refactor: move game-specific import logic into profiles; unblock Tomie import

- Add app/games: GameProfile base, registry, ReaderHooks and renpy/naninovel/
  tomie profiles. pipeline, preflight, detect and mods dispatch via the registry
- Move tomie_* converter modules to app/games/tomie and split out reader hooks,
  import, mod validation and known defects
- Tolerate the 31 authoring defects of the pinned Tomie build as report
  warnings (exact list, per-script counts); any new defect still blocks import
- Frontend: runtime registry (runtimes.ts) with lazy Tomie launcher
- Add profile/registry tests and docs/GAME_PROFILES.md; update IMPORT.md

Full media export of the original Tomie build is not yet verified.

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

backend/app/games/tomie/defects.py

@@ -0,0 +1,63 @@
+"""Authoring defects of the pinned Tomie build that the importer tolerates.
+
+These are mistakes in the original scripts (jumps to labels that do not exist,
+branches without EndIf, assignments without a valid operator). The original
+engine fails at the same place; so does the PGames player, which throws an
+explicit error when execution reaches one (see nani-runtime.ts). They are listed
+as warnings in the import report instead of blocking the whole game.
+
+The list is exact: a key is (issue code, message, script) and the number is the
+maximum count. Anything new or more frequent - for example from an edited mod -
+is still refused. Do not add entries to make an import pass; add them only after
+confirming that the defect exists in the original build.
+"""
+from collections import Counter
+
+from app.converter.compatibility import Issue
+
+KNOWN_DEFECTS: dict[tuple[str, str, str], int] = {
+    ('invalid_branch', 'BeginIf не имеет завершающего EndIf', 'EP_Slum'): 1,
+    ('invalid_branch', 'BeginIf не имеет завершающего EndIf', 'QuestHub'): 1,
+    ('invalid_branch', 'BeginIf не имеет завершающего EndIf', 'System'): 1,
+    ('invalid_branch', 'Else не имеет завершающего EndIf', 'EP_Slum'): 1,
+    ('invalid_branch', 'Else не имеет завершающего EndIf', 'QuestHub'): 1,
+    ('invalid_branch', 'ElseIf не имеет завершающего EndIf', 'EP_Slum'): 1,
+    ('missing_target', 'Не найден переход AB_Studio.SkillUp', 'AB_Studio'): 1,
+    ('missing_target', 'Не найден переход B_Beggar.Start', 'DicePlaySub'): 1,
+    ('missing_target', 'Не найден переход B_Exercise.Start', 'DicePlaySub'): 1,
+    ('missing_target', 'Не найден переход B_Harassment.endStreet', 'B_Harassment'): 1,
+    ('missing_target', 'Не найден переход B_Job.Start', 'DicePlaySub'): 1,
+    ('missing_target', 'Не найден переход B_Model.Start', 'DicePlaySub'): 1,
+    ('missing_target', 'Не найден переход B_Police.Start', 'DicePlaySub'): 1,
+    ('missing_target', 'Не найден переход B_R_Roaming_Normal.DemandSexByGroup', 'B_R_Roaming_Normal'): 1,
+    ('missing_target', 'Не найден переход B_Rest.Start', 'DicePlaySub'): 1,
+    ('missing_target', 'Не найден переход B_Study.Start', 'DicePlaySub'): 1,
+    ('missing_target', 'Не найден переход Common.Failed', 'B_Approached'): 1,
+    ('missing_target', 'Не найден переход Common.StatP', 'Common_Date'): 1,
+    ('missing_target', 'Не найден переход E_VacationWithMari.DayPassVacation', 'DicePlaySub'): 1,
+    ('missing_target', 'Не найден переход E_VacationWithMari.DayPassVacation', 'E_VacationWithMari'): 2,
+    ('missing_target', 'Не найден переход Laptop.Cam_END', 'Laptop'): 1,
+    ('missing_target', 'Не найден переход Laptop.SexPain_Defloration', 'Laptop'): 1,
+    ('missing_target', 'Не найден переход LoanShark.End', 'LoanShark'): 1,
+    ('missing_target', 'Не найден переход MessagePlay.End', 'MessagePlay'): 1,
+    ('missing_target', 'Не найден переход ReturnToHome.return', 'ReturnToHome'): 1,
+    ('missing_target', 'Не найден переход XEnding.Koman', 'QuestHub'): 1,
+    ('missing_target', 'Не найден переход XEnding.Suicide_Continue', 'XEnding'): 1,
+    ('unsupported_choice', 'Не поддерживается присваивание Naninovel: iCorruption+1.5', 'AppInswitter'): 1,
+    ('unsupported_choice', 'Не поддерживается присваивание Naninovel: iWillpower-5', 'EP_Slum'): 1,
+    ('unsupported_choice', 'Не поддерживается присваивание Naninovel: temp==2', 'B_HighStreet'): 1,
+}
+
+
+def split_known(issues: list[Issue]) -> tuple[list[Issue], list[Issue]]:
+    """Return (blocking, known) issues. Each key is waived up to its recorded count."""
+    left = Counter(KNOWN_DEFECTS)
+    blocking, known = [], []
+    for issue in issues:
+        key = (issue.code, issue.message, issue.location.split(":")[0])
+        if left[key] > 0:
+            left[key] -= 1
+            known.append(issue)
+        else:
+            blocking.append(issue)
+    return blocking, known