fix: scanner timeouts, semgrep memory cap, syft remote lookups, Script error (#78)

## Summary

- **Scan produces no results in Orca** — semgrep (`--config=auto`, unbounded memory) and syft (remote license network calls) were getting OOM-killed or hanging in resource-constrained Orca containers. Scan would "complete" with 0 findings/SBOMs silently because each scanner failure is caught and logged as a warning.
- **Dashboard Script error spam** — `document::Script` in Dioxus 0.7 needs a single text node child for inline scripts; `dangerous_inner_html` was invalid and spammed the error log on every unauthenticated page load.

## Changes

| File | Change |
|------|--------|
| `semgrep.rs` | Add `--max-memory 500 --jobs 1`; 10-minute timeout |
| `syft.rs` | Remove remote license lookup env vars; 5-minute timeout |
| `gitleaks.rs` | 5-minute timeout |
| `app_shell.rs` | Fix `dangerous_inner_html` → text child in `document::Script` |

## Test plan

- [ ] Trigger a scan on a repo in Orca — findings and SBOM entries should now appear
- [ ] Agent logs should show timeout/error warnings rather than silent empty results when tools are killed
- [ ] Navigate to dashboard unauthenticated — Script error gone from logs
- [ ] Verify scans work end-to-end with `docker compose up`

---------

Co-authored-by: Sharang Parnerkar <30073382+mighty840@users.noreply.github.com>
Reviewed-on: #78

compliance-agent/src/pipeline/semgrep.rs

@@ -19,15 +19,30 @@ impl Scanner for SemgrepScanner {
 
     #[tracing::instrument(skip_all)]
     async fn scan(&self, repo_path: &Path, repo_id: &str) -> Result<ScanOutput, CoreError> {
-        let output = tokio::process::Command::new("semgrep")
-            .args(["--config=auto", "--json", "--quiet"])
-            .arg(repo_path)
-            .output()
-            .await
-            .map_err(|e| CoreError::Scanner {
-                scanner: "semgrep".to_string(),
-                source: Box::new(e),
-            })?;
+        let output = tokio::time::timeout(
+            std::time::Duration::from_secs(600),
+            tokio::process::Command::new("semgrep")
+                .args([
+                    "--config=auto",
+                    "--json",
+                    "--quiet",
+                    "--max-memory",
+                    "500",
+                    "--jobs",
+                    "1",
+                ])
+                .arg(repo_path)
+                .output(),
+        )
+        .await
+        .map_err(|_| CoreError::Scanner {
+            scanner: "semgrep".to_string(),
+            source: "timed out after 10 minutes".into(),
+        })?
+        .map_err(|e| CoreError::Scanner {
+            scanner: "semgrep".to_string(),
+            source: Box::new(e),
+        })?;
 
         if !output.status.success() && output.stdout.is_empty() {
             let stderr = String::from_utf8_lossy(&output.stderr);