From 42ffb518f129f4e6e46797598d0ac1b206575380 Mon Sep 17 00:00:00 2001
From: tac0turtle <marko@baricevic.me>
Date: Mon, 26 Jan 2026 14:42:51 +0100
Subject: [PATCH 1/3] chore: add workflow to cleanup old PR preview folders

Runs weekly on Sunday at midnight UTC (and on manual trigger).
Deletes pr-* folders older than 7 days based on git history.

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>
---
 .github/workflows/cleanup-old-previews.yml | 73 ++++++++++++++++++++++
 1 file changed, 73 insertions(+)
 create mode 100644 .github/workflows/cleanup-old-previews.yml

diff --git a/.github/workflows/cleanup-old-previews.yml b/.github/workflows/cleanup-old-previews.yml
new file mode 100644
index 000000000..f250c4635
--- /dev/null
+++ b/.github/workflows/cleanup-old-previews.yml
@@ -0,0 +1,73 @@
+name: Cleanup Old PR Previews
+
+on:
+  schedule:
+    # Run weekly on Sunday at midnight UTC
+    - cron: '0 0 * * 0'
+  workflow_dispatch: # Allow manual trigger
+
+permissions:
+  contents: write
+
+jobs:
+  cleanup:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout repository
+        uses: actions/checkout@v4
+        with:
+          fetch-depth: 0 # Need full history to determine folder age
+
+      - name: Find and delete old preview folders
+        run: |
+          set -euo pipefail
+
+          DAYS_OLD=7
+          CUTOFF_DATE=$(date -d "$DAYS_OLD days ago" +%s)
+          DELETED_FOLDERS=""
+
+          echo "Cutoff date: $(date -d "@$CUTOFF_DATE" --iso-8601=seconds)"
+          echo "Looking for pr-* folders older than $DAYS_OLD days..."
+          echo ""
+
+          for dir in pr-*/; do
+            [ -d "$dir" ] || continue
+            dir="${dir%/}"
+
+            # Get the date of the first commit that added this folder
+            FIRST_COMMIT_DATE=$(git log --diff-filter=A --format=%ct --reverse -- "$dir" | head -1)
+
+            if [ -z "$FIRST_COMMIT_DATE" ]; then
+              echo "Warning: Could not find creation date for $dir, skipping"
+              continue
+            fi
+
+            FOLDER_AGE_DAYS=$(( ($(date +%s) - FIRST_COMMIT_DATE) / 86400 ))
+
+            if [ "$FIRST_COMMIT_DATE" -lt "$CUTOFF_DATE" ]; then
+              echo "Deleting $dir (created $(date -d "@$FIRST_COMMIT_DATE" --iso-8601=seconds), $FOLDER_AGE_DAYS days old)"
+              rm -rf "$dir"
+              DELETED_FOLDERS="$DELETED_FOLDERS $dir"
+            else
+              echo "Keeping $dir (created $(date -d "@$FIRST_COMMIT_DATE" --iso-8601=seconds), $FOLDER_AGE_DAYS days old)"
+            fi
+          done
+
+          echo ""
+          echo "DELETED_FOLDERS=$DELETED_FOLDERS" >> "$GITHUB_ENV"
+
+      - name: Commit and push changes
+        run: |
+          if [ -z "$DELETED_FOLDERS" ]; then
+            echo "No folders to delete"
+            exit 0
+          fi
+
+          git config user.name "github-actions[bot]"
+          git config user.email "github-actions[bot]@users.noreply.github.com"
+
+          git add -A
+          git commit -m "chore: cleanup old PR preview folders
+
+          Deleted folders:$DELETED_FOLDERS"
+          git push

From 4541b3e3b8e44cf971683540027631e314b6705c Mon Sep 17 00:00:00 2001
From: tac0turtle <marko@baricevic.me>
Date: Mon, 26 Jan 2026 14:45:49 +0100
Subject: [PATCH 2/3] fix: handle SIGPIPE in cleanup workflow

Disable pipefail in subshell when piping git log to head
to avoid exit code 141 when head closes the pipe early.

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>
---
 .github/workflows/cleanup-old-previews.yml | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/.github/workflows/cleanup-old-previews.yml b/.github/workflows/cleanup-old-previews.yml
index f250c4635..6359909f8 100644
--- a/.github/workflows/cleanup-old-previews.yml
+++ b/.github/workflows/cleanup-old-previews.yml
@@ -35,7 +35,8 @@ jobs:
             dir="${dir%/}"
 
             # Get the date of the first commit that added this folder
-            FIRST_COMMIT_DATE=$(git log --diff-filter=A --format=%ct --reverse -- "$dir" | head -1)
+            # Disable pipefail in subshell to avoid SIGPIPE (exit 141) when head closes early
+            FIRST_COMMIT_DATE=$(set +o pipefail; git log --diff-filter=A --format=%ct --reverse -- "$dir" | head -1)
 
             if [ -z "$FIRST_COMMIT_DATE" ]; then
               echo "Warning: Could not find creation date for $dir, skipping"

From f0f58a5784b91486dbcce75ede070a78ac8a0eb3 Mon Sep 17 00:00:00 2001
From: tac0turtle <marko@baricevic.me>
Date: Mon, 26 Jan 2026 14:46:57 +0100
Subject: [PATCH 3/3] feat: add pull_request trigger for testing

Runs as dry-run on PRs (no commit/push), shows what would be deleted.

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>
---
 .github/workflows/cleanup-old-previews.yml | 11 +++++++++++
 1 file changed, 11 insertions(+)

diff --git a/.github/workflows/cleanup-old-previews.yml b/.github/workflows/cleanup-old-previews.yml
index 6359909f8..24a8ac111 100644
--- a/.github/workflows/cleanup-old-previews.yml
+++ b/.github/workflows/cleanup-old-previews.yml
@@ -5,6 +5,7 @@ on:
     # Run weekly on Sunday at midnight UTC
     - cron: '0 0 * * 0'
   workflow_dispatch: # Allow manual trigger
+  pull_request: # For testing
 
 permissions:
   contents: write
@@ -57,7 +58,17 @@ jobs:
           echo ""
           echo "DELETED_FOLDERS=$DELETED_FOLDERS" >> "$GITHUB_ENV"
 
+      - name: Summary (dry-run on PR)
+        if: github.event_name == 'pull_request'
+        run: |
+          if [ -z "$DELETED_FOLDERS" ]; then
+            echo "Dry-run: No folders would be deleted"
+          else
+            echo "Dry-run: Would delete:$DELETED_FOLDERS"
+          fi
+
       - name: Commit and push changes
+        if: github.event_name != 'pull_request'
         run: |
           if [ -z "$DELETED_FOLDERS" ]; then
             echo "No folders to delete"