diff --git a/.worker-builds/arcrun-kbdb/worker.mjs b/.worker-builds/arcrun-kbdb/worker.mjs
index 6cee6a1..1407412 100644
--- a/.worker-builds/arcrun-kbdb/worker.mjs
+++ b/.worker-builds/arcrun-kbdb/worker.mjs
@@ -2189,11 +2189,18 @@ async function deprecateEntriesByLibrary(db, ownerId, library) {
 var MAX_LIKE_Q_BYTES = 48;
 var MAX_LIKE_TERMS = 6;
 var utf8Len = (s) => new TextEncoder().encode(s).length;
+var LIKE_ESCAPE = "\\";
+var CONTENT_LIKE = `content LIKE ? ESCAPE '${LIKE_ESCAPE}'`;
+function escapeLikeLiteral(s) {
+  return s.replace(/[\\%_]/g, (ch) => LIKE_ESCAPE + ch);
+}
+var likeBytes = (s) => utf8Len(escapeLikeLiteral(s));
+var likePattern = (s) => `%${escapeLikeLiteral(s)}%`;
 function chunkByBytes(s, maxBytes) {
   const out = [];
   let cur = "";
   for (const ch of s) {
-    if (utf8Len(cur + ch) > maxBytes) {
+    if (likeBytes(cur + ch) > maxBytes) {
       if (cur) out.push(cur);
       cur = ch;
     } else {
@@ -2204,8 +2211,8 @@ function chunkByBytes(s, maxBytes) {
   return out;
 }
 function buildContentLike(q) {
-  if (utf8Len(q) <= MAX_LIKE_Q_BYTES) {
-    return { conds: ["content LIKE ?"], params: [`%${q}%`], split: false };
+  if (likeBytes(q) <= MAX_LIKE_Q_BYTES) {
+    return { conds: [CONTENT_LIKE], params: [likePattern(q)], split: false };
   }
   const terms = [];
   for (const word of q.split(/\s+/).filter(Boolean)) {
@@ -2217,8 +2224,8 @@ function buildContentLike(q) {
   }
   if (terms.length === 0) terms.push(chunkByBytes(q, MAX_LIKE_Q_BYTES)[0] ?? "");
   return {
-    conds: terms.map(() => "content LIKE ?"),
-    params: terms.map((t) => `%${t}%`),
+    conds: terms.map(() => CONTENT_LIKE),
+    params: terms.map(likePattern),
     split: true
   };
 }
@@ -2335,7 +2342,7 @@ function buildSearchScore(q) {
   if (terms.length === 0) {
     const m = buildContentLike(trimmed);
     return {
-      scoreExpr: m.conds.map(() => "CASE WHEN content LIKE ? THEN 1 ELSE 0 END").join(" + "),
+      scoreExpr: m.conds.map(() => `CASE WHEN ${CONTENT_LIKE} THEN 1 ELSE 0 END`).join(" + "),
       scoreParams: m.params,
       terms: [],
       legacyShape: true
@@ -2344,14 +2351,14 @@ function buildSearchScore(q) {
   const parts = [];
   const params = [];
   for (const { term, weight } of terms) {
-    parts.push(`CASE WHEN content LIKE ? THEN ${weight} ELSE 0 END`);
-    params.push(`%${term}%`);
+    parts.push(`CASE WHEN ${CONTENT_LIKE} THEN ${weight} ELSE 0 END`);
+    params.push(likePattern(term));
   }
   const single = terms.length === 1 && terms[0].term === trimmed;
-  if (!single && utf8Len(trimmed) <= MAX_LIKE_Q_BYTES) {
+  if (!single && likeBytes(trimmed) <= MAX_LIKE_Q_BYTES) {
     const bonus = terms.reduce((s, t) => s + t.weight, 0);
-    parts.push(`CASE WHEN content LIKE ? THEN ${bonus} ELSE 0 END`);
-    params.push(`%${trimmed}%`);
+    parts.push(`CASE WHEN ${CONTENT_LIKE} THEN ${bonus} ELSE 0 END`);
+    params.push(likePattern(trimmed));
   }
   return { scoreExpr: parts.join(" + "), scoreParams: params, terms, legacyShape: single };
 }
diff --git a/.worker-builds/manifest.json b/.worker-builds/manifest.json
index 2864eb9..144cc30 100644
--- a/.worker-builds/manifest.json
+++ b/.worker-builds/manifest.json
@@ -1,8 +1,8 @@
 {
   "schema": 1,
   "built_for": "arcrun-tier2-worker-artifacts",
-  "generated_at": "2026-08-12T01:50:15.065Z",
-  "repo_head": "3eb8b31f2bfa029e15a8119e229082fbafb8d2b1",
+  "generated_at": "2026-08-12T04:21:48.581Z",
+  "repo_head": "b302c03ea8076bcfe82bbcebb1523dcec2d1e830",
   "repo_dirty": false,
   "workers": [
     {
@@ -58,11 +58,11 @@
     {
       "name": "arcrun-kbdb",
       "source_dir": "kbdb",
-      "source_commit": "3eb8b31f2bfa029e15a8119e229082fbafb8d2b1",
+      "source_commit": "c497ec418eba6cd94b1d5872671c51fd5812c11c",
       "main_module": "worker.mjs",
       "main_file": "arcrun-kbdb/worker.mjs",
-      "js_bytes": 149234,
-      "content_sha256": "7bc666568f453a2fc5fc9339fc997c12d3927fb8a293439f2c80695be8da9767",
+      "js_bytes": 149533,
+      "content_sha256": "ffb8d43467d0cefbd7545fdc0d347f2b965e3c3de20b3315eed7613f20266891",
       "modules": [],
       "compat_date": "2025-02-19",
       "compat_flags": [