diff --git a/.github/workflows/ci.yaml b/.github/workflows/ci.yaml
index c54dd7a6..e9d7ddfe 100644
--- a/.github/workflows/ci.yaml
+++ b/.github/workflows/ci.yaml
@@ -16,7 +16,7 @@ concurrency:
 jobs:
   lint:
     name: lint
-    runs-on: ubuntu-latest
+    runs-on: blacksmith-2vcpu-ubuntu-2404
     steps:
       - name: 🏗 Setup repo
         uses: actions/checkout@v4
@@ -38,7 +38,7 @@ jobs:
   build:
     name: build
     environment: Preview
-    runs-on: ubuntu-latest
+    runs-on: blacksmith-2vcpu-ubuntu-2404
     steps:
       - name: 🏗 Setup repo
         uses: actions/checkout@v4
@@ -71,7 +71,7 @@ jobs:
 
   prettier:
     name: prettier
-    runs-on: ubuntu-latest
+    runs-on: blacksmith-2vcpu-ubuntu-2404
     steps:
       - name: 🏗 Setup repo
         uses: actions/checkout@v4
@@ -116,7 +116,7 @@ jobs:
 
   test:
     name: test
-    runs-on: ubuntu-latest
+    runs-on: blacksmith-2vcpu-ubuntu-2404
     steps:
       - name: 🏗 Setup repo
         uses: actions/checkout@v4
@@ -135,7 +135,7 @@ jobs:
 
   drift:
     name: drift
-    runs-on: ubuntu-latest
+    runs-on: blacksmith-2vcpu-ubuntu-2404
     steps:
       - name: 🏗 Setup repo
         uses: actions/checkout@v4
@@ -158,7 +158,7 @@ jobs:
 
   fallow:
     name: fallow
-    runs-on: ubuntu-latest
+    runs-on: blacksmith-2vcpu-ubuntu-2404
     steps:
       - name: 🏗 Setup repo
         uses: actions/checkout@v4
@@ -183,7 +183,7 @@ jobs:
     name: e2e
     if: github.event_name == 'merge_group'
     environment: Preview
-    runs-on: ubuntu-latest
+    runs-on: blacksmith-2vcpu-ubuntu-2404
     timeout-minutes: 20
     container: mcr.microsoft.com/playwright:v1.58.0-noble
     env:
@@ -231,7 +231,7 @@ jobs:
 
   migrations-check:
     name: migrations-check
-    runs-on: ubuntu-latest
+    runs-on: blacksmith-2vcpu-ubuntu-2404
     steps:
       - name: 🏗 Setup repo
         uses: actions/checkout@v4
@@ -266,7 +266,7 @@ jobs:
 
   migration-safety:
     name: migration-safety
-    runs-on: ubuntu-latest
+    runs-on: blacksmith-2vcpu-ubuntu-2404
     permissions:
       pull-requests: write
     steps:
diff --git a/.github/workflows/claude.yml b/.github/workflows/claude.yml
index 8052eb33..437a381b 100644
--- a/.github/workflows/claude.yml
+++ b/.github/workflows/claude.yml
@@ -11,7 +11,7 @@ jobs:
     if: |
       (github.event_name == 'issue_comment' && contains(github.event.comment.body, '@claude')) ||
       (github.event_name == 'issues' && (contains(github.event.issue.body, '@claude') || contains(github.event.issue.title, '@claude')))
-    runs-on: ubuntu-latest
+    runs-on: blacksmith-2vcpu-ubuntu-2404
     permissions:
       contents: write
       pull-requests: write
diff --git a/.github/workflows/cleanup.yaml b/.github/workflows/cleanup.yaml
index 0f88735b..c0bac013 100644
--- a/.github/workflows/cleanup.yaml
+++ b/.github/workflows/cleanup.yaml
@@ -4,7 +4,7 @@ on:
 jobs:
   cleanup:
     if: ${{ github.event_name == 'workflow_dispatch' || (!contains(fromJson('["main", "release"]'), github.event.ref) && !startsWith(github.event.ref, 'gh-readonly-queue/') && !startsWith(github.event.ref, 'dependabot/')) }}
-    runs-on: ubuntu-latest
+    runs-on: blacksmith-2vcpu-ubuntu-2404
     steps:
       - name: Install Turso CLI
         run: curl -sSfL https://get.tur.so/install.sh | bash
diff --git a/.github/workflows/dependabot-auto-format.yml b/.github/workflows/dependabot-auto-format.yml
index 65b02eae..4f1a0f31 100644
--- a/.github/workflows/dependabot-auto-format.yml
+++ b/.github/workflows/dependabot-auto-format.yml
@@ -14,7 +14,7 @@ concurrency:
 jobs:
   prettify:
     if: github.actor == 'dependabot[bot]'
-    runs-on: ubuntu-latest
+    runs-on: blacksmith-2vcpu-ubuntu-2404
     steps:
       - name: Checkout repository
         uses: actions/checkout@v4
diff --git a/.github/workflows/development.yaml b/.github/workflows/development.yaml
index 9a13f042..7d1c043e 100644
--- a/.github/workflows/development.yaml
+++ b/.github/workflows/development.yaml
@@ -8,7 +8,7 @@ on:
       - 'main'
 jobs:
   deploy:
-    runs-on: ubuntu-latest
+    runs-on: blacksmith-2vcpu-ubuntu-2404
     environment: Dev
     env:
       NODE_ENV: production
diff --git a/.github/workflows/post-release.yml b/.github/workflows/post-release.yml
index bf147437..716f2eb4 100644
--- a/.github/workflows/post-release.yml
+++ b/.github/workflows/post-release.yml
@@ -9,7 +9,7 @@ jobs:
     permissions:
       issues: write
       pull-requests: write
-    runs-on: ubuntu-latest
+    runs-on: blacksmith-2vcpu-ubuntu-2404
     steps:
       - uses: apexskier/github-release-commenter@v1
         with:
diff --git a/.github/workflows/preview.yaml b/.github/workflows/preview.yaml
index f0476c2f..65d1e0bd 100644
--- a/.github/workflows/preview.yaml
+++ b/.github/workflows/preview.yaml
@@ -13,6 +13,10 @@ concurrency:
 jobs:
   deploy:
     if: ${{ github.event_name != 'merge_group' }}
+    # Kept on GitHub-hosted runners: the seed step writes thousands of rows to a
+    # remote Turso DB, and that long, latency-bound stream of round-trips
+    # reproducibly kills Blacksmith runners mid-seed. Revisit once seeding no
+    # longer does per-row remote writes — see NWACus/web#1143.
     runs-on: ubuntu-latest
     environment: Preview
     env:
diff --git a/.github/workflows/production.yaml b/.github/workflows/production.yaml
index 4027879c..a202fcf6 100644
--- a/.github/workflows/production.yaml
+++ b/.github/workflows/production.yaml
@@ -15,7 +15,7 @@ on:
         required: true
 jobs:
   deploy:
-    runs-on: ubuntu-latest
+    runs-on: blacksmith-2vcpu-ubuntu-2404
     environment: Production
     env:
       NODE_ENV: production
diff --git a/.github/workflows/sync-prod-to-dev.yml b/.github/workflows/sync-prod-to-dev.yml
index 0b1b934a..c0a3a850 100644
--- a/.github/workflows/sync-prod-to-dev.yml
+++ b/.github/workflows/sync-prod-to-dev.yml
@@ -10,7 +10,7 @@ on:
   workflow_dispatch:
 jobs:
   sync:
-    runs-on: ubuntu-latest
+    runs-on: blacksmith-2vcpu-ubuntu-2404
     environment: Dev
     env:
       NODE_ENV: production