feat: initial open marketplace with llm-security, config-audit, ultraplan-local

plugins/llm-security/commands/diff.md

@@ -0,0 +1,98 @@
+---
+name: security:diff
+description: Compare scan results against a stored baseline — shows new, resolved, unchanged, and moved findings
+allowed-tools: Bash, Read, AskUserQuestion
+model: sonnet
+---
+
+# /security diff [path]
+
+Run a deterministic deep scan and compare results against a stored baseline. Shows what changed since the last saved scan.
+
+## Step 1: Check for Existing Baseline
+
+Determine plugin root (parent of this `commands/` folder) and target path from `$ARGUMENTS` (default `.`).
+
+Check if a baseline already exists:
+
+```bash
+ls -la <plugin-root>/reports/baselines/ 2>/dev/null
+```
+
+If baseline files exist for the target, inform the user:
+
+> A baseline already exists. Running `/security diff` will overwrite it with new results.
+
+Use AskUserQuestion to ask: "Overwrite existing baseline and run diff? (The previous baseline will be replaced.)"
+
+If the user declines, exit without scanning. If the user confirms (or no baseline exists yet), proceed to Step 2.
+
+## Step 2: Run Scan with Baseline Comparison
+
+```bash
+node <plugin-root>/scanners/scan-orchestrator.mjs "<target>" --baseline --save-baseline
+```
+
+Parse stdout JSON. The scan runs all 9 scanners, diffs against any existing baseline, then saves the new results as the current baseline.
+
+If no baseline exists yet (`diff` is `null` in output), this is a first run — report that a baseline has been created and show the current scan summary instead of a diff.
+
+## Step 3: Display Results
+
+### First run (no prior baseline)
+
+```
+## Baseline Created
+
+No prior baseline found. Current scan saved as baseline.
+
+**Findings:** XC XH XM XL XI | **Risk Score:** X/100 | **Verdict:** ALLOW/WARNING/BLOCK
+
+Run `/security diff` again after making changes to see the delta.
+```
+
+### Subsequent runs (diff available)
+
+```
+## Security Diff: <target>
+
+**Baseline:** <baseline_timestamp> → **Current:** <now>
+
+### Summary
+| Category | Count |
+|----------|-------|
+| New      | X     |
+| Resolved | X     |
+| Moved    | X     |
+| Unchanged| X     |
+```
+
+For **New** findings (sorted critical → info):
+
+```
+### New Findings (X)
+| # | Severity | Scanner | Title | File | OWASP |
+```
+
+For **Resolved** findings:
+
+```
+### Resolved Findings (X)
+| # | Severity | Scanner | Title | File | OWASP |
+```
+
+For **Moved** findings (only if count > 0):
+
+```
+### Moved Findings (X)
+| # | Severity | Scanner | Title | File | Previous Location |
+```
+
+Omit Unchanged findings from the output — they add noise. Mention count in summary only.
+
+## Step 4: Advisory
+
+- If new CRITICAL/HIGH findings: "**Action required:** X new critical/high findings since baseline."
+- If resolved > new: "**Improving:** more findings resolved than introduced."
+- If new > 0 and resolved == 0: "**Regression:** X new findings, none resolved."
+- If new == 0 and resolved == 0: "**Stable:** no changes since baseline."