = Path(item.get("path") or "").parent.name.strip().lower()
+            if game_id and game_id in self._psp_index.get("homebrew_ids", set()):
+                return True
+            if stem.lower() in self._psp_index.get("homebrew_names", set()):
+                return True
+            if norm and norm in self._psp_index.get("homebrew_names", set()):
+                return True
+        return False
 
     def _psp_dot_icon(self):
         icon = getattr(self, "_psp_icon", None)
@@ -4371,6 +4387,35 @@ class MainWindow(QMainWindow):
             QMessageBox.information(self, "Not on PSP", "That disc is not installed on the PSP.")
             return
         stem = Path(item.get("canonical") or item.get("name") or "").stem
+        if item.get("system") == "ps1":
+            # PS1 EBOOTs live as PSP/GAME/{category}/{GAME_ID}/EBOOT.PBP; delete
+            # the whole game folder, matched by the source folder id (or title).
+            game_id = Path(item.get("path") or "").parent.name.strip().lower()
+            hb = self._psp_homebrew or []
+            if game_id:
+                matches = [h for h in hb if (h.get("id") or "").strip().lower() == game_id]
+            else:
+                matches = [h for h in hb if Path(h.get("name") or "").stem.lower() == stem.lower()]
+            if not matches:
+                QMessageBox.warning(self, "Not found", f"Could not find the installed copy on the PSP:\n{stem}")
+                return
+            name = item.get("title_override") or item.get("canonical") or item.get("name") or stem
+            preview = "\n".join(str(Path(m["path"]).parent) for m in matches[:5])
+            res = QMessageBox.question(
+                self, "Delete from PSP",
+                f"Delete this game folder from the PSP?\n\n{name}\n\n{preview}",
+                QMessageBox.Yes | QMessageBox.Cancel, QMessageBox.Cancel,
+            )
+            if res != QMessageBox.Yes:
+                return
+            failed = 0
+            for m in matches:
+                if not transfers.remove_path(Path(m["path"]).parent):
+                    failed += 1
+            if failed:
+                QMessageBox.warning(self, "Delete incomplete", f"{failed} folder(s) could not be deleted.")
+            self._refresh_psp()
+            return
         matches = list(self._psp_paths.get("raw", {}).get(stem.lower(), []))
         if not matches:
             n = matcher.normalize_name(stem)

app/psp.py

@@ -236,8 +236,11 @@ def list_installed(root):
 def build_index(inventory):
     """Build a lookup index for matching library discs against the PSP.
 
-    Returns ``{"raw": set, "names": set}`` where ``raw`` holds lowercase ISO
-    stems (exact filename match) and ``names`` holds fuzzy-normalized stems.
+    Returns ``{"raw", "names", "homebrew_ids", "homebrew_names"}`` where
+    ``raw`` holds lowercase ISO stems (exact filename match), ``names`` holds
+    fuzzy-normalized stems, and the homebrew keys index ``PSP/GAME/**/EBOOT.PBP``
+    (homebrew + PS1 Classics, including Category Lite subfolders) by folder id
+    and embedded title.
     """
     raw, names = set(), set()
     for group in ("games", "videos"):
@@ -247,7 +250,20 @@ def build_index(inventory):
             norm = matcher.normalize_name(stem)
             if norm:
                 names.add(norm)
-    return {"raw": raw, "names": names}
+
+    hb_ids, hb_names = set(), set()
+    for it in (inventory or {}).get("homebrew", []):
+        ident = str(it.get("id") or "").strip().lower()
+        if ident:
+            hb_ids.add(ident)
+        stem = Path(it.get("name") or "").stem.strip().lower()
+        if stem:
+            hb_names.add(stem)
+        norm = matcher.normalize_name(Path(it.get("name") or "").stem)
+        if norm:
+            hb_names.add(norm)
+    return {"raw": raw, "names": names,
+            "homebrew_ids": hb_ids, "homebrew_names": hb_names}
 
 
 def find_umd_iso(root):