feat: context, not config

spec/error_boundaries_spec.lua

@@ -9,9 +9,6 @@ describe('Error boundary handling', function()
       log = function(msg, level)
         table.insert(logged_messages, { msg = msg, level = level })
       end,
-      progress = function(msg)
-        table.insert(logged_messages, { msg = msg, level = vim.log.levels.INFO })
-      end,
       set_config = function() end,
     }
     package.loaded['cp.log'] = mock_logger

spec/panel_spec.lua

@@ -88,20 +88,22 @@ describe('Panel integration', function()
     state.set_contest_id('2146')
     state.set_problem_id('b')
 
-    local problem = require('cp.problem')
     local config_module = require('cp.config')
     local processed_config = config_module.setup({
       contests = { codeforces = { cpp = { extension = 'cpp' } } },
     })
-    local ctx = problem.create_context('codeforces', '2146', 'b', processed_config)
+    local cp_state = require('cp.state')
+    cp_state.set_platform('codeforces')
+    cp_state.set_contest_id('2146')
+    cp_state.set_problem_id('b')
 
     assert.has_no_errors(function()
-      run.load_test_cases(ctx, state)
+      run.load_test_cases(state)
     end)
 
     local fake_state_data = { platform = 'codeforces', contest_id = '2146', problem_id = 'b' }
     assert.has_errors(function()
-      run.load_test_cases(ctx, fake_state_data)
+      run.load_test_cases(fake_state_data)
     end)
   end)
 end)

spec/problem_spec.lua

@@ -1,146 +0,0 @@
-describe('cp.problem', function()
-  local problem
-  local spec_helper = require('spec.spec_helper')
-
-  before_each(function()
-    spec_helper.setup()
-    problem = require('cp.problem')
-  end)
-
-  after_each(function()
-    spec_helper.teardown()
-  end)
-
-  describe('create_context', function()
-    local base_config = {
-      contests = {
-        atcoder = {
-          default_language = 'cpp',
-          cpp = { extension = 'cpp' },
-          python = { extension = 'py' },
-        },
-        codeforces = {
-          default_language = 'cpp',
-          cpp = { extension = 'cpp' },
-        },
-      },
-    }
-
-    it('creates basic context with required fields', function()
-      local context = problem.create_context('atcoder', 'abc123', 'a', base_config)
-
-      assert.equals('atcoder', context.contest)
-      assert.equals('abc123', context.contest_id)
-      assert.equals('a', context.problem_id)
-      assert.equals('abc123a', context.problem_name)
-      assert.equals('abc123a.cpp', context.source_file)
-      assert.equals('build/abc123a.run', context.binary_file)
-      assert.equals('io/abc123a.cpin', context.input_file)
-      assert.equals('io/abc123a.cpout', context.output_file)
-      assert.equals('io/abc123a.expected', context.expected_file)
-    end)
-
-    it('handles context without problem_id', function()
-      local context = problem.create_context('codeforces', '1933', nil, base_config)
-
-      assert.equals('codeforces', context.contest)
-      assert.equals('1933', context.contest_id)
-      assert.is_nil(context.problem_id)
-      assert.equals('1933', context.problem_name)
-      assert.equals('1933.cpp', context.source_file)
-      assert.equals('build/1933.run', context.binary_file)
-    end)
-
-    it('uses default language from contest config', function()
-      local context = problem.create_context('atcoder', 'abc123', 'a', base_config)
-      assert.equals('abc123a.cpp', context.source_file)
-    end)
-
-    it('respects explicit language parameter', function()
-      local context = problem.create_context('atcoder', 'abc123', 'a', base_config, 'python')
-      assert.equals('abc123a.py', context.source_file)
-    end)
-
-    it('uses custom filename function when provided', function()
-      local config_with_custom = vim.tbl_deep_extend('force', base_config, {
-        filename = function(contest, contest_id, problem_id)
-          return contest .. '_' .. contest_id .. (problem_id and ('_' .. problem_id) or '')
-        end,
-      })
-
-      local context = problem.create_context('atcoder', 'abc123', 'a', config_with_custom)
-      assert.equals('atcoder_abc123_a.cpp', context.source_file)
-      assert.equals('atcoder_abc123_a', context.problem_name)
-    end)
-
-    it('validates required parameters', function()
-      assert.has_error(function()
-        problem.create_context(nil, 'abc123', 'a', base_config)
-      end)
-
-      assert.has_error(function()
-        problem.create_context('atcoder', nil, 'a', base_config)
-      end)
-
-      assert.has_error(function()
-        problem.create_context('atcoder', 'abc123', 'a', nil)
-      end)
-    end)
-
-    it('validates contest exists in config', function()
-      assert.has_error(function()
-        problem.create_context('invalid_contest', 'abc123', 'a', base_config)
-      end)
-    end)
-
-    it('validates language exists in contest config', function()
-      assert.has_error(function()
-        problem.create_context('atcoder', 'abc123', 'a', base_config, 'invalid_language')
-      end)
-    end)
-
-    it('validates default language exists', function()
-      local bad_config = {
-        contests = {
-          test_contest = {
-            default_language = 'nonexistent',
-          },
-        },
-      }
-
-      assert.has_error(function()
-        problem.create_context('test_contest', 'abc123', 'a', bad_config)
-      end)
-    end)
-
-    it('validates language extension is configured', function()
-      local bad_config = {
-        contests = {
-          test_contest = {
-            default_language = 'cpp',
-            cpp = {},
-          },
-        },
-      }
-
-      assert.has_error(function()
-        problem.create_context('test_contest', 'abc123', 'a', bad_config)
-      end)
-    end)
-
-    it('handles complex contest and problem ids', function()
-      local context = problem.create_context('atcoder', 'arc123', 'f', base_config)
-      assert.equals('arc123f', context.problem_name)
-      assert.equals('arc123f.cpp', context.source_file)
-      assert.equals('build/arc123f.run', context.binary_file)
-    end)
-
-    it('generates correct io file paths', function()
-      local context = problem.create_context('atcoder', 'abc123', 'a', base_config)
-
-      assert.equals('io/abc123a.cpin', context.input_file)
-      assert.equals('io/abc123a.cpout', context.output_file)
-      assert.equals('io/abc123a.expected', context.expected_file)
-    end)
-  end)
-end)

spec/spec_helper.lua

@@ -6,9 +6,6 @@ local mock_logger = {
   log = function(msg, level)
     table.insert(M.logged_messages, { msg = msg, level = level })
   end,
-  progress = function(msg)
-    table.insert(M.logged_messages, { msg = msg, level = vim.log.levels.INFO })
-  end,
   set_config = function() end,
 }
 
@@ -83,10 +80,11 @@ end
 
 function M.mock_scraper_success()
   package.loaded['cp.scrape'] = {
-    scrape_problem = function(ctx)
+    scrape_problem = function()
+      local state = require('cp.state')
       return {
         success = true,
-        problem_id = ctx.problem_id,
+        problem_id = state.get_problem_id(),
         test_cases = {
           { input = '1 2', expected = '3' },
           { input = '3 4', expected = '7' },