diff --git a/.github/actions/setup-gcp/action.yml b/.github/actions/setup-gcp/action.yml
index 39e89adc8f..85d2e9d9c5 100644
--- a/.github/actions/setup-gcp/action.yml
+++ b/.github/actions/setup-gcp/action.yml
@@ -8,6 +8,10 @@ inputs:
   gcp_project_id:
     description: 'GCP project ID — passed to google-github-actions/auth so the runner env has GOOGLE_CLOUD_PROJECT'
     required: false
+  fullsend-dir:
+    description: 'Path to fullsend config directory (empty for per-org workspace root layout)'
+    required: false
+    default: ''
 
 runs:
   using: composite
@@ -34,4 +38,6 @@ runs:
 
     - name: Prepare sandbox credentials
       shell: bash
-      run: bash scripts/prepare-sandbox-credentials.sh
+      env:
+        FULLSEND_DIR: ${{ inputs.fullsend-dir }}
+      run: bash "${FULLSEND_DIR:+$FULLSEND_DIR/}scripts/prepare-sandbox-credentials.sh"
diff --git a/.github/workflows/reusable-code.yml b/.github/workflows/reusable-code.yml
index 0e47e6401b..ba62b15345 100644
--- a/.github/workflows/reusable-code.yml
+++ b/.github/workflows/reusable-code.yml
@@ -153,7 +153,8 @@ jobs:
           REPO_FULL_NAME: ${{ inputs.source_repo }}
           GITHUB_ISSUE_URL: ${{ fromJSON(inputs.event_payload).issue.html_url }}
           COMMENT_BODY: ${{ fromJSON(inputs.event_payload).comment.body }}
-        run: bash scripts/pre-code.sh
+          FULLSEND_DIR: ${{ inputs.install_mode == 'per-repo' && '.fullsend' || '' }}
+        run: bash "${FULLSEND_DIR:+$FULLSEND_DIR/}scripts/pre-code.sh"
 
       - name: Setup GCP and prepare credentials
         if: steps.validate.outputs.skipped != 'true'
@@ -161,6 +162,7 @@ jobs:
         with:
           gcp_wif_provider: ${{ secrets.FULLSEND_GCP_WIF_PROVIDER }}
           gcp_project_id: ${{ secrets.FULLSEND_GCP_PROJECT_ID }}
+          fullsend-dir: ${{ inputs.install_mode == 'per-repo' && '.fullsend' || '' }}
 
       - name: Resolve bot identity
         if: steps.validate.outputs.skipped != 'true'
diff --git a/.github/workflows/reusable-fix.yml b/.github/workflows/reusable-fix.yml
index 1f1cdb9a47..3fddc99522 100644
--- a/.github/workflows/reusable-fix.yml
+++ b/.github/workflows/reusable-fix.yml
@@ -366,13 +366,15 @@ jobs:
           TRIGGER_SOURCE: ${{ inputs.trigger_source }}
           FIX_ITERATION: ${{ steps.context.outputs.iteration }}
           HUMAN_INSTRUCTION: ${{ steps.context.outputs.instruction }}
-        run: bash scripts/pre-fix.sh
+          FULLSEND_DIR: ${{ inputs.install_mode == 'per-repo' && '.fullsend' || '' }}
+        run: bash "${FULLSEND_DIR:+$FULLSEND_DIR/}scripts/pre-fix.sh"
 
       - name: Setup GCP and prepare credentials
         uses: ./.defaults/.github/actions/setup-gcp
         with:
           gcp_wif_provider: ${{ secrets.FULLSEND_GCP_WIF_PROVIDER }}
           gcp_project_id: ${{ secrets.FULLSEND_GCP_PROJECT_ID }}
+          fullsend-dir: ${{ inputs.install_mode == 'per-repo' && '.fullsend' || '' }}
 
       - name: Setup agent environment
         env:
diff --git a/.github/workflows/reusable-prioritize.yml b/.github/workflows/reusable-prioritize.yml
index d69c0b59e2..c8fc8e1bbe 100644
--- a/.github/workflows/reusable-prioritize.yml
+++ b/.github/workflows/reusable-prioritize.yml
@@ -135,6 +135,7 @@ jobs:
         with:
           gcp_wif_provider: ${{ secrets.FULLSEND_GCP_WIF_PROVIDER }}
           gcp_project_id: ${{ secrets.FULLSEND_GCP_PROJECT_ID }}
+          fullsend-dir: ${{ inputs.install_mode == 'per-repo' && '.fullsend' || '' }}
 
       - name: Setup agent environment
         env:
diff --git a/.github/workflows/reusable-retro.yml b/.github/workflows/reusable-retro.yml
index 6da12a7f33..f05d102cb2 100644
--- a/.github/workflows/reusable-retro.yml
+++ b/.github/workflows/reusable-retro.yml
@@ -148,6 +148,7 @@ jobs:
         with:
           gcp_wif_provider: ${{ secrets.FULLSEND_GCP_WIF_PROVIDER }}
           gcp_project_id: ${{ secrets.FULLSEND_GCP_PROJECT_ID }}
+          fullsend-dir: ${{ inputs.install_mode == 'per-repo' && '.fullsend' || '' }}
 
       - name: Setup agent environment
         env:
diff --git a/.github/workflows/reusable-review.yml b/.github/workflows/reusable-review.yml
index 0217ab7673..7a7ce8785a 100644
--- a/.github/workflows/reusable-review.yml
+++ b/.github/workflows/reusable-review.yml
@@ -153,13 +153,15 @@ jobs:
              || fromJSON(inputs.event_payload).issue.number }}
           ORG_NAME: ${{ github.repository_owner }}
           REVIEW_APP_CLIENT_ID: ${{ vars.FULLSEND_REVIEW_CLIENT_ID }}
-        run: bash scripts/pre-fetch-prior-review.sh
+          FULLSEND_DIR: ${{ inputs.install_mode == 'per-repo' && '.fullsend' || '' }}
+        run: bash "${FULLSEND_DIR:+$FULLSEND_DIR/}scripts/pre-fetch-prior-review.sh"
 
       - name: Setup GCP and prepare credentials
         uses: ./.defaults/.github/actions/setup-gcp
         with:
           gcp_wif_provider: ${{ secrets.FULLSEND_GCP_WIF_PROVIDER }}
           gcp_project_id: ${{ secrets.FULLSEND_GCP_PROJECT_ID }}
+          fullsend-dir: ${{ inputs.install_mode == 'per-repo' && '.fullsend' || '' }}
 
       - name: Setup agent environment
         env:
diff --git a/.github/workflows/reusable-triage.yml b/.github/workflows/reusable-triage.yml
index 0d3aba19dc..2a56f69de8 100644
--- a/.github/workflows/reusable-triage.yml
+++ b/.github/workflows/reusable-triage.yml
@@ -149,6 +149,7 @@ jobs:
         with:
           gcp_wif_provider: ${{ secrets.FULLSEND_GCP_WIF_PROVIDER }}
           gcp_project_id: ${{ secrets.FULLSEND_GCP_PROJECT_ID }}
+          fullsend-dir: ${{ inputs.install_mode == 'per-repo' && '.fullsend' || '' }}
 
       - name: Setup agent environment
         env: