fix: handle null content in relation-type search results

BM CLI returns relation-type results with no content field.
Plugin crashed on r.content.length when content was undefined.
Added null coalescing (r.content ?? "") in search.ts and memory-provider.ts.

Author: bm-clawd

tools/memory-provider.ts

@@ -81,7 +81,7 @@ async function searchActiveTasks(
       for (const r of results) {
         const score = r.score ? ` (${r.score.toFixed(2)})` : ""
         const preview =
-          r.content.length > 200 ? `${r.content.slice(0, 200)}…` : r.content
+          (r.content ?? "").length > 200 ? `${(r.content ?? "").slice(0, 200)}…` : (r.content ?? "")
         matches.push(
           `- **${r.title}**${score} — ${r.file_path}\n  > ${preview.replace(/\n/g, "\n  > ")}`,
         )
@@ -195,9 +195,9 @@ export function registerMemoryProvider(
                 .map((r) => {
                   const score = r.score ? ` (${r.score.toFixed(2)})` : ""
                   const preview =
-                    r.content.length > 200
-                      ? `${r.content.slice(0, 200)}…`
-                      : r.content
+                    (r.content ?? "").length > 200
+                      ? `${(r.content ?? "").slice(0, 200)}…`
+                      : (r.content ?? "")
                   const source = r.file_path || r.permalink
                   return `- ${source}${score}\n  > ${preview.replace(/\n/g, "\n  > ")}`
                 })

tools/search.ts

@@ -44,10 +44,11 @@ export function registerSearchTool(
           const text = results
             .map((r, i) => {
               const score = r.score ? ` (${(r.score * 100).toFixed(0)}%)` : ""
+              const content = r.content ?? ""
               const preview =
-                r.content.length > 200
-                  ? `${r.content.slice(0, 200)}...`
-                  : r.content
+                content.length > 200
+                  ? `${content.slice(0, 200)}...`
+                  : content
               return `${i + 1}. **${r.title}**${score}\n   ${preview}`
             })
             .join("\n\n")