diff --git a/.github/workflows/ci.yaml b/.github/workflows/ci.yaml
index ad388449..5f8b1972 100644
--- a/.github/workflows/ci.yaml
+++ b/.github/workflows/ci.yaml
@@ -138,6 +138,9 @@ jobs:
       - name: 🧪 Self-test marketplace workflow authorization branches
         run: bash scripts/marketplace-publication-workflow.test.sh
 
+      - name: 🧪 Self-test marketplace publication checkout identity
+        run: bash scripts/marketplace-publication-identity.test.sh
+
       - name: 🧪 Self-test create-only marketplace proposals
         run: bash scripts/propose-marketplace-release.test.sh
 
diff --git a/.github/workflows/publish-marketplace-release.yaml b/.github/workflows/publish-marketplace-release.yaml
index 8c5f1663..9fc9e446 100644
--- a/.github/workflows/publish-marketplace-release.yaml
+++ b/.github/workflows/publish-marketplace-release.yaml
@@ -53,9 +53,9 @@ jobs:
         env:
           GH_TOKEN: ${{ github.token }}
           REPOSITORY: ${{ github.repository }}
-          RELEASE_COMMIT: ${{ github.sha }}
           CI_RUN: ${{ inputs.ci-run || 'latest' }}
         run: |
+          RELEASE_COMMIT=$(git rev-parse --verify HEAD)
           bash scripts/prepare-merged-marketplace-release.sh \
             --repo "$REPOSITORY" --release "$RELEASE_COMMIT" --ci-run "$CI_RUN" \
             --output "$RUNNER_TEMP/marketplace-candidate" > "$RUNNER_TEMP/assessment.json"
diff --git a/docs/marketplace-releases.md b/docs/marketplace-releases.md
index 85b8b950..e3c1d1a9 100644
--- a/docs/marketplace-releases.md
+++ b/docs/marketplace-releases.md
@@ -106,7 +106,9 @@ this preparation workflow has no publishing job.
 
 **Publish marketplace release** supports manual main dispatch and an opt-in hourly check at minute
 25 UTC. It uses
-current-main tooling and regenerates the candidate from the version proposal's sole parent. Both
+current-main tooling and regenerates the candidate from the version proposal's sole parent. The
+assessment commit and its output bind to the actual current-main checkout, including when main
+advances after dispatch. Both
 remote main and the named CI run are checked before and after verification. A stale, foreign,
 failed, PR or unrelated workflow run is refused. An ordinary commit reports `NO_VERSION_CHANGE`
 and cannot publish. No downloaded artifact supplies publication authority.
@@ -219,6 +221,8 @@ reuses the complete candidate reproduction, source parent, two-manifest tree and
 in a disposable local repository. Only that private repository's copy of the candidate tag is
 removed for reconstruction. The caller's tags, branches, index and working files are preserved;
 neither GitHub nor another remote is contacted. Inherited Git layout overrides are neutralized.
+Physical checkout pathnames retain all their bytes, including trailing newlines. Verification keeps
+configured filesystem observation hooks inert and preserves the caller's index and configuration.
 
 Success emits `status: INSPECTED`, `scope: local-historical-content`, and a `localTag` snapshot.
 `PRESENT` records the tag object, resolved commit and whether it targets the nominated release;
@@ -302,6 +306,8 @@ or an open PR touching either marketplace manifest. A complete unrelated PR is n
 latest selector refuses a pending or failed latest CI run rather than finding an older green one.
 For renamed PR files, complete REST filename/status records must match GraphQL before the original
 paths are considered. Moving a manifest away is a conflict; complete unrelated renames are allowed.
+The CI workflow identity accepts its plain path or the exact main-qualified forms
+`.github/workflows/ci.yaml@main` and `.github/workflows/ci.yaml@refs/heads/main`.
 Two agreeing observations and byte-exact private reconstruction are required. `NO_CHANGE` performs
 no writes, including when proposal creation was requested. Evidence artifacts supply no write authority.
 Read-only candidate-release visibility is the reader's projection; it does not establish visibility of
diff --git a/scripts/inspect-marketplace-release.sh b/scripts/inspect-marketplace-release.sh
index 99097118..e5122ee5 100755
--- a/scripts/inspect-marketplace-release.sh
+++ b/scripts/inspect-marketplace-release.sh
@@ -16,8 +16,10 @@ unset GIT_DIR GIT_WORK_TREE GIT_COMMON_DIR GIT_INDEX_FILE GIT_OBJECT_DIRECTORY \
   GIT_ALTERNATE_OBJECT_DIRECTORIES GIT_PREFIX GIT_NAMESPACE GIT_CONFIG_PARAMETERS GIT_CONFIG_COUNT
 unset GIT_CONFIG GIT_CONFIG_GLOBAL GIT_CONFIG_SYSTEM GIT_CONFIG_NOSYSTEM
 export GIT_NO_REPLACE_OBJECTS=1 GIT_NO_LAZY_FETCH=1
-original=$(git rev-parse --show-toplevel) || fail 'a Git working tree is required'
-original=$(cd "$original" && pwd -P)
+original=$(git rev-parse --show-toplevel && printf '.') || fail 'a Git working tree is required'
+original=${original%$'\n.'}
+original=$(cd "$original" && pwd -P && printf '.') || fail 'physical working tree is unavailable'
+original=${original%$'\n.'}
 temp=$(mktemp -d "${TMPDIR:-/tmp}/marketplace-inspect.XXXXXX")
 trap 'rm -rf "$temp"' EXIT
 # Check the original before cloning; a local clone need not retain these restrictions.
@@ -48,9 +50,10 @@ if [ -n "$tag_oid" ]; then
 else
   printf '%s\n' '{"state":"ABSENT","objectOid":null,"commitOid":null,"targetsRelease":null}' > "$temp/local-tag.json"
 fi
-# A separate local repository shares immutable objects, never the caller's refs or index.
+# A separate local repository copies immutable objects, never the caller's refs or index.
 # No checkout, network call or nominated source code is executed.
-git clone --shared --no-checkout --quiet "$original" "$temp/repository"
+# Shared-clone alternates use line records and cannot retain every physical pathname.
+git clone --no-hardlinks --no-checkout --quiet "$original" "$temp/repository"
 private=$(cd "$temp/repository" && pwd -P)
 [ "$(git -C "$private" rev-parse --show-toplevel)" = "$private" ] || fail 'private worktree layout is invalid'
 [ "$(git -C "$private" rev-parse --path-format=absolute --git-common-dir)" = "$private/.git" ] || fail 'private Git directory is invalid'
diff --git a/scripts/inspect-marketplace-release.test.sh b/scripts/inspect-marketplace-release.test.sh
index fc318631..0a2c258a 100755
--- a/scripts/inspect-marketplace-release.test.sh
+++ b/scripts/inspect-marketplace-release.test.sh
@@ -77,6 +77,16 @@ run > "$work/default"
 jq -e '.status=="VERIFIED" and .scope=="local-prepublication"' "$work/default" >/dev/null
 passed=$((passed+1))
 accept 'absent tag is an inspection, never prepublication clearance' ABSENT null
+fixture
+newline_repo="$repo"$'\n'
+mv "$repo" "$newline_repo"; repo=$newline_repo
+snapshot "$work/newline-before"
+accept 'exact trailing-newline checkout identity' ABSENT null
+snapshot "$work/newline-after"
+for field in refs status index; do
+  cmp "$work/newline-before.$field" "$work/newline-after.$field" || fail "newline checkout $field changed"
+done
+passed=$((passed+1))
 git -C "$repo" tag v1.3.0 "$release"
 if run > "$work/default" 2> "$work/error"; then fail 'default mode accepted occupied tag'; fi
 [ ! -s "$work/default" ] || fail 'default emitted clearance'
diff --git a/scripts/marketplace-observation-completeness.test.sh b/scripts/marketplace-observation-completeness.test.sh
index 3ac5b600..cc763ece 100644
--- a/scripts/marketplace-observation-completeness.test.sh
+++ b/scripts/marketplace-observation-completeness.test.sh
@@ -76,7 +76,9 @@ if { [ "${1:-}" = -C ] && [ "${2:-}" = "$OBS_REPO" ] && [ "${3:-}" = config ]; }
   esac
 fi
 if [ "$OBS_FAULT" = graft ] && [ "${1:-}" = rev-parse ] && [ "${2:-}" = --git-path ]; then exit 1; fi
-if [ "$OBS_FAULT" = changes ] && [ "${1:-}" = diff-tree ]; then
+if [ "$OBS_FAULT" = changes ] &&
+   { [ "${1:-}" = diff-tree ] ||
+     { [ "${1:-}" = -c ] && [ "${2:-}" = core.fsmonitor=false ] && [ "${3:-}" = diff-tree ]; }; }; then
   printf '.claude-plugin/marketplace.json\0.github/plugin/marketplace.json\0content'
   exit 0
 fi
diff --git a/scripts/marketplace-publication-identity.test.sh b/scripts/marketplace-publication-identity.test.sh
new file mode 100644
index 00000000..d4ad98e8
--- /dev/null
+++ b/scripts/marketplace-publication-identity.test.sh
@@ -0,0 +1,74 @@
+#!/usr/bin/env bash
+# Run the publication workflow's actual assessment shell against an advanced checkout.
+set -euo pipefail
+root=$(cd "$(dirname "${BASH_SOURCE[0]}")/.." && pwd)
+work=$(mktemp -d)
+trap 'rm -rf "$work"' EXIT
+awk '
+  /^  assess:/ {assessment=1}
+  /^  publish:/ {assessment=0}
+  assessment && /^        id: prepare$/ {selected=1}
+  selected && /^        run: \|$/ {reading=1; next}
+  reading && /^          / {sub(/^          /,""); print; next}
+  reading {exit}
+' "$root/.github/workflows/publish-marketplace-release.yaml" > "$work/step"
+[[ -s $work/step ]] || { echo 'FAIL: assessment step is unavailable' >&2; exit 1; }
+git init -q "$work/repo"
+git -C "$work/repo" config user.name 'Publication identity fixture'
+git -C "$work/repo" config user.email fixture@example.invalid
+git -C "$work/repo" config commit.gpgsign false
+git -C "$work/repo" commit --allow-empty -qm baseline
+dispatch=$(git -C "$work/repo" rev-parse HEAD)
+git -C "$work/repo" commit --allow-empty -qm current
+current=$(git -C "$work/repo" rev-parse HEAD)
+mkdir "$work/repo/scripts" "$work/bin"
+cat > "$work/repo/scripts/prepare-merged-marketplace-release.sh" <<'STUB'
+#!/usr/bin/env bash
+set -euo pipefail
+printf 'called\n' >> "$CALLED"
+release= ci=
+while (($#)); do
+  case $1 in
+    --release) release=$2; shift 2 ;;
+    --ci-run) ci=$2; shift 2 ;;
+    --repo|--output) shift 2 ;;
+    *) exit 91 ;;
+  esac
+done
+[[ $release == "$CURRENT" && $ci == latest ]] || exit 92
+jq -n --arg release "$release" '{status:"NO_VERSION_CHANGE",releaseCommit:$release,ciRunId:42}'
+STUB
+cat > "$work/bin/git" <<'STUB'
+#!/usr/bin/env bash
+if [[ ${FAIL_HEAD:-false} == true && " $* " == *' rev-parse '* ]]; then
+  printf '%s\n' "$CURRENT"
+  exit 73
+fi
+exec "$REAL_GIT" "$@"
+STUB
+chmod +x "$work/bin/git"
+real_git=$(command -v git)
+pass=0 fail=0
+for mode in ordinary queued wrong-ci failed-head; do
+  : > "$work/called"; : > "$work/outputs"; : > "$work/summary"
+  selected=$current; [[ $mode != queued ]] || selected=$dispatch
+  ci=latest; [[ $mode != wrong-ci ]] || ci=41
+  failed=false; [[ $mode != failed-head ]] || failed=true
+  status=0
+  (cd "$work/repo" && CALLED="$work/called" CURRENT="$current" REAL_GIT="$real_git" \
+    FAIL_HEAD=$failed PATH="$work/bin:$PATH" RELEASE_COMMIT="$selected" CI_RUN=$ci \
+    REPOSITORY=example/catalogue RUNNER_TEMP="$work" GITHUB_OUTPUT="$work/outputs" \
+    GITHUB_STEP_SUMMARY="$work/summary" bash -euo pipefail "$work/step") \
+    > "$work/out" 2> "$work/error" || status=$?
+  ok=false
+  case $mode in
+    ordinary|queued)
+      if [[ $status == 0 ]] && grep -qx "release=$current" "$work/outputs"; then ok=true; fi ;;
+    wrong-ci) [[ $status != 0 && ! -s $work/outputs ]] && ok=true ;;
+    failed-head) [[ $status != 0 && ! -s $work/called && ! -s $work/outputs ]] && ok=true ;;
+  esac
+  if [[ $ok == true ]]; then printf 'PASS: publication identity %s\n' "$mode"; pass=$((pass+1))
+  else printf 'FAIL: publication identity %s (exit %s)\n' "$mode" "$status"; fail=$((fail+1)); fi
+done
+printf 'Publication identity controls: %s pass, %s fail\n' "$pass" "$fail"
+[[ $fail == 0 ]]
diff --git a/scripts/propose-marketplace-release.sh b/scripts/propose-marketplace-release.sh
index ce0ca7de..a704d607 100644
--- a/scripts/propose-marketplace-release.sh
+++ b/scripts/propose-marketplace-release.sh
@@ -76,7 +76,7 @@ ci_snapshot() {
   fi
   gh api --hostname github.com "repos/$repo/actions/runs/$ci" > "$temp/ci"
   json_object_unique "$temp/ci" || fail 'ambiguous CI observation'
-  jq -es --arg repo "$repo" --arg source "$source" --argjson ci "$ci" 'length==1 and (.[0]|.id==$ci and .path==".github/workflows/ci.yaml" and .event=="push" and .status=="completed" and .conclusion=="success" and .head_branch=="main" and .head_sha==$source and .repository.full_name==$repo and .head_repository.full_name==$repo)' "$temp/ci" >/dev/null || fail 'exact successful main CI is required'
+  jq -es --arg repo "$repo" --arg source "$source" --argjson ci "$ci" 'length==1 and (.[0]|.id==$ci and (.path==".github/workflows/ci.yaml" or .path==".github/workflows/ci.yaml@main" or .path==".github/workflows/ci.yaml@refs/heads/main") and .event=="push" and .status=="completed" and .conclusion=="success" and .head_branch=="main" and .head_sha==$source and .repository.full_name==$repo and .head_repository.full_name==$repo)' "$temp/ci" >/dev/null || fail 'exact successful main CI is required'
 }
 # Refuse any local tag-object change since candidate preparation.
 local_tags_unchanged() {
diff --git a/scripts/propose-marketplace-release.test.sh b/scripts/propose-marketplace-release.test.sh
index cd44bdf9..67fd4b43 100644
--- a/scripts/propose-marketplace-release.test.sh
+++ b/scripts/propose-marketplace-release.test.sh
@@ -77,7 +77,18 @@ elif [ "$endpoint" = repos/example/catalogue/actions/runs/42 ]; then
   if [ "$mode" = duplicate-ci ]; then
     jq -c . "$FORGE_STATE/ci" | sed 's/^{/{"conclusion":"failure",/'; exit 0
   fi
-  case "$mode" in ci-pending) jq '.status="in_progress"|.conclusion=null' "$FORGE_STATE/ci";; ci-foreign) jq '.head_repository.full_name="other/catalogue"' "$FORGE_STATE/ci";; ci-stale) jq '.head_sha="aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa"' "$FORGE_STATE/ci";; ci-event) jq '.event="workflow_dispatch"' "$FORGE_STATE/ci";; ci-workflow) jq '.path=".github/workflows/other.yaml"' "$FORGE_STATE/ci";; *) cat "$FORGE_STATE/ci";; esac
+  case "$mode" in
+    ci-qualified-main) jq '.path=".github/workflows/ci.yaml@main"' "$FORGE_STATE/ci";;
+    ci-qualified-full-main) jq '.path=".github/workflows/ci.yaml@refs/heads/main"' "$FORGE_STATE/ci";;
+    ci-qualified-other) jq '.path=".github/workflows/other.yaml@main"' "$FORGE_STATE/ci";;
+    ci-qualified-feature) jq '.path=".github/workflows/ci.yaml@feature"' "$FORGE_STATE/ci";;
+    ci-pending) jq '.status="in_progress"|.conclusion=null' "$FORGE_STATE/ci";;
+    ci-foreign) jq '.head_repository.full_name="other/catalogue"' "$FORGE_STATE/ci";;
+    ci-stale) jq '.head_sha="aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa"' "$FORGE_STATE/ci";;
+    ci-event) jq '.event="workflow_dispatch"' "$FORGE_STATE/ci";;
+    ci-workflow) jq '.path=".github/workflows/other.yaml"' "$FORGE_STATE/ci";;
+    *) cat "$FORGE_STATE/ci";;
+  esac
 elif [ "$endpoint" = graphql ] && [ "$paginated" = true ]; then
   count=$(cat "$FORGE_STATE/reads" 2>/dev/null || printf 0)
   count=$((count+1)); printf '%s\n' "$count" > "$FORGE_STATE/reads"
@@ -275,6 +286,10 @@ run_case() {
   passed=$((passed+1))
 }
 run_case 'read-only preparation' none false PREPARED
+run_case 'native main-qualified CI path' ci-qualified-main false PREPARED
+run_case 'native fully-qualified main CI path' ci-qualified-full-main false PREPARED
+run_case 'qualified unrelated workflow refuses' ci-qualified-other false REFUSED
+run_case 'qualified feature workflow refuses' ci-qualified-feature false REFUSED
 run_case 'explicit signed draft creation' none true CREATED
 run_case 'explicit empty GraphQL errors remain valid' empty-errors true CREATED
 for fault in null-errors commit-null-errors readback-null-errors; do run_case "$fault is refused" "$fault" true REFUSED; done
diff --git a/scripts/verify-marketplace-release.sh b/scripts/verify-marketplace-release.sh
index 8811e8cc..56f7a77c 100644
--- a/scripts/verify-marketplace-release.sh
+++ b/scripts/verify-marketplace-release.sh
@@ -87,7 +87,8 @@ else
   [ "$parents" = "$source" ] || fail 'release must have exactly the selected source as its only parent'
 fi
 # Only the marketplace manifests may change. Include mode changes, deletions and renames.
-git diff-tree --no-relative --no-commit-id --name-only -r --no-renames --no-ext-diff -z "$source" "$release" > "$temp/changes"
+# Git can consult the caller index even for tree diffs; keep configured observation hooks inert.
+git -c core.fsmonitor=false diff-tree --no-relative --no-commit-id --name-only -r --no-renames --no-ext-diff -z "$source" "$release" > "$temp/changes"
 path=''
 while IFS= read -r -d '' path; do
   case "$path" in
diff --git a/scripts/verify-marketplace-release.test.sh b/scripts/verify-marketplace-release.test.sh
index de2cec52..45157abc 100644
--- a/scripts/verify-marketplace-release.test.sh
+++ b/scripts/verify-marketplace-release.test.sh
@@ -64,7 +64,7 @@ exec "$REAL_FIND" "$@"
 STUB
 cat > "$work/bin/git" <<'STUB'
 #!/usr/bin/env bash
-[[ ${DIFF_MODE:-} != empty || $1 != diff-tree ]] || exit 0
+[[ ${DIFF_MODE:-} != empty || " $* " != *' diff-tree '* ]] || exit 0
 exec "$REAL_GIT" "$@"
 STUB
 chmod +x "$work/bin/find" "$work/bin/git"
@@ -80,6 +80,22 @@ git -C "$repo" add content; git -C "$repo" commit --amend --no-edit -q
 release=$(git -C "$repo" rev-parse HEAD)
 PATH="$work/bin:$PATH" DIFF_MODE=empty REAL_GIT="$real_git" REAL_FIND="$real_find" reject 'empty successful diff inventory cannot hide unrelated content'
 incremental; accept 'single-parent manifest-only release' 1.3.0
+# Observation must not execute a checkout-configured filesystem hook.
+export FS_MARKER="$work/fsmonitor-called"
+cat > "$work/fsmonitor" <<'HOOK'
+#!/bin/sh
+printf 'observed\n' >> "$FS_MARKER"
+exit 1
+HOOK
+chmod +x "$work/fsmonitor"
+git -C "$repo" config core.fsmonitor "$work/fsmonitor"
+cp "$repo/.git/index" "$work/index-before"
+cp "$repo/.git/config" "$work/config-before"
+accept 'filesystem observation hook is inert' 1.3.0
+[ ! -e "$FS_MARKER" ] || fail 'verification executed a filesystem observation hook'
+cmp -s "$repo/.git/index" "$work/index-before" || fail 'verification changed the caller index'
+cmp -s "$repo/.git/config" "$work/config-before" || fail 'verification changed the caller configuration'
+passed=$((passed+1))
 incremental
 unusual_repo="$repo$(printf '\001'):quoted\\path"
 mv "$repo" "$unusual_repo"; repo="$unusual_repo"