docs(coderd): document silent-empty behavior for zero-lexeme chat search

Append to the search: swagger clause that a value tokenizing to no searchable words returns an empty list, so API consumers are not surprised by the 200-with-empty-results behavior (CRF-51).
DanielleMaywood · Aug 12, 2026 · Jul 21, 2026 · Aug 10, 2026 · Aug 10, 2026 · Aug 10, 2026
commit 1fcef680ede978fc533da064a3510d73f126d89e
diff --git a/coderd/apidoc/docs.go b/coderd/apidoc/docs.go
diff --git a/coderd/apidoc/swagger.json b/coderd/apidoc/swagger.json
diff --git a/coderd/exp_chats.go b/coderd/exp_chats.go
@@ -357,7 +357,7 @@ func (api *API) chatsByWorkspace(rw http.ResponseWriter, r *http.Request) {
 // @Security CoderSessionToken
 // @Tags Chats
 // @Produce json
-// @Param q query string false "Search query. Supports `title:<substring>` (case-insensitive, quote multi-word values), `archived:bool`, `has_unread:bool`, `pr_status:<draft\|open\|merged\|closed>` as repeated or comma-separated values, `source:<created_by_me\|shared_with_me>`, `diff_url:<url>` (quote values containing colons), `pr:<number>` (exact PR number match), `repo:<owner/repo>` (case-insensitive substring match against git remote origin or URL), `pr_title:<text>` (case-insensitive PR title substring), `search:<text>` (full-text search across chat titles, PR titles, PR numbers, and message bodies; quote multi-word values; cannot be combined with title, pr_title, or pr). Bare terms are not supported; use `title:<value>` or `search:<value>`."
+// @Param q query string false "Search query. Supports `title:<substring>` (case-insensitive, quote multi-word values), `archived:bool`, `has_unread:bool`, `pr_status:<draft\|open\|merged\|closed>` as repeated or comma-separated values, `source:<created_by_me\|shared_with_me>`, `diff_url:<url>` (quote values containing colons), `pr:<number>` (exact PR number match), `repo:<owner/repo>` (case-insensitive substring match against git remote origin or URL), `pr_title:<text>` (case-insensitive PR title substring), `search:<text>` (full-text search across chat titles, PR titles, PR numbers, and message bodies; quote multi-word values; cannot be combined with title, pr_title, or pr; a value that tokenizes to no searchable words returns an empty list). Bare terms are not supported; use `title:<value>` or `search:<value>`."
 // @Param label query string false "Filter by label as key:value. Repeat for multiple (AND logic)."
 // @Success 200 {array} codersdk.Chat
 // @Router /api/experimental/chats [get]