From 655012713c553bbf3e04a6a3c28031071be15a17 Mon Sep 17 00:00:00 2001
From: Andrew Duffy <andrew@a10y.dev>
Date: Mon, 23 Feb 2026 11:29:01 -0500
Subject: [PATCH 1/2] add CI check for file names

Signed-off-by: Andrew Duffy <andrew@a10y.dev>
---
 .github/workflows/validate-proposals.yml | 39 ++++++++++++++++++++++++
 1 file changed, 39 insertions(+)
 create mode 100644 .github/workflows/validate-proposals.yml

diff --git a/.github/workflows/validate-proposals.yml b/.github/workflows/validate-proposals.yml
new file mode 100644
index 0000000..351e973
--- /dev/null
+++ b/.github/workflows/validate-proposals.yml
@@ -0,0 +1,39 @@
+name: Validate Proposals
+
+on:
+  pull_request:
+    branches:
+      - develop
+
+jobs:
+  validate-naming:
+    name: Validate proposal naming convention
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v4
+
+      - name: Validate proposal file names
+        run: |
+          exit_code=0
+
+          # Find all files in proposals/ directory (if it exists)
+          if [ -d "proposals" ]; then
+            for file in proposals/*; do
+              # Skip if no files match (glob returns literal pattern)
+              [ -e "$file" ] || continue
+
+              filename=$(basename "$file")
+
+              # Check if file matches the expected pattern: NNNN-*.md
+              if ! echo "$filename" | grep -qE '^[0-9]{4}-[a-zA-Z0-9_-]+\.md$'; then
+                echo "ERROR: Invalid filename: $filename"
+                echo "  Expected format: NNNN-name.md (e.g., 0007-my-proposal.md)"
+                exit_code=1
+              else
+                echo "OK: $filename"
+              fi
+            done
+          fi
+
+          exit $exit_code

From 6925614f048117aa701f2edb1c0f0c8591ca1b34 Mon Sep 17 00:00:00 2001
From: Andrew Duffy <andrew@a10y.dev>
Date: Mon, 23 Feb 2026 11:40:29 -0500
Subject: [PATCH 2/2] extract out to script

Signed-off-by: Andrew Duffy <andrew@a10y.dev>
---
 .github/workflows/validate-proposals.yml | 24 +-----------
 scripts/validate-proposals.sh            | 50 ++++++++++++++++++++++++
 2 files changed, 51 insertions(+), 23 deletions(-)
 create mode 100755 scripts/validate-proposals.sh

diff --git a/.github/workflows/validate-proposals.yml b/.github/workflows/validate-proposals.yml
index 351e973..32b186a 100644
--- a/.github/workflows/validate-proposals.yml
+++ b/.github/workflows/validate-proposals.yml
@@ -14,26 +14,4 @@ jobs:
         uses: actions/checkout@v4
 
       - name: Validate proposal file names
-        run: |
-          exit_code=0
-
-          # Find all files in proposals/ directory (if it exists)
-          if [ -d "proposals" ]; then
-            for file in proposals/*; do
-              # Skip if no files match (glob returns literal pattern)
-              [ -e "$file" ] || continue
-
-              filename=$(basename "$file")
-
-              # Check if file matches the expected pattern: NNNN-*.md
-              if ! echo "$filename" | grep -qE '^[0-9]{4}-[a-zA-Z0-9_-]+\.md$'; then
-                echo "ERROR: Invalid filename: $filename"
-                echo "  Expected format: NNNN-name.md (e.g., 0007-my-proposal.md)"
-                exit_code=1
-              else
-                echo "OK: $filename"
-              fi
-            done
-          fi
-
-          exit $exit_code
+        run: ./scripts/validate-proposals.sh
diff --git a/scripts/validate-proposals.sh b/scripts/validate-proposals.sh
new file mode 100755
index 0000000..4325d9f
--- /dev/null
+++ b/scripts/validate-proposals.sh
@@ -0,0 +1,50 @@
+#!/usr/bin/env bash
+set -euo pipefail
+
+validate_file() {
+  local filename="$1"
+
+  # Check if file matches the expected pattern: NNNN-*.md
+  if ! echo "$filename" | grep -qE '^[0-9]{4}-[a-zA-Z0-9_-]+\.md$'; then
+    echo "ERROR: Invalid filename: $filename"
+    echo "  Expected format: NNNN-name.md (e.g., 0007-my-proposal.md)"
+    return 1
+  fi
+
+  return 0
+}
+
+exit_code=0
+valid_ids=""
+
+# Find all files in proposals/ directory (if it exists)
+if [ -d "proposals" ]; then
+  for file in $(ls proposals/ | sort); do
+    file="proposals/$file"
+    # Skip if no files match (glob returns literal pattern)
+    [ -e "$file" ] || continue
+
+    filename=$(basename "$file")
+
+    if validate_file "$filename"; then
+      echo "OK: $filename"
+      # Collect ID and filename for duplicate checking
+      id="${filename:0:4}"
+      valid_ids="${valid_ids}${id} ${filename}"$'\n'
+    else
+      exit_code=1
+    fi
+  done
+
+  # Check for duplicate IDs
+  duplicate_ids=$(echo "$valid_ids" | awk '{print $1}' | sort | uniq -d)
+  if [ -n "$duplicate_ids" ]; then
+    for dup_id in $duplicate_ids; do
+      files=$(echo "$valid_ids" | grep "^$dup_id " | awk '{print $2}' | tr '\n' ' ')
+      echo "ERROR: Duplicate ID $dup_id found in: $files"
+    done
+    exit_code=1
+  fi
+fi
+
+exit $exit_code