fix: recover control socket after pathname loss

.github/workflows/ci.yml

@@ -15,7 +15,7 @@ concurrency:
 
 jobs:
   changes:
-    runs-on: ${{ vars.LINUX_RUNNER || 'blacksmith-4vcpu-ubuntu-2404' }}
+    runs-on: ${{ vars.LINUX_RUNNER || 'ubuntu-24.04' }}
     timeout-minutes: 5
     outputs:
       macos: ${{ steps.detect.outputs.macos }}
@@ -82,7 +82,7 @@ jobs:
             --head-sha "$HEAD_SHA"
 
   workflow-guard-tests:
-    runs-on: ${{ vars.LINUX_RUNNER || 'blacksmith-4vcpu-ubuntu-2404' }}
+    runs-on: ${{ vars.LINUX_RUNNER || 'ubuntu-24.04' }}
     steps:
       - name: Checkout
         uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # v6.0.2
@@ -299,7 +299,7 @@ jobs:
   remote-daemon-tests:
     needs: changes
     if: ${{ needs.changes.outputs.go == 'true' }}
-    runs-on: ${{ vars.LINUX_RUNNER || 'blacksmith-4vcpu-ubuntu-2404' }}
+    runs-on: ${{ vars.LINUX_RUNNER || 'ubuntu-24.04' }}
     steps:
       - name: Checkout
         uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # v6.0.2
@@ -320,7 +320,7 @@ jobs:
   web-typecheck:
     needs: changes
     if: ${{ needs.changes.outputs.web == 'true' }}
-    runs-on: ${{ vars.LINUX_RUNNER || 'blacksmith-4vcpu-ubuntu-2404' }}
+    runs-on: ${{ vars.LINUX_RUNNER || 'ubuntu-24.04' }}
     defaults:
       run:
         working-directory: web
@@ -356,7 +356,7 @@ jobs:
   react-apps-check:
     needs: changes
     if: ${{ needs.changes.outputs.web == 'true' }}
-    runs-on: ${{ vars.LINUX_RUNNER || 'blacksmith-4vcpu-ubuntu-2404' }}
+    runs-on: ${{ vars.LINUX_RUNNER || 'ubuntu-24.04' }}
     steps:
       - name: Checkout
         uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # v6.0.2
@@ -390,7 +390,7 @@ jobs:
     needs: changes
     # Generated protocol and streaming benchmarks also cover webview-only diffs.
     if: ${{ needs.changes.outputs.macos == 'true' || needs.changes.outputs.web == 'true' }}
-    runs-on: ${{ vars.LINUX_RUNNER || 'blacksmith-4vcpu-ubuntu-2404' }}
+    runs-on: ${{ vars.LINUX_RUNNER || 'ubuntu-24.04' }}
     timeout-minutes: 15
     steps:
       - name: Checkout
@@ -427,7 +427,7 @@ jobs:
   web-db-migrations:
     needs: changes
     if: ${{ needs.changes.outputs.web == 'true' }}
-    runs-on: ${{ vars.LINUX_RUNNER || 'blacksmith-4vcpu-ubuntu-2404' }}
+    runs-on: ${{ vars.LINUX_RUNNER || 'ubuntu-24.04' }}
     defaults:
       run:
         working-directory: web
@@ -1225,7 +1225,7 @@ jobs:
       - swift-package-tests
       - agent-session-web-resources
     if: ${{ always() }}
-    runs-on: ${{ vars.LINUX_RUNNER || 'blacksmith-4vcpu-ubuntu-2404' }}
+    runs-on: ${{ vars.LINUX_RUNNER || 'ubuntu-24.04' }}
     timeout-minutes: 5
     steps:
       - name: Check app-host unit test routing
@@ -1533,7 +1533,7 @@ jobs:
   agent-session-web-resources:
     needs: changes
     if: ${{ needs.changes.outputs.agent_session_web == 'true' }}
-    runs-on: ${{ vars.LINUX_RUNNER || 'blacksmith-4vcpu-ubuntu-2404' }}
+    runs-on: ${{ vars.LINUX_RUNNER || 'ubuntu-24.04' }}
     timeout-minutes: 10
     steps:
       - name: Checkout
@@ -1562,7 +1562,7 @@ jobs:
       - web-db-migrations
       - agent-session-web-resources
     if: ${{ always() }}
-    runs-on: ${{ vars.LINUX_RUNNER || 'blacksmith-4vcpu-ubuntu-2404' }}
+    runs-on: ${{ vars.LINUX_RUNNER || 'ubuntu-24.04' }}
     timeout-minutes: 5
     steps:
       - name: Check cheap CI layer before macOS runners
@@ -2153,7 +2153,7 @@ jobs:
       - tests-build-and-lag
       - release-build
     if: ${{ always() }}
-    runs-on: ${{ vars.LINUX_RUNNER || 'blacksmith-4vcpu-ubuntu-2404' }}
+    runs-on: ${{ vars.LINUX_RUNNER || 'ubuntu-24.04' }}
     steps:
       - name: Check routed CI jobs
         env:

.github/workflows/claude.yml

@@ -17,7 +17,7 @@ jobs:
       (github.event_name == 'pull_request_review_comment' && contains(github.event.comment.body, '@claude')) ||
       (github.event_name == 'pull_request_review' && contains(github.event.review.body, '@claude')) ||
       (github.event_name == 'issues' && (contains(github.event.issue.body, '@claude') || contains(github.event.issue.title, '@claude')))
-    runs-on: ${{ vars.LINUX_RUNNER || 'blacksmith-4vcpu-ubuntu-2404' }}
+    runs-on: ${{ vars.LINUX_RUNNER || 'ubuntu-24.04' }}
     permissions:
       contents: read
       pull-requests: read

.github/workflows/cloud-vm-migrate.yml

@@ -22,7 +22,7 @@ concurrency:
 
 jobs:
   preflight:
-    runs-on: ${{ vars.LINUX_RUNNER || 'blacksmith-4vcpu-ubuntu-2404' }}
+    runs-on: ${{ vars.LINUX_RUNNER || 'ubuntu-24.04' }}
     defaults:
       run:
         working-directory: web
@@ -46,7 +46,7 @@ jobs:
 
   migrate-staging:
     if: ${{ inputs.target == 'staging' || inputs.target == 'production' }}
-    runs-on: ${{ vars.LINUX_RUNNER || 'blacksmith-4vcpu-ubuntu-2404' }}
+    runs-on: ${{ vars.LINUX_RUNNER || 'ubuntu-24.04' }}
     needs: preflight
     environment: cloud-vm-staging
     defaults:
@@ -103,7 +103,7 @@ jobs:
 
   migrate-production:
     if: ${{ inputs.target == 'production' }}
-    runs-on: ${{ vars.LINUX_RUNNER || 'blacksmith-4vcpu-ubuntu-2404' }}
+    runs-on: ${{ vars.LINUX_RUNNER || 'ubuntu-24.04' }}
     needs: migrate-staging
     environment: cloud-vm-production
     defaults:

.github/workflows/cloud-vm-smoke.yml

@@ -39,7 +39,7 @@ concurrency:
 
 jobs:
   smoke:
-    runs-on: ${{ vars.LINUX_RUNNER || 'blacksmith-4vcpu-ubuntu-2404' }}
+    runs-on: ${{ vars.LINUX_RUNNER || 'ubuntu-24.04' }}
     environment: cloud-vm-${{ inputs.target }}
     defaults:
       run:

.github/workflows/cmux-tui-artifacts.yml

@@ -46,7 +46,7 @@ jobs:
     # main-push or manual dispatch.
     if: github.event_name != 'pull_request'
     needs: build
-    runs-on: ${{ vars.LINUX_RUNNER || 'blacksmith-4vcpu-ubuntu-2404' }}
+    runs-on: ${{ vars.LINUX_RUNNER || 'ubuntu-24.04' }}
     timeout-minutes: 15
     permissions:
       contents: read

.github/workflows/cmux-tui-build-package.yml

@@ -68,7 +68,7 @@ permissions: {}
 jobs:
   plan-build:
     name: select binary targets
-    runs-on: ${{ inputs.linux_runner != '' && inputs.linux_runner || vars.LINUX_RUNNER || 'blacksmith-4vcpu-ubuntu-2404' }}
+    runs-on: ${{ inputs.linux_runner != '' && inputs.linux_runner || vars.LINUX_RUNNER || 'ubuntu-24.04' }}
     timeout-minutes: 5
     outputs:
       matrix: ${{ steps.targets.outputs.matrix }}
@@ -81,7 +81,7 @@ jobs:
           PACKAGE_NPM: ${{ inputs.package_npm }}
           PACKAGE_PYPI: ${{ inputs.package_pypi }}
           MACOS_RUNNER: ${{ inputs.macos_runner != '' && inputs.macos_runner || vars.MACOS_RUNNER_15 || 'blacksmith-6vcpu-macos-15' }}
-          LINUX_RUNNER: ${{ inputs.linux_runner != '' && inputs.linux_runner || vars.LINUX_RUNNER || 'blacksmith-4vcpu-ubuntu-2404' }}
+          LINUX_RUNNER: ${{ inputs.linux_runner != '' && inputs.linux_runner || vars.LINUX_RUNNER || 'ubuntu-24.04' }}
           LINUX_ARM64_RUNNER: ${{ vars.LINUX_ARM64_RUNNER || 'ubuntu-24.04-arm' }}
           VERIFY_LINUX_ARM64: ${{ inputs.verify_linux_arm64 }}
         shell: bash
@@ -355,7 +355,7 @@ jobs:
   cloudflare-relay:
     name: Cloudflare Durable Object relay
     if: inputs.build_cloudflare_relay
-    runs-on: ${{ inputs.linux_runner != '' && inputs.linux_runner || vars.LINUX_RUNNER || 'blacksmith-4vcpu-ubuntu-2404' }}
+    runs-on: ${{ inputs.linux_runner != '' && inputs.linux_runner || vars.LINUX_RUNNER || 'ubuntu-24.04' }}
     timeout-minutes: 30
     env:
       RUSTUP_TOOLCHAIN: "1.91.0"
@@ -537,7 +537,7 @@ jobs:
     name: package distributions
     needs: build
     if: inputs.package_npm || inputs.package_pypi
-    runs-on: ${{ inputs.linux_runner != '' && inputs.linux_runner || vars.LINUX_RUNNER || 'blacksmith-4vcpu-ubuntu-2404' }}
+    runs-on: ${{ inputs.linux_runner != '' && inputs.linux_runner || vars.LINUX_RUNNER || 'ubuntu-24.04' }}
     timeout-minutes: 30
     permissions:
       contents: read

.github/workflows/cmux-tui-local-mac.yml

@@ -0,0 +1,152 @@
+name: cmux-tui local Mac
+run-name: cmux-tui local Mac ${{ github.actor }} @ ${{ github.sha }}
+
+on:
+  workflow_dispatch:
+    inputs:
+      commit:
+        description: "Exact 40-character commit SHA from a branch in teamleaderleo/cmux"
+        required: true
+        type: string
+      mode:
+        description: "Focused Rust test or broader local macOS pass"
+        required: true
+        type: choice
+        options:
+          - focused
+          - full
+      test_filter:
+        description: "Rust test-name substring for focused mode"
+        required: false
+        default: ""
+        type: string
+  issue_comment:
+    types: [created]
+
+permissions:
+  contents: read
+  issues: read
+  pull-requests: read
+
+concurrency:
+  group: cmux-tui-local-mac
+  cancel-in-progress: false
+
+jobs:
+  verify:
+    # This is a self-hosted runner on a public fork. Never schedule it for
+    # arbitrary commenters or arbitrary repositories.
+    if: >-
+      github.repository == 'teamleaderleo/cmux' &&
+      github.actor == 'teamleaderleo' &&
+      (
+        github.event_name == 'workflow_dispatch' ||
+        startsWith(github.event.comment.body, '/cmux-tui-local ')
+      )
+    runs-on: [self-hosted, macOS, cmux-local-mac]
+    timeout-minutes: 120
+
+    steps:
+      - name: Resolve and validate request
+        id: request
+        shell: bash
+        env:
+          EVENT_NAME: ${{ github.event_name }}
+          COMMENT_BODY: ${{ github.event.comment.body }}
+          INPUT_COMMIT: ${{ inputs.commit }}
+          INPUT_MODE: ${{ inputs.mode }}
+          INPUT_FILTER: ${{ inputs.test_filter }}
+        run: |
+          set -euo pipefail
+
+          if [[ "$EVENT_NAME" == "workflow_dispatch" ]]; then
+            commit="$INPUT_COMMIT"
+            mode="$INPUT_MODE"
+            test_filter="$INPUT_FILTER"
+          else
+            read -r command commit mode test_filter extra <<< "$COMMENT_BODY"
+            if [[ "$command" != "/cmux-tui-local" ]]; then
+              echo "error: unsupported comment command" >&2
+              exit 2
+            fi
+            if [[ -n "${extra:-}" ]]; then
+              echo "error: too many command arguments" >&2
+              exit 2
+            fi
+          fi
+
+          if [[ ! "$commit" =~ ^[0-9a-f]{40}$ ]]; then
+            echo "error: commit must be an exact lowercase 40-character SHA" >&2
+            exit 2
+          fi
+
+          case "$mode" in
+            focused)
+              if [[ ! "$test_filter" =~ ^[A-Za-z0-9_][A-Za-z0-9_:.-]{0,199}$ ]]; then
+                echo "error: focused mode needs one safe Rust test-name substring" >&2
+                exit 2
+              fi
+              ;;
+            full)
+              if [[ -n "${test_filter:-}" ]]; then
+                echo "error: full mode does not accept a test filter" >&2
+                exit 2
+              fi
+              ;;
+            *)
+              echo "error: mode must be focused or full" >&2
+              exit 2
+              ;;
+          esac
+
+          echo "commit=$commit" >> "$GITHUB_OUTPUT"
+          echo "mode=$mode" >> "$GITHUB_OUTPUT"
+          echo "test_filter=${test_filter:-}" >> "$GITHUB_OUTPUT"
+
+      - name: Check out trusted control scripts
+        uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # v6.0.2
+        with:
+          repository: teamleaderleo/cmux
+          ref: main
+          path: control
+          persist-credentials: false
+          fetch-depth: 1
+          submodules: false
+
+      - name: Check out requested fork commit
+        uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # v6.0.2
+        with:
+          repository: teamleaderleo/cmux
+          ref: ${{ steps.request.outputs.commit }}
+          path: work
+          persist-credentials: false
+          fetch-depth: 0
+          submodules: false
+
+      - name: Require commit to belong to a branch in this fork
+        working-directory: work
+        shell: bash
+        env:
+          TARGET_COMMIT: ${{ steps.request.outputs.commit }}
+        run: |
+          set -euo pipefail
+          test "$(git rev-parse HEAD)" = "$TARGET_COMMIT"
+          git fetch --no-tags origin '+refs/heads/*:refs/remotes/origin/*'
+          if ! git branch -r --contains "$TARGET_COMMIT" | grep -Eq '^[* ]+origin/'; then
+            echo "error: requested commit is not contained in a branch of teamleaderleo/cmux" >&2
+            exit 1
+          fi
+
+      - name: Run on the local Mac
+        shell: bash
+        env:
+          CMUX_TUI_REPO_ROOT: ${{ github.workspace }}/work
+          MODE: ${{ steps.request.outputs.mode }}
+          TEST_FILTER: ${{ steps.request.outputs.test_filter }}
+        run: |
+          set -euo pipefail
+          if [[ "$MODE" == "focused" ]]; then
+            "$GITHUB_WORKSPACE/control/scripts/verify-cmux-tui-local.sh" --filter "$TEST_FILTER"
+          else
+            "$GITHUB_WORKSPACE/control/scripts/verify-cmux-tui-local.sh" --full
+          fi

.github/workflows/cmux-tui-nightly.yml

@@ -14,7 +14,7 @@ concurrency:
 jobs:
   version:
     name: derive nightly versions
-    runs-on: ${{ vars.LINUX_RUNNER || 'blacksmith-4vcpu-ubuntu-2404' }}
+    runs-on: ${{ vars.LINUX_RUNNER || 'ubuntu-24.04' }}
     permissions:
       contents: read
     outputs:
@@ -149,7 +149,7 @@ jobs:
     needs:
       - version
       - build-package
-    runs-on: ${{ vars.LINUX_RUNNER || 'blacksmith-4vcpu-ubuntu-2404' }}
+    runs-on: ${{ vars.LINUX_RUNNER || 'ubuntu-24.04' }}
     permissions:
       contents: read
       id-token: write

.github/workflows/cmux-tui-release-cut.yml

@@ -26,7 +26,7 @@ concurrency:
 jobs:
   tag:
     name: create release tag
-    runs-on: ${{ vars.LINUX_RUNNER || 'blacksmith-4vcpu-ubuntu-2404' }}
+    runs-on: ${{ vars.LINUX_RUNNER || 'ubuntu-24.04' }}
     permissions:
       contents: write
       # actions: write lets this job dispatch the downstream build/publish

.github/workflows/cmux-tui-release.yml

@@ -38,7 +38,7 @@ concurrency:
 jobs:
   version:
     name: derive package version
-    runs-on: ${{ vars.LINUX_RUNNER || 'blacksmith-4vcpu-ubuntu-2404' }}
+    runs-on: ${{ vars.LINUX_RUNNER || 'ubuntu-24.04' }}
     permissions:
       contents: read
     outputs:
@@ -87,7 +87,7 @@ jobs:
     name: dispatch verified artifacts to registries
     if: ${{ inputs.publish_npm || inputs.publish_pypi }}
     needs: build-package
-    runs-on: ${{ vars.LINUX_RUNNER || 'blacksmith-4vcpu-ubuntu-2404' }}
+    runs-on: ${{ vars.LINUX_RUNNER || 'ubuntu-24.04' }}
     permissions:
       actions: write
       contents: read