diff --git a/.github/workflows/avenger.lock.yml b/.github/workflows/avenger.lock.yml
index 526ade1f0c7..3e69c16833b 100644
--- a/.github/workflows/avenger.lock.yml
+++ b/.github/workflows/avenger.lock.yml
@@ -1,4 +1,4 @@
-# gh-aw-metadata: {"schema_version":"v4","frontmatter_hash":"d4466640c25d62b249377a1ad92ae11667fe9c8a1c357715252b102d8bdf08f9","body_hash":"e5fd04fe008ba327d939d9aee395ffb802836e30fd1f3772ca36984bdd1478f4","strict":true,"agent_id":"claude","agent_model":"claude-haiku-4.5","engine_versions":{"claude":"2.1.220"}}
+# gh-aw-metadata: {"schema_version":"v4","frontmatter_hash":"937a0ac85443d06ab62d40119a43b667dd01cb1f05721f75db6af105240660ae","body_hash":"e5fd04fe008ba327d939d9aee395ffb802836e30fd1f3772ca36984bdd1478f4","strict":true,"agent_id":"claude","agent_model":"claude-haiku-4.5","engine_versions":{"claude":"2.1.220"}}
 # gh-aw-manifest: {"version":1,"secrets":["ANTHROPIC_API_KEY","COPILOT_GITHUB_TOKEN","GH_AW_CI_TRIGGER_TOKEN","GH_AW_GITHUB_MCP_SERVER_TOKEN","GH_AW_GITHUB_TOKEN","GH_AW_OTEL_GRAFANA_AUTHORIZATION","GH_AW_OTEL_GRAFANA_ENDPOINT","GH_AW_OTEL_SENTRY_AUTHORIZATION","GH_AW_OTEL_SENTRY_ENDPOINT","GITHUB_TOKEN"],"actions":[{"repo":"actions/cache/restore","sha":"55cc8345863c7cc4c66a329aec7e433d2d1c52a9","version":"v6.1.0"},{"repo":"actions/cache/save","sha":"55cc8345863c7cc4c66a329aec7e433d2d1c52a9","version":"v6.1.0"},{"repo":"actions/checkout","sha":"3d3c42e5aac5ba805825da76410c181273ba90b1","version":"v7.0.1"},{"repo":"actions/download-artifact","sha":"3e5f45b2cfb9172054b4087a40e8e0b5a5461e7c","version":"v8.0.1"},{"repo":"actions/github-script","sha":"3a2844b7e9c422d3c10d287c895573f7108da1b3","version":"v9.0.0"},{"repo":"actions/setup-go","sha":"b7ad1dad31e06c5925ef5d2fc7ad053ef454303e","version":"v7.0.0"},{"repo":"actions/setup-node","sha":"820762786026740c76f36085b0efc47a31fe5020","version":"v7.0.0"},{"repo":"actions/upload-artifact","sha":"043fb46d1a93c77aae656e7c1c64a875d1fc6a0a","version":"v7.0.1"}],"containers":[{"image":"ghcr.io/github/gh-aw-firewall/agent:0.27.43","digest":"sha256:04e2d1987a565000a8f114b89d806ae7a3864dd4f944be65275b28c93d8690e6","pinned_image":"ghcr.io/github/gh-aw-firewall/agent:0.27.43@sha256:04e2d1987a565000a8f114b89d806ae7a3864dd4f944be65275b28c93d8690e6"},{"image":"ghcr.io/github/gh-aw-firewall/api-proxy:0.27.43","digest":"sha256:d85f57975af5ea23af4996e41ed73fbc8f5b4a47402472bfe82e508f352cb0c1","pinned_image":"ghcr.io/github/gh-aw-firewall/api-proxy:0.27.43@sha256:d85f57975af5ea23af4996e41ed73fbc8f5b4a47402472bfe82e508f352cb0c1"},{"image":"ghcr.io/github/gh-aw-firewall/cli-proxy:0.27.43","digest":"sha256:65c45ea2967984d0024f3df61bc71335658a77ede96c8d9665da7a5f33a795ab","pinned_image":"ghcr.io/github/gh-aw-firewall/cli-proxy:0.27.43@sha256:65c45ea2967984d0024f3df61bc71335658a77ede96c8d9665da7a5f33a795ab"},{"image":"ghcr.io/github/gh-aw-firewall/squid:0.27.43","digest":"sha256:26be5e0b8c8f4c41c8a59126b29bb5d80b07253597472ded2a16bdd75abcbf9d","pinned_image":"ghcr.io/github/gh-aw-firewall/squid:0.27.43@sha256:26be5e0b8c8f4c41c8a59126b29bb5d80b07253597472ded2a16bdd75abcbf9d"},{"image":"ghcr.io/github/gh-aw-mcpg:v0.4.7","digest":"sha256:7545220a9aca134b71e51193ee0eaf4c50756ebf8fbd25a63ae7556e62815c00","pinned_image":"ghcr.io/github/gh-aw-mcpg:v0.4.7@sha256:7545220a9aca134b71e51193ee0eaf4c50756ebf8fbd25a63ae7556e62815c00"},{"image":"ghcr.io/github/gh-aw-node","digest":"sha256:a8082161d7dceda14b68f32eb39d0eaa96b825d07f5895b096afab9d9e0c7748","pinned_image":"ghcr.io/github/gh-aw-node@sha256:a8082161d7dceda14b68f32eb39d0eaa96b825d07f5895b096afab9d9e0c7748"},{"image":"ghcr.io/github/github-mcp-server:v1.8.0","digest":"sha256:d5a18c04b92714c309eb46a2305087e91a4dbd80420f6e462656699f95093520","pinned_image":"ghcr.io/github/github-mcp-server:v1.8.0@sha256:d5a18c04b92714c309eb46a2305087e91a4dbd80420f6e462656699f95093520"}]}
 # This file was automatically generated by gh-aw. DO NOT EDIT. To debug this workflow, load the skill at https://github.com/github/gh-aw/blob/main/debug.md
 #
@@ -29,6 +29,9 @@
 #   Imports:
 #     - shared/otlp.md
 #
+# Frontmatter env variables:
+#   - GOTOOLCHAIN: (main workflow)
+#
 # Secrets used:
 #   - ANTHROPIC_API_KEY
 #   - COPILOT_GITHUB_TOKEN
@@ -81,6 +84,7 @@ concurrency:
 run-name: "Avenger"
 
 env:
+  GOTOOLCHAIN: auto
   OTEL_EXPORTER_OTLP_ENDPOINT: ${{ secrets.GH_AW_OTEL_SENTRY_ENDPOINT }}
   OTEL_SERVICE_NAME: gh-aw.avenger
   OTEL_RESOURCE_ATTRIBUTES: 'gh-aw.workflow.name=Avenger,gh-aw.repository=${{ github.repository }},gh-aw.run.id=${{ github.run_id }},github.run_id=${{ github.run_id }},gh-aw.engine.id=claude'
diff --git a/.github/workflows/avenger.md b/.github/workflows/avenger.md
index 24772f30811..15e4b3dc8a1 100644
--- a/.github/workflows/avenger.md
+++ b/.github/workflows/avenger.md
@@ -13,6 +13,8 @@ permissions:
   actions: read
   issues: read
   pull-requests: read
+env:
+  GOTOOLCHAIN: auto
 tracker-id: avenger-ci
 max-turns: 50
 model: claude-haiku-4.5
diff --git a/.github/workflows/hourly-ci-cleaner.lock.yml b/.github/workflows/hourly-ci-cleaner.lock.yml
index be6f7ef33ba..ecb80714d56 100644
--- a/.github/workflows/hourly-ci-cleaner.lock.yml
+++ b/.github/workflows/hourly-ci-cleaner.lock.yml
@@ -1,4 +1,4 @@
-# gh-aw-metadata: {"schema_version":"v4","frontmatter_hash":"275bd24e1d9a03d13c85b1e03fbf8772dde6fd5744660041e669bd8a38a96811","body_hash":"8eb6f8fd1e8e3d63cfd268226d09333129d49634435ae9a3c88debb099521ed5","strict":true,"agent_id":"claude","engine_versions":{"claude":"2.1.220"}}
+# gh-aw-metadata: {"schema_version":"v4","frontmatter_hash":"f1dd4787abd188aa686247fd81db7d5d5e4303a06448de8cceaa31fe1120382f","body_hash":"8eb6f8fd1e8e3d63cfd268226d09333129d49634435ae9a3c88debb099521ed5","strict":true,"agent_id":"claude","engine_versions":{"claude":"2.1.220"}}
 # gh-aw-manifest: {"version":1,"secrets":["ANTHROPIC_API_KEY","COPILOT_GITHUB_TOKEN","GH_AW_CI_TRIGGER_TOKEN","GH_AW_GITHUB_MCP_SERVER_TOKEN","GH_AW_GITHUB_TOKEN","GH_AW_OTEL_GRAFANA_AUTHORIZATION","GH_AW_OTEL_GRAFANA_ENDPOINT","GH_AW_OTEL_SENTRY_AUTHORIZATION","GH_AW_OTEL_SENTRY_ENDPOINT","GITHUB_TOKEN"],"actions":[{"repo":"actions/cache/restore","sha":"55cc8345863c7cc4c66a329aec7e433d2d1c52a9","version":"v6.1.0"},{"repo":"actions/cache/save","sha":"55cc8345863c7cc4c66a329aec7e433d2d1c52a9","version":"v6.1.0"},{"repo":"actions/checkout","sha":"3d3c42e5aac5ba805825da76410c181273ba90b1","version":"v7.0.1"},{"repo":"actions/download-artifact","sha":"3e5f45b2cfb9172054b4087a40e8e0b5a5461e7c","version":"v8.0.1"},{"repo":"actions/github-script","sha":"3a2844b7e9c422d3c10d287c895573f7108da1b3","version":"v9.0.0"},{"repo":"actions/setup-go","sha":"b7ad1dad31e06c5925ef5d2fc7ad053ef454303e","version":"v7.0.0"},{"repo":"actions/setup-node","sha":"820762786026740c76f36085b0efc47a31fe5020","version":"v7.0.0"},{"repo":"actions/upload-artifact","sha":"043fb46d1a93c77aae656e7c1c64a875d1fc6a0a","version":"v7.0.1"}],"containers":[{"image":"ghcr.io/github/gh-aw-firewall/agent:0.27.43","digest":"sha256:04e2d1987a565000a8f114b89d806ae7a3864dd4f944be65275b28c93d8690e6","pinned_image":"ghcr.io/github/gh-aw-firewall/agent:0.27.43@sha256:04e2d1987a565000a8f114b89d806ae7a3864dd4f944be65275b28c93d8690e6"},{"image":"ghcr.io/github/gh-aw-firewall/api-proxy:0.27.43","digest":"sha256:d85f57975af5ea23af4996e41ed73fbc8f5b4a47402472bfe82e508f352cb0c1","pinned_image":"ghcr.io/github/gh-aw-firewall/api-proxy:0.27.43@sha256:d85f57975af5ea23af4996e41ed73fbc8f5b4a47402472bfe82e508f352cb0c1"},{"image":"ghcr.io/github/gh-aw-firewall/cli-proxy:0.27.43","digest":"sha256:65c45ea2967984d0024f3df61bc71335658a77ede96c8d9665da7a5f33a795ab","pinned_image":"ghcr.io/github/gh-aw-firewall/cli-proxy:0.27.43@sha256:65c45ea2967984d0024f3df61bc71335658a77ede96c8d9665da7a5f33a795ab"},{"image":"ghcr.io/github/gh-aw-firewall/squid:0.27.43","digest":"sha256:26be5e0b8c8f4c41c8a59126b29bb5d80b07253597472ded2a16bdd75abcbf9d","pinned_image":"ghcr.io/github/gh-aw-firewall/squid:0.27.43@sha256:26be5e0b8c8f4c41c8a59126b29bb5d80b07253597472ded2a16bdd75abcbf9d"},{"image":"ghcr.io/github/gh-aw-mcpg:v0.4.7","digest":"sha256:7545220a9aca134b71e51193ee0eaf4c50756ebf8fbd25a63ae7556e62815c00","pinned_image":"ghcr.io/github/gh-aw-mcpg:v0.4.7@sha256:7545220a9aca134b71e51193ee0eaf4c50756ebf8fbd25a63ae7556e62815c00"},{"image":"ghcr.io/github/gh-aw-node","digest":"sha256:a8082161d7dceda14b68f32eb39d0eaa96b825d07f5895b096afab9d9e0c7748","pinned_image":"ghcr.io/github/gh-aw-node@sha256:a8082161d7dceda14b68f32eb39d0eaa96b825d07f5895b096afab9d9e0c7748"},{"image":"ghcr.io/github/github-mcp-server:v1.8.0","digest":"sha256:d5a18c04b92714c309eb46a2305087e91a4dbd80420f6e462656699f95093520","pinned_image":"ghcr.io/github/github-mcp-server:v1.8.0@sha256:d5a18c04b92714c309eb46a2305087e91a4dbd80420f6e462656699f95093520"}]}
 # This file was automatically generated by gh-aw. DO NOT EDIT. To debug this workflow, load the skill at https://github.com/github/gh-aw/blob/main/debug.md
 #
@@ -30,6 +30,9 @@
 #     - ../agents/ci-cleaner.agent.md
 #     - shared/otlp.md
 #
+# Frontmatter env variables:
+#   - GOTOOLCHAIN: (main workflow)
+#
 # Secrets used:
 #   - ANTHROPIC_API_KEY
 #   - COPILOT_GITHUB_TOKEN
@@ -80,6 +83,7 @@ concurrency:
 run-name: "CI Cleaner"
 
 env:
+  GOTOOLCHAIN: auto
   OTEL_EXPORTER_OTLP_ENDPOINT: ${{ secrets.GH_AW_OTEL_SENTRY_ENDPOINT }}
   OTEL_SERVICE_NAME: gh-aw.hourly-ci-cleaner
   OTEL_RESOURCE_ATTRIBUTES: 'gh-aw.workflow.name=CI%20Cleaner,gh-aw.repository=${{ github.repository }},gh-aw.run.id=${{ github.run_id }},github.run_id=${{ github.run_id }},gh-aw.engine.id=claude'
diff --git a/.github/workflows/hourly-ci-cleaner.md b/.github/workflows/hourly-ci-cleaner.md
index 7fecab5f629..d29e5f28cf2 100644
--- a/.github/workflows/hourly-ci-cleaner.md
+++ b/.github/workflows/hourly-ci-cleaner.md
@@ -9,6 +9,8 @@ permissions:
   actions: read
   issues: read
   pull-requests: read
+env:
+  GOTOOLCHAIN: auto
 tracker-id: hourly-ci-cleaner
 # Token Budget Guardrails:
 # - Prompt optimization: Added efficiency guidelines and early termination