feat(omo-codex): rework skill set around ulw-loop and planner agents

Rename ultragoal skill to ulw-loop with a CLI bootstrap fallback and
openai.yaml hint metadata, while keeping ultragoal as a discoverable
alias. Drop the metis and momus skills in favor of bundled ultrawork
planner agents and rewrite the planing-prometheustic skill. Update
aggregate and sync-skills tests to match.

packages/omo-codex/plugin/test/sync-skills.test.mjs

@@ -13,8 +13,6 @@ const expectedSkills = [
 	"frontend-ui-ux",
 	"init-deep",
 	"lsp",
-	"metis",
-	"momus",
 	"planing-prometheustic",
 	"programming",
 	"refactor",
@@ -43,6 +41,35 @@ test("#given synced aggregate Codex skills #when inspected #then component and s
 	}
 });
 
+test("#given synced ultragoal skill #when Codex hint metadata is inspected #then ulw-loop surfaces the ultragoal alias", async () => {
+	// given
+	const skillRoot = join(root, "skills", "ultragoal");
+
+	// when
+	const skill = await readFile(join(skillRoot, "SKILL.md"), "utf8");
+	const interfaceMetadata = await readFile(join(skillRoot, "agents", "openai.yaml"), "utf8");
+
+	// then
+	assert.match(skill, /^---\nname: ulw-loop\n/m);
+	assert.match(skill, /Goal-like loop that uses ultrawork mode to decompose work into systematic, evidence-bound steps\./);
+	assert.match(interfaceMetadata, /display_name: "ulw loop"/);
+	assert.doesNotMatch(interfaceMetadata, /ulw-loop \/ ultragoal/);
+	assert.match(interfaceMetadata, /short_description: "Goal-like ultrawork loop for systematic decomposition"/);
+	assert.match(interfaceMetadata, /default_prompt: "Use \$ulw-loop/);
+});
+
+test("#given synced ultragoal skill #when Codex hint metadata is inspected #then ultragoal remains discoverable as an alias", async () => {
+	// given
+	const skillRoot = join(root, "skills", "ultragoal");
+
+	// when
+	const interfaceMetadata = await readFile(join(skillRoot, "agents", "openai.yaml"), "utf8");
+
+	// then
+	assert.match(interfaceMetadata, /search_terms:/);
+	assert.match(interfaceMetadata, /- "ultragoal"/);
+});
+
 test("#given synced aggregate Codex skills #when they contain OpenCode orchestration examples #then Codex tool compatibility guidance is injected", async () => {
 	// given
 	const skillsRoot = join(root, "skills");