revert: restore pre-upstream-merge baseline (tree of 3b673150b)

Roll the tree back to the pre-merge tip 3b673150b, undoing the upstream sync merge 72f4f186d (303 files) and the 13 post-merge commits layered on top of it.

Purpose: restore the last pre-sync baseline so the reported OMEMO/OTR encryption regressions can be reproduced against a known-good state and the upstream sync ruled in or out as the cause. Nothing is dropped from history; the merge and every post-merge commit remain reachable and can be cherry-picked back selectively.

Baseline:     3b673150b chore(chatlog): disable background message file logging (stage 1)

Undoes merge: 72f4f186d merge: sync upstream profanity-im/profanity

tests/unittests/test_cmd_sub.c

@@ -0,0 +1,53 @@
+#include "prof_cmocka.h"
+#include <stdlib.h>
+#include <string.h>
+#include <glib.h>
+
+#include "xmpp/xmpp.h"
+
+#include "ui/ui.h"
+#include "ui/stub_ui.h"
+
+#include "command/cmd_funcs.h"
+
+#define CMD_SUB "/sub"
+
+void
+cmd_sub_shows_message_when_not_connected(void** state)
+{
+    gchar* args[] = { NULL };
+
+    will_return(connection_get_status, JABBER_DISCONNECTED);
+
+    expect_cons_show("You are currently not connected.");
+
+    gboolean result = cmd_sub(NULL, CMD_SUB, args);
+    assert_true(result);
+}
+
+void
+cmd_sub_shows_usage_when_no_arg(void** state)
+{
+    gchar* args[] = { NULL };
+
+    will_return(connection_get_status, JABBER_CONNECTED);
+
+    expect_string(cons_bad_cmd_usage, cmd, CMD_SUB);
+
+    gboolean result = cmd_sub(NULL, CMD_SUB, args);
+    assert_true(result);
+}
+
+void
+test_cmd_sub_malformed_jid(void** state)
+{
+    ProfWin win;
+    win.type = WIN_CONSOLE;
+    gchar* args[] = { "request", "@example.com" };
+
+    will_return(connection_get_status, JABBER_CONNECTED);
+
+    expect_cons_show("Malformed JID: @example.com");
+    gboolean result = cmd_sub((ProfWin*)&win, CMD_SUB, args);
+    assert_true(result);
+}