Add TTS endpoint (Phase 1)

.github/workflows/ci.yml

@@ -16,7 +16,6 @@ concurrency:
 # to anonymous, which is what the cache is there to make rare.
 env:
   HF_TOKEN: ${{ secrets.HF_TOKEN }}
-  RUSTUP_TOOLCHAIN: stable
 
 jobs:
   fmt:
@@ -33,8 +32,6 @@ jobs:
 
   clippy:
     runs-on: ubuntu-latest
-    env:
-      RUSTUP_TOOLCHAIN: stable
     steps:
       - uses: actions/checkout@v4
 
@@ -83,8 +80,6 @@ jobs:
 
   test:
     runs-on: ubuntu-latest
-    env:
-      RUSTUP_TOOLCHAIN: stable
     steps:
       - uses: actions/checkout@v4
 
@@ -133,7 +128,6 @@ jobs:
   docs:
     runs-on: ubuntu-latest
     env:
-      RUSTUP_TOOLCHAIN: stable
       RUSTDOCFLAGS: -D warnings
     steps:
       - uses: actions/checkout@v4
@@ -162,8 +156,6 @@ jobs:
 
   check-workshop:
     runs-on: windows-latest
-    env:
-      RUSTUP_TOOLCHAIN: stable
     steps:
       - uses: actions/checkout@v4
 
@@ -234,8 +226,6 @@ jobs:
   # missing-system-package class of failure the Windows-only job cannot see.
   check-workshop-linux:
     runs-on: ubuntu-22.04
-    env:
-      RUSTUP_TOOLCHAIN: stable
     steps:
       - uses: actions/checkout@v4
 
@@ -341,35 +331,6 @@ jobs:
         working-directory: crates/gateway-config-ui/ui
         run: npm test
 
-  msrv:
-    runs-on: ubuntu-latest
-    env:
-      RUSTUP_TOOLCHAIN: 1.89.0
-    steps:
-      - uses: actions/checkout@v4
-
-      - uses: dtolnay/rust-toolchain@1.89.0
-
-      - name: Cache cargo
-        uses: Swatinem/rust-cache@v2
-
-      - name: Cache the embedding model
-        uses: ./.github/actions/hf-model-cache
-
-      - uses: actions/setup-node@v4
-        with:
-          node-version: 22
-          cache: npm
-          cache-dependency-path: crates/*/ui/package-lock.json
-
-      - name: Install UI dependencies
-        run: |
-          npm ci --prefix crates/workshop-server/ui
-          npm ci --prefix crates/gateway-config-ui/ui
-
-      - name: Check on MSRV
-        run: cargo check --locked --workspace --exclude workshop --exclude workshop-server --all-targets --all-features
-
   supply-chain:
     runs-on: ubuntu-latest
     steps:
@@ -391,7 +352,7 @@ jobs:
   # or that job bypasses this gate.
   ci-green:
     runs-on: ubuntu-latest
-    needs: [fmt, clippy, test, docs, check-workshop, check-workshop-linux, ui, msrv, supply-chain]
+    needs: [fmt, clippy, test, docs, check-workshop, check-workshop-linux, ui, supply-chain]
     if: always()
     steps:
       - name: Verify every job succeeded

.github/workflows/release-workshop.yml

@@ -26,11 +26,6 @@ concurrency:
   group: release-workshop-${{ github.ref_name }}
   cancel-in-progress: false
 
-env:
-  # The repo's rust-toolchain.toml pins the MSRV for local builds; CI tests
-  # the current stable.
-  RUSTUP_TOOLCHAIN: stable
-
 jobs:
   prepare:
     runs-on: ubuntu-latest

.github/workflows/stt-miri.yml

@@ -46,16 +46,9 @@ jobs:
   native-whisper:
     runs-on: [self-hosted, windows, cuda]
     timeout-minutes: 90
-    env:
-      RUSTUP_TOOLCHAIN: 1.89
-      RUSTUP_AUTO_INSTALL: "0"
     steps:
       - uses: actions/checkout@v4
 
-      - name: Verify preinstalled MSRV Rust
-        shell: powershell
-        run: tools/validate-rust-1.89.0.ps1
-
       - name: Cache Cargo
         uses: Swatinem/rust-cache@v2
 

AGENTS.md

@@ -12,4 +12,3 @@ Multi-crate Rust workspace for the PromptForge pipeline runtime, inference gatew
 - Long-running work reports through `shared-progress`. Producers report operation state, hosts forward it, and renderers format it.
 - Unsafe code stays in its explicitly owned boundary. Every unsafe block documents its safety invariants immediately before the block.
 - Comments explain a non-obvious constraint, ordering requirement, or workaround. Every platform or external-bug workaround cites its upstream issue URL in the explanatory comment.
-- CI lints with a newer stable toolchain than the pinned local MSRV (`rust-toolchain.toml`). Lints introduced or strengthened after the pin, such as unused glob imports, may fail only on CI. Check with the newer toolchain before pushing when a change touches imports or doc comments; `cargo doc` runs with warnings denied on CI.

Cargo.toml

@@ -13,12 +13,12 @@ default-members = ["crates/gateway"]
 [workspace.package]
 version = "0.3.0"
 edition = "2024"
-rust-version = "1.89"
 license = "BSL-1.0"
 repository = "https://github.com/cppalliance/promptforge"
 
 [workspace.dependencies]
 base64 = "0.22"
+bytes = "1"
 promptforge = { path = "crates/promptforge", version = "0.3.0" }
 promptforge-core = { path = "crates/promptforge-core", version = "0.3.0" }
 promptforge-core-support = { path = "crates/promptforge-core-support", version = "0.3.0" }

README.md

@@ -1,6 +1,5 @@
 [![CI](https://github.com/cppalliance/promptforge/actions/workflows/ci.yml/badge.svg)](https://github.com/cppalliance/promptforge/actions/workflows/ci.yml)
 [![License](https://img.shields.io/badge/license-BSL--1.0-blue.svg)](LICENSE)
-[![Rust](https://img.shields.io/badge/rust-1.89%2B-orange.svg)](https://www.rust-lang.org/)
 
 # PromptForge
 
@@ -65,7 +64,7 @@ Lua sets up the turn. The prose before a Lua block is that block's lazy `prose`
 
 ## Build from source
 
-Every build needs Rust 1.89 or later and Node.js 22. The two web UIs are bundled with esbuild during the Cargo build, so run `npm ci` once in each `ui/` folder after cloning:
+Every build needs Rust and Node.js 22. The two web UIs are bundled with esbuild during the Cargo build, so run `npm ci` once in each `ui/` folder after cloning:
 
 ```bash
 git clone git@github.com:cppalliance/promptforge.git
@@ -109,10 +108,6 @@ Build the guide locally with `mdbook build guide`.
 
 ![Filing cabinets](images/banner-06.png)
 
-## Minimum Rust Version
-
-Rust 1.89 or later.
-
 ## Contributing
 
 Build, format, and test before you open a PR. CI runs `cargo fmt --check`, `clippy -D warnings`, and `cargo test --workspace`.

crates/build-llama-cuda/Cargo.toml

@@ -2,7 +2,6 @@
 name = "build-llama-cuda"
 version.workspace = true
 edition.workspace = true
-rust-version.workspace = true
 license.workspace = true
 repository.workspace = true
 publish = false

crates/build-ui/Cargo.toml

@@ -2,7 +2,6 @@
 name = "build-ui"
 version.workspace = true
 edition.workspace = true
-rust-version.workspace = true
 license.workspace = true
 repository.workspace = true
 publish = false

crates/build-workshop/Cargo.toml

@@ -2,7 +2,6 @@
 name = "build-workshop"
 version.workspace = true
 edition.workspace = true
-rust-version.workspace = true
 license.workspace = true
 repository.workspace = true
 publish = false

crates/gateway-config-ui/Cargo.toml

@@ -2,7 +2,6 @@
 name = "gateway-config-ui"
 version.workspace = true
 edition.workspace = true
-rust-version.workspace = true
 license.workspace = true
 repository.workspace = true
 publish = false

crates/gateway-config-ui/ui/src/components/settings-registry.ts

@@ -160,6 +160,15 @@ function capabilities(): SettingDef[] {
       default: false,
       visibleWhen: (ctx) => ctx.value("thinking") !== "never" && ctx.value("thinking") != null,
     },
+    {
+      key: "voices",
+      label: "Voices",
+      help: "The voices the model offers for speech synthesis.",
+      section: "capabilities",
+      type: "chips",
+      default: [],
+      visibleWhen: (ctx) => ctx.value("kind") === "speech",
+    },
   ];
 }
 

crates/gateway-config-ui/ui/src/services/config-store.ts

@@ -99,6 +99,18 @@ function sameValue(a: unknown, b: unknown): boolean {
   return JSON.stringify(a ?? null) === JSON.stringify(b ?? null);
 }
 
+/**
+ * Drops fields the server accepts on one model kind only. A kind switch
+ * hides the voices control without clearing its value, and the server
+ * rejects a non-speech model carrying `voices`, so the payload must not
+ * keep the stale list.
+ */
+function stripKindBoundFields(data: EntryData): void {
+  if (data["kind"] !== "speech") {
+    delete data["voices"];
+  }
+}
+
 /** A config document's `active_profile` pointer, when it carries one. */
 function profilePointer(config: EntryData): string | null {
   const pointer = config["active_profile"];
@@ -700,7 +712,9 @@ export class ConfigStore {
     const array = modelArray(entry.kind);
     let items = this.entriesOf(payload, array);
     if (entry.draft) {
-      items.push(structuredClone(entry.data));
+      const data = structuredClone(entry.data);
+      stripKindBoundFields(data);
+      items.push(data);
       payload[array] = items;
       return payload;
     }
@@ -718,6 +732,7 @@ export class ConfigStore {
       for (const [key, value] of edits ?? []) {
         writePath(target, key, value);
       }
+      stripKindBoundFields(target);
       const renamed = String(target["name"] ?? entry.name);
       if (renamed !== entry.name) {
         for (const profile of this.entriesOf(payload, "profile")) {

crates/gateway-config-ui/ui/src/views/model-detail.test.mjs

@@ -77,8 +77,8 @@ test("the local detail pane renders the registry sections with the model's value
   const kindSelect = root.querySelector(".field-row[data-key='kind'] .select");
   assert.deepEqual(
     dropdownValues(root, "kind"),
-    ["chat", "embedding", "classifier"],
-    "the header kind dropdown offers the three model kinds",
+    ["chat", "embedding", "classifier", "speech"],
+    "the header kind dropdown offers the four model kinds",
   );
   assert.equal(kindSelect.value, "chat");
 
@@ -442,6 +442,75 @@ test("Save PUTs the edited payload with untouched secrets redacted, then the pen
   );
 });
 
+test("picking the speech kind reveals the voices chips and Save PUTs them", async () => {
+  const stub = fixtureStub();
+  const { dom, root } = await bootApp({ key: "k", stub });
+  navigate(dom, "#/remote/gpt-remote");
+  await settle();
+
+  assert.equal(
+    root.querySelector(".field-row[data-key='voices']"),
+    null,
+    "a chat model hides the voices field",
+  );
+
+  dropdownValues(root, "kind");
+  root.querySelector(".field-row[data-key='kind'] [data-value='speech']").click();
+  await settle();
+
+  const voicesRow = root.querySelector(".field-row[data-key='voices']");
+  assert.ok(voicesRow, "the speech kind reveals the voices field");
+  const chips = voicesRow.querySelector(".chip-input input");
+  chips.value = "nova";
+  chips.dispatchEvent(new dom.window.KeyboardEvent("keydown", { key: "Enter" }));
+  await settle();
+
+  root.querySelector(".detail-save").click();
+  await settle();
+
+  const put = stub.calls.find(
+    (call) => call.url.endsWith("/admin/config") && call.init.method === "PUT",
+  );
+  assert.ok(put, "Save PUTs /admin/config");
+  const model = JSON.parse(put.init.body).model.find((entry) => entry.name === "gpt-remote");
+  assert.equal(model.kind, "speech", "the picked kind carries into the payload");
+  assert.deepEqual(model.voices, ["nova"], "the added chip carries into the payload");
+});
+
+test("switching back from speech hides the voices chips and Save drops them", async () => {
+  const stub = fixtureStub();
+  const { dom, root } = await bootApp({ key: "k", stub });
+  navigate(dom, "#/remote/gpt-remote");
+  await settle();
+
+  dropdownValues(root, "kind");
+  root.querySelector(".field-row[data-key='kind'] [data-value='speech']").click();
+  await settle();
+  const chips = root.querySelector(".field-row[data-key='voices'] .chip-input input");
+  chips.value = "nova";
+  chips.dispatchEvent(new dom.window.KeyboardEvent("keydown", { key: "Enter" }));
+  await settle();
+
+  root.querySelector(".field-row[data-key='kind'] [data-value='chat']").click();
+  await settle();
+  assert.equal(
+    root.querySelector(".field-row[data-key='voices']"),
+    null,
+    "switching back to chat hides the voices field",
+  );
+
+  root.querySelector(".detail-save").click();
+  await settle();
+
+  const put = stub.calls.find(
+    (call) => call.url.endsWith("/admin/config") && call.init.method === "PUT",
+  );
+  assert.ok(put, "Save PUTs /admin/config");
+  const model = JSON.parse(put.init.body).model.find((entry) => entry.name === "gpt-remote");
+  assert.equal(model.kind, "chat", "the reverted kind carries into the payload");
+  assert.equal("voices" in model, false, "the hidden voices stay out of the payload");
+});
+
 test("deleting a model confirms, PUTs the config without it, and returns to the list", async () => {
   const stub = fixtureStub();
   const { dom, root } = await bootApp({ key: "k", stub });

crates/gateway-config-ui/ui/src/views/models-view.ts

@@ -644,7 +644,7 @@ export function createModelsView(deps: ModelsViewDeps): ModelsView {
           help: "The workload this model serves.",
           section: "header",
           type: "dropdown",
-          options: ["chat", "embedding", "classifier"],
+          options: ["chat", "embedding", "classifier", "speech"],
           default: "chat",
         }),
       );

crates/gateway-config/Cargo.toml

@@ -2,7 +2,6 @@
 name = "gateway-config"
 version.workspace = true
 edition.workspace = true
-rust-version.workspace = true
 license.workspace = true
 repository.workspace = true
 publish = false