Release 0.1.59 [auto-version-bump]

.dockerignore

@@ -5,3 +5,6 @@ scripts
 README.md
 AGENTS.md
 VERSION
+node_modules
+package-lock.json
+dist

.gitea/workflows/publish.yaml

@@ -29,6 +29,15 @@ jobs:
           python3 scripts/bump-version.py --check
           scripts/check-frontend.sh
 
+      - name: Bundle Piper worker client code
+        shell: bash
+        run: |
+          set -euo pipefail
+          npm install --no-audit --no-fund
+          npm run build:piper
+          test -s public/tts/piper-wasm-v1/piper-worker.js
+          test -s public/piper-runtime.js
+
       - name: Ensure Helm is available
         shell: bash
         env:
@@ -89,7 +98,7 @@ jobs:
           version="$(python3 scripts/bump-version.py)"
           git config user.name "Gitea Actions"
           git config user.email "actions@users.noreply.gitea"
-          git add VERSION deploy/helm/ai-spel-frontend/Chart.yaml
+          git add VERSION deploy/helm/ai-spel-frontend/Chart.yaml package-lock.json
           git commit -m "Release $version [auto-version-bump]"
           git tag -a "v$version" -m "v$version"
           git push origin HEAD:main "refs/tags/v$version"

AGENTS.md

@@ -3,7 +3,10 @@
 - This repository owns only the static, accessible web client and its container/chart packaging.
 - Rust remains the sole authority for game state. The frontend calls the backend through same-origin `/api/...` and `/version` paths.
 - Keep frontend and backend behind `ai-spel.k3s.k0.nu` so session cookies remain same-origin.
+- The public footer displays frontend, static-service, and API versions; load static-service version from uncached `/static/version.json`.
 - `VERSION` is the only release-version source in this repository. Use `scripts/bump-version.py`; do not manually edit chart versions.
 - Changes are written locally and built, checked, published, and exercised by Gitea Actions on the existing `large` runner and Kubernetes. Never run apps, tests, containers, images, or binaries locally. Do not create or register runners.
 - Never commit secrets, generated credentials, kubeconfigs, or environment files.
 - Helm charts are published to `harbor.k3s.k0.nu/ai-spel`; Argo CD uses the existing `ai-spel` project and namespace.
+- Player-facing speech uses the local Piper WebAssembly adapter when the player has activated audio. The separate `ai-spel-static` Nginx service serves pinned Swedish Piper models and ONNX/Piper runtime files from same-origin `/static/piper-wasm-v1/` URLs with immutable caching. Game text is synthesized on-device and must never be sent to a TTS provider.
+- This pipeline bundles only the Piper worker/client glue. Model/runtime downloads, image builds, and deployment belong to `ai-spel/ai-spel-static` and the existing `large` runner. Never build or run these assets locally.

Dockerfile

@@ -4,6 +4,8 @@ ARG FRONTEND_VERSION
 RUN test -n "$FRONTEND_VERSION"
 COPY index.html /usr/share/nginx/html/index.html
 COPY voice.js /usr/share/nginx/html/voice.js
+COPY public/piper-runtime.js /usr/share/nginx/html/piper-runtime.js
+COPY public/tts/piper-wasm-v1/ /usr/share/nginx/html/tts/piper-wasm-v1/
 COPY nginx/default.conf /etc/nginx/conf.d/default.conf
 USER root
 RUN sed -i "s/__FRONTEND_VERSION__/${FRONTEND_VERSION}/g" /usr/share/nginx/html/index.html

README.md

@@ -12,18 +12,22 @@ The separate `/admin` route provides an authenticated operations view for player
 
 The game is text- and dialogue-based and uses no images. Place descriptions include sound, smell, air/temperature, touch/surface, and spatial-orientation cues. Visible details may also be described in words, but are never required to understand the scene or play. The transcript is screen-reader announced, and Enter submits the input while Shift+Enter inserts a newline; no separate send button is required.
 
-Voice output uses the browser's Swedish speech synthesis for all player-facing game dialogue, onboarding, account responses, character and world creation, gameplay replies, in-game errors, and microphone disclosures. The `/admin` route is excluded. The first unauthenticated visit automatically reads an introduction that explains the game, how to create an account, and how to play; the introduction stays visible as text and can be replayed with `Läs introduktionen igen`. New game replies are read automatically and the transcript remains available to screen readers and as text. Returning players hear the latest saved game reply when they reopen the game. Voice settings can change the Swedish voice and speaking rate, but cannot disable automatic speech. These preferences are stored in browser `localStorage`. If the browser lacks speech synthesis or blocks playback, the same content remains available as text and the introduction can be started again with its replay button.
+Player-facing speech uses Piper TTS in WebAssembly in the browser after audio is activated by a user gesture. It reads game dialogue, onboarding, account responses, character and world creation, gameplay replies, in-game errors, and microphone disclosures; the `/admin` route is excluded. The audio is decoded and played through the Web Audio API, independently of `speechSynthesis`. The first unauthenticated visit keeps the introduction visible and it can be started with `Läs introduktionen`. New game replies are read automatically and the transcript remains available to screen readers and as text. Returning players hear the latest saved game reply when they reopen the game. The player can change speaking rate; narrator pitch is neutral and character pitch is varied consistently by voice identity. These preferences are stored in browser `localStorage`. If WebAssembly, model loading, or audio playback fails, the same content remains available as text and the dialogue offers a retry.
 
-The microphone button beside the text field uses Web Speech API when available and sends only its final Swedish transcript through the same submission path as typed text. Before its first use, the client explains that the browser may process audio through a provider-selected service; the game itself does not receive or store recordings, while the final transcript is saved as ordinary dialogue. Writing `röstinställningar` or saying `röstkommando alternativ` opens temporary voice controls in the dialogue. The player can select an available Swedish voice and speaking rate and enable or disable short audio cues. Voice preferences are stored in browser `localStorage`.
+The Piper engine, ONNX WebAssembly runtime, and all three Swedish medium voice models (Alma, Lisa, and NST) are served by the separate `ai-spel-static` Nginx service from same-origin `/static/piper-wasm-v1/`. Its own Gitea pipeline downloads pinned models, verifies sizes and hashes, and publishes a versioned image and Helm chart independently from frontend changes. The frontend's Piper adapter redirects the library's built-in model URLs to this static service; it does not request voice files from Hugging Face. Voice models are fetched on first use and cached in browser storage when supported. Dialogue text is synthesized on the device and is not sent to a TTS provider. Attribution is available at `/static/piper-wasm-v1/voices/ATTRIBUTION.txt`.
 
-When a character or NPC is created, its saved voice identity is masculine, feminine, or neutral. The biography prompt only assigns masculine/feminine when the character is explicitly described that way; otherwise it uses neutral. Speech synthesis applies a stable, subtly varied pitch/rate profile per character, so a character keeps the same sound across visits. Narration always uses neutral pitch. The browser's selected Swedish voice still determines the underlying voice, so the exact sound depends on installed system voices.
+The microphone button beside the text field uses Web Speech API when available and sends only its final Swedish transcript through the same submission path as typed text. Before its first use, the client explains that the browser may process audio through a provider-selected service; the game itself does not receive or store recordings, while the final transcript is saved as ordinary dialogue. Writing `röstinställningar` or saying `röstkommando alternativ` opens temporary voice controls in the dialogue. The player can adjust speaking rate and enable or disable short audio cues. Voice preferences are stored in browser `localStorage`.
+
+When a character or NPC is created, its saved voice identity is masculine, feminine, or neutral. The biography prompt only assigns masculine/feminine when the character is explicitly described that way; otherwise it uses neutral. Piper applies a stable, subtle pitch/rate profile per character, so a character keeps the same sound across visits. Narration always uses neutral pitch.
 
 System voice commands require the prefix `röstkommando`: `upprepa`, `avbryt`, `hjälp`, `alternativ`, or `paus`. Without the prefix, the same words remain ordinary dialogue. Speech recognition and synthesis are browser-dependent; release acceptance must record which real iPhone/Safari/VoiceOver and Android/Chrome/TalkBack combinations were actually checked.
 
-On iPhone and iPad, Safari may require a direct tap or key press before it permits speech output. The frontend primes speech silently on the first player gesture and then reads game replies automatically. The status reports speech as in progress only after the browser's `onstart` event. Voice settings include **Testa ljudet**; if a game reply does not start, a **Läs senaste repliken** button appears in the dialogue. When Safari reports speech started but the player hears nothing, the status suggests checking device volume and audio output. The introduction is only marked as heard after the browser reports that speech actually started. The speech queue avoids an immediate `cancel()` followed by `speak()`, which older WebKit releases can drop.
+On iPhone and iPad, Safari requires a user gesture to unlock Web Audio. The frontend resumes the audio context during a trusted tap or key press and then reads generated replies automatically. Voice settings include **Testa ljudet**; if a game reply does not start, a **Läs senaste repliken** button appears in the dialogue. First use can take longer while the voice model downloads; progress and errors are announced in the dialogue. Actual iPhone/iPad playback remains a release acceptance check and must not be claimed until tested on a device.
 
 The browser and API stay on the same public origin, `https://ai-spel.k3s.k0.nu`. The ingress routes `/` to this frontend service and routes `/api`, `/version`, and `/health` to the Rust service. That keeps the current server-side session cookie same-origin and avoids browser CORS configuration.
 
+The public footer displays the frontend, static-service, and API versions. It fetches `/static/version.json` without caching; the static service creates that file from its sole `VERSION` source during the same image build used for the matching Helm chart and release tag.
+
 ## Release flow
 
 `VERSION` is the only version source for this repository. Gitea Actions on the existing `large` runner runs the static checks, Helm lint/template, publishes a commit image, bumps the patch version through `scripts/bump-version.py`, creates the matching release commit and Git tag, and publishes the release image, Helm chart, and rendered frontend manifest to Harbor. Argo CD tracks the newest published frontend chart. The image and chart releases use the same version as the commit and tag.

VERSION

@@ -1 +1 @@
-0.1.43
+0.1.59

deploy/helm/ai-spel-frontend/Chart.yaml

@@ -2,5 +2,5 @@ apiVersion: v2
 name: ai-spel-frontend
 description: Static web frontend for the Swedish life simulator
 type: application
-version: 0.1.43
-appVersion: "0.1.43"
+version: 0.1.59
+appVersion: "0.1.59"

docs/adr/0001-piper-es-module-worker.md

@@ -0,0 +1,13 @@
+# ADR 0001: Run Piper in an ES module worker
+
+## Decision
+
+Bundle the Piper worker as an ES module and start it with `new Worker(url, { type: 'module' })`.
+
+## Context
+
+Piper loads ONNX Runtime Web and its WebAssembly loader dynamically. The current IIFE/classic worker bundle reports `TypeError: "undefined" cannot be parsed as a URL` during WASM backend initialization, even though the pinned same-origin ONNX loader and binary are available. This is consistent with module-relative URL metadata being lost in the classic bundle.
+
+## Consequences
+
+The browser must support module workers. Current supported browser targets already require modern WebAssembly and worker support. CI asserts that the worker is built and started in module mode; production acceptance remains the real deployed browser flow.

docs/adr/0002-single-thread-onnx-for-mobile-tts.md

@@ -0,0 +1,13 @@
+# ADR 0002: Run ONNX with one thread inside the Piper worker
+
+## Decision
+
+Configure ONNX Runtime Web to use one thread and stop backend initialization after 60 seconds. Piper already runs in a dedicated worker, so ONNX does not need to create another worker pool.
+
+## Context
+
+On iPad, the threaded ONNX WASM file downloaded fully, but the runtime did not report that initialization had completed. Nested worker startup and shared-memory setup are a likely compatibility boundary on mobile Safari. The available production assets currently include the threaded ONNX build.
+
+## Consequences
+
+This removes ONNX's additional worker pool and bounds initialization failures with a visible error. It may reduce inference throughput on desktop devices. CI and Kubernetes release verification must confirm that Piper still initializes and speaks on supported browsers; iPad acceptance remains a manual device check.

index.html

@@ -20,6 +20,8 @@
     #message { width: 100%; min-height: 3.5rem; box-sizing: border-box; }
     #message-tools { display: flex; flex-wrap: wrap; align-items: center; gap: .5rem; }
     #voice-status { min-height: 1.5em; }
+    #speech-progress { width: min(100%, 32rem); height: 1.25rem; }
+    #speech-progress-value { margin-inline-start: .5rem; font-variant-numeric: tabular-nums; }
     #dialogue li[data-role="voice-controls"] { border: 1px solid currentColor; border-radius: .35rem; padding: .75rem; }
     #dialogue li[data-role="voice-controls"] fieldset { display: grid; gap: .5rem; margin-block: .5rem; }
     #admin-content { display: grid; gap: 1rem; }
@@ -56,6 +58,11 @@
         <span id="message-help" class="sr-only">Tryck Enter för att skicka. Tryck Skift och Enter för ny rad.</span>
       </form>
       <p id="voice-status" role="status" aria-live="polite"></p>
+      <div id="speech-progress-container" hidden>
+        <label for="speech-progress">Hämtar svensk röstmodell till enheten</label>
+        <progress id="speech-progress" aria-label="Nedladdning av svensk röstmodell"></progress>
+        <output id="speech-progress-value" for="speech-progress">Väntar på nedladdning</output>
+      </div>
     </section>
     <section id="admin-view" aria-labelledby="admin-heading" hidden>
       <h1 id="admin-heading">Administration</h1>
@@ -71,7 +78,8 @@
       <div id="admin-content" aria-live="polite" aria-busy="false"></div>
     </section>
   </main>
-  <footer id="version-footer">Frontend <span id="frontend-version">__FRONTEND_VERSION__</span> · API <span id="api-version">hämtar version…</span></footer>
+  <footer id="version-footer">Frontend <span id="frontend-version">__FRONTEND_VERSION__</span> · Statik <span id="static-version">hämtar version…</span> · API <span id="api-version">hämtar version…</span></footer>
+  <script src="/piper-runtime.js?v=__FRONTEND_VERSION__"></script>
   <script src="/voice.js?v=__FRONTEND_VERSION__"></script>
   <script>
     const auth = document.querySelector('#auth');
@@ -156,6 +164,62 @@
       const authVoiceStatus = document.querySelector('#auth-voice-status');
       if (authVoiceStatus && !auth.hidden && message) authVoiceStatus.textContent = message;
     }
+    function updateSpeechProgress(message = '') {
+      const container = document.querySelector('#speech-progress-container');
+      const progress = document.querySelector('#speech-progress');
+      const value = document.querySelector('#speech-progress-value');
+      const label = container.querySelector('label');
+      const preparing = message.startsWith('Förbereder svensk uppläsning.');
+      const phase = [
+        'Laddar WebAssembly-motorn för svensk uppläsning.',
+        'Startar WebAssembly-motorn efter nedladdning av',
+        'Hämtar information om den svenska röstmodellen.',
+        'Ansluter till servern för att hämta den svenska röstmodellen.',
+        'Läser in den svenska röstmodellen.',
+        'Röstmodellen är inläst. Skapar uppläsningen.',
+      ].find(text => message.startsWith(text));
+      const match = message.match(/^Hämtar svensk röstmodell till enheten: (\d+) procent\.$/);
+      const bytesMatch = message.match(/^Hämtar svensk röstmodell till enheten: ([\d.,]+) MB hämtade\.$/);
+      const runtimeFile = message.match(/^(?:Hämtar|Läser in) WebAssembly-filen ([\w.-]+)\.?$/);
+      const runtimePercent = message.match(/^Hämtar WebAssembly-filen ([\w.-]+): (\d+) procent\.$/);
+      const runtimeBytes = message.match(/^Hämtar WebAssembly-filen ([\w.-]+): ([\d.,]+) MB hämtade\.$/);
+      if (!preparing && !phase && !match && !bytesMatch && !runtimeFile && !runtimePercent && !runtimeBytes) {
+        container.hidden = true;
+        progress.removeAttribute('value');
+        value.textContent = 'Väntar på nedladdning';
+        return false;
+      }
+      container.hidden = false;
+      label.textContent = runtimePercent || runtimeBytes
+        ? `Hämtar WebAssembly-filen ${runtimePercent?.[1] || runtimeBytes?.[1]}`
+        : runtimeFile
+          ? runtimeFile[0].replace(/\.$/, '')
+          : phase || 'Hämtar svensk röstmodell till enheten';
+      if (runtimePercent) {
+        progress.value = Math.max(0, Math.min(100, Number(runtimePercent[2])));
+        value.textContent = `${runtimePercent[2]}%`;
+        return true;
+      }
+      if (runtimeBytes) {
+        progress.removeAttribute('value');
+        value.textContent = `${runtimeBytes[2]} MB hämtade`;
+        return true;
+      }
+      if (match) {
+        const percent = Math.max(0, Math.min(100, Number(match[1])));
+        progress.value = percent;
+        value.textContent = `${percent}%`;
+        return true;
+      }
+      if (bytesMatch) {
+        progress.removeAttribute('value');
+        value.textContent = `${bytesMatch[1]} MB hämtade`;
+        return true;
+      }
+      progress.removeAttribute('value');
+      value.textContent = phase ? 'Pågår…' : 'Förbereder…';
+      return true;
+    }
     function clearSpeechRecovery() {
       speechRecoveryElement?.remove();
       speechRecoveryElement = null;
@@ -217,8 +281,15 @@
         microphone.setAttribute('aria-pressed', String(listening));
         microphone.textContent = listening ? 'Avsluta mikrofon' : 'Starta mikrofon';
         refreshMicrophone();
-        if (message) setVoiceStatus(message);
-        else if (state === 'IDLE') setVoiceStatus('');
+        if (message) {
+          const downloading = updateSpeechProgress(message);
+          setVoiceStatus(downloading && message.startsWith('Hämtar svensk röstmodell')
+            ? 'Hämtar svensk röstmodell till enheten.'
+            : message);
+        } else if (state === 'IDLE') {
+          updateSpeechProgress('');
+          setVoiceStatus('');
+        }
         if (/Läs senaste repliken/.test(message)) showSpeechRecovery(message);
         playVoiceSignal(state === 'IDLE' && /Mikrofonen är avstängd/.test(message) ? 'STOPPED' : state);
       },
@@ -251,17 +322,17 @@
       const voiceLabel = document.createElement('label'); voiceLabel.textContent = 'Svensk röst';
       const voice = document.createElement('select'); voice.setAttribute('aria-label', 'Svensk röst');
       const defaultVoice = document.createElement('option'); defaultVoice.value = ''; defaultVoice.textContent = 'Systemets standardröst'; voice.append(defaultVoice);
-      function refreshVoices() {
-        const selected = voiceSettings.voiceName;
-        voice.replaceChildren(defaultVoice.cloneNode(true));
-        voiceController.getVoices().filter(entry => /^sv(-|$)/i.test(entry.lang)).forEach(entry => {
-          const option = document.createElement('option'); option.value = entry.name; option.textContent = `${entry.name} (${entry.lang})`; voice.append(option);
-        });
-        voice.value = selected;
-      }
-      refreshVoices();
-      window.speechSynthesis?.addEventListener?.('voiceschanged', refreshVoices);
-      voice.value = voiceSettings.voiceName; voiceLabel.append(voice); fieldset.append(voiceLabel);
+      const piperVoice = document.createElement('option');
+      piperVoice.value = 'piper-sv-nst';
+      piperVoice.textContent = 'Piper – svensk röst på enheten';
+      voice.append(piperVoice);
+      voice.value = piperVoice.value;
+      voiceSettings.voiceName = piperVoice.value;
+      voiceLabel.append(voice); fieldset.append(voiceLabel);
+      const modelCredits = document.createElement('a');
+      modelCredits.href = '/static/piper-wasm-v1/voices/ATTRIBUTION.txt';
+      modelCredits.textContent = 'Svenska rösters upphov och licenser';
+      fieldset.append(modelCredits);
       const signalLabel = document.createElement('label'); const signals = document.createElement('input');
       signals.type = 'checkbox'; signals.checked = voiceSettings.soundSignals;
       signalLabel.append(signals, document.createTextNode(' Ljudsignal vid röstinmatning')); fieldset.append(signalLabel);
@@ -527,8 +598,7 @@
           body: JSON.stringify({input: message, current_draft: worldDraft}),
         });
         worldDraft = proposal.draft;
-        const senses = worldDraft.location_senses;
-        appendLine('assistant', `${proposal.message}\n\nVärld: ${worldDraft.name}\nStartplats: ${worldDraft.location_name}. ${worldDraft.location_description}\nLjud: ${senses.sound}\nDoft: ${senses.smell}\nLuft och temperatur: ${senses.air_and_temperature}\nBeröring och ytor: ${senses.touch_and_surfaces}\nOrientering: ${senses.spatial_orientation}\nStartbelopp: ${worldDraft.starting_balance_sek} kronor. ${worldDraft.offer_name} kostar ${worldDraft.offer_price_sek} kronor.\n\nSkriv ändringar eller “godkänn”.`);
+        appendLine('assistant', `${proposal.message}\n\nVärld: ${worldDraft.name}\nStartplats: ${worldDraft.location_name}. ${worldDraft.location_description}\nStartbelopp: ${worldDraft.starting_balance_sek} kronor. ${worldDraft.offer_name} kostar ${worldDraft.offer_price_sek} kronor.\n\nSkriv ändringar eller “godkänn”.`);
       } catch (error) {
         appendLine('assistant', `Förslaget kunde inte tas fram: ${error.message}. Skriv “försök igen” när du vill försöka på nytt.`);
       }
@@ -566,8 +636,7 @@
         voiceController?.speak(latestAssistantText, {role: 'narrator', voiceIdentity: 'neutral'});
       } else if (lines.length === 0 && gameState?.world) {
         const place = gameState.world.location;
-        const senses = place.senses || {};
-        appendLine('assistant', `Du börjar på ${place.name}. ${place.description} Ljud: ${senses.sound || 'Inget särskilt ljud beskrivet.'} Doft: ${senses.smell || 'Ingen särskild doft beskriven.'} Luft och temperatur: ${senses.air_and_temperature || 'Inte beskrivet.'} Beröring och ytor: ${senses.touch_and_surfaces || 'Inte beskrivet.'} Orientering: ${senses.spatial_orientation || 'Inte beskrivet.'}`);
+        appendLine('assistant', `Du börjar på ${place.name}. ${place.description}`);
       }
     }
     async function openGame() {
@@ -862,6 +931,11 @@
     }).catch(() => {
       document.querySelector('#api-version').textContent = 'otillgänglig';
     });
+    request('/static/version.json', {cache: 'no-store'}).then(({version}) => {
+      document.querySelector('#static-version').textContent = version;
+    }).catch(() => {
+      document.querySelector('#static-version').textContent = 'otillgänglig';
+    });
     request('/api/me').then(() => location.pathname === '/admin' ? openAdmin() : openGame()).catch(showAuth);
   </script>
 </body>

nginx/default.conf

@@ -9,10 +9,27 @@ server {
         return 204;
     }
 
+    location ^~ /tts/piper-wasm-v1/ {
+        types {
+            application/wasm wasm;
+            application/javascript js mjs;
+            application/json json;
+            application/octet-stream onnx;
+            text/plain txt;
+        }
+        add_header Cache-Control "public, max-age=31536000, immutable" always;
+        add_header Cross-Origin-Opener-Policy "same-origin" always;
+        add_header Cross-Origin-Embedder-Policy "require-corp" always;
+        add_header Cross-Origin-Resource-Policy "same-origin" always;
+        try_files $uri =404;
+    }
+
     location / {
         add_header Cache-Control "no-store, no-cache, must-revalidate, proxy-revalidate, max-age=0" always;
         add_header Pragma "no-cache" always;
         add_header Expires "0" always;
+        add_header Cross-Origin-Opener-Policy "same-origin" always;
+        add_header Cross-Origin-Embedder-Policy "require-corp" always;
         try_files $uri $uri/ /index.html;
     }
 }

package-lock.json

@@ -0,0 +1,610 @@
+{
+  "name": "ai-spel-frontend-assets",
+  "lockfileVersion": 3,
+  "requires": true,
+  "packages": {
+    "": {
+      "name": "ai-spel-frontend-assets",
+      "dependencies": {
+        "@diffusionstudio/piper-wasm": "1.0.0",
+        "@mintplex-labs/piper-tts-web": "1.0.3",
+        "esbuild": "0.25.5",
+        "onnxruntime-web": "1.20.1"
+      }
+    },
+    "node_modules/@diffusionstudio/piper-wasm": {
+      "version": "1.0.0",
+      "resolved": "https://registry.npmjs.org/@diffusionstudio/piper-wasm/-/piper-wasm-1.0.0.tgz",
+      "integrity": "sha512-4Hgh7wJ1PuGEVgVi1CpducESnyXwjFRJN4zXjYRpxgquM+Zh6Eqq8ZaiGpCKm4yXvT1Y2SPQXbv0dEckFD9NaQ==",
+      "license": "MIT"
+    },
+    "node_modules/@esbuild/aix-ppc64": {
+      "version": "0.25.5",
+      "resolved": "https://registry.npmjs.org/@esbuild/aix-ppc64/-/aix-ppc64-0.25.5.tgz",
+      "integrity": "sha512-9o3TMmpmftaCMepOdA5k/yDw8SfInyzWWTjYTFCX3kPSDJMROQTb8jg+h9Cnwnmm1vOzvxN7gIfB5V2ewpjtGA==",
+      "cpu": [
+        "ppc64"
+      ],
+      "license": "MIT",
+      "optional": true,
+      "os": [
+        "aix"
+      ],
+      "engines": {
+        "node": ">=18"
+      }
+    },
+    "node_modules/@esbuild/android-arm": {
+      "version": "0.25.5",
+      "resolved": "https://registry.npmjs.org/@esbuild/android-arm/-/android-arm-0.25.5.tgz",
+      "integrity": "sha512-AdJKSPeEHgi7/ZhuIPtcQKr5RQdo6OO2IL87JkianiMYMPbCtot9fxPbrMiBADOWWm3T2si9stAiVsGbTQFkbA==",
+      "cpu": [
+        "arm"
+      ],
+      "license": "MIT",
+      "optional": true,
+      "os": [
+        "android"
+      ],
+      "engines": {
+        "node": ">=18"
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+    "node_modules/flatbuffers": {
+      "version": "1.12.0",
+      "resolved": "https://registry.npmjs.org/flatbuffers/-/flatbuffers-1.12.0.tgz",
+      "integrity": "sha512-c7CZADjRcl6j0PlvFy0ZqXQ67qSEZfrVPynmnL+2zPc+NtMvrF8Y0QceMo7QqnSPc7+uWjUIAbvCQ5WIKlMVdQ==",
+      "license": "SEE LICENSE IN LICENSE.txt"
+    },
+    "node_modules/guid-typescript": {
+      "version": "1.0.9",
+      "resolved": "https://registry.npmjs.org/guid-typescript/-/guid-typescript-1.0.9.tgz",
+      "integrity": "sha512-Y8T4vYhEfwJOTbouREvG+3XDsjr8E3kIr7uf+JZ0BYloFsttiHU0WfvANVsR7TxNUJa/WpCnw/Ino/p+DeBhBQ==",
+      "license": "ISC"
+    },
+    "node_modules/long": {
+      "version": "5.3.2",
+      "resolved": "https://registry.npmjs.org/long/-/long-5.3.2.tgz",
+      "integrity": "sha512-mNAgZ1GmyNhD7AuqnTG3/VQ26o760+ZYBPKjPvugO8+nLbYfX6TVpJPseBvopbdY+qpZ/lKUnmEc1LeZYS3QAA==",
+      "license": "Apache-2.0"
+    },
+    "node_modules/onnxruntime-common": {
+      "version": "1.20.1",
+      "resolved": "https://registry.npmjs.org/onnxruntime-common/-/onnxruntime-common-1.20.1.tgz",
+      "integrity": "sha512-YiU0s0IzYYC+gWvqD1HzLc46Du1sXpSiwzKb63PACIJr6LfL27VsXSXQvt68EzD3V0D5Bc0vyJTjmMxp0ylQiw==",
+      "license": "MIT"
+    },
+    "node_modules/onnxruntime-web": {
+      "version": "1.20.1",
+      "resolved": "https://registry.npmjs.org/onnxruntime-web/-/onnxruntime-web-1.20.1.tgz",
+      "integrity": "sha512-TePF6XVpLL1rWVMIl5Y9ACBQcyCNFThZON/jgElNd9Txb73CIEGlklhYR3UEr1cp5r0rbGI6nDwwrs79g7WjoA==",
+      "license": "MIT",
+      "dependencies": {
+        "flatbuffers": "^1.12.0",
+        "guid-typescript": "^1.0.9",
+        "long": "^5.2.3",
+        "onnxruntime-common": "1.20.1",
+        "platform": "^1.3.6",
+        "protobufjs": "^7.2.4"
+      }
+    },
+    "node_modules/platform": {
+      "version": "1.3.6",
+      "resolved": "https://registry.npmjs.org/platform/-/platform-1.3.6.tgz",
+      "integrity": "sha512-fnWVljUchTro6RiCFvCXBbNhJc2NijN7oIQxbwsyL0buWJPG85v81ehlHI9fXrJsMNgTofEoWIQeClKpgxFLrg==",
+      "license": "MIT"
+    },
+    "node_modules/protobufjs": {
+      "version": "7.6.6",
+      "resolved": "https://registry.npmjs.org/protobufjs/-/protobufjs-7.6.6.tgz",
+      "integrity": "sha512-dYDWdjSl5RNb7SgPxGQcRU+GtvP7s2fpkrY0r432PcOIaZ0/rBcxEZnQN67iJhFuQiVw754JDoPruPCNdGsbjg==",
+      "hasInstallScript": true,
+      "license": "BSD-3-Clause",
+      "dependencies": {
+        "@protobufjs/aspromise": "^1.1.2",
+        "@protobufjs/base64": "^1.1.2",
+        "@protobufjs/codegen": "^2.0.5",
+        "@protobufjs/eventemitter": "^1.1.1",
+        "@protobufjs/fetch": "^1.1.1",
+        "@protobufjs/float": "^1.0.2",
+        "@protobufjs/path": "^1.1.2",
+        "@protobufjs/pool": "^1.1.0",
+        "@protobufjs/utf8": "^1.1.1",
+        "@types/node": ">=13.7.0",
+        "long": "^5.3.2"
+      },
+      "engines": {
+        "node": ">=12.0.0"
+      }
+    },
+    "node_modules/undici-types": {
+      "version": "8.9.0",
+      "resolved": "https://registry.npmjs.org/undici-types/-/undici-types-8.9.0.tgz",
+      "integrity": "sha512-KTDyRTYX8sWmKXAikPHHSyc63CRPETMctyjKFupcC6OBLXT3xsN0e9aF7m+mIXutFWpUXuedtowG7iLOzp0kQg==",
+      "license": "MIT"
+    }
+  }
+}

package.json

@@ -0,0 +1,14 @@
+{
+  "name": "ai-spel-frontend-assets",
+  "private": true,
+  "description": "Build-only Piper WebAssembly assets for the static game client.",
+  "scripts": {
+    "build:piper": "node scripts/build-piper.mjs"
+  },
+  "dependencies": {
+    "@diffusionstudio/piper-wasm": "1.0.0",
+    "@mintplex-labs/piper-tts-web": "1.0.3",
+    "esbuild": "0.25.5",
+    "onnxruntime-web": "1.20.1"
+  }
+}

piper-download-progress.mjs

@@ -0,0 +1,37 @@
+export function trackDownloadProgress(response, {id, postMessage, asset = 'model', file}) {
+  const reader = response.body?.getReader?.();
+  if (!reader || typeof ReadableStream !== 'function' || typeof Response !== 'function') return response;
+
+  const total = Number(response.headers.get('content-length')) || 0;
+  let loaded = 0;
+  const body = new ReadableStream({
+    async pull(controller) {
+      try {
+        const {done, value} = await reader.read();
+        if (done) {
+          if (asset === 'runtime') {
+            postMessage({id, type: 'progress', progress: {stage: 'initializing-runtime', file}});
+          }
+          controller.close();
+          return;
+        }
+        loaded += value.byteLength;
+        const progress = {asset, loaded, total};
+        if (file) progress.file = file;
+        postMessage({id, type: 'progress', progress});
+        controller.enqueue(value);
+      } catch (error) {
+        controller.error(error);
+      }
+    },
+    cancel(reason) {
+      return reader.cancel(reason);
+    },
+  });
+
+  return new Response(body, {
+    status: response.status,
+    statusText: response.statusText,
+    headers: response.headers,
+  });
+}

piper-model-routing.mjs

@@ -0,0 +1,9 @@
+const PIPER_MODEL_ORIGIN = 'https://huggingface.co/diffusionstudio/piper-voices/resolve/main/';
+const localPathPrefix = '/static/piper-wasm-v1/voices/';
+
+export function localPiperModelUrl(requestedUrl, origin) {
+  if (!requestedUrl.startsWith(PIPER_MODEL_ORIGIN)) return null;
+  const relativePath = requestedUrl.slice(PIPER_MODEL_ORIGIN.length);
+  if (!/^[\w./-]+$/.test(relativePath) || relativePath.split('/').includes('..')) return null;
+  return new URL(`${localPathPrefix}${relativePath}`, origin).href;
+}

piper-onnx-config.mjs

@@ -0,0 +1,14 @@
+const assetRoot = '/static/piper-wasm-v1/onnx/';
+
+export function createOnnxWasmPaths(origin) {
+  const absoluteAssetRoot = new URL(assetRoot, origin).href;
+  return absoluteAssetRoot;
+}
+
+export function configureOnnxRuntime(onnxRuntime) {
+  if (!onnxRuntime?.env?.wasm) throw new TypeError('ONNX Runtime WebAssembly settings are unavailable.');
+  // Piper already runs in a worker. Avoid a second worker pool on mobile Safari.
+  onnxRuntime.env.wasm.numThreads = 1;
+  onnxRuntime.env.wasm.initTimeout = 60000;
+}
+

piper-runtime.js

@@ -0,0 +1,56 @@
+const version = document.querySelector('#frontend-version')?.textContent || 'dev';
+const workerUrl = `/tts/piper-wasm-v1/piper-worker.js?v=${encodeURIComponent(version)}`;
+let worker;
+let requestId = 0;
+const pending = new Map();
+
+function getWorker() {
+  if (worker) return worker;
+  // ONNX Runtime resolves its WASM loader relative to the worker module URL.
+  // Keep the worker as ESM so import.meta.url remains available at runtime.
+  worker = new Worker(workerUrl, {type: 'module'});
+  worker.onmessage = event => {
+    const message = event.data || {};
+    const request = pending.get(message.id);
+    if (!request) return;
+    if (message.type === 'progress') {
+      request.onProgress?.(message.progress);
+    } else {
+      pending.delete(message.id);
+      if (message.type === 'audio') request.resolve(new Blob([message.audio], {type: 'audio/x-wav'}));
+      else request.reject(new Error(message.error || 'Piper-arbetaren misslyckades.'));
+    }
+  };
+  worker.onerror = event => {
+    const details = [event.message, event.filename && `${event.filename}:${event.lineno || 0}:${event.colno || 0}`]
+      .filter(Boolean)
+      .join(' — ');
+    const error = new Error(details
+      ? `Piper-arbetaren kunde inte startas: ${details}`
+      : 'Piper-arbetaren kunde inte startas.');
+    for (const request of pending.values()) request.reject(error);
+    pending.clear();
+    worker?.terminate();
+    worker = null;
+  };
+  worker.onmessageerror = () => {
+    const error = new Error('Piper-arbetaren skickade ett oläsbart svar.');
+    for (const request of pending.values()) request.reject(error);
+    pending.clear();
+    worker?.terminate();
+    worker = null;
+  };
+  return worker;
+}
+
+window.GamePiper = {
+  voiceId: 'sv_SE-nst-medium',
+  synthesize(text, onProgress) {
+    return new Promise((resolve, reject) => {
+      const id = ++requestId;
+      pending.set(id, {resolve, reject, onProgress});
+      try { getWorker().postMessage({id, text: String(text)}); }
+      catch (error) { pending.delete(id); reject(error); }
+    });
+  },
+};

piper-worker.js

@@ -0,0 +1,90 @@
+import {TtsSession} from '@mintplex-labs/piper-tts-web';
+import * as onnxRuntime from 'onnxruntime-web';
+import {trackDownloadProgress} from './piper-download-progress.mjs';
+import {localPiperModelUrl} from './piper-model-routing.mjs';
+import {configureOnnxRuntime, createOnnxWasmPaths} from './piper-onnx-config.mjs';
+
+const VOICE_ID = 'sv_SE-nst-medium';
+const ASSET_ROOT = '/static/piper-wasm-v1';
+const localFetch = self.fetch.bind(self);
+
+function reportStage(id, stage, details = {}) {
+  if (Number.isSafeInteger(id)) self.postMessage({id, type: 'progress', progress: {stage, ...details}});
+}
+
+// Keep the TTS library's OPFS cache logic, but serve models/config from the
+// same-origin static asset service instead of its built-in external model URL.
+self.fetch = async (resource, options) => {
+  const requestedUrl = resource instanceof Request ? resource.url : String(resource);
+  const localModelUrl = localPiperModelUrl(requestedUrl, self.location.origin);
+  if (!localModelUrl) {
+    const runtimeAsset = requestedUrl.includes('/static/piper-wasm-v1/onnx/');
+    const runtimeFile = runtimeAsset ? new URL(requestedUrl, self.location.origin).pathname.split('/').pop() : undefined;
+    if (activeRequestId && runtimeAsset) {
+      reportStage(activeRequestId, 'loading-runtime-assets', {file: runtimeFile});
+    }
+    const response = await localFetch(resource, options);
+    if (!activeRequestId || !runtimeAsset) return response;
+    reportStage(activeRequestId, 'reading-runtime-assets', {file: runtimeFile});
+    return trackDownloadProgress(response, {
+      id: activeRequestId,
+      asset: 'runtime',
+      file: runtimeFile,
+      postMessage: message => self.postMessage(message),
+    });
+  }
+  const isModel = localModelUrl.endsWith('.onnx');
+  if (activeRequestId) reportStage(activeRequestId, isModel ? 'loading-model' : 'loading-model-info');
+  const redirected = resource instanceof Request ? new Request(localModelUrl, resource) : localModelUrl;
+  const response = await localFetch(redirected, options);
+  if (!activeRequestId || !isModel) return response;
+  reportStage(activeRequestId, 'reading-model');
+  return trackDownloadProgress(response, {
+    id: activeRequestId,
+    postMessage: message => self.postMessage(message),
+  });
+};
+
+let sessionPromise;
+let inferenceQueue = Promise.resolve();
+let activeRequestId = null;
+
+async function getSession() {
+  if (!sessionPromise) {
+    configureOnnxRuntime(onnxRuntime);
+    sessionPromise = TtsSession.create({
+      voiceId: VOICE_ID,
+      wasmPaths: {
+        onnxWasm: createOnnxWasmPaths(self.location.origin),
+        piperData: `${ASSET_ROOT}/piper/piper_phonemize.data`,
+        piperWasm: `${ASSET_ROOT}/piper/piper_phonemize.wasm`,
+      },
+    }).catch(error => {
+      sessionPromise = null;
+      throw error;
+    });
+  }
+  return sessionPromise;
+}
+
+async function synthesizeMessage(event) {
+  const {id, text} = event.data || {};
+  if (!Number.isSafeInteger(id) || typeof text !== 'string') return;
+  activeRequestId = id;
+  reportStage(id, 'loading-runtime');
+  try {
+    const session = await getSession();
+    reportStage(id, 'model-ready');
+    const blob = await session.predict(text);
+    const audio = await blob.arrayBuffer();
+    self.postMessage({id, type: 'audio', audio}, [audio]);
+  } catch (error) {
+    self.postMessage({id, type: 'error', error: String(error?.message || error)});
+  } finally {
+    activeRequestId = null;
+  }
+}
+
+self.addEventListener('message', event => {
+  inferenceQueue = inferenceQueue.then(() => synthesizeMessage(event));
+});

scripts/build-piper.mjs

@@ -0,0 +1,46 @@
+import {build} from 'esbuild';
+import {mkdir, rm, readFile} from 'node:fs/promises';
+import {join, resolve} from 'node:path';
+
+const root = process.cwd();
+const publicRoot = join(root, 'public');
+const workerRoot = join(publicRoot, 'tts', 'piper-wasm-v1');
+
+await rm(workerRoot, {recursive: true, force: true});
+await mkdir(workerRoot, {recursive: true});
+
+await build({
+  entryPoints: [resolve(root, 'piper-runtime.js')],
+  outfile: join(publicRoot, 'piper-runtime.js'),
+  bundle: true,
+  format: 'iife',
+  platform: 'browser',
+  target: ['es2022'],
+  external: ['fs', 'path'],
+  sourcemap: false,
+  legalComments: 'none',
+});
+
+await build({
+  entryPoints: [resolve(root, 'piper-worker.js')],
+  outfile: join(workerRoot, 'piper-worker.js'),
+  bundle: true,
+  format: 'esm',
+  platform: 'browser',
+  target: ['es2022'],
+  external: ['fs', 'path'],
+  sourcemap: false,
+  legalComments: 'none',
+});
+
+const workerBundle = await readFile(join(workerRoot, 'piper-worker.js'), 'utf8');
+for (const route of [
+  'https://huggingface.co/diffusionstudio/piper-voices/resolve/main/',
+  '/static/piper-wasm-v1',
+  '/static/piper-wasm-v1/voices/',
+  '/static/piper-wasm-v1/onnx/',
+]) {
+  if (!workerBundle.includes(route)) throw new Error(`The Piper worker is missing static route ${route}`);
+}
+
+console.log(`Piper worker bundle prepared at ${workerRoot}`);

scripts/check-frontend.sh

@@ -5,8 +5,15 @@ test -s index.html
 grep -q '<html lang="sv">' index.html
 grep -q 'id="frontend-version">__FRONTEND_VERSION__' index.html
 grep -q '<script src="/voice.js?v=__FRONTEND_VERSION__"></script>' index.html
+grep -q '<script src="/piper-runtime.js?v=__FRONTEND_VERSION__"></script>' index.html
 grep -q 'no-store, no-cache, must-revalidate, proxy-revalidate, max-age=0' nginx/default.conf
+grep -q 'Cross-Origin-Embedder-Policy "require-corp"' nginx/default.conf
+grep -q 'add_header Cross-Origin-Embedder-Policy "require-corp" always;' nginx/default.conf
+grep -q 'add_header Cross-Origin-Resource-Policy "same-origin" always;' nginx/default.conf
+grep -q 'application/javascript js mjs;' nginx/default.conf
 grep -q "request('/version')" index.html
+grep -q 'id="static-version">hämtar version…' index.html
+grep -q "request('/static/version.json', {cache: 'no-store'})" index.html
 grep -Fq "credentials: 'same-origin'" index.html
 grep -q 'id="dialogue" aria-label="Dialoghistorik" role="log" aria-live="polite"' index.html
 grep -q 'id="message" name="message"' index.html
@@ -22,6 +29,11 @@ grep -q "location.pathname !== '/admin'" index.html
 grep -q "if (options.speak !== false && location.pathname !== '/admin')" index.html
 grep -q 'id="microphone" aria-pressed="false"' index.html
 grep -q 'id="voice-status" role="status" aria-live="polite"' index.html
+grep -q 'id="speech-progress" aria-label="Nedladdning av svensk röstmodell"' index.html
+grep -q 'id="speech-progress-value"' index.html
+grep -q 'MB hämtade' index.html
+grep -q 'loading-runtime-assets' piper-worker.js
+grep -q 'Röstmodellen är inläst' voice.js
 grep -q "window.GameVoice.createVoiceController" index.html
 grep -q "addVoiceButton(item, 'Testa ljudet'" index.html
 grep -q 'Jag förstår – starta mikrofonen' index.html
@@ -33,6 +45,25 @@ grep -q 'WebKit versions before Safari 27' voice.js
 grep -q "voiceIdentity: speakingNpc.voice_identity" index.html
 grep -q "role: 'narrator', voiceIdentity: 'neutral'" index.html
 grep -q 'COPY voice.js /usr/share/nginx/html/voice.js' Dockerfile
+grep -q 'COPY public/piper-runtime.js /usr/share/nginx/html/piper-runtime.js' Dockerfile
+grep -q 'COPY public/tts/piper-wasm-v1/' Dockerfile
+grep -q 'build:piper' .gitea/workflows/publish.yaml
+grep -q 'Piper' piper-runtime.js
+grep -q 'sv_SE-nst-medium' piper-worker.js
+grep -q "new Worker(workerUrl, {type: 'module'})" piper-runtime.js
+grep -q 'worker.js?v=' piper-runtime.js
+grep -q 'worker.onmessageerror' piper-runtime.js
+grep -q 'localPiperModelUrl' piper-worker.js
+grep -q 'trackDownloadProgress' piper-worker.js
+grep -q 'new ReadableStream' piper-download-progress.mjs
+grep -q 'createOnnxWasmPaths(self.location.origin)' piper-worker.js
+grep -q 'configureOnnxRuntime(onnxRuntime)' piper-worker.js
+grep -q 'numThreads = 1' piper-onnx-config.mjs
+grep -q '/static/piper-wasm-v1/onnx/' piper-onnx-config.mjs
+grep -q 'PIPER_MODEL_ORIGIN' piper-model-routing.mjs
+grep -q '/static/piper-wasm-v1/voices/' piper-model-routing.mjs
+grep -q 'ai-spel-static' README.md
+grep -q 'ATTRIBUTION.txt' index.html
 grep -q "SpeechRecognition || win.webkitSpeechRecognition" voice.js
 grep -q "submitMessage(text, 'voice')" index.html
 grep -q 'Spelets repliker läses alltid upp' index.html
@@ -67,6 +98,6 @@ if sed -n '/<section id="play"/,/^    <\/section>/p' index.html | grep '<button'
   exit 1
 fi
 
-node --test tests/voice.test.cjs
+node --test tests/*.test.cjs
 
 echo 'Frontend source checks passed.'

tests/piper-download-progress.test.cjs

@@ -0,0 +1,59 @@
+const assert = require('node:assert/strict');
+const test = require('node:test');
+
+test('model response progress forwards each downloaded chunk and preserves the response', async () => {
+  const {trackDownloadProgress} = await import('../piper-download-progress.mjs');
+  const source = new ReadableStream({
+    start(controller) {
+      controller.enqueue(new Uint8Array([1, 2]));
+      controller.enqueue(new Uint8Array([3, 4, 5]));
+      controller.close();
+    },
+  });
+  const response = new Response(source, {headers: {'content-length': '5'}});
+  const messages = [];
+  const tracked = trackDownloadProgress(response, {id: 7, postMessage: message => messages.push(message)});
+
+  assert.deepEqual([...new Uint8Array(await tracked.arrayBuffer())], [1, 2, 3, 4, 5]);
+  assert.deepEqual(messages.map(message => message.progress), [
+    {asset: 'model', loaded: 2, total: 5},
+    {asset: 'model', loaded: 5, total: 5},
+  ]);
+  assert.ok(messages.every(message => message.id === 7 && message.type === 'progress'));
+});
+
+test('model response progress works when content length is absent', async () => {
+  const {trackDownloadProgress} = await import('../piper-download-progress.mjs');
+  const source = new Response(new Uint8Array([1, 2, 3]));
+  const messages = [];
+  const tracked = trackDownloadProgress(source, {
+    id: 9,
+    asset: 'runtime',
+    file: 'runtime.wasm',
+    postMessage: message => messages.push(message),
+  });
+
+  assert.equal((await tracked.arrayBuffer()).byteLength, 3);
+  assert.deepEqual(messages
+    .map(message => message.progress)
+    .filter(progress => Number.isFinite(progress.loaded)),
+  [{asset: 'runtime', file: 'runtime.wasm', loaded: 3, total: 0}]);
+});
+
+test('runtime asset completion reports that initialization follows the download', async () => {
+  const {trackDownloadProgress} = await import('../piper-download-progress.mjs');
+  const response = new Response(new Uint8Array([1, 2]), {headers: {'content-length': '2'}});
+  const messages = [];
+  const tracked = trackDownloadProgress(response, {
+    id: 10,
+    asset: 'runtime',
+    file: 'ort-wasm-simd-threaded.wasm',
+    postMessage: message => messages.push(message),
+  });
+
+  await tracked.arrayBuffer();
+  assert.deepEqual(messages.at(-1).progress, {
+    stage: 'initializing-runtime',
+    file: 'ort-wasm-simd-threaded.wasm',
+  });
+});

tests/piper-model-routing.test.cjs

@@ -0,0 +1,23 @@
+const test = require('node:test');
+const assert = require('node:assert/strict');
+
+test('Piper model and config requests use the same-origin voice mirror', async () => {
+  const {localPiperModelUrl} = await import('../piper-model-routing.mjs');
+  const origin = 'https://ai-spel.k3s.k0.nu';
+  assert.equal(
+    localPiperModelUrl('https://huggingface.co/diffusionstudio/piper-voices/resolve/main/sv/sv_SE/nst/medium/sv_SE-nst-medium.onnx', origin),
+    'https://ai-spel.k3s.k0.nu/static/piper-wasm-v1/voices/sv/sv_SE/nst/medium/sv_SE-nst-medium.onnx',
+  );
+  assert.equal(
+    localPiperModelUrl('https://huggingface.co/diffusionstudio/piper-voices/resolve/main/sv/sv_SE/lisa/medium/sv_SE-lisa-medium.onnx.json', origin),
+    'https://ai-spel.k3s.k0.nu/static/piper-wasm-v1/voices/sv/sv_SE/lisa/medium/sv_SE-lisa-medium.onnx.json',
+  );
+});
+
+test('Piper model routing leaves unrelated URLs alone and rejects traversal paths', async () => {
+  const {localPiperModelUrl} = await import('../piper-model-routing.mjs');
+  const origin = 'https://ai-spel.k3s.k0.nu';
+  assert.equal(localPiperModelUrl('https://example.com/model.onnx', origin), null);
+  assert.equal(localPiperModelUrl('https://huggingface.co.evil.test/diffusionstudio/piper-voices/resolve/main/model.onnx', origin), null);
+  assert.equal(localPiperModelUrl('https://huggingface.co/diffusionstudio/piper-voices/resolve/main/../secret', origin), null);
+});

tests/piper-onnx-config.test.cjs

@@ -0,0 +1,23 @@
+const test = require('node:test');
+const assert = require('node:assert/strict');
+
+test('ONNX Runtime receives an absolute same-origin base URL', async () => {
+  const {createOnnxWasmPaths} = await import('../piper-onnx-config.mjs');
+  const wasmPaths = createOnnxWasmPaths('https://ai-spel.k3s.k0.nu');
+  assert.equal(wasmPaths, 'https://ai-spel.k3s.k0.nu/static/piper-wasm-v1/onnx/');
+  assert.equal(new URL('ort-wasm-simd-threaded.mjs', wasmPaths).href,
+    'https://ai-spel.k3s.k0.nu/static/piper-wasm-v1/onnx/ort-wasm-simd-threaded.mjs');
+});
+
+test('ONNX Runtime base URL rejects an invalid worker origin', async () => {
+  const {createOnnxWasmPaths} = await import('../piper-onnx-config.mjs');
+  assert.throws(() => createOnnxWasmPaths('undefined'), TypeError);
+});
+
+test('ONNX Runtime uses one thread and a bounded startup timeout', async () => {
+  const {configureOnnxRuntime} = await import('../piper-onnx-config.mjs');
+  const runtime = {env: {wasm: {numThreads: 0, initTimeout: 0}}};
+  configureOnnxRuntime(runtime);
+  assert.equal(runtime.env.wasm.numThreads, 1);
+  assert.equal(runtime.env.wasm.initTimeout, 60000);
+});

tests/piper-worker-format.test.cjs

@@ -0,0 +1,13 @@
+const test = require('node:test');
+const assert = require('node:assert/strict');
+const {readFile} = require('node:fs/promises');
+const {join} = require('node:path');
+
+test('Piper worker is built and started as an ES module', async () => {
+  const [buildScript, runtime] = await Promise.all([
+    readFile(join(__dirname, '..', 'scripts', 'build-piper.mjs'), 'utf8'),
+    readFile(join(__dirname, '..', 'piper-runtime.js'), 'utf8'),
+  ]);
+  assert.match(buildScript, /outfile: join\(workerRoot, 'piper-worker\.js'\),\s*bundle: true,\s*format: 'esm'/);
+  assert.match(runtime, /new Worker\(workerUrl, \{type: 'module'\}\)/);
+});

tests/voice.test.cjs

@@ -9,7 +9,7 @@ const apiWindow = {};
 vm.runInNewContext(source, {window: apiWindow, globalThis: apiWindow, Promise, String, Math, Object});
 const GameVoice = apiWindow.GameVoice;
 
-function makeHarness({supported = true, tts = true, onTranscript = () => Promise.resolve()} = {}) {
+function makeHarness({supported = true, tts = true, piper = false, onTranscript = () => Promise.resolve()} = {}) {
   const recognitions = [];
   const utterances = [];
   const states = [];
@@ -25,6 +25,18 @@ function makeHarness({supported = true, tts = true, onTranscript = () => Promise
   class Utterance {
     constructor(text) { this.text = text; utterances.push(this); }
   }
+  const audioSources = [];
+  const piperProgressCallbacks = [];
+  class AudioContext {
+    constructor() { this.state = 'running'; this.destination = {}; }
+    resume() { this.state = 'running'; return Promise.resolve(); }
+    decodeAudioData() { return Promise.resolve({duration: 1}); }
+    createBufferSource() {
+      const source = {playbackRate: {value: 1}, detune: {value: 0}, connect() {}, start() { this.started = true; }, stop() { this.stopped = true; }};
+      audioSources.push(source);
+      return source;
+    }
+  }
   const synthesis = tts ? {
     spoken: [], cancelled: 0,
     getVoices: () => [{name: 'Svensk', lang: 'sv-SE'}],
@@ -37,6 +49,11 @@ function makeHarness({supported = true, tts = true, onTranscript = () => Promise
     speechSynthesis: synthesis,
     SpeechSynthesisUtterance: tts ? Utterance : undefined,
     SpeechRecognition: supported ? Recognition : undefined,
+    AudioContext,
+    GamePiper: piper ? {synthesize: (_text, onProgress) => {
+      piperProgressCallbacks.push(onProgress);
+      return Promise.resolve({arrayBuffer: () => Promise.resolve(new ArrayBuffer(8))});
+    }} : undefined,
   };
   vm.runInNewContext(source, {window, globalThis: window, Promise, String, Math, Object});
   const controller = window.GameVoice.createVoiceController({
@@ -45,7 +62,7 @@ function makeHarness({supported = true, tts = true, onTranscript = () => Promise
     onTranscript,
   });
   return {
-    controller, recognitions, utterances, synthesis, states, timers,
+    controller, recognitions, utterances, synthesis, states, timers, audioSources, piperProgressCallbacks,
     runTimer(delay) {
       const match = [...timerDelays.entries()].find(([, value]) => value === delay);
       if (!match) throw new Error(`No timer found with delay ${delay}`);
@@ -223,6 +240,47 @@ test('narrator uses neutral pitch while character replies use their saved voice
   assert.ok(h.utterances[1].pitch < 1);
 });
 
+test('Piper WASM output uses the unlocked audio context and starts only after local synthesis', async () => {
+  const h = makeHarness({piper: true});
+  assert.equal(h.controller.activateFromUserGesture(), true);
+  assert.equal(h.controller.speak('Ett svar från Piper.', {role: 'narrator', voiceIdentity: 'neutral'}), true);
+  assert.equal(h.controller.getState(), 'QUEUED');
+  await new Promise(resolve => setImmediate(resolve));
+  assert.equal(h.audioSources.length, 1);
+  assert.equal(h.audioSources[0].started, true);
+  assert.equal(h.audioSources[0].detune.value, 0);
+  assert.equal(h.controller.getState(), 'SPEAKING');
+  h.audioSources[0].onended();
+  assert.equal(h.controller.getState(), 'IDLE');
+});
+
+test('Piper model download progress is reported as a bounded percentage', async () => {
+  const h = makeHarness({piper: true});
+  h.controller.activateFromUserGesture();
+  h.controller.speak('Ett svar från Piper.');
+  await new Promise(resolve => setImmediate(resolve));
+  h.piperProgressCallbacks[0]({stage: 'loading-model'});
+  assert.match(h.states.at(-1).message, /Ansluter till servern/);
+  h.piperProgressCallbacks[0]({asset: 'runtime', file: 'ort-wasm-simd-threaded.wasm', loaded: 5 * 1024 * 1024, total: 10 * 1024 * 1024});
+  assert.match(h.states.at(-1).message, /ort-wasm-simd-threaded\.wasm: 50 procent/);
+  h.piperProgressCallbacks[0]({loaded: 31_500_000, total: 63_000_000});
+  assert.equal(h.states.at(-1).state, 'PROCESSING');
+  assert.match(h.states.at(-1).message, /50 procent/);
+  h.piperProgressCallbacks[0]({loaded: 90_000_000, total: 63_000_000});
+  assert.match(h.states.at(-1).message, /100 procent/);
+  h.piperProgressCallbacks[0]({loaded: 10 * 1024 * 1024, total: 0});
+  assert.match(h.states.at(-1).message, /10 MB hämtade/);
+});
+
+test('Piper output keeps per-character pitch and rate stable', async () => {
+  const h = makeHarness({piper: true});
+  h.controller.activateFromUserGesture();
+  h.controller.speak('NPC-svar.', {voiceIdentity: 'masculine', characterId: 'npc-1'});
+  await new Promise(resolve => setImmediate(resolve));
+  assert.ok(h.audioSources[0].detune.value < 0);
+  assert.ok(h.audioSources[0].playbackRate.value < 1);
+});
+
 test('TTS and microphone are mutually exclusive', () => {
   const h = makeHarness();
   h.controller.update({mode: 'game-voice'});

voice.js

@@ -82,6 +82,9 @@
     let listeningTimer = null;
     let currentUtterance = null;
     let speechPrimed = false;
+    let piperAudioContext = null;
+    let piperSource = null;
+    let piperAudioUnlocked = false;
 
     function setState(next, message = '') {
       state = next;
@@ -95,19 +98,34 @@
       speechTimer = null;
       speechStartTimer = null;
       const wasQueued = currentUtterance !== null;
+      const wasPiper = currentUtterance?.kind === 'piper';
       currentUtterance = null;
       // WebKit versions before Safari 27 can discard a speak() queued in the
       // same turn as cancel(). Do not clear an already-empty native queue.
       if (wasQueued) {
+        if (wasPiper) {
+          try { piperSource?.stop(); } catch (_) { /* Already stopped. */ }
+          piperSource = null;
+        } else {
           try { win.speechSynthesis?.cancel(); } catch (_) { /* Best effort. */ }
           // cancel() also removes the silent user-gesture primer from the native
           // queue. A later reply must prime again from the next player gesture.
           speechPrimed = false;
         }
+      }
       if (!recognition) setState('IDLE');
     }
 
     function activateFromUserGesture() {
+      const AudioContext = win.AudioContext || win.webkitAudioContext;
+      if (win.GamePiper && AudioContext) {
+        try {
+          piperAudioContext ||= new AudioContext();
+          if (piperAudioContext.state === 'suspended') piperAudioContext.resume().catch(() => {});
+          piperAudioUnlocked = true;
+          return true;
+        } catch (_) { /* Fall through to the browser speech adapter. */ }
+      }
       if (!win.speechSynthesis || !win.SpeechSynthesisUtterance) return false;
       if (speechPrimed) return true;
       // iOS Safari requires speech output to be initiated by a user gesture.
@@ -211,7 +229,126 @@
       try { return win.speechSynthesis?.getVoices?.() || []; } catch (_) { return []; }
     }
 
+    function speakWithPiper(text, voiceOptions) {
+      const AudioContext = win.AudioContext || win.webkitAudioContext;
+      if (!AudioContext || !piperAudioUnlocked) return false;
+      stopListening();
+      if (currentUtterance) cancelSpeech();
+      const token = ++generation;
+      const playback = {kind: 'piper', token};
+      currentUtterance = playback;
+      setState('QUEUED', 'Förbereder svensk uppläsning. Första gången kan en röstmodell på cirka 63 MB behöva hämtas till enheten.');
+
+      if (speechTimer !== null) win.clearTimeout(speechTimer);
+      speechTimer = win.setTimeout(() => {
+        if (token !== generation) return;
+        generation += 1;
+        currentUtterance = null;
+        try { piperSource?.stop(); } catch (_) { /* Best effort. */ }
+        piperSource = null;
+        speechTimer = null;
+        setState('IDLE', 'Piper tog för lång tid på sig. Dialogen finns kvar som text. Tryck på Läs senaste repliken för att försöka igen.');
+      }, 180000);
+
+      let lastProgressPercent = -1;
+      let lastProgressMegabytes = -1;
+      let lastProgressResource = '';
+      const progress = event => {
+        if (token !== generation) return;
+        const resource = `${event?.asset || 'model'}:${event?.file || ''}`;
+        if (resource !== lastProgressResource) {
+          lastProgressResource = resource;
+          lastProgressPercent = -1;
+          lastProgressMegabytes = -1;
+        }
+        if (event?.asset === 'runtime' && Number.isFinite(event.loaded) && event.loaded >= 0) {
+          const file = /^[\w.-]+$/.test(event.file || '') ? event.file : 'WebAssembly-fil';
+          if (Number.isFinite(event.total) && event.total > 0) {
+            const percent = Math.max(0, Math.min(100, Math.floor((event.loaded / event.total) * 100)));
+            if (percent === lastProgressPercent) return;
+            lastProgressPercent = percent;
+            setState('PROCESSING', `Hämtar WebAssembly-filen ${file}: ${percent} procent.`);
+          } else {
+            const megabytes = Math.floor((event.loaded / (1024 * 1024)) * 10) / 10;
+            if (megabytes === lastProgressMegabytes) return;
+            lastProgressMegabytes = megabytes;
+            setState('PROCESSING', `Hämtar WebAssembly-filen ${file}: ${megabytes.toLocaleString('sv-SE')} MB hämtade.`);
+          }
+          return;
+        }
+        const stages = {
+          'loading-runtime': 'Laddar WebAssembly-motorn för svensk uppläsning.',
+          'loading-runtime-assets': `Hämtar WebAssembly-filen ${event?.file || 'från servern'}.`,
+          'reading-runtime-assets': `Läser in WebAssembly-filen ${event?.file || ''}.`,
+          'initializing-runtime': `Startar WebAssembly-motorn efter nedladdning av ${event?.file || 'filen'}.`,
+          'loading-model-info': 'Hämtar information om den svenska röstmodellen.',
+          'loading-model': 'Ansluter till servern för att hämta den svenska röstmodellen.',
+          'reading-model': 'Läser in den svenska röstmodellen.',
+          'model-ready': 'Röstmodellen är inläst. Skapar uppläsningen.',
+        };
+        if (stages[event?.stage]) {
+          setState('PROCESSING', stages[event.stage]);
+          return;
+        }
+        if (!Number.isFinite(event?.loaded) || event.loaded < 0) return;
+        if (Number.isFinite(event.total) && event.total > 0) {
+          const percent = Math.max(0, Math.min(100, Math.floor((event.loaded / event.total) * 100)));
+          if (percent === lastProgressPercent) return;
+          lastProgressPercent = percent;
+          setState('PROCESSING', `Hämtar svensk röstmodell till enheten: ${percent} procent.`);
+          return;
+        }
+        const megabytes = Math.floor((event.loaded / (1024 * 1024)) * 10) / 10;
+        if (megabytes === lastProgressMegabytes) return;
+        lastProgressMegabytes = megabytes;
+        setState('PROCESSING', `Hämtar svensk röstmodell till enheten: ${megabytes.toLocaleString('sv-SE')} MB hämtade.`);
+      };
+
+      Promise.resolve()
+        .then(() => win.GamePiper.synthesize(String(text), progress))
+        .then(async blob => {
+          if (token !== generation) return;
+          piperAudioContext ||= new AudioContext();
+          if (piperAudioContext.state === 'suspended') await piperAudioContext.resume();
+          const buffer = await piperAudioContext.decodeAudioData(await blob.arrayBuffer());
+          if (token !== generation) return;
+          const source = piperAudioContext.createBufferSource();
+          const profile = voiceOptions.characterId ? settings.speakerProfiles?.[voiceOptions.characterId] || {} : {};
+          const identity = characterVoiceProfile(voiceOptions.voiceIdentity, voiceOptions.characterId);
+          const narrator = voiceOptions.role === 'narrator';
+          const requestedRate = Number(voiceOptions.rate ?? profile.rate ?? settings.rate) || 1;
+          source.buffer = buffer;
+          source.playbackRate.value = Math.min(2, Math.max(0.5, requestedRate * (narrator || voiceOptions.rate != null || profile.rate != null ? 1 : identity.rate)));
+          const pitch = narrator ? 1 : Number(voiceOptions.pitch ?? profile.pitch ?? identity.pitch) || 1;
+          if (source.detune) source.detune.value = Math.min(600, Math.max(-600, (pitch - 1) * 1200));
+          source.connect(piperAudioContext.destination);
+          source.onended = () => {
+            if (token !== generation) return;
+            if (speechTimer !== null) win.clearTimeout(speechTimer);
+            speechTimer = null;
+            currentUtterance = null;
+            piperSource = null;
+            setState('IDLE');
+          };
+          piperSource = source;
+          source.start();
+          if (typeof voiceOptions.onStart === 'function') voiceOptions.onStart();
+          setState('SPEAKING', 'Läser upp dialogen med svensk röst.');
+        })
+        .catch(error => {
+          if (token !== generation) return;
+          if (speechTimer !== null) win.clearTimeout(speechTimer);
+          speechTimer = null;
+          currentUtterance = null;
+          piperSource = null;
+          generation += 1;
+          setState('IDLE', `Piper kunde inte skapa eller spela upp ljudet${error?.message ? `: ${error.message}` : '.'} Dialogen finns kvar som text. Tryck på Läs senaste repliken för att försöka igen.`);
+        });
+      return true;
+    }
+
     function speak(text, voiceOptions = {}) {
+      if (text && win.GamePiper?.synthesize && speakWithPiper(text, voiceOptions)) return true;
       if (!text || !win.speechSynthesis || !win.SpeechSynthesisUtterance) {
         setState('IDLE', 'Talsyntes stöds inte i den här webbläsaren. Dialogen finns kvar som text.');
         return false;