fix(convert): quote YAML frontmatter values (#778)

Signed-off-by: Mr-Neutr0n <harikp2002@gmail.com>

scripts/test-convert-frontmatter.sh

@@ -0,0 +1,39 @@
+#!/usr/bin/env bash
+# Regression coverage for YAML frontmatter emitted by convert.sh.
+
+set -euo pipefail
+
+SCRIPT_DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
+REPO_ROOT="$(cd "$SCRIPT_DIR/.." && pwd)"
+OUTPUT_DIR="$(mktemp -d "${TMPDIR:-/tmp}/agency-convert-frontmatter.XXXXXX")"
+trap 'rm -rf "$OUTPUT_DIR"' EXIT
+
+for tool in gemini-cli opencode qwen; do
+  "$SCRIPT_DIR/convert.sh" --tool "$tool" --out "$OUTPUT_DIR" >/dev/null
+done
+
+assert_quoted() {
+  local file="$1" field="$2" line prefix
+  line="$(awk -v key="$field" '$0 ~ "^" key ":" { print; exit }' "$file")"
+  prefix="$field: '"
+  [[ "$line" == "$prefix"*"'" ]] || {
+    printf 'Expected %s in %s to be a single-quoted YAML scalar, got: %s\n' \
+      "$field" "$file" "$line" >&2
+    return 1
+  }
+}
+
+assert_quoted \
+  "$OUTPUT_DIR/gemini-cli/agents/developer-tooling-engineer.md" \
+  description
+assert_quoted \
+  "$OUTPUT_DIR/opencode/agents/developer-tooling-engineer.md" \
+  name
+assert_quoted \
+  "$OUTPUT_DIR/opencode/agents/developer-tooling-engineer.md" \
+  description
+assert_quoted \
+  "$OUTPUT_DIR/qwen/agents/programmatic-display-buyer.md" \
+  tools
+
+echo "PASS: converted YAML frontmatter keeps scalar values safely quoted"