fix(tui): support slash-separated fuzzy filter tokens

packages/tui/CHANGELOG.md

@@ -4,6 +4,7 @@
 
 ### Fixed
 
+- Fixed slash-separated fuzzy queries so provider/model completions remain matchable after insertion.
 - Fixed WezTerm inline Kitty image rendering so reserved row clears do not erase all but the top strip of tool image previews ([#5618](https://github.com/earendil-works/pi/issues/5618)).
 
 ## [0.79.1] - 2026-06-09

packages/tui/src/fuzzy.ts

@@ -94,7 +94,7 @@ export function fuzzyMatch(query: string, text: string): FuzzyMatch {
 
 /**
  * Filter and sort items by fuzzy match quality (best matches first).
- * Supports space-separated tokens: all tokens must match.
+ * Supports whitespace- and slash-separated tokens: all tokens must match.
  */
 export function fuzzyFilter<T>(items: T[], query: string, getText: (item: T) => string): T[] {
 	if (!query.trim()) {
@@ -103,7 +103,7 @@ export function fuzzyFilter<T>(items: T[], query: string, getText: (item: T) =>
 
 	const tokens = query
 		.trim()
-		.split(/\s+/)
+		.split(/[\s/]+/)
 		.filter((t) => t.length > 0);
 
 	if (tokens.length === 0) {

packages/tui/test/fuzzy.test.ts

@@ -102,4 +102,11 @@ describe("fuzzyFilter", () => {
 		assert.ok(result.map((r) => r.name).includes("foo"));
 		assert.ok(result.map((r) => r.name).includes("foobar"));
 	});
+
+	it("matches slash-separated provider/model queries against reordered text", () => {
+		const item = { id: "gpt-5.5", provider: "openai-codex" };
+		const result = fuzzyFilter([item], "openai-codex/gpt-5.5", (model) => `${model.id} ${model.provider}`);
+
+		assert.deepStrictEqual(result, [item]);
+	});
 });