refactor(omo-codex): rename ultragoal component to ulw-loop

Fully rename the ultragoal component to ulw-loop so the identifier
matches the ulw-loop skill it powers. Renames the component directory,
nested skill, TS identifiers (UlwLoop / ULW_LOOP_* / ulwLoop*), the
omo ulw-loop CLI subcommand, the .omo/ulw-loop state directory, the
OMO_ULW_LOOP_STEER directive token, and the @code-yeongyu/codex-ulw-loop
package. Also threads Atlas-style right-sized parallel worker delegation
and a Prometheus-style QA + maximum-parallelism plan into the ulw-loop
skill, with a critical post-subagent QA gate.

Updates aggregate wiring (plugin package components, hooks.json,
sync-skills), the install-codex agent-link test fixture, and user docs.

packages/omo-codex/plugin/components/ulw-loop/test/fixtures/sample-quality-gate.json

@@ -0,0 +1,18 @@
+{
+	"aiSlopCleaner": { "status": "passed", "evidence": "no slop detected after cleaner run" },
+	"verification": {
+		"status": "passed",
+		"commands": ["npm test", "npm run build"],
+		"evidence": "all tests pass + build green"
+	},
+	"codeReview": {
+		"recommendation": "APPROVE",
+		"architectStatus": "CLEAR",
+		"evidence": "review synthesis: ship it"
+	},
+	"criteriaCoverage": {
+		"totalCriteria": 9,
+		"passCount": 9,
+		"adversarialClassesCovered": ["malformed_input", "prompt_injection", "stale_state"]
+	}
+}