Merge upstream/master into merge/upstream-full

Merge profanity-im/profanity master (373 commits) into cproof fork.

Source changes (manual merge):
- src/command/: cmd_defs, cmd_funcs, cmd_ac — upstream g_new0, auto_gchar,
  launch_editor callback; keep our XEP-0308 LMC, force-encryption, CWE-134
- src/config/: preferences, tlscerts, account — upstream UNIQUE dedup,
  dynamic pad capacity; keep our db_history_result_t, scroll logic
- src/database.*: upstream g_new0 memory mgmt; keep our return types,
  add null-check fix for msg->timestamp
- src/omemo/, src/pgp/: upstream _gpgme_key_get_email, g_new0;
  keep our replace_id in omemo_on_message_send
- src/tools/: editor, http_upload, bookmark_ignore — upstream launch_editor
  callback API
- src/ui/: console, window, chatwin, mucwin, inputwin, buffer —
  upstream win_warn_needed/sent dedup, PAD_MIN_HEIGHT dynamic pads;
  keep our y_start_pos scroll, _truncate_datetime_suffix
- src/xmpp/: message, stanza, presence, roster_list, iq, session —
  upstream connection_get_available_resources; keep our LMC stanza logic
- src/common.c: fix format-security (cons_show)

Build system:
- Makefile.am: updated test paths to subdirectory structure, added
  test_cmd_ac, test_forced_encryption
- Restored autotools files deleted by upstream meson migration:
  bootstrap.sh, autogen.sh, m4/ax_valgrind_check.m4, configure-debug

Tests:
- Unit tests: upstream unittests.c base + our forced_encryption tests
  (482 passed, 0 failed across all 4 configurations)
- Functional tests: kept our version (93 passed, 0 failed)
  upstream version requires stbbr_for_xmlns not yet in our stabber fork
- Updated test stubs: stub_xmpp.c, stub_omemo.c from upstream

Compile fixes:
- src/common.c: cons_show(errmsg) -> cons_show("%s", errmsg)
- src/database.c: null-check before msg->timestamp access
- src/ui/console.c: size_t -> (int) cast for format width
- src/config/tlscerts.c: %d -> %zu for size_t

src/log.c

@@ -3,35 +3,9 @@
  * vim: expandtab:ts=4:sts=4:sw=4
  *
  * Copyright (C) 2012 - 2019 James Booth <boothj5@gmail.com>
- * Copyright (C) 2018 - 2025 Michael Vetter <jubalh@iodoru.org>
- *
- * This file is part of Profanity.
- *
- * Profanity is free software: you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation, either version 3 of the License, or
- * (at your option) any later version.
- *
- * Profanity is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with Profanity.  If not, see <https://www.gnu.org/licenses/>.
- *
- * In addition, as a special exception, the copyright holders give permission to
- * link the code of portions of this program with the OpenSSL library under
- * certain conditions as described in each individual source file, and
- * distribute linked combinations including the two.
- *
- * You must obey the GNU General Public License in all respects for all of the
- * code used other than OpenSSL. If you modify file(s) with this exception, you
- * may extend this exception to your version of the file(s), but you are not
- * obligated to do so. If you do not wish to do so, delete this exception
- * statement from your version. If you delete this exception statement from all
- * source files in the program, then also delete it here.
+ * Copyright (C) 2018 - 2026 Michael Vetter <jubalh@iodoru.org>
  *
+ * SPDX-License-Identifier: GPL-3.0-or-later WITH OpenSSL-exception
  */
 
 #include "config.h"
@@ -60,6 +34,7 @@ static FILE* logp;
 static gchar* mainlogfile = NULL;
 static gboolean user_provided_log = FALSE;
 static log_level_t level_filter;
+static pid_t prof_pid;
 
 static int stderr_inited;
 static log_level_t stderr_level;
@@ -75,6 +50,8 @@ enum {
 static void
 _rotate_log_file(void)
 {
+    if (!mainlogfile)
+        return;
     auto_gchar gchar* log_file = g_strdup(mainlogfile);
     size_t len = strlen(log_file);
     auto_gchar gchar* log_file_new = malloc(len + 5);
@@ -198,6 +175,8 @@ log_init(log_level_t filter, const char* const log_file)
 
     logp = fopen(mainlogfile, "a");
     g_chmod(mainlogfile, S_IRUSR | S_IWUSR);
+
+    prof_pid = getpid();
 }
 
 const gchar*
@@ -225,14 +204,11 @@ log_close(void)
 static void
 _log_msg(log_level_t level, const char* const area, const char* const msg)
 {
-    GDateTime* dt = g_date_time_new_now_local();
-
     char* level_str = _log_abbreviation_string_from_level(level);
 
-    auto_gchar gchar* date_fmt = g_date_time_format_iso8601(dt);
+    auto_gchar gchar* date_fmt = prof_date_time_format_iso8601(NULL);
 
-    fprintf(logp, "%s: %s: %s: %s\n", date_fmt, area, level_str, msg);
-    g_date_time_unref(dt);
+    fprintf(logp, "%s: %08d: %s: %s: %s\n", date_fmt, prof_pid, area, level_str, msg);
 
     fflush(logp);
 
@@ -359,11 +335,6 @@ log_stderr_init(log_level_t level)
     if (rc != 0)
         goto err;
 
-    close(STDERR_FILENO);
-    rc = dup2(stderr_pipe[1], STDERR_FILENO);
-    if (rc < 0)
-        goto err_close;
-
     rc = log_stderr_nonblock_set(stderr_pipe[0])
              ?: log_stderr_nonblock_set(stderr_pipe[1]);
     if (rc != 0)
@@ -371,15 +342,21 @@ log_stderr_init(log_level_t level)
 
     stderr_buf = malloc(STDERR_BUFSIZE);
     stderr_msg = g_string_sized_new(STDERR_BUFSIZE);
-    stderr_level = level;
-    stderr_inited = 1;
-
-    prof_add_shutdown_routine(_log_stderr_close);
 
     if (stderr_buf == NULL || stderr_msg == NULL) {
         errno = ENOMEM;
         goto err_free;
     }
+
+    int dup_fd = dup2(stderr_pipe[1], STDERR_FILENO);
+    if (dup_fd < 0)
+        goto err_free;
+    close(dup_fd);
+
+    stderr_level = level;
+    stderr_inited = 1;
+
+    prof_add_shutdown_routine(_log_stderr_close);
     return;
 
 err_free: