README.md

@@ -1,8 +1,8 @@
 # action/check-naming
 
-Composite Gitea Action that validates a pull request's head branch name
+Composite Gitea Action that validates a pull request's branch, title, Bug
-and title against the fritzlab naming standard. `@v2` fails (exits 1) on
+tracking, and AI authorship against the fritzlab Git standard. The current
-any violation; `@v1` is the legacy warn-only release that never fails
+action fails (exits 1) on any violation; `@v1` is the legacy warn-only release
 (Bugs program: see
 [fritzlab/agenthub#557](https://code.fritzlab.net/fritzlab/agenthub/issues/557)).
 
@@ -28,11 +28,17 @@ jobs:
     runs-on: fritzlab
     timeout-minutes: 5
     steps:
-      - uses: https://code.fritzlab.net/action/check-naming@v2
+      - uses: actions/checkout@v4
+        with:
+          fetch-depth: 0
+      - uses: https://code.fritzlab.net/action/check-naming@<commit-sha>
         with:
           head-branch: ${{ github.head_ref }}
           pr-title: ${{ github.event.pull_request.title }}
           pr-author: ${{ github.event.pull_request.user.login }}
+          pr-body: ${{ github.event.pull_request.body }}
+          base-sha: ${{ github.event.pull_request.base.sha }}
+          head-sha: ${{ github.event.pull_request.head.sha }}
 ```
 
 To wire a new repo warn-only first, add `continue-on-error: true` to the
@@ -45,10 +51,13 @@ job — the step still fails, but the job cannot block the PR.
 | `head-branch` | yes | Head branch name — `github.head_ref` |
 | `pr-title` | yes | PR title — `github.event.pull_request.title` |
 | `pr-author` | no | PR author login — `github.event.pull_request.user.login`; `dfritz` is exempt |
+| `pr-body` | yes | PR description — `github.event.pull_request.body` |
+| `base-sha` | yes | Base commit — `github.event.pull_request.base.sha` |
+| `head-sha` | yes | Head commit — `github.event.pull_request.head.sha` |
 
 ## Behavior
 
-The check validates two things:
+The check validates four things for a Bug-backed Agent PR:
 
 1. **Branch form** — must be `<role>/bug-<id>/<kebab>` or `chore/<kebab>`.
    Unknown roles, missing `bug-` segment, uppercase bug-ids, and empty
@@ -58,6 +67,15 @@ The check validates two things:
    `[bug-<id>] `. For a `chore` branch the title must have no `[bug-id]`
    prefix. If both carry a bug-id they must match.
 
+3. **Tracking and attribution** — `## Tracking` contains both the literal
+   `Fixes bug-<id>` automation token and the matching navigable
+   `https://agenthub.fritzlab.net/bug-<id>` URL. A separate `## Attribution`
+   section contains the canonical `Authored-By` product/model watermark.
+
+4. **Commit attribution** — every commit in `base-sha..head-sha` ends with
+   the canonical `Authored-By` trailer, separated from the message body by a
+   blank line. The naming job must check out full history before this action.
+
 Every violation prints a `FAIL[check-naming]: ...` line and the step
 exits 1. To make the check required on a repo: drop any
 `continue-on-error: true` from the consuming workflow and add the job's
@@ -65,7 +83,8 @@ context to the repo's `status_check_contexts` in agenthub `hub/hub.yaml`.
 
 ## Versions
 
-- `v2` — enforcing: exits 1 on violation (current).
+- unreleased — adds Bug tracking plus PR and commit attribution enforcement.
+- `v2` — enforces branch and title naming.
 - `v1` — legacy warn-only: logs `WARN` lines, always exits 0.
 
 ## Tests

action.yaml

@@ -1,8 +1,8 @@
-name: Check branch/PR naming
+name: Check PR contract
 description: |
-  Validates that a PR's head branch and title follow the fritzlab naming
+  Validates that a PR's branch, title, Bug tracking, and AI attribution
-  standard. Fails (exits 1) on any violation, with FAIL log lines naming
+  follow the fritzlab Git standard. Fails (exits 1) on any violation, with
-  it. Warn-only wiring is the consumer's choice: set
+  FAIL log lines naming it. Warn-only wiring is the consumer's choice: set
   continue-on-error: true on the job (or pin @v1, which never fails).
 
   Standard:
@@ -26,6 +26,15 @@ inputs:
       dfritz is exempt from all checks.
     required: false
     default: ''
+  pr-body:
+    description: PR description — github.event.pull_request.body.
+    required: true
+  base-sha:
+    description: Base commit SHA — github.event.pull_request.base.sha.
+    required: true
+  head-sha:
+    description: Head commit SHA — github.event.pull_request.head.sha.
+    required: true
 
 runs:
   using: composite
@@ -36,4 +45,7 @@ runs:
         HEAD_BRANCH: ${{ inputs.head-branch }}
         PR_TITLE: ${{ inputs.pr-title }}
         PR_AUTHOR: ${{ inputs.pr-author }}
+        PR_BODY: ${{ inputs.pr-body }}
+        BASE_SHA: ${{ inputs.base-sha }}
+        HEAD_SHA: ${{ inputs.head-sha }}
       run: bash "${{ github.action_path }}/check.sh"

check.sh

@@ -1,5 +1,5 @@
 #!/usr/bin/env bash
-# Branch and PR title naming-standard checker.
+# Branch, PR body, and commit contract checker.
 # v2: exits 1 on violation. Consumers that want warn-only set
 # continue-on-error: true on the job (or stay on @v1).
 set -euo pipefail
@@ -7,6 +7,9 @@ set -euo pipefail
 BRANCH="${HEAD_BRANCH:-}"
 TITLE="${PR_TITLE:-}"
 AUTHOR="${PR_AUTHOR:-}"
+BODY="${PR_BODY:-}"
+BASE="${BASE_SHA:-}"
+HEAD="${HEAD_SHA:-}"
 
 # Break-glass: dfritz is exempt from all naming checks.
 if [ "${AUTHOR}" = "dfritz" ]; then
@@ -49,6 +52,72 @@ if [ "${BRANCH_KIND}" = "role-bug" ]; then
     echo "FAIL[check-naming]: bug-id mismatch — branch carries '${BRANCH_BUG}' but title carries '${TITLE_BUG}'"
     FAILED=1
   fi
+
+  tracking=$(printf '%s\n' "${BODY}" | awk '
+    /^## Tracking[[:space:]]*$/ { in_section=1; next }
+    /^## / && in_section { exit }
+    in_section { print }
+  ')
+  if [ -z "${tracking}" ]; then
+    echo "FAIL[check-naming]: PR body must contain a non-empty ## Tracking section"
+    FAILED=1
+  else
+    if ! printf '%s\n' "${tracking}" | grep -qE "(^|[[:space:]])Fixes[[:space:]]+${BRANCH_BUG}([^a-z0-9]|$)"; then
+      echo "FAIL[check-naming]: ## Tracking must contain the literal token 'Fixes ${BRANCH_BUG}'"
+      FAILED=1
+    fi
+    if ! printf '%s\n' "${tracking}" | grep -Fq "https://agenthub.fritzlab.net/${BRANCH_BUG}"; then
+      echo "FAIL[check-naming]: ## Tracking must link https://agenthub.fritzlab.net/${BRANCH_BUG}"
+      FAILED=1
+    fi
+  fi
+
+  attribution=$(printf '%s\n' "${BODY}" | awk '
+    /^## Attribution[[:space:]]*$/ { in_section=1; next }
+    /^## / && in_section { exit }
+    in_section { print }
+  ')
+  watermark_re='^[-*]?[[:space:]]*Authored-By: .+ \(.+\) <noreply@[[:alnum:].-]+>$'
+  if ! printf '%s\n' "${attribution}" | grep -qE "${watermark_re}"; then
+    echo "FAIL[check-naming]: ## Attribution must contain an Authored-By product/model watermark"
+    FAILED=1
+  fi
+
+  if ! printf '%s\n%s\n' "${BASE}" "${HEAD}" | grep -qEv '^[0-9a-f]{40,64}$'; then
+    for revision in "${BASE}" "${HEAD}"; do
+      if ! git cat-file -e "${revision}^{commit}" 2>/dev/null; then
+        echo "FAIL[check-naming]: base-sha and head-sha must name available commits"
+        FAILED=1
+        break
+      fi
+    done
+    if git cat-file -e "${BASE}^{commit}" 2>/dev/null && git cat-file -e "${HEAD}^{commit}" 2>/dev/null; then
+      commit_count=0
+      while IFS= read -r commit; do
+        [ -n "${commit}" ] || continue
+        commit_count=$((commit_count + 1))
+        message=$(git log -1 --format=%B "${commit}")
+        if ! printf '%s\n' "${message}" | awk '
+          { line[NR]=$0 }
+          END {
+            n=NR
+            while (n > 0 && line[n] == "") n--
+            if (n < 3 || line[n-1] != "" || line[n] !~ /^Authored-By: .+ \(.+\) <noreply@[[:alnum:].-]+>$/) exit 1
+          }
+        '; then
+          echo "FAIL[check-naming]: commit ${commit} must end with an Authored-By product/model trailer"
+          FAILED=1
+        fi
+      done < <(git rev-list --reverse "${BASE}..${HEAD}" 2>/dev/null)
+      if [ "${commit_count}" -eq 0 ]; then
+        echo "FAIL[check-naming]: base-sha..head-sha contains no PR commits"
+        FAILED=1
+      fi
+    fi
+  else
+    echo "FAIL[check-naming]: base-sha and head-sha must be lowercase hexadecimal commit SHAs"
+    FAILED=1
+  fi
 elif [ "${BRANCH_KIND}" = "chore" ] && [ -n "${TITLE_BUG}" ]; then
   echo "FAIL[check-naming]: chore branch should not carry a [bug-id] title prefix"
   FAILED=1

tests/run

@@ -5,11 +5,30 @@ set -euo pipefail
 SCRIPT="$(cd "$(dirname "$0")/.." && pwd)/check.sh"
 PASS=0
 FAIL=0
+FIXTURES=$(mktemp -d)
+trap 'rm -rf "${FIXTURES}"' EXIT
+
+git -C "${FIXTURES}" init -q
+git -C "${FIXTURES}" config user.name "Test Agent"
+git -C "${FIXTURES}" config user.email "test@noreply.fritzlab.net"
+git -C "${FIXTURES}" commit --allow-empty -q -m "base"
+BASE=$(git -C "${FIXTURES}" rev-parse HEAD)
+git -C "${FIXTURES}" commit --allow-empty -q -m "valid change" -m "Authored-By: Codex (GPT-5) <noreply@openai.com>"
+GOOD_HEAD=$(git -C "${FIXTURES}" rev-parse HEAD)
+
+canonical_body() {
+  local bug="$1"
+  printf '## Tracking\n- Fixes %s — [%s](https://agenthub.fritzlab.net/%s)\n\n## Attribution\n- Authored-By: Codex (GPT-5) <noreply@openai.com>\n' "$bug" "$bug" "$bug"
+}
 
 check() {
   local desc="$1" want_fail="$2" branch="$3" title="$4" author="$5"
+  local bug body
+  bug=$(printf '%s\n' "$branch" | sed -nE 's|^[^/]+/(bug-[a-z0-9]+)/.*|\1|p')
+  body=$(canonical_body "${bug:-bug-test}")
   local out rc=0
-  out=$(HEAD_BRANCH="$branch" PR_TITLE="$title" PR_AUTHOR="$author" bash "$SCRIPT" 2>&1) || rc=$?
+  out=$(cd "${FIXTURES}" && HEAD_BRANCH="$branch" PR_TITLE="$title" PR_AUTHOR="$author" \
+    PR_BODY="$body" BASE_SHA="$BASE" HEAD_SHA="$GOOD_HEAD" bash "$SCRIPT" 2>&1) || rc=$?
   local got_lines=0
   echo "$out" | grep -qE "^FAIL" && got_lines=1 || true
   if [ "$rc" -eq "$want_fail" ] && [ "$got_lines" -eq "$want_fail" ]; then
@@ -22,6 +41,22 @@ check() {
   fi
 }
 
+check_contract() {
+  local desc="$1" body="$2" base="$3" head="$4" diagnostic="$5"
+  local out rc=0
+  out=$(cd "${FIXTURES}" && HEAD_BRANCH="architect/bug-x7k2m9/contract" \
+    PR_TITLE="[bug-x7k2m9] Enforce contract" PR_AUTHOR="architect" \
+    PR_BODY="$body" BASE_SHA="$base" HEAD_SHA="$head" bash "$SCRIPT" 2>&1) || rc=$?
+  if [ "$rc" -eq 1 ] && printf '%s\n' "$out" | grep -Fq "$diagnostic"; then
+    echo "PASS [$desc]"
+    PASS=$((PASS + 1))
+  else
+    echo "FAIL [$desc]: expected exit=1 and diagnostic '$diagnostic', got exit=$rc"
+    echo "  output: $out"
+    FAIL=$((FAIL + 1))
+  fi
+}
+
 # break-glass
 check "dfritz exempt — invalid branch"  0 "totally/wrong-branch" "no prefix"               "dfritz"
 check "dfritz exempt — mismatch"        0 "dev/bug-abc/thing"    "[bug-xyz] Thing"          "dfritz"
@@ -56,6 +91,34 @@ check "invalid — uppercase bug-id"      1 "dev/bug-ABC123/thing"           "[b
 check "invalid — empty kebab"           1 "dev/bug-x7k2m9/"                "[bug-x7k2m9] No kebab"       "dev"
 check "invalid — no bug prefix on seg"  1 "dev/x7k2m9/fix-resize"          "Fix resize"                  "dev"
 
+# Bug-backed PR body contract. These mirror the omissions in agenthub#779.
+BODY=$(canonical_body "bug-x7k2m9")
+check_contract "raw Fixes only rejects missing link and attribution" \
+  $'## Tracking\n- Fixes bug-x7k2m9' "$BASE" "$GOOD_HEAD" "must link https://agenthub.fritzlab.net/bug-x7k2m9"
+check_contract "tracking rejects linked Fixes without literal token" \
+  $'## Tracking\n- Fixes [bug-x7k2m9](https://agenthub.fritzlab.net/bug-x7k2m9)\n\n## Attribution\n- Authored-By: Codex (GPT-5) <noreply@openai.com>' \
+  "$BASE" "$GOOD_HEAD" "must contain the literal token 'Fixes bug-x7k2m9'"
+check_contract "tracking rejects wrong Bug URL" \
+  $'## Tracking\n- Fixes bug-x7k2m9 — https://agenthub.fritzlab.net/bug-other\n\n## Attribution\n- Authored-By: Codex (GPT-5) <noreply@openai.com>' \
+  "$BASE" "$GOOD_HEAD" "must link https://agenthub.fritzlab.net/bug-x7k2m9"
+check_contract "attribution must be in its own section" \
+  $'## Tracking\n- Fixes bug-x7k2m9 — https://agenthub.fritzlab.net/bug-x7k2m9\n- Authored-By: Codex (GPT-5) <noreply@openai.com>' \
+  "$BASE" "$GOOD_HEAD" "## Attribution must contain"
+
+git -C "${FIXTURES}" commit --allow-empty -q -m "unwatermarked change"
+BAD_HEAD=$(git -C "${FIXTURES}" rev-parse HEAD)
+check_contract "agenthub 779 commits reject missing watermark" "$BODY" "$GOOD_HEAD" "$BAD_HEAD" "must end with an Authored-By"
+
+git -C "${FIXTURES}" commit --allow-empty -q -m $'misplaced trailer\nAuthored-By: Codex (GPT-5) <noreply@openai.com>'
+MISPLACED_HEAD=$(git -C "${FIXTURES}" rev-parse HEAD)
+check_contract "commit watermark requires blank separator" "$BODY" "$BAD_HEAD" "$MISPLACED_HEAD" "must end with an Authored-By"
+
+git -C "${FIXTURES}" commit --allow-empty -q -m "trailer not final" -m $'Authored-By: Codex (GPT-5) <noreply@openai.com>\nextra text'
+NONFINAL_HEAD=$(git -C "${FIXTURES}" rev-parse HEAD)
+check_contract "commit watermark must be final trailer" "$BODY" "$MISPLACED_HEAD" "$NONFINAL_HEAD" "must end with an Authored-By"
+check_contract "missing commit range rejects" "$BODY" "$GOOD_HEAD" "$GOOD_HEAD" "contains no PR commits"
+check_contract "invalid SHA rejects before git" "$BODY" "not-a-sha" "$GOOD_HEAD" "lowercase hexadecimal"
+
 echo ""
 echo "Results: ${PASS} passed, ${FAIL} failed"
 [ "${FAIL}" -eq 0 ]