ui: round 6 — Enter submits from anywhere; model dashes ACTUALLY kept; dumbbell right

- ENTER SUBMITS REGARDLESS OF FOCUS (owner): dictation means the dock
  fields are rarely focused. New useEnterSubmits hook — a window-level
  listener inside both docks (mounted only while a problem/question is
  active). Plain Enter anywhere outside a typing surface submits the
  practice thinking / the teaching answer; typing surfaces keep their
  own handlers, buttons keep their click-activation (the collapsed
  Problem bar still expands on Enter), modified Enters untouched.
  Teaching sessions get the same law as practice — one standard.
- MODEL DASHES: the round-5 join("-") edit never landed (the batch
  script aborted on an earlier assert before reaching it) — the source
  still joined with spaces while the commit message claimed otherwise.
  Now actually joined with dashes: 'glm-5.3-flash' everywhere (picker,
  setup dialog, stats bar); pins updated to match.
- SIDEBAR: the practice dumbbell moves to the far right of the session
  row — titles sit flush with teaching rows, cleaner list.

tests/render-settings.test.tsx

@@ -155,7 +155,7 @@ describe("AgentSection (thin SSR)", () => {
 		);
 		// The trigger shows the stored id even with no catalog loaded (a
 		// trigger reading "Default" over a live override would lie).
-		assert.ok(html.includes("glm 4.7 flash"), "the override id is visible (prettyModel form, no auto-caps)");
+		assert.ok(html.includes("glm-4.7-flash"), "the override id is visible (prettyModel form, no auto-caps)");
 		assert.ok(tagOf(html, "toggle-tool-demo").includes('aria-checked="false"'), "demo off");
 		assert.ok(tagOf(html, "toggle-tool-visual").includes('aria-checked="true"'), "visual still on");
 	});

tests/render-stats-bar.test.tsx

@@ -77,20 +77,20 @@ describe("stats bar", () => {
 		assert.match(html, /data-testid="stats-context">11k</);
 	});
 
-	it("prettyModel strips vendor + date suffix (no auto-caps)", () => {
-		assert.equal(prettyModel("z-ai/glm-5.3-flash"), "glm 5.3 flash"); // no auto-caps (owner round 4)
-		assert.equal(prettyModel("qwen/qwen3.8-max-0902"), "qwen3.8 max");
+	it("prettyModel strips vendor + date suffix, keeps dashes", () => {
+		assert.equal(prettyModel("z-ai/glm-5.3-flash"), "glm-5.3-flash"); // dashes kept (owner round 5)
+		assert.equal(prettyModel("qwen/qwen3.8-max-0902"), "qwen3.8-max");
 	});
 
 	it("provider-qualified stamps (usage contract, model-slots wave)", () => {
 		// qualified: the provider rides as a quiet suffix — federation makes
 		// the same model via two providers different bookkeeping
-		assert.equal(prettyModel("openrouter:z-ai/glm-5.3-flash", true), "glm 5.3 flash · openrouter");
-		assert.equal(prettyModel("openai:gpt-5.2", true), "gpt 5.2 · openai");
+		assert.equal(prettyModel("openrouter:z-ai/glm-5.3-flash", true), "glm-5.3-flash · openrouter");
+		assert.equal(prettyModel("openai:gpt-5.2", true), "gpt-5.2 · openai");
 		// unqualified on a qualified stamp: provider silently dropped (old shape)
-		assert.equal(prettyModel("openrouter:z-ai/glm-5.3-flash"), "glm 5.3 flash");
+		assert.equal(prettyModel("openrouter:z-ai/glm-5.3-flash"), "glm-5.3-flash");
 		// qualified on a bare id: no suffix invented
-		assert.equal(prettyModel("z-ai/glm-5.3-flash", true), "glm 5.3 flash");
+		assert.equal(prettyModel("z-ai/glm-5.3-flash", true), "glm-5.3-flash");
 	});
 });