v0.46.0: security, Docker UID/GID, model discovery, i18n, cancel fix

* fix: decode HTML entities before markdown processing + zh/zh-Hant translations (#239)

Adds decode() helper in renderMd() to fix double-escaping of HTML entities
from LLM output (e.g. <code> becoming <code> instead
of rendering). XSS-safe: decode runs before esc(), only 5 entity patterns.

Also adds 40+ missing zh (Simplified Chinese) translation keys and a new
zh-Hant (Traditional Chinese) locale with 163 keys.

Fix applied: removed duplicate settings_label_notifications key in both
zh and zh-Hant locales.

Fixes #240

* fix: restore custom model list discovery with config api key (#238)

get_available_models() now reads api_key from config.yaml before env vars:
  1. model.api_key
  2. providers.<active>.api_key / providers.custom.api_key
  3. env var fallbacks (HERMES_API_KEY, OPENAI_API_KEY, etc.)

Also adds OpenAI/Python User-Agent header and a regression test covering
authenticated /v1/models discovery.

Fixes users with LM Studio / Ollama custom endpoints configured in
config.yaml whose model picker silently collapsed to the default model.

* feat: Docker UID/GID matching to avoid root-owned .hermes files (#237)

Adds docker_init.bash with hermeswebuitoo/hermeswebui user pattern so
container files match the host user UID/GID. Prevents .hermes volume
mounts from being owned by root when using a non-root host user.

Configure via WANTED_UID and WANTED_GID env vars (default 1000/1000).
Readme updated with setup instructions.

Fix applied: removed duplicate WANTED_GID=1000 line in docker-compose.yml
that was overriding the ${GID:-1000} variable expansion.

* security: redact credentials from API responses and fix credential file permissions (#243)

Adds response-layer credential redaction to three endpoints:
  - GET /api/session — messages[], tool_calls[], and title
  - GET /api/session/export — download also redacted
  - SSE done event — session payload in stream
  - GET /api/memory — MEMORY.md and USER.md content

Adds api/startup.py with fix_credential_permissions() at server startup.
Adds 13 tests in tests/test_security_redaction.py.

Merged with #237 container detection changes in server.py.

* fix: cancel button now interrupts agent and cleans up UI state (#244)

Wires agent.interrupt() into cancel_stream() so the backend actually
stops tool execution when the user clicks Cancel, rather than only
stopping the SSE stream while the agent keeps running.

Changes:
  - api/config.py: adds AGENT_INSTANCES dict (stream_id -> AIAgent)
  - api/streaming.py: stores agent in AGENT_INSTANCES after creation,
    checks CANCEL_FLAGS immediately after store (race condition fix),
    calls agent.interrupt() in cancel_stream(), cleans up in finally block
  - static/boot.js: removes stale setStatus(cancelling) call
  - static/messages.js: setBusy(false)/setStatus('') unconditionally on cancel

Race condition fix: after storing agent in AGENT_INSTANCES, immediately
checks if CANCEL_FLAGS[stream_id] is already set (cancel arrived during
agent init) and interrupts before starting. Check is inside the same
STREAMS_LOCK acquisition, making it atomic.

New test file: tests/test_cancel_interrupt.py with 6 unit tests.

* docs: v0.46.0 release notes, bump version, update test counts

---------

Co-authored-by: Nathan Esquenazi <nesquena@gmail.com>

tests/test_model_resolver.py

@@ -326,3 +326,55 @@ def test_default_model_lands_under_active_provider_group(monkeypatch):
     assert 'gpt-5.4' not in groups.get('Anthropic', []), (
         f"gpt-5.4 leaked into Anthropic group via fallback: {groups.get('Anthropic')}"
     )
+
+
+def test_custom_endpoint_uses_model_config_api_key_for_model_discovery(monkeypatch):
+    """Custom endpoint model discovery must use model.api_key from config.yaml,
+    not only environment variables, otherwise the dropdown collapses to the
+    default model when /v1/models requires auth."""
+    import json as _json
+    import api.config as _cfg
+
+    old_cfg = dict(_cfg.cfg)
+    _cfg.cfg['model'] = {
+        'provider': 'custom',
+        'default': 'gpt-5.4',
+        'base_url': 'https://example.test/v1',
+        'api_key': 'sk-test-model-key',
+    }
+    _cfg.cfg.pop('providers', None)
+
+    captured = {}
+
+    class _Resp:
+        def read(self):
+            return _json.dumps({'data': [{'id': 'gpt-5.2', 'name': 'GPT-5.2'}]}).encode('utf-8')
+        def __enter__(self):
+            return self
+        def __exit__(self, exc_type, exc, tb):
+            return False
+
+    def _fake_urlopen(req, timeout=10):
+        captured['auth'] = req.get_header('Authorization')
+        captured['ua'] = req.get_header('User-agent')
+        return _Resp()
+
+    monkeypatch.setattr('urllib.request.urlopen', _fake_urlopen)
+    monkeypatch.setattr('socket.getaddrinfo', lambda *a, **k: [])
+    monkeypatch.delenv('OPENAI_API_KEY', raising=False)
+    monkeypatch.delenv('HERMES_API_KEY', raising=False)
+    monkeypatch.delenv('HERMES_OPENAI_API_KEY', raising=False)
+    monkeypatch.delenv('LOCAL_API_KEY', raising=False)
+    monkeypatch.delenv('OPENROUTER_API_KEY', raising=False)
+    monkeypatch.delenv('API_KEY', raising=False)
+    try:
+        result = _cfg.get_available_models()
+    finally:
+        _cfg.cfg.clear()
+        _cfg.cfg.update(old_cfg)
+
+    assert captured['auth'] == 'Bearer sk-test-model-key'
+    assert captured['ua'] == 'OpenAI/Python 1.0'
+    groups = {g['provider']: [m['id'] for m in g['models']] for g in result['groups']}
+    assert 'Custom' in groups
+    assert 'gpt-5.2' in groups['Custom']