merge: sync upstream profanity-im/profanity

Sync with upstream profanity-im/profanity.

Major upstream changes incorporated:

Memory management
  - Replace malloc+memset with g_new0 throughout codebase
  - Adopt auto_gchar / auto_gcharv / auto_gerror / auto_jid cleanup macros
  - Replace free() with g_free() for GAlloc'd memory

Editor rewrite
  - Remove pthread-based async editor; use GChildWatch callback API
  - New launch_editor(initial_content, callback, user_data) interface
  - Proper signal handling (SIGINT, SIGTSTP, SIGPIPE reset in child)
  - ui_suspend()/ui_resume() integration for TTY management

OMEMO improvements
  - Dual backend support: libsignal-protocol-c and libomemo-c
  - Proper pre-key removal after use (XEP-0384 compliance)
  - Automatic pre-key regeneration when store drops below threshold
  - New functions: omemo_is_device_active(), omemo_is_jid_trusted()
  - omemo_get_jid_untrusted_fingerprints() for better error messages
  - Fingerprint notifications on new device identity discovery
  - Deterministic pre-key ID generation tracking max_pre_key_id
  - omemo_trust_changed() UI updates on trust state changes

JID validation
  - RFC 6122-compliant validation in jid_is_valid()
  - Character-level checks (RFC 6122 forbidden chars: & ' / : < > @)
  - Length limits: 1023 per component, 3071 total
  - New jid_is_valid_user_jid() for user vs. service JID distinction

Database
  - Schema migration v3: UNIQUE constraint on archive_id for deduplication
  - Triggers for corrected message tracking (replaces_db_id / replaced_by_db_id)
  - db_history_result_t return type, _truncate_datetime_suffix()

UI / console
  - win_warn_needed() / win_warn_sent() warning deduplication hash table
  - PAD_MIN_HEIGHT dynamic pad sizing with PAD_THRESHOLD auto-cleanup
  - Spellcheck integration in input field with Unicode word detection
  - cons_spellcheck_setting() for /settings ui output
  - /[command]? shortcut for command help

Account config
  - Account name sanitization for GKeyFile special chars ([ ] = # \n \r)
  - Replace popen() with g_spawn_sync() for eval_password
  - TLS policy: add "direct" option alongside legacy

Connection
  - Port validation with g_assert (0–65535)
  - SHA-256 certificate fingerprint support (XMPP_CERT_PUBKEY_FINGERPRINT_SHA256)
  - "direct" TLS policy alias for legacy SSL

Common utilities
  - str_xml_sanitize() for XML 1.0 illegal character removal
  - string_matches_one_of() with formatted error messages
  - valid_tls_policy_option() helper
  - prof_date_time_format_iso8601() utility
  - Improved strip_arg_quotes() with backslash unescaping
  - prof_occurrences() uses g_slist_prepend + reverse for performance

PGP / OX
  - Proper GPGME resource cleanup with goto-cleanup pattern
  - g_string_free(xmppuri) leak fix in _ox_key_lookup

CSV export
  - Use GString + g_file_set_contents instead of raw write() syscalls

Tests
  - Restructured into subdirectories: command/, config/, xmpp/, ui/, omemo/, otr/, pgp/
  - New test_cmd_ac.c for autocompleter unit tests
  - Updated stubs for new UI suspend/resume functions

License headers
  - Migrate to SPDX-3.0 identifiers (GPL-3.0-or-later WITH OpenSSL-exception)

────────────────────────────────────────────────────
cproof-specific preservations:

  - XEP-0308 LMC: replace_id ?: id logic in message/stanza/omemo
  - Force encryption: cmd_force_encryption, test_forced_encryption
  - CWE-134: format string protection (cons_show("%s", ...))
  - y_start_pos-based paging in window.c
  - db_history_result_t return type, _truncate_datetime_suffix()

Merge-time fixes:

  - common.c: format-security (-Werror) — cons_show(errmsg) → cons_show("%s", errmsg)
  - database.c: null-deref guard — !msg->timestamp → msg && !msg->timestamp
  - console.c: implicit size_t → int cast — (int)(maxlen + 1)
  - tlscerts.c: %d for size_t — %zu

Build system:
  - Kept autotools (Makefile.am, configure.ac); upstream uses Meson
  - Restored deleted files: bootstrap.sh, autogen.sh, ax_valgrind_check.m4, configure-debug
  - Updated Makefile.am test paths for subdirectory structure
  - Added test_cmd_ac, test_forced_encryption to test sources

Functional tests:
  - Use cproof version; upstream requires stbbr_for_xmlns from updated stabber
  - Not yet available in devs/stabber fork

Closes #64

Merge author: jabber.developer2
Commits authors:
 Michael Vetter <jubalh@iodoru.org>
& Steffen Jaeckel <s@jaeckel.eu>

tests/unittests/plugins/test_callbacks.c

@@ -0,0 +1,57 @@
+#include "prof_cmocka.h"
+#include <stdlib.h>
+#include <string.h>
+#include <glib.h>
+
+#include "plugins/callbacks.h"
+#include "plugins/plugins.h"
+
+void
+plugins_get_command_names__returns__no_commands(void** state)
+{
+    plugins_init();
+    GList* commands = plugins_get_command_names();
+
+    assert_true(commands == NULL);
+}
+
+void
+plugins_get_command_names__returns__commands_when_added(void** state)
+{
+    plugins_init();
+    PluginCommand* command1 = g_new0(PluginCommand, 1);
+    command1->command_name = g_strdup("command1");
+    callbacks_add_command("plugin1", command1);
+
+    PluginCommand* command2 = g_new0(PluginCommand, 1);
+    command2->command_name = g_strdup("command2");
+    callbacks_add_command("plugin1", command2);
+
+    PluginCommand* command3 = g_new0(PluginCommand, 1);
+    command3->command_name = g_strdup("command3");
+    callbacks_add_command("plugin2", command3);
+
+    GList* names = plugins_get_command_names();
+    assert_true(g_list_length(names) == 3);
+
+    gboolean foundCommand1 = FALSE;
+    gboolean foundCommand2 = FALSE;
+    gboolean foundCommand3 = FALSE;
+    GList* curr = names;
+    while (curr) {
+        if (g_strcmp0(curr->data, "command1") == 0) {
+            foundCommand1 = TRUE;
+        }
+        if (g_strcmp0(curr->data, "command2") == 0) {
+            foundCommand2 = TRUE;
+        }
+        if (g_strcmp0(curr->data, "command3") == 0) {
+            foundCommand3 = TRUE;
+        }
+        curr = g_list_next(curr);
+    }
+
+    assert_true(foundCommand1 && foundCommand2 && foundCommand3);
+
+    g_list_free(names);
+}

tests/unittests/plugins/test_callbacks.h

@@ -0,0 +1,7 @@
+#ifndef TESTS_TEST_CALLBACKS_H
+#define TESTS_TEST_CALLBACKS_H
+
+void plugins_get_command_names__returns__no_commands(void** state);
+void plugins_get_command_names__returns__commands_when_added(void** state);
+
+#endif

tests/unittests/plugins/test_plugins_disco.c

@@ -0,0 +1,128 @@
+#include "prof_cmocka.h"
+#include <stdlib.h>
+
+#include "plugins/disco.h"
+
+void
+disco_get_features__returns__empty_list_when_none(void** state)
+{
+    disco_close();
+    GList* features = disco_get_features();
+
+    assert_int_equal(g_list_length(features), 0);
+
+    g_list_free(features);
+    disco_close();
+}
+
+void
+disco_add_feature__updates__added_feature(void** state)
+{
+    disco_close();
+    disco_add_feature("my_plugin", "some:feature:example");
+
+    GList* features = disco_get_features();
+    assert_int_equal(g_list_length(features), 1);
+    char* feature = features->data;
+    assert_string_equal(feature, "some:feature:example");
+
+    g_list_free(features);
+    disco_close();
+}
+
+void
+disco_close__updates__resets_features(void** state)
+{
+    disco_close();
+    disco_add_feature("my_plugin", "some:feature:example");
+
+    GList* features = disco_get_features();
+    assert_int_equal(g_list_length(features), 1);
+    g_list_free(features);
+
+    disco_close();
+    features = disco_get_features();
+    assert_int_equal(g_list_length(features), 0);
+
+    g_list_free(features);
+    disco_close();
+}
+
+void
+disco_get_features__returns__all_added_features(void** state)
+{
+    disco_close();
+    disco_add_feature("first_plugin", "first:feature");
+    disco_add_feature("first_plugin", "second:feature");
+    disco_add_feature("second_plugin", "third:feature");
+    disco_add_feature("third_plugin", "fourth:feature");
+    disco_add_feature("third_plugin", "fifth:feature");
+
+    GList* features = disco_get_features();
+
+    assert_int_equal(g_list_length(features), 5);
+    assert_true(g_list_find_custom(features, "first:feature", (GCompareFunc)g_strcmp0));
+    assert_true(g_list_find_custom(features, "second:feature", (GCompareFunc)g_strcmp0));
+    assert_true(g_list_find_custom(features, "third:feature", (GCompareFunc)g_strcmp0));
+    assert_true(g_list_find_custom(features, "fourth:feature", (GCompareFunc)g_strcmp0));
+    assert_true(g_list_find_custom(features, "fifth:feature", (GCompareFunc)g_strcmp0));
+
+    g_list_free(features);
+    disco_close();
+}
+
+void
+disco_add_feature__updates__not_duplicate_feature(void** state)
+{
+    disco_close();
+    disco_add_feature("my_plugin", "my:feature");
+    disco_add_feature("some_other_plugin", "my:feature");
+
+    GList* features = disco_get_features();
+    assert_int_equal(g_list_length(features), 1);
+
+    g_list_free(features);
+    disco_close();
+}
+
+void
+disco_remove_features__updates__removes_plugin_features(void** state)
+{
+    disco_close();
+    disco_add_feature("plugin1", "plugin1:feature1");
+    disco_add_feature("plugin1", "plugin1:feature2");
+    disco_add_feature("plugin2", "plugin2:feature1");
+
+    GList* features = disco_get_features();
+    assert_int_equal(g_list_length(features), 3);
+    g_list_free(features);
+
+    disco_remove_features("plugin1");
+
+    features = disco_get_features();
+    assert_int_equal(g_list_length(features), 1);
+
+    g_list_free(features);
+    disco_close();
+}
+
+void
+disco_remove_features__updates__not_remove_when_more_than_one_reference(void** state)
+{
+    disco_close();
+    disco_add_feature("plugin1", "feature1");
+    disco_add_feature("plugin1", "feature2");
+    disco_add_feature("plugin2", "feature1");
+
+    GList* features = disco_get_features();
+    assert_int_equal(g_list_length(features), 2);
+    g_list_free(features);
+
+    disco_remove_features("plugin1");
+
+    features = disco_get_features();
+    assert_int_equal(g_list_length(features), 1);
+
+    g_list_free(features);
+    disco_close();
+}

tests/unittests/plugins/test_plugins_disco.h

@@ -0,0 +1,12 @@
+#ifndef TESTS_TEST_PLUGINS_DISCO_H
+#define TESTS_TEST_PLUGINS_DISCO_H
+
+void disco_get_features__returns__empty_list_when_none(void** state);
+void disco_add_feature__updates__added_feature(void** state);
+void disco_close__updates__resets_features(void** state);
+void disco_get_features__returns__all_added_features(void** state);
+void disco_add_feature__updates__not_duplicate_feature(void** state);
+void disco_remove_features__updates__removes_plugin_features(void** state);
+void disco_remove_features__updates__not_remove_when_more_than_one_reference(void** state);
+
+#endif