diff --git a/.github/workflows/scorecard.yml b/.github/workflows/scorecard.yml
new file mode 100644
index 0000000..32cb0cf
--- /dev/null
+++ b/.github/workflows/scorecard.yml
@@ -0,0 +1,62 @@
+# OpenSSF Scorecard — security supply-chain posture for KofTwentyTwo/Jarvis.
+#
+# Issue #178. Scorecard scores 18 security checks (Branch-Protection, Code-Review,
+# Pinned-Dependencies, SAST, Token-Permissions, etc.) and publishes results as
+# SARIF to GitHub code-scanning. A weekly schedule keeps the score fresh; we
+# also re-run on every push to develop so significant posture regressions show
+# up promptly. The badge in README.md links back to the public scorecard page.
+#
+# Permissions are the canonical Scorecard set:
+#   - id-token: write          OIDC for publish-results
+#   - contents: read           read repo tree
+#   - security-events: write   upload SARIF to code-scanning
+#
+# This workflow runs on github-hosted ubuntu-latest. Self-hosted Grogu is not
+# used here -- Scorecard is short, network-bound, and benefits from a clean
+# ephemeral environment.
+#
+# Workflow consumes no untrusted user inputs (no github.event.* interpolation
+# in run: blocks), so it is safe from workflow-injection patterns.
+
+name: OpenSSF Scorecard
+
+on:
+  schedule:
+    # Mondays at 06:00 UTC. Off-peak relative to weekday push spikes.
+    - cron: "0 6 * * 1"
+  push:
+    branches: [develop]
+  workflow_dispatch:
+
+permissions: read-all
+
+jobs:
+  analysis:
+    name: Scorecard analysis
+    runs-on: ubuntu-latest
+    permissions:
+      id-token: write
+      contents: read
+      security-events: write
+
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v4
+        with:
+          persist-credentials: false
+
+      - name: Run Scorecard
+        uses: ossf/scorecard-action@v2.4.0
+        with:
+          results_file: results.sarif
+          results_format: sarif
+          # publish_results: true uploads anonymized scores to the OpenSSF
+          # public dataset, which is what powers the README badge URL
+          # (api.scorecard.dev). Safe for a public repo; would need
+          # reconsidering if the repo were ever made private.
+          publish_results: true
+
+      - name: Upload SARIF to code-scanning
+        uses: github/codeql-action/upload-sarif@v3
+        with:
+          sarif_file: results.sarif
diff --git a/README.md b/README.md
index b8f0e1b..6ed8b28 100644
--- a/README.md
+++ b/README.md
@@ -8,6 +8,7 @@
 [![Issues](https://img.shields.io/github/issues/KofTwentyTwo/Jarvis)](https://github.com/KofTwentyTwo/Jarvis/issues)
 [![Platform: macOS 26](https://img.shields.io/badge/platform-macOS%2026%20Tahoe-blue)](https://www.apple.com/macos/)
 [![Swift 6](https://img.shields.io/badge/swift-6.0-orange)](https://swift.org)
+[![OpenSSF Scorecard](https://api.scorecard.dev/projects/github.com/KofTwentyTwo/Jarvis/badge)](https://scorecard.dev/viewer/?uri=github.com/KofTwentyTwo/Jarvis)
 
 Jarvis is a hybrid native + embedded-web macOS app that runs as an ambient
 menu-bar presence. A Swift host owns the operating system (mic, camera,
diff --git a/scripts/build-webview.sh b/scripts/build-webview.sh
index 181c8e2..e2bdf13 100755
--- a/scripts/build-webview.sh
+++ b/scripts/build-webview.sh
@@ -77,6 +77,16 @@ pnpm --filter @jarvis/hud build
 
 DEST="$REPO_ROOT/App/Resources/webview"
 mkdir -p "$DEST"
+mkdir -p "$DEST/assets"
+
+# Issue #46: Vite emits content-hashed asset names (e.g. `index-CXPb0I5z.js`),
+# so the active bundle filename changes on every dependency or source edit.
+# Without explicit cleanup, stale chunks accumulate in `assets/` because we
+# don't pass `--delete` to rsync below. Sweep the asset glob (JS + maps + CSS)
+# before the rsync drops the fresh bundle. `bus-harness.html`, `index.html`,
+# and the directory's `.gitignore` live one level up (in $DEST), not in
+# $DEST/assets, so they are not at risk from this rm.
+rm -f "$DEST"/assets/*.js "$DEST"/assets/*.js.map "$DEST"/assets/*.css "$DEST"/assets/*.css.map
 
 echo "[build-webview] rsync dist/ -> $DEST"
 # --exclude bus-harness.html: keep 02-03's committed copy intact (parity
@@ -85,6 +95,7 @@ echo "[build-webview] rsync dist/ -> $DEST"
 # --exclude .gitignore: preserve the App/Resources/webview/.gitignore that
 #   lets index.html stay source-committed while assets/ regenerates.
 # We do NOT pass --delete: other vendored assets coexist in this dir.
+# (The explicit `rm -f` above handles stale `assets/` chunks; see #46.)
 rsync -a \
       --exclude=bus-harness.html \
       --exclude=.gitignore \