fix(scanner): clamp oversized MergerFS inodes before storage (#30)

* fix(scanner): clamp oversized MergerFS inodes before storage

MergerFS generates synthetic unsigned 64-bit inodes by hashing file paths.
Values above 2^63-1 overflow PostgreSQL's signed bigint column, crashing
the scanner with 'value out of range for type bigint'.

Switch all file stat() calls to stat(path, { bigint: true }) to read
inodes as precise BigInt values instead of lossy JS numbers. Introduce
clampIno(ino: bigint): number which returns 0 for any inode exceeding
PostgreSQL's bigint max - 0 is the existing sentinel meaning 'rename
detection disabled', so no other code needs to change.

The fix covers all four code paths that write ino to a FileStat:
statFilesIntoAcc and buildSingleBookCandidate in walk.ts, plus the two
targeted-scan paths in scanner.service.ts.

Fixes #19

* ci: add maintainer-gated PR GHCR image publish

---------

Signed-off-by: neon <18559658+neonsolstice@users.noreply.github.com>

.github/workflows/ci.yml

@@ -23,6 +23,8 @@ env:
   FORCE_JAVASCRIPT_ACTIONS_TO_NODE24: "true"
   NODE_VERSION: "24"
   PNPM_VERSION: "10"
+  REGISTRY: ghcr.io
+  IMAGE_NAME: ${{ github.repository }}
 
 jobs:
   dependency-review:
@@ -246,7 +248,7 @@ jobs:
       (needs.dependency-review.result == 'success' || needs.dependency-review.result == 'skipped') &&
       needs.detect-changes.result == 'success'
     strategy:
-      fail-fast: false
+      fail-fast: ${{ github.event_name == 'pull_request' }}
       matrix:
         package: [server, client]
         include:
@@ -318,7 +320,7 @@ jobs:
       (needs.dependency-review.result == 'success' || needs.dependency-review.result == 'skipped') &&
       needs.detect-changes.result == 'success'
     strategy:
-      fail-fast: false
+      fail-fast: ${{ github.event_name == 'pull_request' }}
       matrix:
         package: [server, client]
         include:
@@ -379,7 +381,7 @@ jobs:
       (needs.dependency-review.result == 'success' || needs.dependency-review.result == 'skipped') &&
       needs.detect-changes.result == 'success'
     strategy:
-      fail-fast: false
+      fail-fast: ${{ github.event_name == 'pull_request' }}
       matrix:
         package: [server, client]
         include:
@@ -556,6 +558,110 @@ jobs:
           echo "e2e-setup=${{ needs.e2e-setup.result }}"
           echo "e2e=${{ needs.e2e.result }}"
 
+  pr-image-scan:
+    name: PR Image Scan
+    runs-on: ubuntu-latest
+    needs: [ci-gate]
+    timeout-minutes: 45
+    if: >
+      always() &&
+      github.event_name == 'pull_request' &&
+      needs.ci-gate.result == 'success'
+    permissions:
+      contents: read
+    steps:
+      - name: Checkout
+        uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # v6
+
+      - name: Prepare PR image tag
+        id: pr-meta
+        shell: bash
+        env:
+          PR_NUMBER: ${{ github.event.pull_request.number }}
+          HEAD_SHA: ${{ github.event.pull_request.head.sha }}
+        run: |
+          set -euo pipefail
+          short_sha="${HEAD_SHA:0:12}"
+          scan_tag="pr-scan-${PR_NUMBER}-${short_sha}"
+          echo "scan_tag=${scan_tag}" >> "$GITHUB_OUTPUT"
+
+      - name: Set up Docker Buildx
+        uses: docker/setup-buildx-action@4d04d5d9486b7bd6fa91e7baf45bbb4f8b9deedd # v4.0.0
+
+      - name: Build image
+        uses: docker/build-push-action@bcafcacb16a39f128d818304e6c9c0c18556b85f # v7.1.0
+        with:
+          context: .
+          file: ./Dockerfile
+          push: false
+          load: true
+          tags: ${{ env.REGISTRY }}/${{ env.IMAGE_NAME }}:${{ steps.pr-meta.outputs.scan_tag }}
+          platforms: linux/amd64
+          cache-from: type=gha,scope=ci-yml-pr-image
+          cache-to: type=gha,mode=max,scope=ci-yml-pr-image
+
+      - name: Scan image with Trivy
+        uses: aquasecurity/trivy-action@ed142fd0673e97e23eac54620cfb913e5ce36c25 # v0.36.0
+        with:
+          image-ref: ${{ env.REGISTRY }}/${{ env.IMAGE_NAME }}:${{ steps.pr-meta.outputs.scan_tag }}
+          format: table
+          vuln-type: os,library
+          severity: CRITICAL,HIGH
+          ignore-unfixed: true
+          exit-code: "1"
+
+  pr-image-publish:
+    name: PR Image Publish
+    runs-on: ubuntu-latest
+    needs: [ci-gate, pr-image-scan]
+    timeout-minutes: 45
+    if: >
+      always() &&
+      github.event_name == 'pull_request' &&
+      needs.ci-gate.result == 'success' &&
+      needs.pr-image-scan.result == 'success' &&
+      github.event.pull_request.head.repo.full_name == github.repository &&
+      contains(fromJSON('["OWNER","MEMBER","COLLABORATOR"]'), github.event.pull_request.author_association)
+    permissions:
+      contents: read
+      packages: write
+    steps:
+      - name: Checkout
+        uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # v6
+
+      - name: Prepare PR publish tag
+        id: pr-meta
+        shell: bash
+        env:
+          PR_NUMBER: ${{ github.event.pull_request.number }}
+          HEAD_SHA: ${{ github.event.pull_request.head.sha }}
+        run: |
+          set -euo pipefail
+          short_sha="${HEAD_SHA:0:12}"
+          publish_tag="pr-${PR_NUMBER}-${short_sha}"
+          echo "publish_tag=${publish_tag}" >> "$GITHUB_OUTPUT"
+
+      - name: Set up Docker Buildx
+        uses: docker/setup-buildx-action@4d04d5d9486b7bd6fa91e7baf45bbb4f8b9deedd # v4.0.0
+
+      - name: Log in to GHCR
+        uses: docker/login-action@4907a6ddec9925e35a0a9e82d7399ccc52663121 # v4.1.0
+        with:
+          registry: ${{ env.REGISTRY }}
+          username: ${{ github.repository_owner }}
+          password: ${{ secrets.GHCR_TOKEN != '' && secrets.GHCR_TOKEN || github.token }}
+
+      - name: Build and push PR image
+        uses: docker/build-push-action@bcafcacb16a39f128d818304e6c9c0c18556b85f # v7.1.0
+        with:
+          context: .
+          file: ./Dockerfile
+          push: true
+          tags: ${{ env.REGISTRY }}/${{ env.IMAGE_NAME }}:${{ steps.pr-meta.outputs.publish_tag }}
+          platforms: linux/amd64
+          cache-from: type=gha,scope=ci-yml-pr-image
+          cache-to: type=gha,mode=max,scope=ci-yml-pr-image
+
   ci-performance:
     name: CI Performance
     runs-on: ubuntu-latest