Merge remote-tracking branch 'origin/master' into fix/webui-bugfix-sweep

# Conflicts: # CHANGELOG.md
2026-05-28 13:56:00 -04:00
commit cf6e3111c4
@@ -10,6 +10,28 @@
 - Added missing i18n keys used by command, cron, provider, search/default, and session-rename UI paths across supported locales so missing translations fall back to labels instead of raw key names.
 - Made workspace Git tests pin their temporary repository branch to `master` so the suite is independent of the host Git default-branch setting.

+## [v0.51.153] — 2026-05-28 — Release DY (stage-batch35 — 11-PR low-risk cleanup: title-language + clarify SSE + upload filename + discoverability + SSE reconnect + gateway image + docker docs)
+
+### Changed
+
+- Local fallback title generation no longer has a German-only `Session Bilder` special case; it now uses the same generic topic extraction path as other fallback titles. (Refs #3040)
+- Title-generation prompts now use the same language-neutral "match the user language" instruction for every locale instead of adding German-only exemplars. (Refs #3040)
+- Session discoverability audit findings for stale persisted WebUI-as-CLI flags now report whether an API-visible lineage representative already covers the hidden snapshot, including the representative session id in JSON and Markdown output.
+
+### Fixed
+
+- Title-language detection no longer treats common English tech/jargon text such as "session die" or DAS/DER references as German just because of shared tokens. (Refs #3040)
+- Clarify prompt SSE fallback polling now preserves its owner session id, matching approval polling behavior so terminal events from another session cannot stop the active clarify fallback poller.
+- Duplicate chat uploads now report the actual stored filename in `/api/upload` responses, so suffixed files such as `photo-1.png` do not appear under the original basename in WebUI attachment metadata.
+- Visible but unfocused chat windows now still attempt the immediate SSE reconnect for the current session; only a real session switch skips the reconnect path. (Refs #3040)
+- Gateway-backed WebUI chat now forwards current-turn image attachments as OpenAI-style multimodal `image_url` parts when native image input is enabled, matching the legacy WebUI runtime's image handoff.
+- New chat sessions reset `_messagesTruncated` / `_oldestIdx` so a fresh conversation never displays the stale "Scroll up or click to load older messages" indicator inherited from a previously-paginated session.
+- `openai-codex` reasoning-effort resolution now lets the existing `models.dev` metadata pass set the supported levels (including `xhigh`) instead of being silently clipped through the Copilot model heuristic.
+
+### Documentation
+
+- Clarify two Docker onboarding traps: `sudo docker compose` can mount `/root/.hermes` instead of the user's Hermes home on Linux, and Linux Docker Engine users should use a `host-gateway` alias such as `api.local` for host-local model servers instead of configuring `localhost` inside the container. (#3006, #3012)
+
 ## [v0.51.152] — 2026-05-28 — Release DX (stage-batch34 — single-PR optional gateway-backed browser chat)

 ### Added
@@ -2202,10 +2202,6 @@ def resolve_model_reasoning_efforts(
        if provider in {"copilot", "github-copilot"}:
            return github_model_reasoning_efforts(hinted_model)

-        if provider == "openai-codex":
-            bare = hinted_model.rsplit("/", 1)[-1]
-            return github_model_reasoning_efforts(bare)
-
        if provider == "lmstudio":
            probe_base = resolved_base_url or _get_provider_base_url(provider)
            opts = lmstudio_model_reasoning_options(hinted_model, probe_base)
@@ -202,10 +202,19 @@ def _run_gateway_chat_streaming(
            # Scope Gateway long-term continuity to this WebUI conversation
            # without exposing the browser's auth cookie or CSRF material.
            headers["X-Hermes-Session-Key"] = f"webui:{session_id}"
+        message_content: Any = str(msg_text or "")
+        if attachments:
+            try:
+                from api.streaming import _build_native_multimodal_message
+
+                message_content = _build_native_multimodal_message("", str(msg_text or ""), attachments, str(workspace), cfg=cfg)
+            except Exception:
+                logger.debug("Failed to build gateway multimodal attachment payload", exc_info=True)
+                message_content = str(msg_text or "")
        body = {
            "model": model or "default",
            "stream": True,
-            "messages": [{"role": "user", "content": str(msg_text or "")}],
+            "messages": [{"role": "user", "content": message_content}],
        }
        if model_provider:
            body["provider"] = model_provider
@@ -252,15 +252,19 @@ def audit_session_discoverability(
        parent = _merged_field(sid, stores, "parent_session_id")
        parent_by_id[sid] = str(parent) if parent else None
    api_lineage_ids: set[str] = set()
+    api_lineage_representative_by_id: dict[str, str] = {}
    for sid, row in api.items():
        explicit_root = row.get("_lineage_root_id")
        if explicit_root:
-            api_lineage_ids.add(str(explicit_root))
+            root_id = str(explicit_root)
+            api_lineage_ids.add(root_id)
+            api_lineage_representative_by_id.setdefault(root_id, sid)
        current = sid
        seen: set[str] = set()
        while current and current not in seen:
            seen.add(current)
            api_lineage_ids.add(current)
+            api_lineage_representative_by_id.setdefault(current, sid)
            current = parent_by_id.get(current) or ""

    items: list[dict] = []
@@ -282,6 +286,12 @@ def audit_session_discoverability(
        api_computed_is_cli = _computed_is_cli_session(api_row) if api_row else False
        index_is_cli = index_row.get("is_cli_session") is True
        sidecar_is_cli = sidecar.get("is_cli_session") is True
+        lineage_root = _lineage_root(sid, parent_by_id)
+        api_representative = api_lineage_representative_by_id.get(sid) or api_lineage_representative_by_id.get(lineage_root)
+        api_lineage_extra = {
+            "represented_by_api_lineage": bool(api_representative),
+            "api_representative_session_id": api_representative,
+        }
        if webui_origin and api_is_cli and api_computed_is_cli:
            items.append(_new_item(
                sid,
@@ -295,6 +305,7 @@ def audit_session_discoverability(
                index_is_cli_session=index_row.get("is_cli_session"),
                sidecar_is_cli_session=sidecar.get("is_cli_session"),
                present_in=present_in,
+                **api_lineage_extra,
            ))
        elif webui_origin and (api_is_cli or index_is_cli or sidecar_is_cli):
            items.append(_new_item(
@@ -309,12 +320,12 @@ def audit_session_discoverability(
                index_is_cli_session=index_row.get("is_cli_session"),
                sidecar_is_cli_session=sidecar.get("is_cli_session"),
                present_in=present_in,
+                **api_lineage_extra,
            ))

        if message_count <= 0 or sid in api:
            continue

-        lineage_root = _lineage_root(sid, parent_by_id)
        is_hidden_snapshot = bool(sidecar.get("pre_compression_snapshot") or index_row.get("pre_compression_snapshot"))
        if sid in api_lineage_ids or lineage_root in api_lineage_ids:
            continue
@@ -407,6 +418,10 @@ def render_discoverability_markdown(report: dict) -> str:
                lines.append(
                    "  - present_in: " + ", ".join(f"{k}={v}" for k, v in sorted(present.items()))
                )
+            if item.get("represented_by_api_lineage"):
+                lines.append(
+                    f"  - represented_by_api_lineage: true via `{item.get('api_representative_session_id')}`"
+                )
    lines.append("")
    return "\n".join(lines)

@@ -1385,24 +1385,17 @@ def _detect_title_language(text: str) -> str:
        return ''
    german_markers = {
        'warum', 'werden', 'wird', 'wurde', 'hier', 'nicht', 'mehr', 'alte', 'alten',
-        'bilder', 'angezeigt', 'session', 'prüfe', 'ich', 'die', 'der', 'das', 'den',
-        'und', 'oder', 'mit', 'für', 'von', 'zu', 'ist', 'sind', 'bitte', 'kannst',
+        'bilder', 'angezeigt', 'prüfe', 'ich', 'und', 'oder', 'mit', 'für', 'von',
+        'zu', 'ist', 'sind', 'bitte', 'kannst',
    }
    tokens = re.findall(r'[A-Za-zÀ-ÖØ-öø-ÿ]+', s)
    german_hits = sum(1 for tok in tokens if tok in german_markers)
-    if re.search(r'[äöüß]', s) or german_hits >= 2:
+    if re.search(r'[äöüß]', s) or german_hits >= 3:
        return 'de'
    return ''


 def _title_prompt_language_rule(user_text: str) -> str:
-    lang = _detect_title_language(user_text)
-    if lang == 'de':
-        return (
-            "Match the language of the user question.\n"
-            "If the user writes German, output a German title.\n"
-            "German good: Alte Session Bilder, WebUI Attachment-Pfade, Kontextkompression Status.\n"
-        )
    return "Match the language of the user question.\n"


@@ -1869,13 +1862,6 @@ def _fallback_title_from_exchange(user_text: str, assistant_text: str) -> Option
    assistant_text = re.sub(r'\s+', ' ', assistant_text).strip()
    combined = f"{user_text} {assistant_text}".strip().lower()
    combined_raw = f"{user_text} {assistant_text}".strip()
-    source_lang = _detect_title_language(user_text)
-
-    if source_lang == 'de' and 'bilder' in combined and 'session' in combined:
-        if 'alt' in combined or 'alte' in combined or 'alten' in combined:
-            return 'Alte Session Bilder'
-        return 'Session Bilder'
-
    def _contains_latin(text: str) -> bool:
        return bool(re.search(r'[A-Za-z]', text or ''))

@@ -125,7 +125,7 @@ def handle_upload(handler):
        dest.write_bytes(file_bytes)
        mime = mimetypes.guess_type(safe_name)[0] or 'application/octet-stream'
        return j(handler, {
-            'filename': safe_name,
+            'filename': dest.name,
            'path': str(dest),
            'size': dest.stat().st_size,
            'mime': mime,
@@ -58,6 +58,14 @@ your real `~/.hermes` unless you intentionally want to test real state. Use an
 isolated Hermes home and follow
 [`docs/onboarding-agent-checklist.md`](onboarding-agent-checklist.md) instead.

+> **Linux note**: run Compose as the user who owns the Hermes home. The command
+> `sudo docker compose up -d` can make Compose expand `${HOME}` as `/root`, so
+> the default `${HOME}/.hermes` bind mount becomes `/root/.hermes` instead of
+> your user's real Hermes directory. Prefer adding your user to the `docker group`
+> and running `docker compose up -d`; if you must preserve the caller environment
+> for a one-off root run, use `sudo -E docker compose up -d` and verify the
+> rendered mount with `docker compose config` first.
+
 ## Scheduled jobs and the gateway daemon

 **Symptom**: Cron jobs created in the Tasks panel never fire. System Settings shows the orange "Gateway not configured" pill, and the Tasks panel shows the same banner above the job list.
@@ -121,12 +121,24 @@ API root. Common examples:
 | Ollama on the same non-Docker host | `http://127.0.0.1:11434/v1` |
 | LM Studio from Docker Desktop | `http://host.docker.internal:1234/v1` |
 | Ollama from Docker Desktop | `http://host.docker.internal:11434/v1` |
+| Local server from Linux Docker Engine | `http://api.local:<port>/v1` with `api.local:host-gateway` in Compose `extra_hosts` |
 | Local server on another LAN machine | `http://<lan-ip>:<port>/v1` |

 Inside Docker, `localhost` means the WebUI container itself, not your Mac,
-Windows host, or another machine on your LAN. If LM Studio or Ollama is running
-outside the container, use `host.docker.internal` on Docker Desktop or the
-server's LAN IP address.
+Windows host, Linux host, or another machine on your LAN. If LM Studio or Ollama
+is running outside the container, use `host.docker.internal` on Docker Desktop,
+use the server's LAN IP address, or add a Linux Docker host alias:
+
+```yaml
+services:
+  hermes-webui:
+    extra_hosts:
+      - "api.local:host-gateway"
+```
+
+Then use `http://api.local:<port>/v1` as the Base URL. The alias avoids writing
+`localhost` in WebUI config where it would resolve to the container loopback
+instead of the host service.

 The wizard probes `<base-url>/models` before saving. A successful probe fills
 the model dropdown. A failed probe blocks the setup step and shows an inline
@@ -2155,7 +2155,7 @@ function attachLiveStream(activeSid, streamId, uploaded=[], options={}){
      // If the user has switched to a different session, don't attempt to
      // reconnect — the old stream's EventSource was closed intentionally
      // during session switch and reconnecting would leak a background stream.
-      if(!_isSessionActivelyViewed(activeSid)) return;
+      if(!_isSessionCurrentPane(activeSid)) return;
      if(_terminalStateReached || _streamFinalized){
        return;
      }
@@ -3147,7 +3147,8 @@ function startClarifyPolling(sid) {
  });

  _clarifyEventSource.onerror = function() {
-    stopClarifyPolling();
+    if (_clarifyEventSource) { try { _clarifyEventSource.close(); } catch(_){} _clarifyEventSource = null; }
+    if (_clarifyHealthTimer) { clearInterval(_clarifyHealthTimer); _clarifyHealthTimer = null; }
    _startClarifyFallbackPoll(sid);
  };

@@ -3177,6 +3178,7 @@ function startClarifyPolling(sid) {
 }

 function _startClarifyFallbackPoll(sid) {
+  _clarifyPollingSessionId = sid || null;
  _clarifyFallbackTimer = setInterval(async () => {
    if (!S.session || S.session.session_id !== sid) {
      stopClarifyPolling(); _hideClarifyCardIfOwner(sid, true, 'session'); return;
@@ -455,6 +455,8 @@ async function newSession(flash, options={}){
  _newSessionInFlight=(async()=>{
    updateQueueBadge();
    S.toolCalls=[];
+    _messagesTruncated=false;
+    _oldestIdx=0;
    clearLiveToolCards();
    // One-shot profile-switch workspace: applied to the first new session after a profile
    // switch, then cleared.  Use a dedicated flag so S._profileDefaultWorkspace (the
@@ -4,6 +4,7 @@ from pathlib import Path

 ROOT = Path(__file__).resolve().parents[1]
 MESSAGES_JS = ROOT / "static" / "messages.js"
+UPLOAD_PY = ROOT / "api" / "upload.py"


 def test_image_uploads_use_server_path_in_attached_files_context():
@@ -19,3 +20,23 @@ def test_image_uploads_use_server_path_in_attached_files_context():

    assert "uploadedPaths=uploaded.map(u=>u&&u.is_image?" not in src
    assert "uploadedPaths=uploaded.map(u=>u&&u.path?u.path" in src
+
+
+def test_duplicate_upload_response_reports_actual_stored_filename(tmp_path, monkeypatch):
+    """Duplicate upload names should report the suffixed stored basename."""
+    monkeypatch.setenv("HERMES_WEBUI_ATTACHMENT_DIR", str(tmp_path))
+
+    from api.upload import _sanitize_upload_name, _upload_destination
+
+    safe_name = _sanitize_upload_name("photo.png")
+    first = _upload_destination("session-a", safe_name)
+    first.write_bytes(b"first")
+    second = _upload_destination("session-a", safe_name)
+
+    assert first.name == "photo.png"
+    assert second.name == "photo-1.png"
+
+    src = UPLOAD_PY.read_text(encoding="utf-8")
+    handle_body = src[src.index("def handle_upload"):src.index("def extract_archive", src.index("def handle_upload"))]
+    assert "'filename': dest.name" in handle_body
+    assert "'filename': safe_name" not in handle_body
@@ -0,0 +1,37 @@
+"""Regression coverage for #3040 item 4: visible-but-unfocused stream reattach."""
+from __future__ import annotations
+
+from pathlib import Path
+
+REPO_ROOT = Path(__file__).resolve().parents[1]
+MESSAGES_JS = (REPO_ROOT / "static" / "messages.js").read_text(encoding="utf-8")
+
+
+def _chat_error_handler() -> str:
+    return MESSAGES_JS.split("source.addEventListener('error',async e=>{", 1)[1].split(
+        "source.addEventListener('cancel'", 1
+    )[0]
+
+
+def test_visible_unfocused_current_session_still_attempts_sse_reconnect():
+    """The immediate chat SSE error path should only require current-pane ownership.
+
+    `_isSessionActivelyViewed()` also gates on document focus/visibility. Hidden tabs
+    are already deferred by `_deferStreamErrorIfPageHidden(source)`, so the direct
+    reconnect branch must not skip a visible-but-unfocused current session.
+    """
+    handler = _chat_error_handler()
+    assert "if(!_isSessionCurrentPane(activeSid)) return;" in handler
+    assert "if(!_isSessionActivelyViewed(activeSid)) return;" not in handler
+    assert handler.index("if(!_isSessionCurrentPane(activeSid)) return;") < handler.index(
+        "if(!_reconnectAttempted && streamId)"
+    )
+
+
+def test_reconnect_gate_comment_matches_current_pane_contract():
+    handler = _chat_error_handler()
+    guard_idx = handler.index("if(!_isSessionCurrentPane(activeSid)) return;")
+    comment_window = handler[max(0, guard_idx - 260):guard_idx]
+    assert "different session" in comment_window
+    assert "visible" not in comment_window.lower()
+    assert "focused" not in comment_window.lower()
@@ -2,6 +2,8 @@

 import sys
 import types
+
+import pytest
 from types import SimpleNamespace


@@ -78,6 +80,48 @@ def test_models_dev_false_suppresses_prefix_heuristic(monkeypatch):
    ) == []


+def test_codex_gpt55_uses_models_dev_including_xhigh(monkeypatch):
+    _install_fake_models_dev(
+        monkeypatch,
+        lambda provider, model: SimpleNamespace(supports_reasoning=True),
+    )
+
+    import api.config as cfg
+
+    result = cfg.resolve_model_reasoning_efforts(
+        "gpt-5.5", provider_id="openai-codex"
+    )
+    assert result == list(cfg.VALID_REASONING_EFFORTS)
+    assert "xhigh" in result
+
+
+def test_codex_metadata_false_returns_empty(monkeypatch):
+    _install_fake_models_dev(
+        monkeypatch,
+        lambda provider, model: SimpleNamespace(supports_reasoning=False),
+    )
+
+    import api.config as cfg
+
+    assert cfg.resolve_model_reasoning_efforts(
+        "gpt-5.5", provider_id="openai-codex"
+    ) == []
+
+
+def test_copilot_gpt55_caps_at_high(monkeypatch):
+    import api.config as cfg
+
+    try:
+        from hermes_cli.models import github_model_reasoning_efforts
+    except ImportError:
+        pytest.skip("hermes_cli not available")
+
+    result = cfg.resolve_model_reasoning_efforts(
+        "gpt-5.5", provider_id="copilot"
+    )
+    assert "xhigh" not in result
+
+
 def test_get_reasoning_status_uses_config_default_model(monkeypatch, tmp_path):
    _install_fake_models_dev(
        monkeypatch,
@@ -98,6 +98,51 @@ def test_audit_reports_stale_cli_flag_on_webui_session(tmp_path):
    assert item["sidecar_is_cli_session"] is True


+def test_stale_flag_hidden_snapshot_reports_visible_api_representative(tmp_path):
+    root = "webui-hidden-stale-cli-root"
+    tip = "webui-visible-lineage-tip"
+    _write_sidecar(
+        tmp_path,
+        root,
+        messages=12,
+        source_tag="webui",
+        session_source="webui",
+        is_cli_session=True,
+        pre_compression_snapshot=True,
+    )
+    _write_index(
+        tmp_path,
+        {
+            "session_id": root,
+            "message_count": 12,
+            "source_tag": "webui",
+            "session_source": "webui",
+            "is_cli_session": True,
+            "pre_compression_snapshot": True,
+        },
+    )
+    db = _state_db(
+        tmp_path,
+        [
+            {"id": root, "source": "webui", "message_count": 12},
+            {"id": tip, "source": "webui", "parent_session_id": root, "message_count": 14},
+        ],
+        {root: 12, tip: 14},
+    )
+
+    report = audit_session_discoverability(
+        tmp_path,
+        state_db_path=db,
+        api_sessions=[{"session_id": tip, "message_count": 14, "parent_session_id": root, "_lineage_root_id": root}],
+    )
+
+    item = next(item for item in report["items"] if item["session_id"] == root)
+    assert item["kind"] == "persisted_source_flag_stale"
+    assert item["present_in"] == {"sidecar": True, "index": True, "state_db": True, "api": False}
+    assert item["represented_by_api_lineage"] is True
+    assert item["api_representative_session_id"] == tip
+
+
 def test_audit_classifies_state_db_only_messageful_rows_as_missing_sidecar(tmp_path):
    sid = "state-only-session"
    db = _state_db(tmp_path, [{"id": sid, "source": "webui", "message_count": 5}], {sid: 5})
@@ -117,6 +117,21 @@ class TestSessionOwnedRuntimeInvariants:
            "the active pane currently owns."
        )

+    def test_clarify_sse_fallback_preserves_owner_session_id(self):
+        messages = read("static/messages.js")
+        start_clarify = _function_body(messages, "startClarifyPolling")
+        fallback = _function_body(messages, "_startClarifyFallbackPoll")
+
+        assert "_clarifyPollingSessionId = sid || null" in fallback, (
+            "Any clarify fallback poller should retain its owner session id."
+        )
+        onerror_idx = start_clarify.index("_clarifyEventSource.onerror")
+        onerror_body = start_clarify[onerror_idx:start_clarify.index("};", onerror_idx)]
+        assert "stopClarifyPolling();" not in onerror_body, (
+            "SSE fallback must not clear _clarifyPollingSessionId before starting the fallback poller."
+        )
+        assert "_startClarifyFallbackPoll(sid)" in onerror_body
+
    def test_live_stream_transport_and_inflight_state_remain_session_keyed(self):
        messages = read("static/messages.js")
        close_live = _function_body(messages, "closeLiveStream")
@@ -199,7 +199,7 @@ class TestGenerateTitleRawViaAuxTimeout(unittest.TestCase):
        self.assertEqual(captured.get('api_key'), 'test-title-api-key')

    def test_title_prompt_requires_matching_user_language(self):
-        """German conversation starts should not invite English title output."""
+        """Conversation starts should get a language-neutral match-language instruction."""
        from api.streaming import generate_title_raw_via_aux

        mock_resp = types.SimpleNamespace(
@@ -227,7 +227,45 @@ class TestGenerateTitleRawViaAuxTimeout(unittest.TestCase):
        self.assertEqual(status, 'llm_aux')
        messages = captured.get('messages') or []
        self.assertIn('Match the language of the user question', messages[0]['content'])
-        self.assertIn('If the user writes German, output a German title', messages[0]['content'])
+        self.assertNotIn('If the user writes German', messages[0]['content'])
+        self.assertNotIn('German good:', messages[0]['content'])
+
+    def test_title_prompt_language_rule_is_same_for_supported_locales(self):
+        from api.streaming import _title_prompt_language_rule
+
+        expected = "Match the language of the user question.\n"
+        examples = [
+            'Warum werden hier die Bilder nicht angezeigt?',
+            'Pourquoi les images ne sont-elles pas affichées ?',
+            '¿Por qué no se muestran las imágenes?',
+            '为什么图片没有显示？',
+            'Why are the images not displayed?',
+        ]
+        for text in examples:
+            with self.subTest(text=text):
+                self.assertEqual(_title_prompt_language_rule(text), expected)
+
+    def test_title_language_detection_avoids_english_tech_false_positives(self):
+        """English tech/jargon text must not be classified as German by shared tokens."""
+        from api.streaming import _detect_title_language
+
+        examples = [
+            'Why did the session die after the DAS storage failover?',
+            'The session can die when DAS storage disconnects.',
+            'Debug the session and DER certificate import failure.',
+        ]
+        for text in examples:
+            with self.subTest(text=text):
+                self.assertEqual(_detect_title_language(text), '')
+
+    def test_title_language_detection_keeps_german_without_umlaut(self):
+        """German without umlauts still needs a language hint when evidence is specific."""
+        from api.streaming import _detect_title_language
+
+        self.assertEqual(
+            _detect_title_language('Warum werden hier die Bilder der alten Session nicht angezeigt?'),
+            'de',
+        )

    def test_german_source_rejects_english_aux_title(self):
        """Regression: an English aux title must not overwrite a German conversation."""
@@ -253,7 +291,7 @@ class TestGenerateTitleRawViaAuxTimeout(unittest.TestCase):
        self.assertEqual(status, 'llm_language_mismatch_aux')
        self.assertEqual(raw_preview, 'Old Session Image Display Issue')

-    def test_german_fallback_keeps_german_topic_words(self):
+    def test_german_fallback_uses_generic_topic_extraction_without_literal_override(self):
        from api.streaming import _fallback_title_from_exchange

        title = _fallback_title_from_exchange(
@@ -261,7 +299,11 @@ class TestGenerateTitleRawViaAuxTimeout(unittest.TestCase):
            'Ich prüfe die Rendering- und Attachment-Pfade im WebUI.',
        )

-        self.assertEqual(title, 'Alte Session Bilder')
+        self.assertIsNotNone(title)
+        self.assertIsInstance(title, str)
+        self.assertNotEqual(title, 'Alte Session Bilder')
+        self.assertNotEqual(title, 'Session Bilder')
+        self.assertIn('Warum', title)

    def test_configured_api_key_is_not_sent_to_caller_supplied_route(self):
        """Regression: title task keys must not leak to explicit fallback routes.
@@ -262,3 +262,29 @@ def test_env_docker_example_warns_about_home_mode_asymmetry():
        ".env.docker.example must include a MULTI-CONTAINER WARNING about "
        "the HERMES_HOME_MODE semantic asymmetry between WebUI and agent."
    )
+
+
+# ── 8: Docker localhost and sudo-compose troubleshooting (#3006, #3012) ────
+
+
+def test_docs_docker_warns_about_sudo_compose_home_expansion():
+    """REGRESSION (#3006): the Docker guide must explain that
+    `sudo docker compose` can expand `${HOME}` to `/root`, mounting the wrong
+    `.hermes` directory into the container."""
+    src = (REPO / "docs" / "docker.md").read_text(encoding="utf-8")
+    assert "sudo docker compose" in src
+    assert "/root/.hermes" in src
+    assert "sudo -E docker compose" in src
+    assert "docker group" in src
+
+
+def test_onboarding_docs_cover_linux_host_gateway_for_container_localhost():
+    """REGRESSION (#3012): local-provider onboarding docs must include the
+    Linux Docker host-gateway shape, not only Docker Desktop's
+    `host.docker.internal` shortcut."""
+    src = (REPO / "docs" / "onboarding.md").read_text(encoding="utf-8")
+    assert "host.docker.internal" in src
+    assert "host-gateway" in src
+    assert "extra_hosts" in src
+    assert "api.local" in src
+    assert "localhost" in src and "container" in src
@@ -1,4 +1,6 @@
 from collections import OrderedDict
+import base64
+import json

 import api.gateway_chat as gateway_chat
 import api.models as models
@@ -117,3 +119,56 @@ def test_gateway_chat_worker_translates_sse_and_persists_session(tmp_path, monke
    assert captured["headers"]["X-hermes-session-id"] == s.session_id
    assert captured["headers"]["X-hermes-session-key"] == f"webui:{s.session_id}"
    assert '"stream": true' in captured["body"]
+
+
+def test_gateway_chat_worker_forwards_image_attachments_as_multimodal_parts(tmp_path, monkeypatch):
+    session_dir = tmp_path / "sessions"
+    session_dir.mkdir()
+    monkeypatch.setattr(models, "SESSION_DIR", session_dir)
+    monkeypatch.setattr(models, "SESSION_INDEX_FILE", session_dir / "_index.json")
+    monkeypatch.setattr(models, "SESSIONS", OrderedDict())
+
+    image_bytes = base64.b64decode(
+        "iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAQAAAC1HAwCAAAAC0lEQVR42mP8/x8AAwMCAO+/p9sAAAAASUVORK5CYII="
+    )
+    image_path = tmp_path / "photo.png"
+    image_path.write_bytes(image_bytes)
+    captured = {}
+
+    class FakeResponse:
+        def __enter__(self):
+            return self
+
+        def __exit__(self, exc_type, exc, tb):
+            return False
+
+        def __iter__(self):
+            yield b'data: {"choices":[{"delta":{"content":"saw it"}}]}\n\n'
+            yield b'data: [DONE]\n\n'
+
+    def fake_urlopen(req, timeout=0):
+        captured["body"] = json.loads(req.data.decode("utf-8"))
+        return FakeResponse()
+
+    monkeypatch.setenv("HERMES_WEBUI_GATEWAY_BASE_URL", "http://gateway.local")
+    monkeypatch.setattr(gateway_chat.urllib.request, "urlopen", fake_urlopen)
+
+    s = new_session()
+    stream_id = "stream-gateway-image-test"
+    s.active_stream_id = stream_id
+    s.save()
+    STREAMS[stream_id] = create_stream_channel()
+
+    gateway_chat._run_gateway_chat_streaming(
+        s.session_id,
+        "What is in this image?",
+        "test-model",
+        str(tmp_path),
+        stream_id,
+        [{"path": str(image_path), "mime": "image/png", "is_image": True}],
+    )
+
+    content = captured["body"]["messages"][0]["content"]
+    assert content[0] == {"type": "text", "text": "What is in this image?"}
+    assert content[1]["type"] == "image_url"
+    assert content[1]["image_url"]["url"].startswith("data:image/png;base64,")