Remove last literal mentions of the old project name (AI)

cache.js's comment explaining the DB_NAME prefix change referenced
the old "cmjs-" prefix literally as a historical note. Reworded to
describe the effect generically instead, so no trace of the former
project name remains anywhere in the repo.

Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>

js/cache.js

@@ -12,13 +12,11 @@
 // each file's mtime happens to change — which, on a "deploy and forget"
 // site, could be years.
 const CACHE_SCHEMA_VERSION = 3;
-// The `cmjs-` -> `cmkiss-` prefix change (project rename) already has the
-// same effect as a version bump would — every existing visitor's browser
-// opens a fresh, empty database under the new name, and the old
-// `cmjs-cache-v3` one is left behind as orphaned storage (harmless; this
-// module degrades to live-fetch behaviour whenever the cache is empty or
-// unavailable). Deliberate, one-time, not something to repeat — don't bump
-// CACHE_SCHEMA_VERSION for this same reason again.
+// Renaming this prefix has the same effect as a version bump would — every
+// existing visitor's browser opens a fresh, empty database under the new
+// name, and the previous one is left behind as orphaned storage (harmless;
+// this module degrades to live-fetch behaviour whenever the cache is empty
+// or unavailable). Do this deliberately, not casually.
 const DB_NAME = `cmkiss-cache-v${CACHE_SCHEMA_VERSION}`;
 const STORE_NAME = 'articleFiles';