#41 ウィニング・ラン修正

AGENTS.md

@@ -158,13 +158,6 @@ npm run preview
 - Keep page-level code under `frontend/src/pages` and shared UI/feature code
   under `frontend/src/components` unless existing patterns point elsewhere.
 - Match existing Tailwind, component, and import alias conventions.
-- In TypeScript and TSX, prefer direct comparison operators such as `===` and
-  `!==` over negating a comparison like `!(a === b)`.
-- In TypeScript and TSX, prefer `++i` or `--i` over `i += 1` or `i -= 1` for
-  simple unit-step counter updates.
-- For user-facing Japanese text, prefer modern kana usage and natural current
-  phrasing over historical spellings or awkward literal wording.
-- For user-facing Japanese ellipses, prefer `……` over ASCII `...`.
 
 ### Frontend TSX style
 
@@ -186,9 +179,6 @@ npm run preview
   single physical line.
 - Always add braces around `if`, `else`, or `for` bodies when the body spans
   two or more physical lines, even if it is one statement.
-- Do not use a leading semicolon for expression statements such as
-  `;([...]).forEach(...)`; rewrite the expression to avoid ASI hazards
-  explicitly, for example with `void`.
 
 Preferred:
 

backend/app/controllers/gekanator_games_controller.rb

@@ -1,6 +1,6 @@
 class GekanatorGamesController < ApplicationController
   def create
-    return head :unauthorized unless current_user
+    return head :not_found unless current_user&.admin?
 
     guessed_post_id = params.require(:guessed_post_id)
     correct_post_id = params[:correct_post_id].presence
@@ -14,29 +14,18 @@ class GekanatorGamesController < ApplicationController
         question_count: answers.length,
         answers:)
 
-    if game.invalid?
+    if game.save
+      render json: { id: game.id }, status: :created
+    else
       render json: { errors: game.errors.full_messages }, status: :unprocessable_entity
-      return
     end
-
-    learned_example_count = 0
-
-    ActiveRecord::Base.transaction do
-      game.save!
-      learned_example_count = learn_answers_from_game!(game)
-    end
-
-    render json: {
-      id: game.id,
-      learned_example_count:
-    }, status: :created
-  rescue ActiveRecord::RecordInvalid => e
-    render json: { errors: e.record.errors.full_messages }, status: :unprocessable_entity
   end
 
   def extra_questions
-    game = find_owned_game
+    return head :not_found unless current_user&.admin?
-    return if performed?
+
+    game = GekanatorGame.find_by(id: params[:id])
+    return head :not_found unless game
 
     questions =
         GekanatorQuestion
@@ -45,11 +34,9 @@ class GekanatorGamesController < ApplicationController
         .where(kind: 'post_similarity', source: 'user_suggested')
         .to_a
 
-    selected =
+    selected = weighted_sample_questions(
-        prioritized_extra_questions(
         questions,
         post_id: game.correct_post_id,
-            user: current_user,
         limit: 2)
 
     render json: {
@@ -58,8 +45,10 @@ class GekanatorGamesController < ApplicationController
   end
 
   def extra_question_answers
-    game = find_owned_game
+    return head :not_found unless current_user&.admin?
-    return if performed?
+
+    game = GekanatorGame.find_by(id: params[:id])
+    return head :not_found unless game
 
     answer_params = params.require(:answers)
     if !answer_params.is_a?(Array)
@@ -111,23 +100,6 @@ class GekanatorGamesController < ApplicationController
     }
   end
 
-  def prioritized_extra_questions questions, post_id:, user:, limit:
-    answered_question_ids =
-        GekanatorQuestionExample
-        .where(user:, gekanator_question_id: questions.map(&:id))
-        .distinct
-        .pluck(:gekanator_question_id)
-    unanswered, answered =
-        questions.partition { |question| !answered_question_ids.include?(question.id) }
-    selected = weighted_sample_questions(unanswered, post_id:, limit:)
-    return selected if selected.length >= limit
-
-    selected + weighted_sample_questions(
-        answered.reject { |question| selected.any? { _1.id == question.id } },
-        post_id:,
-        limit: limit - selected.length)
-  end
-
   def weighted_sample_questions questions, post_id:, limit:
     remaining = questions.uniq(&:id)
     selected = []
@@ -165,97 +137,4 @@ class GekanatorGamesController < ApplicationController
 
     question.priority_weight.to_f / (1.0 + sample_count * 0.15)
   end
-
-  def find_owned_game
-    return head :unauthorized unless current_user
-
-    game = GekanatorGame.find_by(id: params[:id])
-    return head :not_found unless game
-    if !current_user.admin? && game.user_id != current_user.id
-      return head :not_found
-    end
-
-    game
-  end
-
-  def learn_answers_from_game! game
-    correct_post = game.correct_post
-    return 0 if correct_post.blank?
-
-    accepted_questions =
-        GekanatorQuestion
-        .accepted
-        .index_by { |question| public_question_id_for(question) }
-    learned_count = 0
-
-    Array(game.answers).each do |answer|
-      answer_value = answer['answer'].to_s
-      next if answer_value.blank? || answer_value == 'unknown'
-
-      question = accepted_questions[answer['question_id'].to_s]
-      next unless learnable_game_answer_question?(question)
-
-      example =
-          GekanatorQuestionExample.find_or_initialize_by(
-              gekanator_question: question,
-              post: correct_post,
-              user: current_user)
-      example.record_answer!(
-          answer: answer_value,
-          source: 'post_game_answer',
-          gekanator_game: game)
-      example.save!
-      learned_count += 1
-    end
-
-    learned_count
-  end
-
-  def public_question_id_for question
-    condition = normalize_condition(question.condition)
-
-    case condition[:type]
-    when 'tag'
-      "tag:#{condition[:key]}"
-    when 'source'
-      "source:#{condition[:host]}"
-    when 'original-year'
-      "original-year:#{condition[:year]}"
-    when 'original-month'
-      "original-month:#{condition[:month]}"
-    when 'original-month-day'
-      "original-month-day:#{condition[:monthDay] || condition[:month_day]}"
-    when 'title-length-at-least'
-      "title:length-at-least:#{condition[:length]}"
-    when 'title-length-greater-than'
-      "title:length-at-least:#{condition[:length].to_i + 1}"
-    when 'title-has-ascii'
-      'title:ascii'
-    when 'title-contains'
-      "title:contains:#{condition[:text]}"
-    when 'post-similarity'
-      "post-similarity:#{question.id}"
-    else
-      "catalog:#{question.id}"
-    end
-  end
-
-  def normalize_condition condition
-    json = condition.deep_dup.as_json
-
-    if json['type'] == 'original-month-day' && json['monthDay'].blank?
-      json['monthDay'] = json.delete('month_day')
-    end
-
-    json.deep_symbolize_keys
-  end
-
-  def learnable_game_answer_question? question
-    return true if question.kind == 'post_similarity'
-    return false unless question.kind == 'tag'
-
-    condition = normalize_condition(question.condition)
-    key = condition[:key].to_s
-    !key.start_with?('nico:')
-  end
 end

backend/app/controllers/gekanator_posts_controller.rb

@@ -1,8 +1,10 @@
 class GekanatorPostsController < ApplicationController
   def index
+    return head :not_found unless current_user&.admin?
+
     posts =
         Post
-        .preload(:post_similarities, tags: :tag_name)
+        .preload(tags: :tag_name)
         .with_attached_thumbnail
         .order(Arel.sql(
             'COALESCE(posts.original_created_before - INTERVAL 1 MINUTE, ' \
@@ -22,12 +24,6 @@ class GekanatorPostsController < ApplicationController
       thumbnail_base: post.thumbnail_base,
       original_created_from: post.original_created_from,
       original_created_before: post.original_created_before,
-      post_similarity_edges: post.post_similarities.map { |similarity|
-        {
-          target_post_id: similarity.target_post_id,
-          cos: similarity.cos.to_f
-        }
-      },
       tags: post.tags.map { |tag| tag_json(tag) }
     }
   end

backend/app/controllers/gekanator_question_suggestions_controller.rb

@@ -1,41 +1,9 @@
 class GekanatorQuestionSuggestionsController < ApplicationController
   def create
-    return head :unauthorized unless current_user
+    return head :not_found unless current_user&.admin?
 
     game = GekanatorGame.find_by(id: params.require(:gekanator_game_id))
     return head :not_found unless game
-    if !current_user.admin? && game.user_id != current_user.id
-      return head :not_found
-    end
-
-    existing_question_id = params[:existing_question_id].presence
-    if existing_question_id
-      question = GekanatorQuestion.accepted.find_by(id: existing_question_id)
-      return head :not_found unless question
-      unless learnable_existing_question?(question)
-        return render_validation_error fields: { existing_question_id: ['質問が不正です．'] }
-      end
-
-      example =
-          GekanatorQuestionExample.find_or_initialize_by(
-              gekanator_question: question,
-              post: game.correct_post,
-              user: current_user)
-      example.record_answer!(
-          answer: params.require(:answer),
-          source: 'post_game_extra',
-          gekanator_game: game)
-
-      if example.save
-        render json: {
-          id: question.id,
-          count: game.question_suggestions.count
-        }, status: :created
-      else
-        render_validation_error example
-      end
-      return
-    end
 
     suggestion = GekanatorQuestionSuggestion.new(
         gekanator_game: game,
@@ -82,14 +50,4 @@ class GekanatorQuestionSuggestionsController < ApplicationController
   rescue NotImplementedError
     head :not_implemented
   end
-
-  private
-
-  def learnable_existing_question? question
-    return true if question.kind == 'post_similarity'
-    return false unless question.kind == 'tag'
-
-    key = question.condition.as_json['key'].to_s
-    !key.start_with?('nico:')
-  end
 end

backend/app/controllers/gekanator_questions_controller.rb

@@ -1,5 +1,7 @@
 class GekanatorQuestionsController < ApplicationController
   def index
+    return head :not_found unless current_user&.admin?
+
     questions =
         GekanatorQuestion
         .accepted
@@ -16,7 +18,6 @@ class GekanatorQuestionsController < ApplicationController
   def question_json question
     condition = condition_json(question.condition).deep_symbolize_keys
     json = {
-      record_id: question.id,
       id: question_id_for(question, condition),
       text: question_text_for(question, condition),
       kind: question.kind,
@@ -24,7 +25,7 @@ class GekanatorQuestionsController < ApplicationController
       source: question.source,
       priority_weight: question.priority_weight
     }
-    if question.kind == 'post_similarity' || question.kind == 'tag'
+    if question.kind == 'post_similarity'
       json[:example_answers] = example_answers_json(question)
     end
     json
@@ -48,8 +49,6 @@ class GekanatorQuestionsController < ApplicationController
       "title:length-at-least:#{ condition[:length].to_i + 1 }"
     when 'title-has-ascii'
       'title:ascii'
-    when 'title-contains'
-      "title:contains:#{ condition[:text] }"
     when 'post-similarity'
       "post-similarity:#{ question.id }"
     else
@@ -78,8 +77,6 @@ class GekanatorQuestionsController < ApplicationController
     case condition[:type]
     when 'title-length-at-least'
       "タイトルは #{ condition[:length] } 文字以上?"
-    when 'title-contains'
-      "題名に「#{ condition[:text] }」が含まれる?"
     else
       question.text
     end

backend/app/models/gekanator_question_example.rb

@@ -1,7 +1,7 @@
 class GekanatorQuestionExample < ApplicationRecord
   ANSWERS = GekanatorQuestionSuggestion::ANSWERS
   NON_UNKNOWN_ANSWERS = ANSWERS - ['unknown']
-  SOURCES = ['initial_suggestion', 'post_game_answer', 'post_game_extra'].freeze
+  SOURCES = ['initial_suggestion', 'post_game_extra'].freeze
 
   belongs_to :gekanator_question
   belongs_to :post
@@ -35,7 +35,7 @@ class GekanatorQuestionExample < ApplicationRecord
     self.answer_counts = counts
     self.sample_count = counts.values.sum
     self.gekanator_game = gekanator_game if gekanator_game.present?
-    self.source = source
+    self.source = source if new_record?
 
     apply_aggregated_answer!(preferred_answer: answer)
     self

backend/app/models/gekanator_question_suggestion.rb

@@ -1,4 +1,5 @@
 class GekanatorQuestionSuggestion < ApplicationRecord
+  MAX_QUESTIONS_PER_GAME = 3
   ANSWERS = ['yes', 'no', 'partial', 'probably_no', 'unknown'].freeze
 
   belongs_to :gekanator_game
@@ -9,4 +10,16 @@ class GekanatorQuestionSuggestion < ApplicationRecord
   validates :question_text, presence: true, length: { maximum: 1000 }
   validates :answer, presence: true, inclusion: { in: ANSWERS }
   validates :processed, inclusion: { in: [true, false] }
+  validate :question_suggestion_limit_per_game, on: :create
+
+  private
+
+  def question_suggestion_limit_per_game
+    return if gekanator_game_id.blank?
+
+    count = GekanatorQuestionSuggestion.where(gekanator_game_id:).count
+    if count >= MAX_QUESTIONS_PER_GAME
+      errors.add(:base, '質問追加数を超えてゐます．')
+    end
+  end
 end

backend/app/services/gekanator/question_suggestion_ai_converter.rb

@@ -1,15 +1,5 @@
 module Gekanator
   class QuestionSuggestionAiConverter
-    # Temporary heuristic converter for #361.
-    # This creates pending ai_generated questions without external LLM calls;
-    # accepted questions are still distributed only after admin approval.
-    TITLE_LENGTH_RE = /\Aタイトルは\s*(\d+)\s*文字以上[？?]\z/
-    ORIGINAL_YEAR_RE = /\Aオリジナルの投稿年は\s*(\d{4})\s*年[？?]\z/
-    ORIGINAL_MONTH_RE = /\Aオリジナルの投稿月は\s*(\d{1,2})\s*月[？?]\z/
-    ORIGINAL_MONTH_DAY_RE = /\Aオリジナルの投稿日は\s*(\d{1,2})\s*月\s*(\d{1,2})\s*日[？?]\z/
-    TITLE_CONTAINS_RE = /\A題名に「(.+?)」が含まれる[？?]\z/
-    SOURCE_RE = /\A(.+?)\s+の投稿を思[ひい]浮かべて[ゐい]る[？?]\z/
-
     def self.call(...) = new(...).call
 
     def initialize suggestion:, user:
@@ -18,151 +8,11 @@ module Gekanator
     end
 
     def call
-      suggestion.with_lock do
+      raise NotImplementedError, 'AI question conversion is not implemented yet.'
-        existing = existing_generated_question
-        return existing if existing
-
-        run = suggestion.gekanator_ai_runs.create!(
-            model: 'heuristic_converter_v1',
-            status: 'running',
-            input_tokens: 0,
-            output_tokens: 0,
-            estimated_cost_jpy: 0)
-
-        question_attributes = build_question
-        question =
-            question_attributes &&
-            GekanatorQuestion.create!(
-                **question_attributes,
-                source: 'ai_generated',
-                status: 'pending',
-                gekanator_question_suggestion: suggestion,
-                created_by: user)
-
-        run.update!(status: question ? 'succeeded' : 'failed')
-        question
-      end
-    rescue => error
-      run&.update!(status: 'failed') if run&.persisted? && run.status != 'failed'
-      raise error
     end
 
     private
 
     attr_reader :suggestion, :user
-
-    def existing_generated_question
-      suggestion
-          .gekanator_questions
-          .where(source: 'ai_generated')
-          .order(id: :desc)
-          .first
-    end
-
-    def build_question
-      text = normalized_text
-      return nil if text.blank?
-
-      structured_question_for(text) || post_similarity_question_for(text)
-    end
-
-    def normalized_text
-      suggestion.question_text.to_s.gsub(/[[:space:]]+/, ' ').strip
-    end
-
-    def structured_question_for text
-      case text
-      when TITLE_LENGTH_RE
-        length = Regexp.last_match(1).to_i
-        return nil if length <= 0
-
-        {
-          text:,
-          kind: 'title',
-          condition: {
-            type: 'title-length-at-least',
-            length:
-          },
-          priority_weight: 0.95
-        }
-      when /\A題名に英数字が混じって[ゐい]る[？?]\z/
-        {
-          text: '題名に英数字が混じってゐる?',
-          kind: 'title',
-          condition: { type: 'title-has-ascii' },
-          priority_weight: 0.95
-        }
-      when ORIGINAL_YEAR_RE
-        year = Regexp.last_match(1).to_i
-        {
-          text:,
-          kind: 'original_date',
-          condition: { type: 'original-year', year: },
-          priority_weight: 0.95
-        }
-      when ORIGINAL_MONTH_RE
-        month = Regexp.last_match(1).to_i
-        return nil unless month.between?(1, 12)
-
-        {
-          text:,
-          kind: 'original_date',
-          condition: { type: 'original-month', month: },
-          priority_weight: 0.95
-        }
-      when ORIGINAL_MONTH_DAY_RE
-        month = Regexp.last_match(1).to_i
-        day = Regexp.last_match(2).to_i
-        return nil unless month.between?(1, 12) && day.between?(1, 31)
-
-        {
-          text:,
-          kind: 'original_date',
-          condition: {
-            type: 'original-month-day',
-            monthDay: "#{ month }-#{ day }"
-          },
-          priority_weight: 0.95
-        }
-      when TITLE_CONTAINS_RE
-        title_text = Regexp.last_match(1).to_s.strip
-        return nil if title_text.blank?
-
-        {
-          text: "題名に「#{ title_text }」が含まれる?",
-          kind: 'title',
-          condition: { type: 'title-contains', text: title_text },
-          priority_weight: 0.95
-        }
-      when SOURCE_RE
-        host = Regexp.last_match(1).to_s.strip
-        return nil if host.blank?
-
-        {
-          text:,
-          kind: 'source',
-          condition: { type: 'source', host: },
-          priority_weight: 0.95
-        }
-      else
-        nil
-      end
-    end
-
-    def post_similarity_question_for text
-      return nil if suggestion.answer == 'unknown'
-
-      {
-        text:,
-        kind: 'post_similarity',
-        condition: {
-          type: 'post-similarity',
-          postId: suggestion.gekanator_game.correct_post_id,
-          answer: suggestion.answer,
-          threshold: 0.65
-        },
-        priority_weight: 1.0
-      }
-    end
   end
 end

backend/spec/requests/gekanator_games_spec.rb

@@ -52,16 +52,16 @@ RSpec.describe 'Gekanator games API', type: :request do
       expect(response).to have_http_status(:unprocessable_entity)
     end
 
-    it 'returns unauthorized without a user' do
+    it 'returns not found without an admin user' do
       post '/gekanator/games', params: {
           guessed_post_id: guessed_post.id,
           correct_post_id: guessed_post.id,
           answers: [] }
 
-      expect(response).to have_http_status(:unauthorized)
+      expect(response).to have_http_status(:not_found)
     end
 
-    it 'stores a game for a non-admin user' do
+    it 'returns not found for a non-admin user' do
       sign_in_as user
 
       post '/gekanator/games', params: {
@@ -69,8 +69,7 @@ RSpec.describe 'Gekanator games API', type: :request do
           correct_post_id: guessed_post.id,
           answers: [{ question_id: 'tag:1', answer: 'yes' }] }
 
-      expect(response).to have_http_status(:created)
+      expect(response).to have_http_status(:not_found)
-      expect(GekanatorGame.find(json['id']).user).to eq(user)
     end
   end
 end

backend/spec/requests/gekanator_learning_spec.rb

@@ -129,7 +129,7 @@ RSpec.describe 'Gekanator learning API', type: :request do
       expect(response).to have_http_status(:unprocessable_entity)
     end
 
-    it 'stores a game result for a non-admin user' do
+    it 'returns not found for a non-admin user' do
       sign_in_as member
 
       post '/gekanator/games', params: {
@@ -138,18 +138,7 @@ RSpec.describe 'Gekanator learning API', type: :request do
         answers: []
       }
 
-      expect(response).to have_http_status(:created)
+      expect(response).to have_http_status(:not_found)
-      expect(GekanatorGame.find(json['id']).user).to eq(member)
-    end
-
-    it 'returns unauthorized without a user' do
-      post '/gekanator/games', params: {
-        guessed_post_id: guessed_post.id,
-        correct_post_id: correct_post.id,
-        answers: []
-      }
-
-      expect(response).to have_http_status(:unauthorized)
     end
   end
 
@@ -272,57 +261,17 @@ RSpec.describe 'Gekanator learning API', type: :request do
       expect(response).to have_http_status(:unprocessable_entity)
     end
 
-    it 'allows a non-admin user to suggest a question for their own game' do
+    it 'returns not found for a non-admin user' do
-      member_game = GekanatorGame.create!(
-        user: member,
-        guessed_post: guessed_post,
-        correct_post: correct_post,
-        won: false,
-        question_count: 1,
-        answers: [{ 'question_id' => 'tag:1', 'answer' => 'yes' }]
-      )
       sign_in_as member
 
-      expect {
-        post '/gekanator/question_suggestions', params: {
-          gekanator_game_id: member_game.id,
-          question_text: 'member question?',
-          answer: 'yes'
-        }
-      }.to change { GekanatorQuestionSuggestion.count }.by(1)
-
-      expect(response).to have_http_status(:created)
-      expect(GekanatorQuestionSuggestion.last).to have_attributes(
-        gekanator_game_id: member_game.id,
-        user_id: member.id
-      )
-    end
-
-    it 'returns not found for another user game' do
-      sign_in_as member
-
-      expect {
       post '/gekanator/question_suggestions', params: {
         gekanator_game_id: game.id,
         question_text: 'member question?',
         answer: 'yes'
       }
-      }.not_to change { GekanatorQuestionSuggestion.count }
 
       expect(response).to have_http_status(:not_found)
     end
-
-    it 'returns unauthorized without a user' do
-      expect {
-        post '/gekanator/question_suggestions', params: {
-          gekanator_game_id: game.id,
-          question_text: 'member question?',
-          answer: 'yes'
-        }
-      }.not_to change { GekanatorQuestionSuggestion.count }
-
-      expect(response).to have_http_status(:unauthorized)
-    end
   end
 
   describe 'GET /gekanator/games/:id/extra_questions' do
@@ -428,38 +377,6 @@ RSpec.describe 'Gekanator learning API', type: :request do
       expect(response).to have_http_status(:ok)
       expect(json['questions'].map { _1['id'] }).to contain_exactly(accepted.id)
     end
-
-    it 'allows a non-admin user to fetch extra questions for their own game' do
-      member_game = GekanatorGame.create!(
-        user: member,
-        guessed_post: guessed_post,
-        correct_post: correct_post,
-        won: false,
-        question_count: 1,
-        answers: [{ 'question_id' => 'tag:1', 'answer' => 'yes' }]
-      )
-      accepted = create_post_similarity_question!(text: 'accepted?')
-      sign_in_as member
-
-      get "/gekanator/games/#{member_game.id}/extra_questions"
-
-      expect(response).to have_http_status(:ok)
-      expect(json['questions'].map { _1['id'] }).to include(accepted.id)
-    end
-
-    it 'returns not found for another user game' do
-      sign_in_as member
-
-      get "/gekanator/games/#{game.id}/extra_questions"
-
-      expect(response).to have_http_status(:not_found)
-    end
-
-    it 'returns unauthorized without a user' do
-      get "/gekanator/games/#{game.id}/extra_questions"
-
-      expect(response).to have_http_status(:unauthorized)
-    end
   end
 
   describe 'POST /gekanator/games/:id/extra_question_answers' do
@@ -586,69 +503,6 @@ RSpec.describe 'Gekanator learning API', type: :request do
 
       expect(response).to have_http_status(:unprocessable_entity)
     end
-
-    it 'allows a non-admin user to answer extra questions for their own game' do
-      member_game = GekanatorGame.create!(
-        user: member,
-        guessed_post: guessed_post,
-        correct_post: correct_post,
-        won: false,
-        question_count: 1,
-        answers: [{ 'question_id' => 'tag:1', 'answer' => 'yes' }]
-      )
-      question = create_post_similarity_question!(text: 'extra?')
-      sign_in_as member
-
-      expect {
-        post "/gekanator/games/#{member_game.id}/extra_question_answers", params: {
-          answers: [
-            {
-              question_id: question.id,
-              answer: 'yes'
-            }
-          ]
-        }
-      }.to change { GekanatorQuestionExample.count }.by(1)
-
-      expect(response).to have_http_status(:created)
-      expect(GekanatorQuestionExample.last).to have_attributes(
-        user_id: member.id,
-        gekanator_game_id: member_game.id
-      )
-    end
-
-    it 'returns not found for another user game' do
-      question = create_post_similarity_question!(text: 'extra?')
-      sign_in_as member
-
-      expect {
-        post "/gekanator/games/#{game.id}/extra_question_answers", params: {
-          answers: [
-            {
-              question_id: question.id,
-              answer: 'yes'
-            }
-          ]
-        }
-      }.not_to change { GekanatorQuestionExample.count }
-
-      expect(response).to have_http_status(:not_found)
-    end
-
-    it 'returns unauthorized without a user' do
-      question = create_post_similarity_question!(text: 'extra?')
-
-      post "/gekanator/games/#{game.id}/extra_question_answers", params: {
-        answers: [
-          {
-            question_id: question.id,
-            answer: 'yes'
-          }
-        ]
-      }
-
-      expect(response).to have_http_status(:unauthorized)
-    end
   end
 
   describe 'GET /gekanator/questions' do
@@ -754,33 +608,5 @@ RSpec.describe 'Gekanator learning API', type: :request do
         'length' => 21
       )
     end
-
-    it 'returns title-contains questions without authentication' do
-      GekanatorQuestion.create!(
-        text: '題名に「結束バンド」が含まれる?',
-        kind: 'title',
-        source: 'ai_generated',
-        status: 'accepted',
-        priority_weight: 0.95,
-        condition: {
-          type: 'title-contains',
-          text: '結束バンド'
-        },
-        created_by: admin
-      )
-
-      get '/gekanator/questions'
-
-      expect(response).to have_http_status(:ok)
-      question_json = json['questions'].find { _1['id'] == 'title:contains:結束バンド' }
-      expect(question_json).to include(
-        'text' => '題名に「結束バンド」が含まれる?',
-        'kind' => 'title'
-      )
-      expect(question_json['condition']).to include(
-        'type' => 'title-contains',
-        'text' => '結束バンド'
-      )
-    end
   end
 end

backend/spec/services/gekanator/question_suggestion_ai_converter_spec.rb

@@ -1,112 +0,0 @@
-require 'rails_helper'
-
-RSpec.describe Gekanator::QuestionSuggestionAiConverter do
-  let(:user) { create(:user, :member) }
-  let(:guessed_post) { Post.create!(title: 'guess', url: 'https://example.com/guess') }
-  let(:correct_post) { Post.create!(title: 'correct', url: 'https://example.com/correct') }
-  let(:game) do
-    GekanatorGame.create!(
-      user: user,
-      guessed_post: guessed_post,
-      correct_post: correct_post,
-      won: false,
-      question_count: 1,
-      answers: [{ 'question_id' => 'tag:1', 'answer' => 'yes' }]
-    )
-  end
-
-  def create_suggestion!(question_text:, answer: 'yes')
-    GekanatorQuestionSuggestion.create!(
-      gekanator_game: game,
-      user: user,
-      question_text: question_text,
-      answer: answer
-    )
-  end
-
-  it 'converts title-contains suggestions to pending ai-generated questions' do
-    suggestion = create_suggestion!(question_text: '題名に「結束バンド」が含まれる?')
-
-    expect {
-      described_class.call(suggestion: suggestion, user: user)
-    }.to change { GekanatorQuestion.count }.by(1)
-      .and change { GekanatorAiRun.count }.by(1)
-
-    question = GekanatorQuestion.last
-    expect(question).to have_attributes(
-      text: '題名に「結束バンド」が含まれる?',
-      kind: 'title',
-      source: 'ai_generated',
-      status: 'pending',
-      priority_weight: 0.95,
-      gekanator_question_suggestion_id: suggestion.id,
-      created_by_id: user.id
-    )
-    expect(question.condition).to include(
-      'type' => 'title-contains',
-      'text' => '結束バンド'
-    )
-    expect(GekanatorAiRun.last).to have_attributes(
-      gekanator_question_suggestion_id: suggestion.id,
-      model: 'heuristic_converter_v1',
-      status: 'succeeded'
-    )
-  end
-
-  it 'converts concrete non-unknown suggestions to post-similarity questions' do
-    suggestion = create_suggestion!(
-      question_text: '喜多ちゃんが泣いてる?',
-      answer: 'partial'
-    )
-
-    question = described_class.call(suggestion: suggestion, user: user)
-
-    expect(question).to have_attributes(
-      text: '喜多ちゃんが泣いてる?',
-      kind: 'post_similarity',
-      source: 'ai_generated',
-      status: 'pending',
-      priority_weight: 1.0
-    )
-    expect(question.condition).to include(
-      'type' => 'post-similarity',
-      'postId' => correct_post.id,
-      'answer' => 'partial',
-      'threshold' => 0.65
-    )
-  end
-
-  it 'records a failed run when the suggestion cannot be converted' do
-    suggestion = create_suggestion!(
-      question_text: 'よく分からない質問?',
-      answer: 'unknown'
-    )
-
-    expect {
-      expect(described_class.call(suggestion: suggestion, user: user)).to be_nil
-    }.not_to change { GekanatorQuestion.count }
-
-    expect(GekanatorAiRun.last).to have_attributes(
-      gekanator_question_suggestion_id: suggestion.id,
-      status: 'failed'
-    )
-  end
-
-  it 'returns an existing generated question without creating a duplicate run' do
-    suggestion = create_suggestion!(question_text: 'タイトルは 10 文字以上?')
-    existing = GekanatorQuestion.create!(
-      text: 'タイトルは 10 文字以上?',
-      kind: 'title',
-      source: 'ai_generated',
-      status: 'pending',
-      priority_weight: 0.95,
-      condition: { type: 'title-length-at-least', length: 10 },
-      gekanator_question_suggestion: suggestion,
-      created_by: user
-    )
-
-    expect {
-      expect(described_class.call(suggestion: suggestion, user: user)).to eq(existing)
-    }.not_to change { GekanatorAiRun.count }
-  end
-end

frontend/src/App.tsx

@@ -40,7 +40,7 @@ import WikiHistoryPage from '@/pages/wiki/WikiHistoryPage'
 import WikiNewPage from '@/pages/wiki/WikiNewPage'
 import WikiSearchPage from '@/pages/wiki/WikiSearchPage'
 
-import type { Dispatch, FC, SetStateAction } from 'react'
+import type { Dispatch, FC, ReactNode, SetStateAction } from 'react'
 
 import type { User } from '@/types'
 
@@ -81,7 +81,10 @@ const RouteTransitionWrapper = ({ user, setUser }: {
 	  <Route path="/users/settings" element={<SettingPage user={user} setUser={setUser}/>}/>
 	  <Route path="/settings" element={<Navigate to="/users/settings" replace/>}/>
 	  <Route path="/tos" element={<TOSPage/>}/>
-	  <Route path="/gekanator" element={<GekanatorPage user={user}/>}/>
+	  <Route path="/gekanator" element={
+	      <AdminOnly user={user}>
+		<GekanatorPage/>
+	      </AdminOnly>}/>
 	  <Route path="/more" element={<MorePage/>}/>
 	  <Route path="*" element={<NotFound/>}/>
 	</Routes>
@@ -89,6 +92,16 @@ const RouteTransitionWrapper = ({ user, setUser }: {
 }
 
 
+const AdminOnly = ({ user, children }: {
+    user:      User | null
+    children:  ReactNode }) => {
+  if (user?.role !== 'admin')
+    return <NotFound/>
+
+  return <>{children}</>
+}
+
+
 const PostDetailRoute = ({ user }: { user: User | null }) => {
   const location = useLocation ()
   const key = location.pathname

frontend/src/components/TopNav.tsx

@@ -66,8 +66,7 @@ export const menuOutline = ({ tag, wikiId, user, pathName }: {
 	  { name: '履歴', to: `/wiki/changes?id=${ wikiId }`, visible: wikiPageFlg },
 	  { name: '編輯', to: `/wiki/${ wikiId || wikiTitle }/edit`, visible: wikiPageFlg }] },
       { name: 'おたのしみ', visible: false, subMenu: [
-	  { name: '上映会 (β)', to: '/theatres/1' },
+	  { name: '上映会 (β)', to: '/theatres/1' }] },
-	  { name: 'グカネータ (β)', to: '/gekanator' }] },
       { name: 'ユーザ', to: '/users/settings', visible: false, subMenu: [
 	  { name: '一覧', to: '/users', visible: false },
 	  { name: 'お前', to: `/users/${ user?.id }`, visible: false },

frontend/src/lib/gekanator.test.ts

@@ -4,7 +4,6 @@ import { apiPost } from '@/lib/api'
 import {
   buildGekanatorQuestions,
   expectedAnswerForQuestion,
-  questionIdForCondition,
   restoreGekanatorQuestion,
   saveGekanatorExtraQuestionAnswers,
   saveGekanatorGame,
@@ -165,27 +164,6 @@ describe('expectedAnswerForQuestion', () => {
 
     expect(expectedAnswerForQuestion(question, post({ id: 1, title: 'short' }))).toBe('no')
   })
-
-  it('returns yes for matching title-contains questions', () => {
-    const question: StoredGekanatorQuestion = {
-      id: 'title:contains:結束バンド',
-      text: '題名に「結束バンド」が含まれる?',
-      kind: 'title',
-      condition: {
-        type: 'title-contains',
-        text: '結束バンド',
-      },
-    }
-
-    expect(expectedAnswerForQuestion(
-      question,
-      post({ title: '結束バンドのライブ' }),
-    )).toBe('yes')
-    expect(expectedAnswerForQuestion(
-      question,
-      post({ title: '後藤ひとりの休日' }),
-    )).toBe('no')
-  })
 })
 
 describe('restoreGekanatorQuestion', () => {
@@ -270,21 +248,6 @@ describe('restoreGekanatorQuestion', () => {
     expect(question.test(post({ title: 'x'.repeat(20) }))).toBe(false)
     expect(question.test(post({ title: 'x'.repeat(21) }))).toBe(true)
   })
-
-  it('restores title-contains questions with a title matcher', () => {
-    const question = restoreGekanatorQuestion({
-      id: 'title:contains:結束バンド',
-      text: '題名に「結束バンド」が含まれる?',
-      kind: 'title',
-      condition: {
-        type: 'title-contains',
-        text: '結束バンド',
-      },
-    })
-
-    expect(question.test(post({ title: '結束バンドのライブ' }))).toBe(true)
-    expect(question.test(post({ title: '後藤ひとりの休日' }))).toBe(false)
-  })
 })
 
 describe('buildGekanatorQuestions', () => {
@@ -301,59 +264,6 @@ describe('buildGekanatorQuestions', () => {
     expect(titleQuestion?.text).toMatch(/^タイトルは \d+ 文字以上\?$/)
     expect(titleQuestion?.id).toMatch(/^title:length-at-least:\d+$/)
   })
-
-  it('builds title-contains questions from repeated title words', () => {
-    const questions = buildGekanatorQuestions([
-      post({ id: 1, title: '結束バンド ライブ' }),
-      post({ id: 2, title: '結束バンド 新曲' }),
-      post({ id: 3, title: '後藤ひとり 練習' }),
-      post({ id: 4, title: '伊地知虹夏 練習' }),
-    ])
-
-    const titleContainsQuestion = questions.find(question =>
-      question.condition.type === 'title-contains'
-      && question.condition.text === '結束バンド')
-
-    expect(titleContainsQuestion).toMatchObject({
-      id: 'title:contains:結束バンド',
-      text: '題名に「結束バンド」が含まれる?',
-      kind: 'title',
-      source: 'default',
-      priorityWeight: .96,
-    })
-    expect(titleContainsQuestion?.test(post({ title: '結束バンドのライブ' }))).toBe(true)
-    expect(titleContainsQuestion?.test(post({ title: '廣井きくりのライブ' }))).toBe(false)
-  })
-
-  it('honors question caps and title-contains toggles', () => {
-    const posts = [
-      post({ id: 1, title: '結束バンド ライブ' }),
-      post({ id: 2, title: '結束バンド 新曲' }),
-      post({ id: 3, title: '後藤ひとり 練習' }),
-      post({ id: 4, title: '伊地知虹夏 練習' }),
-    ]
-
-    const capped = buildGekanatorQuestions(posts, {
-      titleContainsCap: 1,
-      totalQuestionCap: 1,
-    })
-    const withoutTitleContains = buildGekanatorQuestions(posts, {
-      includeTitleContains: false,
-    })
-
-    expect(capped).toHaveLength(1)
-    expect(withoutTitleContains.some(question =>
-      question.condition.type === 'title-contains')).toBe(false)
-  })
-})
-
-describe('questionIdForCondition', () => {
-  it('builds stable ids for title-contains questions', () => {
-    expect(questionIdForCondition({
-      type: 'title-contains',
-      text: '結束バンド',
-    })).toBe('title:contains:結束バンド')
-  })
 })
 
 describe('Gekanator API writers', () => {

frontend/src/lib/gekanator.ts

@@ -13,7 +13,6 @@ export type GekanatorAnswerLog = {
     questionId:       string
     questionText:     string
     questionCondition?:  GekanatorQuestionCondition
-    questionMode?:    'normal' | 'winning_run'
     answer:           GekanatorAnswerValue
     originalAnswer:   GekanatorAnswerValue }
 
@@ -30,8 +29,6 @@ export type GekanatorQuestionSource =
     | 'ai_generated'
     | 'admin_curated'
 
-export type GekanatorPerformanceMode = 'normal'
-
 export type GekanatorQuestionCondition =
     | { type: 'tag'; key: string }
     | { type: 'source'; host: string }
@@ -41,7 +38,6 @@ export type GekanatorQuestionCondition =
     | { type: 'title-length-at-least'; length: number }
     | { type: 'title-length-greater-than'; length: number }
     | { type: 'title-has-ascii' }
-    | { type: 'title-contains'; text: string }
     | {
 	  type: 'post-similarity'
 	  postId: number
@@ -62,7 +58,6 @@ export type GekanatorExtraQuestion = {
     priorityWeight:  number }
 
 export type StoredGekanatorQuestion = {
-    recordId?:       number
     id:              string
     text:            string
     kind:            GekanatorQuestionKind
@@ -72,7 +67,6 @@ export type StoredGekanatorQuestion = {
     exampleAnswers?: Record<`${ number }`, GekanatorAnswerValue> }
 
 export type GekanatorQuestion = {
-    recordId?:       number
     id:              string
     text:            string
     kind:            GekanatorQuestionKind
@@ -82,13 +76,6 @@ export type GekanatorQuestion = {
     exampleAnswers?: Record<`${ number }`, GekanatorAnswerValue>
     test:            (post: Post) => boolean }
 
-export type BuildGekanatorQuestionsOptions = {
-    includeTitleContains?: boolean
-    tagQuestionCap?: number
-    titleContainsCap?: number
-    totalQuestionCap?: number
-}
-
 
 export const normalizeTitleLengthCondition = (
     condition:  GekanatorQuestionCondition,
@@ -140,8 +127,6 @@ export const questionIdForCondition = (
     return `title:length-at-least:${ titleLengthMinimumForCondition (condition) }`
   case 'title-has-ascii':
     return 'title:ascii'
-  case 'title-contains':
-    return `title:contains:${ condition.text }`
   }
 }
 
@@ -150,7 +135,7 @@ const directExampleAnswerFor = (
     question:  StoredGekanatorQuestion,
     post:      Post,
 ): GekanatorAnswerValue | null => {
-  if (question.kind !== 'post_similarity' && question.kind !== 'tag')
+  if (question.kind !== 'post_similarity')
     return null
 
   const direct = question.exampleAnswers?.[String (post.id) as `${ number }`]
@@ -307,8 +292,6 @@ const questionMatches = (
     return (post.title?.length ?? 0) > question.condition.length
   case 'title-has-ascii':
     return /[A-Za-z0-9]/.test (post.title ?? '')
-  case 'title-contains':
-    return (post.title ?? '').includes (question.condition.text)
   case 'post-similarity':
     return false
   }
@@ -336,7 +319,6 @@ export const expectedAnswerForQuestion = (
   case 'title-length-at-least':
   case 'title-length-greater-than':
   case 'title-has-ascii':
-  case 'title-contains':
     return questionMatches (post, question) ? 'yes' : 'no'
   case 'post-similarity':
     return null
@@ -350,7 +332,6 @@ export const restoreGekanatorQuestion = (
   const normalizedCondition = normalizeTitleLengthCondition (question.condition)
   const normalizedQuestion = {
       ...question,
-      recordId: question.recordId,
       id: normalizedCondition.type === 'title-length-at-least'
 	  ? `title:length-at-least:${ normalizedCondition.length }`
 	  : question.id,
@@ -370,7 +351,6 @@ export const storeGekanatorQuestion = (
   id: question.condition.type === 'title-length-greater-than'
       ? `title:length-at-least:${ question.condition.length + 1 }`
       : question.id,
-  recordId: question.recordId,
   text: question.text,
   kind: question.kind,
   condition: normalizeTitleLengthCondition (question.condition),
@@ -402,16 +382,7 @@ export const fetchGekanatorExtraQuestions = async (
 }
 
 
-export const buildGekanatorQuestions = (
+export const buildGekanatorQuestions = (posts: Post[]): GekanatorQuestion[] => {
-    posts:    Post[],
-    options:  BuildGekanatorQuestionsOptions = { },
-): GekanatorQuestion[] => {
-  const {
-      includeTitleContains = true,
-      tagQuestionCap = 192,
-      titleContainsCap = 24,
-      totalQuestionCap = Number.POSITIVE_INFINITY,
-  } = options
   const tagCounts = countBy (posts.flatMap (post =>
       post.tags
       .filter (tag =>
@@ -433,31 +404,17 @@ export const buildGekanatorQuestions = (
       .map (originalMonthDayOf)
       .filter ((monthDay): monthDay is string => monthDay !== null))
   const titleLengthMedian = median (posts.map (post => post.title?.length ?? 0))
-  const titleWordCounts =
-      includeTitleContains
-	? countBy (
-	    posts.flatMap (post =>
-		Array.from (
-		    new Set (
-			(post.title ?? '')
-			.match (
-			    /[\p{Script=Han}\p{Script=Hiragana}\p{Script=Katakana}A-Za-z0-9]{2,}/gu)
-			?? []))))
-	: new Map<string, number> ()
 
-  const usefulEntries = <T extends string | number> (
+  const usefulEntries = <T extends string | number> (counts: Map<T, number>) =>
-      counts:  Map<T, number>,
-      cap:     number,
-  ) =>
       [...counts.entries ()]
       .filter (([, count]) => count > 0 && count < posts.length)
       .sort ((a, b) => Math.abs (posts.length / 2 - a[1])
 	       - Math.abs (posts.length / 2 - b[1]))
-      .slice (0, cap)
+      .slice (0, 80)
 
-  const tagQuestions = usefulEntries (tagCounts, Math.max (tagQuestionCap, 80))
+  const tagQuestions = usefulEntries (tagCounts)
       .filter (([, count]) => count >= 2 && count <= Math.max (2, posts.length * .7))
-      .slice (0, tagQuestionCap)
+      .slice (0, 80)
       .map (([key]) => {
 	const { category, name } = tagFromQuestionKey (String (key))
 	const label = category === 'nico' ? nicoTagLabel (name) : name
@@ -472,7 +429,7 @@ export const buildGekanatorQuestions = (
 	    test: (post: Post) => questionableTag (post, String (key)) }
       })
 
-  const sourceQuestions = usefulEntries (hosts, 20)
+  const sourceQuestions = usefulEntries (hosts)
       .filter (([, count]) => count >= 2 && count <= Math.max (2, posts.length * .7))
       .slice (0, 20)
       .map (([host]) => ({
@@ -484,7 +441,7 @@ export const buildGekanatorQuestions = (
 	  priorityWeight: 1,
 	  test: (post: Post) => hostOf (post) === host }))
 
-  const originalYearQuestions = usefulEntries (originalYears, 20)
+  const originalYearQuestions = usefulEntries (originalYears)
       .filter (([, count]) => count >= 2 && count <= Math.max (2, posts.length * .7))
       .slice (0, 20)
       .map (([year]) => ({
@@ -496,7 +453,7 @@ export const buildGekanatorQuestions = (
 	  priorityWeight: 1,
 	  test: (post: Post) => originalYearOf (post) === year }))
 
-  const originalMonthQuestions = usefulEntries (originalMonths, 20)
+  const originalMonthQuestions = usefulEntries (originalMonths)
       .filter (([, count]) => count >= 2 && count <= Math.max (2, posts.length * .7))
       .slice (0, 20)
       .map (([month]) => ({
@@ -508,7 +465,7 @@ export const buildGekanatorQuestions = (
 	  priorityWeight: 1,
 	  test: (post: Post) => originalMonthOf (post) === month }))
 
-  const originalMonthDayQuestions = usefulEntries (originalMonthDays, 20)
+  const originalMonthDayQuestions = usefulEntries (originalMonthDays)
       .filter (([, count]) => count >= 2 && count <= Math.max (2, posts.length * .7))
       .slice (0, 20)
       .map (([monthDay]) => {
@@ -548,23 +505,6 @@ export const buildGekanatorQuestions = (
 	const no = posts.length - yes
 	return yes >= 2 && no >= 2 && yes <= posts.length * .7 && no <= posts.length * .7
       })
-  const titleContainsQuestions =
-      includeTitleContains
-	? usefulEntries (titleWordCounts, titleContainsCap)
-	    .filter (([word, count]) =>
-		String (word).length <= 24
-		&& count >= 2
-		&& count <= Math.max (2, posts.length * .7))
-	    .slice (0, titleContainsCap)
-	    .map (([word]) => ({
-		id:   `title:contains:${ word }`,
-		text: `題名に「${ word }」が含まれる?`,
-		kind: 'title' as const,
-		condition: { type: 'title-contains' as const, text: String (word) },
-		source: 'default' as const,
-		priorityWeight: .96,
-		test: (post: Post) => (post.title ?? '').includes (String (word)) }))
-	: []
 
   return [
       ...sourceQuestions,
@@ -572,8 +512,7 @@ export const buildGekanatorQuestions = (
       ...originalMonthQuestions,
       ...originalMonthDayQuestions,
       ...titleQuestions,
-      ...titleContainsQuestions,
+      ...tagQuestions]
-      ...tagQuestions].slice (0, totalQuestionCap)
 }
 
 
@@ -585,7 +524,7 @@ export const saveGekanatorGame = async ({
     guessedPostId:  number
     correctPostId:  number
     answers:        GekanatorAnswerLog[]
-}): Promise<{ id: number; learnedExampleCount: number }> =>
+}): Promise<{ id: number }> =>
     await apiPost ('/gekanator/games', {
 	guessed_post_id: guessedPostId,
 	correct_post_id: correctPostId,
@@ -599,18 +538,15 @@ export const saveGekanatorGame = async ({
 
 export const saveGekanatorQuestionSuggestion = async ({
     gekanatorGameId,
-    existingQuestionId,
     questionText,
     answer,
 }: {
     gekanatorGameId:  number
-    existingQuestionId?: number
+    questionText:     string
-    questionText?:    string
     answer:           GekanatorAnswerValue
 }): Promise<{ id: number; count: number }> =>
     await apiPost ('/gekanator/question_suggestions', {
 	gekanator_game_id: gekanatorGameId,
-	existing_question_id: existingQuestionId,
 	question_text: questionText,
 	answer })
 

frontend/src/lib/gekanatorCandidateRecovery.test.ts

@@ -145,30 +145,7 @@ describe('recoverCandidatePosts', () => {
 
     expect(recovered?.recoveryStepCount).toBe (1)
     expect([...(recovered?.recoveredCandidatePosts.keys () ?? [])])
-      .toEqual ([8, 7, 6, 5, 4])
+      .toEqual ([8, 7, 6, 5, 4, 3, 2])
     expect(recovered?.recoveredCandidatePosts.get (7)).toBe (2)
   })
-
-  it('does not add posts when recovered and eligible candidates already hit the target', () => {
-    const posts = Array.from ({ length: 10 }, (_value, index) => post (index + 1))
-    const scores = new Map (posts.map (candidate => [candidate.id, candidate.id]))
-
-    const recovered = recoverCandidatePosts ({
-	posts,
-	scores,
-	rejectedPostIds: new Set (),
-	recoveredCandidatePosts: new Map ([
-	    [1, 1],
-	    [2, 1],
-	    [3, 1],
-	]),
-	eligiblePostIds: new Set ([4, 5, 6]),
-	answerCountAtRecovery: 2,
-	recoveryStepCount: 0,
-    })
-
-    expect(recovered?.recoveryStepCount).toBe (1)
-    expect([...(recovered?.recoveredCandidatePosts.keys () ?? [])])
-      .toEqual ([1, 2, 3])
-  })
 })

frontend/src/lib/gekanatorCandidateRecovery.ts

@@ -13,16 +13,6 @@ export type RecoveredCandidatePost = {
     answerCountAtRecovery: number }
 
 
-const questionIsFactLikeForHardFiltering = (
-    question:  GekanatorQuestion,
-): boolean =>
-    !(question.kind === 'post_similarity'
-      || (
-	  question.kind === 'tag'
-	  && question.condition.type === 'tag'
-	  && !(question.condition.key.startsWith ('nico:'))))
-
-
 export const candidatePostsFor = ({
     posts,
     questions,
@@ -56,8 +46,6 @@ export const candidatePostsFor = ({
       const question = questionById.get (answer.questionId)
       if (!(question))
 	return true
-      if (!(questionIsFactLikeForHardFiltering (question)))
-	return true
 
       switch (answer.answer)
       {
@@ -83,9 +71,6 @@ export const hardFilteredPostsForAnswer = ({
     question:  GekanatorQuestion
     answer:    GekanatorAnswerValue
 }): Post[] => {
-  if (!(questionIsFactLikeForHardFiltering (question)))
-    return posts
-
   if (answer === 'unknown')
     return posts
 
@@ -115,7 +100,7 @@ export const allConcreteAnswerOptionsExhausted = (
 }
 
 
-const nextRecoveryTargetSize = (recoveryStepCount: number): number =>
+const nextRecoveryBatchSize = (recoveryStepCount: number): number =>
     6 * (2 ** recoveryStepCount)
 
 
@@ -140,16 +125,6 @@ export const recoverCandidatePosts = ({
     recoveryStepCount:       number
 } | null => {
   const recovered = new Map (recoveredCandidatePosts)
-  const targetSize = nextRecoveryTargetSize (recoveryStepCount)
-  const countedPostIds = new Set ([
-      ...eligiblePostIds,
-      ...recovered.keys ()])
-  const addCount = targetSize - countedPostIds.size
-  if (addCount <= 0)
-    return {
-	recoveredCandidatePosts: recovered,
-	recoveryStepCount: recoveryStepCount + 1 }
-
   const candidates = posts
       .filter (post =>
 	  !(rejectedPostIds.has (post.id))
@@ -158,7 +133,7 @@ export const recoverCandidatePosts = ({
       .sort ((a, b) =>
 	  (scores.get (b.id) ?? Number.NEGATIVE_INFINITY)
 	      - (scores.get (a.id) ?? Number.NEGATIVE_INFINITY))
-      .slice (0, addCount)
+      .slice (0, nextRecoveryBatchSize (recoveryStepCount))
 
   if (candidates.length === 0)
     return null

frontend/src/types.ts

@@ -139,10 +139,6 @@ export type Post = {
     title:                  string | null
     thumbnail:              string | null
     thumbnailBase:          string | null
-    postSimilarityEdges?:   {
-			      targetPostId: number
-			      cos:          number
-			  }[]
     tags:                   Tag[]
     parentPosts?:           Post[]
     childPosts?:            Post[]