diff --git a/docs/agentic-dev-kit/workflows/session-start.md b/docs/agentic-dev-kit/workflows/session-start.md
index a89bf1b..a8bcd0e 100644
--- a/docs/agentic-dev-kit/workflows/session-start.md
+++ b/docs/agentic-dev-kit/workflows/session-start.md
@@ -167,7 +167,22 @@ something already classified 🟡 is later raised to 🔴, it gets the check the
 
   Search them **per candidate**, by job / ticket / subject name, using **your
   runtime's own file-search facility** — the subject passed as a *parameter*, the
-  two archives as the scope.
+  two archives as the scope. A parameter is never parsed as shell syntax, which is
+  what makes this the preferred route.
+
+  **If your runtime exposes no such tool, the deciding question is where the
+  subject came from**, not whether you are using a shell:
+
+  - **From your own repository or config** — a cron job name, a branch, a file
+    path, a scope. Operator-controlled, and an ordinary shell search is fine.
+  - **From your tracker or forge** — an issue title, a PR title. On any project
+    that accepts issues from outside, that is attacker-influenceable text, and
+    building a shell command around it is a problem three separate attempts here
+    failed to solve; see
+    [`#241`](https://github.com/topij/agentic-dev-kit/issues/241) before trying a
+    fourth. Prefer matching such a candidate by its **id** (`CUS-1107`, `#143`),
+    which is the part you control the shape of, and search the title only through
+    a parameter-passing tool.
 
   **Skip a candidate whose subject is empty or whitespace-only** rather than
   searching for it. An empty pattern matches every line of both archives, which is
diff --git a/kit-manifest.json b/kit-manifest.json
index a778faf..7e2fb6b 100644
--- a/kit-manifest.json
+++ b/kit-manifest.json
@@ -44,7 +44,7 @@
     },
     "docs/agentic-dev-kit/workflows/session-start.md": {
       "role": "workflow",
-      "sha256": "00cae6afe47b6817f92d012c6dcac4447a3e7114d403e7fae03891c35a01d3d6"
+      "sha256": "535a391e491d5371ba1b4930d75323a6ec9b46a636d0b89b59d239934e7aaf2c"
     },
     "docs/agentic-dev-kit/workflows/wrap-up.md": {
       "role": "workflow",