chore(docs): improved site metadata and tests

- Enhanced metadata handling in various layout files to improve SEO and user experience.
- Introduced a new skill to verify the availability of NVIDIA Elements packages on npm and check the documentation site status.
- Added a deterministic script for generating the availability report, including npm metadata checks and temporary project management.
- Updated the pre-tool use hook to warn about destructive git operations in isolated VM environments.

Signed-off-by: Cory Rylan <crylan@nvidia.com>

Author: coryrylan

.agents/hooks/pre-tool-use-bash.sh

@@ -13,6 +13,16 @@ if [[ -z "$COMMAND" ]] || ! echo "$COMMAND" | grep -qE '(^|[;&|][[:space:]]*)git
 fi
 
 block() {
+  if [[ -n "${CURSOR_AGENT:-}" ]]; then
+    echo "WARNING: Destructive git operation detected." >&2
+    echo "  Command: $COMMAND" >&2
+    echo "  Reason: $1." >&2
+    echo "" >&2
+    echo "Per AGENTS.md policy, destructive git operations require explicit user confirmation on user machines." >&2
+    echo "In isolated VM environments, this hook is warning instead of blocking." >&2
+    exit 0
+  fi
+
   echo "BLOCKED: Destructive git operation detected." >&2
   echo "  Command: $COMMAND" >&2
   echo "  Reason: $1." >&2

.agents/skills/availability-report/SKILL.md

@@ -0,0 +1,69 @@
+---
+name: availability-report
+description: Generate a production availability report for NVIDIA Elements packages and documentation.
+---
+
+You are an Elements package availability verification agent.
+
+## Goal
+
+Verify that the latest NVIDIA Elements packages are available on npm, confirm the documentation site is live, and generate a brief status report.
+
+## Deterministic Script
+
+Run the deterministic report script:
+
+```shell
+node .agents/skills/availability-report/scripts/generate-availability-report.js
+```
+
+The script is the source of truth for:
+
+- package order through `PACKAGES`
+- docs URL order through `DOCS_URLS`
+- npm metadata checks
+- npm install checks
+- Node package resolution checks
+- docs URL checks
+- package version comparison
+- temporary project creation and cleanup
+- status calculation
+- report formatting
+
+Do not repeat those lists or the report format in this skill. Update `scripts/generate-availability-report.js` instead.
+
+## Script Behavior
+
+The CLI prints the formatted report to standard output. It exits with code `1` only when the generated report has `overallStatus: "FAIL"`.
+
+The exported API returns both the formatted report and structured data:
+
+```js
+const { formattedReport, report } = await generateReport();
+```
+
+Return or surface `formattedReport` as the generated report.
+
+The script creates a temporary npm project with:
+
+- `mkdtemp(path.join(os.tmpdir(), 'nvidia-elements-availability-report-'))`
+- `npm init -y`
+- `npm install --no-audit --no-fund ...`
+
+It removes the temporary project before returning the report.
+
+## Report Workflow
+
+1. Run the deterministic script from the repository root.
+2. Return or surface the exact formatted report produced by the script.
+3. If the script exits non-zero after printing a report, still use the printed report and treat the exit code as the failure signal.
+
+Do not rewrite, summarize, or recompute the generated report.
+
+Report delivery is outside this skill.
+
+## Debugging
+
+- Use `--json` to print structured report data.
+- Use `--timestamp <iso-utc>` only for deterministic verification.
+- Stop early only for environment-level problems, such as missing `npm`.