Merge remote-tracking branch 'origin/master' into gitea/feature/end

Resolved conflicts taking origin/master (v0.5.55) as canonical, with local
features re-applied:
- runtime log level (LOG_LEVEL env + dashboard Settings → Logging, applied
  immediately and persisted across restarts)
- free/noAuth provider enable/disable toggle via providerStrategies.enabled
- parallel model testing (Test All Models / Test Selected Keys)

open-sse/providers/registry/selfhosted-embedding.js

@@ -0,0 +1,73 @@
+// Self-hosted, OpenAI-compatible embeddings (llama.cpp / llama-server, vLLM,
+// Infinity, text-embeddings-inference, ...) — the embeddings counterpart of
+// selfhosted-stt and selfhosted-tts.
+//
+// Routing a self-hosted embeddings server already WORKS today, via a custom
+// provider node: getEmbeddingAdapter() matches `openai-compatible-*` and
+// `custom-embedding-*` and returns openaiCompatNode, whose buildUrl reads
+// creds.providerSpecificData.baseUrl. What is missing is a first-class provider,
+// and the gap is visible rather than functional:
+//
+//   /v1/embeddings on such a node          -> 200, correct vectors
+//   the Embedding page in the dashboard    -> the node is not listed at all
+//
+// The page renders getProvidersByKind("embedding") plus provider nodes filtered
+// to `type === "custom-embedding"`. A node created as `openai-compatible` — the
+// natural choice when ONE endpoint serves chat and embeddings behind the same
+// front door — satisfies neither, so a working self-hosted embeddings endpoint is
+// invisible on the page whose job is to show embeddings providers. Diagnosed on a
+// deployment serving Qwen3-Embedding-8B at 4096 dimensions through exactly that
+// shape (2026-08-04).
+//
+// Declaring it as a provider with serviceKinds: ["embedding"] puts it on the page
+// beside Voyage, Jina and the rest, and keeps the per-connection baseUrl that
+// makes self-hosting possible at all.
+//
+// authType is "apikey" rather than "none" for the same reason as the STT and TTS
+// entries: it is what gives the connection a credentials record, and
+// providerSpecificData.baseUrl lives there. Local servers ignore the key itself;
+// any non-empty value works.
+export default {
+  id: "selfhosted-embedding",
+  priority: 50,
+  hasFree: true,
+  alias: "selfhosted-embedding",
+  display: {
+    name: "Self-hosted Embedding",
+    icon: "cloud",
+    color: "#ffffffff",
+    textIcon: "SE",
+    website: "https://github.com/ggml-org/llama.cpp",
+  },
+  category: "apikey",
+  auth: {
+    apiKey: {
+      // Note the /v1: the adapter appends "/embeddings" to whatever it is given,
+      // so a bare http://host:8080 resolves to http://host:8080/embeddings and
+      // misses the OpenAI route entirely. Give it the OpenAI base, the same value
+      // an OpenAI client would use. A trailing /embeddings is tolerated.
+      text: "Set providerSpecificData.baseUrl to the OpenAI base URL, e.g. http://host:8080/v1 — /embeddings is appended. The API key is not checked by local servers; any value works.",
+    },
+  },
+  // A self-hosted server serves whatever model it was started with, so the id
+  // here is a placeholder for the UI: the request passes `model` straight
+  // through, and llama-server ignores an unknown value rather than rejecting it.
+  // Dimensions are deliberately NOT declared — they are a property of the loaded
+  // weights, and asserting a number here would be a guess that silently
+  // contradicts the server.
+  models: [
+    { id: "embedding", name: "Self-hosted embedding model", kind: "embedding" },
+  ],
+  serviceKinds: ["embedding"],
+  embeddingConfig: {
+    // Declared for shape-consistency with the other embedding providers, and
+    // read by the UI — but NOT by the request path. openaiCompatNode resolves the
+    // URL purely from creds.providerSpecificData.baseUrl (falling back to
+    // api.openai.com), so unlike a fixed cloud provider this baseUrl never
+    // reaches the wire. Stated plainly because a reader would otherwise
+    // reasonably assume it is the default endpoint.
+    baseUrl: "http://localhost:8080/v1/embeddings",
+    authType: "apikey",
+    authHeader: "bearer",
+  },
+};