JavaZeroo · Oct 26, 2026 · Oct 26, 2026 · Oct 26, 2026 · Oct 26, 2026 · Oct 26, 2026
diff --git a/.github/workflows/alpha-release.yml b/.github/workflows/alpha-release.yml
@@ -58,6 +58,9 @@ jobs:
       - name: Build release candidate and test helpers
         timeout-minutes: 10
         run: cmake --build build-alpha --config Release --parallel 2
+      - name: Prepare fixed hosted local shell fixture
+        timeout-minutes: 7
+        run: python -m tools.prepare_hosted_shells --out local/alpha/hosted-shells
       - name: Require complete CTest including actual system clipboard
         id: ctest
         timeout-minutes: 20
@@ -182,6 +185,7 @@ jobs:
             dist/build-info.json
             local/alpha/smoke/validation.json
             local/alpha/test-summary.json
+            local/alpha/hosted-shells/summary.json
       - name: Preserve bounded public package diagnostics on failure
         if: failure()
         uses: actions/upload-artifact@cf430e030ddbb5b0abf93d22962f4752f3646cd9 # v7.0.2
@@ -192,6 +196,7 @@ jobs:
           path: |
             local/alpha/smoke/validation.json
             local/alpha/test-summary.json
+            local/alpha/hosted-shells/summary.json
       - name: Preserve explicit system workflow evidence allowlist
         if: always()
         uses: actions/upload-artifact@cf430e030ddbb5b0abf93d22962f4752f3646cd9 # v7.0.2

diff --git a/.github/workflows/build.yml b/.github/workflows/build.yml
@@ -37,6 +37,19 @@ jobs:
         run: cmake -S . -B build -DCMAKE_BUILD_TYPE=Release
       - name: Build
         run: cmake --build build --config Release --parallel 2
+      - name: Verify shell preparation guards and oracles
+        run: python -m unittest tools.test_prepare_hosted_shells tools.test_owned_job_cleanup -v
+      - name: Prepare hosted Windows shell prerequisites
+        if: runner.os == 'Windows'
+        run: python -m tools.prepare_hosted_shells --out local/hosted-shells
+      - name: Preserve sanitized shell preparation result
+        if: always() && runner.os == 'Windows'
+        uses: actions/upload-artifact@cf430e030ddbb5b0abf93d22962f4752f3646cd9 # v7.0.2
+        with:
+          name: hosted-shell-preparation
+          retention-days: 14
+          if-no-files-found: warn
+          path: local/hosted-shells/summary.json
       - name: Test
         env:
           TERMFORGE_REQUIRE_SYSTEM_CLIPBOARD: ${{ runner.os == 'Windows' && '1' || '0' }}
@@ -55,6 +68,7 @@ jobs:
             build/test-artifacts/selection-context/
             build/test-artifacts/text-actions/
             build/test-artifacts/raw-console-receiver/
+            build/test-artifacts/conpty-ctrl-c/run-*/**/sample.json
             build/test-artifacts/workflow-fixture/run-*/validation.json
             build/test-artifacts/workflow-fixture/run-*/stdout.json
             build/test-artifacts/workflow-fixture/run-*/cases/*/capture.bin
@@ -82,6 +96,7 @@ jobs:
             build/test-artifacts/workflow-sessions/run-*/fixtures/*/capture.bin.workflow.json
             build/test-artifacts/workflow-sessions/run-*/fixtures/*/capture.bin.receiver.json
             build/test-artifacts/workflow-sessions/run-*/fixtures/*/capture.bin.progress.jsonl
+            !build/test-artifacts/**/_private/**
       - name: Full ASCII state replay
         run: python -m experiments.core.run --out build/test-artifacts/replay-ascii
       - name: Full Unicode state replay
@@ -108,3 +123,4 @@ jobs:
             !build/test-artifacts/workflow-sessions/**/*.identity
             !build/test-artifacts/workflow-sessions/**/sample.json
             !build/test-artifacts/**/_resources-private/**
+            !build/test-artifacts/**/_private/**
diff --git a/.github/workflows/core-candidate.yml b/.github/workflows/core-candidate.yml
@@ -7,6 +7,7 @@ on:
       - 'experiments/core/**'
       - 'experiments/conpty/**'
       - 'experiments/shell/**'
+      - 'experiments/presentation/**'
       - 'experiments/differential/**'
       - 'experiments/measure/**'
       - 'experiments/candidates/alacritty/**'
@@ -17,6 +18,7 @@ on:
       - 'experiments/core/**'
       - 'experiments/conpty/**'
       - 'experiments/shell/**'
+      - 'experiments/presentation/**'
       - 'experiments/differential/**'
       - 'experiments/measure/**'
       - 'experiments/candidates/alacritty/**'
@@ -81,6 +83,9 @@ jobs:
       - name: Build and test candidate shell on Windows
         if: runner.os == 'Windows'
         run: cmake --build build --config Release --target shell_test_launcher && ctest --test-dir build -C Release -R candidate_shell_tui --output-on-failure
+      - name: Verify empty-title GUI and UTF-8 conversion on Windows
+        if: runner.os == 'Windows'
+        run: cmake --build build --config Release --target candidate_title_test renderer_metrics_test && ctest --test-dir build -C Release -R "^(candidate_title|renderer_metrics)$" --no-tests=error --output-on-failure
       - name: Build real application capture on Windows
         if: runner.os == 'Windows'
         run: cmake --build build --config Release --target real_app_capture
@@ -133,3 +138,4 @@ jobs:
             build/test-artifacts/candidate-fuzz/
             build/test-artifacts/measure-compare/
             build/test-artifacts/measure-interactive/
+            !build/test-artifacts/**/_private/**
diff --git a/CMakeLists.txt b/CMakeLists.txt
@@ -104,6 +104,9 @@ if(WIN32)
   target_link_libraries(core_measure PRIVATE Psapi)
   add_subdirectory(experiments/receive)
   add_subdirectory(experiments/conpty)
+  add_executable(conpty_ctrl_c_probe experiments/conpty/ctrl_c_probe.cpp)
+  termforge_warnings(conpty_ctrl_c_probe)
+  target_compile_definitions(conpty_ctrl_c_probe PRIVATE NOMINMAX WIN32_LEAN_AND_MEAN _WIN32_WINNT=0x0A00)
   add_executable(presentation_probe experiments/presentation/presentation.cpp)
   termforge_warnings(presentation_probe)
   target_compile_definitions(presentation_probe PRIVATE NOMINMAX WIN32_LEAN_AND_MEAN UNICODE _UNICODE)
@@ -205,6 +208,15 @@ if(BUILD_TESTING)
     target_link_libraries(runtime_observation_test PRIVATE termforge_core d2d1 dwrite gdi32 user32 imm32 ole32 oleaut32 uuid bcrypt)
     if(TERMFORGE_BUILD_CANDIDATE_ADAPTER)
       termforge_candidate_shell(runtime_observation_test)
+      add_executable(candidate_title_test experiments/shell/candidate_title_test.cpp experiments/shell/shell_launch.cpp)
+      termforge_warnings(candidate_title_test)
+      target_compile_definitions(candidate_title_test PRIVATE NOMINMAX WIN32_LEAN_AND_MEAN UNICODE _UNICODE)
+      target_link_libraries(candidate_title_test PRIVATE termforge_core d2d1 dwrite gdi32 user32 imm32 ole32 oleaut32 uuid bcrypt)
+      termforge_candidate_shell(candidate_title_test)
+      add_dependencies(candidate_title_test termforge_shell_assets)
+      add_test(NAME candidate_title COMMAND candidate_title_test)
+      set_tests_properties(candidate_title PROPERTIES TIMEOUT 35
+        ENVIRONMENT "TERMFORGE_TEST_ARTIFACTS=${PROJECT_BINARY_DIR}/test-artifacts")
     endif()
     add_dependencies(runtime_observation_test termforge_shell_assets)
     add_test(NAME runtime_observation COMMAND runtime_observation_test)
@@ -244,6 +256,9 @@ if(BUILD_TESTING)
   target_link_libraries(workspace_state_test PRIVATE termforge_core)
   termforge_warnings(workspace_state_test)
   add_test(NAME workspace_state COMMAND workspace_state_test)
+  add_executable(transport_completion_test experiments/shell/transport_completion_test.cpp)
+  termforge_warnings(transport_completion_test)
+  add_test(NAME transport_completion COMMAND transport_completion_test)
   if(TERMFORGE_BUILD_CANDIDATE_ADAPTER)
     add_test(NAME candidate_core COMMAND candidate_core_test)
   endif()
@@ -286,10 +301,12 @@ if(BUILD_TESTING)
   set_tests_properties(workflow_system_content PROPERTIES TIMEOUT 30)
   termforge_add_python_test(workflow_system_runner -m unittest research.ime.test_workflow_system_runner -v)
   set_tests_properties(workflow_system_runner PROPERTIES TIMEOUT 30)
+  termforge_add_python_test(copy_error_frame -m unittest experiments.shell.test_copy_error_frame -v)
   if(WIN32)
     termforge_add_python_test(research_guards -m unittest discover -s research/tests -v)
     termforge_add_python_test(receive -m unittest experiments.receive.test_receive -v)
     termforge_add_python_test(conpty -m unittest experiments.conpty.test_conpty -v)
+    termforge_add_python_test(conpty_ctrl_c -m unittest experiments.conpty.test_ctrl_c -v)
     termforge_add_python_test(presentation -m unittest experiments.presentation.test_presentation -v)
     termforge_add_python_test(shell -m unittest experiments.shell.test_shell -v)
     termforge_add_python_test(selection_bytes -m unittest experiments.shell.test_selection_bytes -v)