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>

.github/ISSUE_TEMPLATE/bug_report.md

@@ -1,44 +0,0 @@
----
-name: Bug report
-about: Create a report
-title: ''
-labels: bug
-assignees: ''
-
----
-
-<!--- Provide a general summary of the issue in the Title above -->
-
-<!--- More than 50 issues open? Please don't file any new feature requests -->
-<!--- Help us reduce the work first :-) -->
-
-## Expected Behavior
-<!--- If you're describing a bug, tell us what should happen -->
-<!--- If you're suggesting a change/improvement, tell us how it should work -->
-
-## Current Behavior
-<!--- If describing a bug, tell us what happens instead of the expected behavior -->
-<!--- If suggesting a change/improvement, explain the difference from current behavior -->
-
-## Possible Solution
-<!--- Not obligatory, but suggest a fix/reason for the bug, -->
-<!--- or ideas how to implement the addition or change -->
-
-## Steps to Reproduce (for bugs)
-<!--- Describe, in detail, what needs to happen to reproduce this bug -->
-<!--- Give us a screenshot (if it's helpful for this particular bug) -->
-1.
-2.
-3.
-4.
-
-## Context
-<!--- How has this issue affected you? What are you trying to accomplish? -->
-
-## Environment
-* Give us the version and build information output generated by `profanity -v`
-* If you could not yet build profanity, mention the revision you try to build from
-* Operating System/Distribution
-* glib version
-* libstrophe version
-* Some bugs might be due to specific implementation in the server. `/serversoftware example.domain` can be helpful

.github/ISSUE_TEMPLATE/feature_request.md

@@ -0,0 +1,20 @@
+---
+name: Feature request
+about: Suggest an idea for this project
+title: ''
+labels: feature
+assignees: ''
+
+---
+
+**Is your feature request related to a problem? Please describe.**
+A clear and concise description of what the problem is. Ex. I'm always frustrated when [...]
+
+**Describe the solution you'd like**
+A clear and concise description of what you want to happen.
+
+**Describe alternatives you've considered**
+A clear and concise description of any alternative solutions or features you've considered.
+
+**Additional context**
+Add any other context or screenshots about the feature request here.

.github/issue_template.md

@@ -1,3 +1,12 @@
+---
+name: Bug report
+about: Create a report
+title: ''
+labels: bug
+assignees: ''
+
+---
+
 <!--- Provide a general summary of the issue in the Title above -->
 
 <!--- More than 50 issues open? Please don't file any new feature requests -->
@@ -31,4 +40,3 @@
 * glib version
 * libstrophe version
 * Some bugs might be due to specific implementation in the server. `/serversoftware example.domain` can be helpful
-

.github/workflows/ci-code.yml

@@ -30,7 +30,7 @@ jobs:
     steps:
       - uses: actions/checkout@v4
       - name: Build
-        run: docker build -f Dockerfile.${{ matrix.flavor }} -t profanity .
+        run: docker build -f ci/Dockerfile.${{ matrix.flavor }} -t profanity .
       - name: Run tests
         run: docker run profanity ./ci-build.sh
 
@@ -45,10 +45,10 @@ jobs:
       # if this check fails, you have to update the number of auto types known and the list of auto types in the check below
       - name: Check auto types are up-to-date
         run: |
-          [[ "$(find src -type f -name '*.[ch]' -exec awk '/^#define auto_[\W]*/ {print $2}' '{}' \; | sort -u | wc -l)" == "8" ]] || exit -1
+          [[ "$(find src -type f -name '*.[ch]' -exec awk '/^#define auto_[\W]*/ {print $2}' '{}' \; | sort -u | wc -l)" == "9" ]] || exit -1
       - name: Check auto types are initialized
         run: |
-          grep -P 'auto_(char|gchar|gcharv|guchar|jid|sqlite|gfd|FILE)[\w *]*;$' -r src && exit -1 || true
+          grep -P 'auto_(char|gchar|gcharv|guchar|gerror|jid|sqlite|gfd|FILE)[\w *]*;$' -r src && exit -1 || true
 
       - name: Check CWE-134 format string vulnerabilities
         run: ./check-cwe134.sh
@@ -108,6 +108,6 @@ jobs:
     steps:
       - uses: actions/checkout@v4
       - name: Build
-        run: docker build -f Dockerfile.arch -t profanity-cov .
+        run: docker build -f ci/Dockerfile.arch -t profanity-cov .
       - name: Run coverage
         run: docker run profanity-cov ./ci-build.sh --coverage-only