fix(selfhost): correct stale gittensory_ metric names in .env.example

.env.example

@@ -403,8 +403,8 @@ REDIS_URL=redis://redis:6379                # REQUIRED for the self-host review
 #                                            #   host can reasonably go to 8-12 before the loops' own CPU work
 #                                            #   (JSON parsing, diff rendering, AI-response handling) starts
 #                                            #   competing for the cycles the I/O awaits were supposed to free up.
-#                                            #   Watch gittensory_queue_live_pending
-#                                            #   / gittensory_queue_oldest_live_pending_age_seconds after raising it;
+#                                            #   Watch loopover_queue_live_pending
+#                                            #   / loopover_queue_oldest_live_pending_age_seconds after raising it;
 #                                            #   if those stay high, the bottleneck is elsewhere (GitHub rate limit,
 #                                            #   AI latency, Postgres pool -- see PGPOOL_MAX above), not concurrency.
 # QUEUE_BACKGROUND_CONCURRENCY=1             # max low-priority/background jobs allowed to occupy QUEUE_CONCURRENCY slots

test/unit/env-example-metric-names.test.ts

@@ -0,0 +1,15 @@
+import { readFileSync } from "node:fs";
+import { join } from "node:path";
+import { describe, expect, it } from "vitest";
+
+describe(".env.example metric-name references (#5936)", () => {
+  it("references only the real loopover_ metric prefix, never the stale gittensory_ one, in queue tuning guidance", () => {
+    const env = readFileSync(join(process.cwd(), ".env.example"), "utf8");
+    // Prometheus metric names in this codebase are snake_case (src/selfhost/metrics.ts); a `gittensory_<word>`
+    // shape anywhere in this file is stale doc drift left over from the gittensory -> loopover rebrand -- the
+    // rebranded metric family only ever registers under the `loopover_` prefix.
+    expect(env).not.toMatch(/gittensory_[a-z_]+/);
+    expect(env).toContain("loopover_queue_live_pending");
+    expect(env).toContain("loopover_queue_oldest_live_pending_age_seconds");
+  });
+});