Initial MVP: local visual novel library with Ren'Py → PGVN converter

- FastAPI backend: admin bootstrap with forced credential change, admin-created
  users with one-time generated passwords, roles as permission sets
- Games and versions with content-addressed blob storage; forks copy only the
  manifest, so mods share assets with the original
- Worker: archive/RPA extraction, unrpyc for .rpyc, own .rpy parser, Python
  subset translated via ast, media converted to WebP/Opus/WebM
- React panel (library search, game page, upload, users, roles) and a
  framework-free web player with saves, history, skip/auto, transitions
- docker compose: postgres, backend, worker, nginx on a single HTTP port

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

backend/tests/fixtures/sample/script.rpy

@@ -0,0 +1,74 @@
+# Sample game used by converter tests and the end-to-end check.
+define e = Character("Эйлин", color="#c8ffc8")
+define m = Character("[player_name]", color="#c8c8ff")
+define n = Character(None, kind=nvl)
+define flash = Fade(0.1, 0.0, 0.5, color="#fff")
+define audio.theme = "audio/theme.ogg"
+
+default points = 0
+default player_name = "Гость"
+default inventory = []
+
+image bg room = "bg room.png"
+image eileen happy = "eileen happy.png"
+image eileen sad = Transform("eileen happy.png", alpha=0.7)
+image black = "#000"
+
+transform slightleft:
+    xalign 0.3 yalign 1.0
+
+init python:
+    def helper():
+        return 1
+    bonus = 5
+    persistent.seen_intro = False
+
+label start:
+    scene bg room with fade
+    play music theme fadein 1.0
+    "Добро пожаловать в {b}тестовую{/b} новеллу."
+
+    show eileen happy at left with dissolve
+    e "Привет! Как тебя зовут?"
+    $ player_name = "Алекс"
+    m "Меня зовут [player_name]."
+
+    menu:
+        e "Что будем делать?"
+        "Пойдём гулять" if points >= 0:
+            $ points += 1
+            $ inventory.append("map")
+            jump walk
+        "Останемся дома":
+            $ points -= 1
+            call stay_home
+            e "Вернулись из call."
+            jump ending
+
+label walk:
+    show eileen sad at slightleft
+    e sad "На улице дождь..."
+    with flash
+    $ renpy.pause(0.5)
+    if points > 0 and "map" in inventory:
+        e "Но у нас есть карта, [points] очков!"
+    elif points == 0:
+        e "Ничего."
+    else:
+        e "Плохо."
+    jump ending
+
+label stay_home:
+    hide eileen with dissolve
+    "Тихий вечер дома."
+    $ i = 0
+    while i < 2:
+        $ i += 1
+        "Тик-так [i]."
+    return
+
+label ending:
+    stop music fadeout 1.0
+    scene black with dissolve
+    centered "Конец. Очки: [points]"
+    return