[auto-merge] Add desktop automation primitives to Hermes

Auto-merged by PR review bot: Add desktop automation primitives to Hermes

bin/deepdive_tts.py

@@ -152,17 +152,55 @@ class OpenAITTSAdapter:
         return mp3_path
 
 
+class EdgeTTSAdapter:
+    """Zero-cost TTS using Microsoft Edge neural voices (no API key required).
+
+    Requires: pip install edge-tts>=6.1.9
+    Voices: https://learn.microsoft.com/en-us/azure/ai-services/speech-service/language-support
+    """
+
+    DEFAULT_VOICE = "en-US-GuyNeural"
+
+    def __init__(self, config: TTSConfig):
+        self.config = config
+        self.voice = config.voice_id or self.DEFAULT_VOICE
+
+    def synthesize(self, text: str, output_path: Path) -> Path:
+        try:
+            import edge_tts
+        except ImportError:
+            raise RuntimeError("edge-tts not installed. Run: pip install edge-tts")
+
+        import asyncio
+
+        mp3_path = output_path.with_suffix(".mp3")
+
+        async def _run():
+            communicate = edge_tts.Communicate(text, self.voice)
+            await communicate.save(str(mp3_path))
+
+        asyncio.run(_run())
+        return mp3_path
+
+
 ADAPTERS = {
     "piper": PiperAdapter,
     "elevenlabs": ElevenLabsAdapter,
     "openai": OpenAITTSAdapter,
+    "edge-tts": EdgeTTSAdapter,
 }
 
 
 def get_provider_config() -> TTSConfig:
     """Load TTS configuration from environment."""
     provider = os.environ.get("DEEPDIVE_TTS_PROVIDER", "openai")
-    voice = os.environ.get("DEEPDIVE_TTS_VOICE", "alloy" if provider == "openai" else "matthew")
+    if provider == "openai":
+        default_voice = "alloy"
+    elif provider == "edge-tts":
+        default_voice = EdgeTTSAdapter.DEFAULT_VOICE
+    else:
+        default_voice = "matthew"
+    voice = os.environ.get("DEEPDIVE_TTS_VOICE", default_voice)
     
     return TTSConfig(
         provider=provider,

bin/night_watch.py

@@ -32,12 +32,14 @@ import importlib.util
 import json
 import logging
 import os
+import re
 import shutil
 import subprocess
 import sys
 import time
 from datetime import datetime, timezone
 from pathlib import Path
+from typing import Optional
 
 logging.basicConfig(
     level=logging.INFO,
@@ -212,6 +214,46 @@ def generate_report(date_str: str, checker_mod) -> str:
     return "\n".join(lines)
 
 
+# ── Voice memo ────────────────────────────────────────────────────────
+
+def _generate_voice_memo(report_text: str, date_str: str) -> Optional[str]:
+    """Generate an MP3 voice memo of the night watch report.
+
+    Returns the output path on success, or None if generation fails.
+    """
+    try:
+        import edge_tts
+    except ImportError:
+        logger.warning("edge-tts not installed; skipping voice memo. Run: pip install edge-tts")
+        return None
+
+    import asyncio
+
+    # Strip markdown formatting for cleaner speech
+    clean = report_text
+    clean = re.sub(r"#+\s*", "", clean)       # headings
+    clean = re.sub(r"\|", " ", clean)          # table pipes
+    clean = re.sub(r"\*+", "", clean)          # bold/italic markers
+    clean = re.sub(r"-{3,}", "", clean)        # horizontal rules
+    clean = re.sub(r"\s{2,}", " ", clean)      # collapse extra whitespace
+
+    output_dir = Path("/tmp/bezalel")
+    output_dir.mkdir(parents=True, exist_ok=True)
+    mp3_path = output_dir / f"night-watch-{date_str}.mp3"
+
+    try:
+        async def _run():
+            communicate = edge_tts.Communicate(clean.strip(), "en-US-GuyNeural")
+            await communicate.save(str(mp3_path))
+
+        asyncio.run(_run())
+        logger.info("Voice memo written to %s", mp3_path)
+        return str(mp3_path)
+    except Exception as exc:
+        logger.warning("Voice memo generation failed: %s", exc)
+        return None
+
+
 # ── Entry point ───────────────────────────────────────────────────────
 
 def main() -> None:
@@ -226,6 +268,10 @@ def main() -> None:
         "--dry-run", action="store_true",
         help="Print report to stdout instead of writing to disk",
     )
+    parser.add_argument(
+        "--voice-memo", action="store_true",
+        help="Generate an MP3 voice memo of the report using edge-tts (saved to /tmp/bezalel/)",
+    )
     args = parser.parse_args()
 
     date_str = args.date or datetime.now(timezone.utc).strftime("%Y-%m-%d")
@@ -242,6 +288,14 @@ def main() -> None:
     report_path.write_text(report_text)
     logger.info("Night Watch report written to %s", report_path)
 
+    if args.voice_memo:
+        try:
+            memo_path = _generate_voice_memo(report_text, date_str)
+            if memo_path:
+                logger.info("Voice memo: %s", memo_path)
+        except Exception as exc:
+            logger.warning("Voice memo failed (non-fatal): %s", exc)
+
 
 if __name__ == "__main__":
     main()

docker-compose.desktop.yml

@@ -0,0 +1,46 @@
+version: "3.9"
+
+# Sandboxed desktop environment for Hermes computer-use primitives.
+# Provides Xvfb (virtual framebuffer) + noVNC (browser-accessible VNC).
+#
+# Usage:
+#   docker compose -f docker-compose.desktop.yml up -d
+#   # Visit http://localhost:6080 to see the virtual desktop
+#
+#   docker compose -f docker-compose.desktop.yml run hermes-desktop \
+#       python -m nexus.computer_use_demo
+#
+#   docker compose -f docker-compose.desktop.yml down
+
+services:
+  hermes-desktop:
+    image: dorowu/ubuntu-desktop-lxde-vnc:focal
+    environment:
+      # Resolution for the virtual display
+      RESOLUTION: "1280x800"
+      # VNC password (change in production)
+      VNC_PASSWORD: "hermes"
+      # Disable HTTP password for development convenience
+      HTTP_PASSWORD: ""
+    ports:
+      # noVNC web interface
+      - "6080:80"
+      # Raw VNC port (optional)
+      - "5900:5900"
+    volumes:
+      # Mount repo into container so scripts are available
+      - .:/workspace
+      # Persist nexus runtime data (heartbeats, logs, evidence)
+      - nexus_data:/root/.nexus
+    working_dir: /workspace
+    shm_size: "256mb"
+    # Install Python deps on startup then keep container alive
+    command: >
+      bash -c "
+        pip install --quiet pyautogui Pillow &&
+        /startup.sh
+      "
+
+volumes:
+  nexus_data:
+    driver: local

docs/computer-use.md

@@ -0,0 +1,174 @@
+# Computer Use — Desktop Automation Primitives for Hermes
+
+Issue: [#1125](https://forge.alexanderwhitestone.com/Timmy_Foundation/the-nexus/issues/1125)
+
+## Overview
+
+`nexus/computer_use.py` adds desktop automation primitives to the Hermes fleet. Agents can take screenshots, click, type, and scroll — enough to drive a browser, validate a UI, or diagnose a failed workflow page visually.
+
+All actions are logged to a JSONL audit trail at `~/.nexus/computer_use_actions.jsonl`.
+
+---
+
+## Quick Start
+
+### Local (requires a real display or Xvfb)
+
+```bash
+# Install dependencies
+pip install pyautogui Pillow
+
+# Run the Phase 1 demo
+python -m nexus.computer_use_demo
+```
+
+### Sandboxed (Docker + Xvfb + noVNC)
+
+```bash
+docker compose -f docker-compose.desktop.yml up -d
+# Visit http://localhost:6080 in your browser to see the virtual desktop
+
+docker compose -f docker-compose.desktop.yml run hermes-desktop \
+    python -m nexus.computer_use_demo
+
+docker compose -f docker-compose.desktop.yml down
+```
+
+---
+
+## API Reference
+
+### `computer_screenshot(save_path=None, log_path=...)`
+
+Capture the current desktop.
+
+| Param | Type | Description |
+|-------|------|-------------|
+| `save_path` | `str \| None` | Path to save PNG. If `None`, returns base64 string. |
+| `log_path` | `Path` | Audit log file. |
+
+**Returns** `dict`:
+```json
+{
+  "ok": true,
+  "image_b64": "<base64 PNG or null>",
+  "saved_to": "<path or null>",
+  "error": null
+}
+```
+
+---
+
+### `computer_click(x, y, button="left", confirm=False, log_path=...)`
+
+Click the mouse at screen coordinates.
+
+| Param | Type | Description |
+|-------|------|-------------|
+| `x` | `int` | Horizontal coordinate |
+| `y` | `int` | Vertical coordinate |
+| `button` | `str` | `"left"` \| `"right"` \| `"middle"` |
+| `confirm` | `bool` | Required `True` for `right` / `middle` (poka-yoke) |
+
+**Returns** `dict`:
+```json
+{"ok": true, "error": null}
+```
+
+---
+
+### `computer_type(text, confirm=False, interval=0.02, log_path=...)`
+
+Type text using the keyboard.
+
+| Param | Type | Description |
+|-------|------|-------------|
+| `text` | `str` | Text to type |
+| `confirm` | `bool` | Required `True` when text contains a sensitive keyword |
+| `interval` | `float` | Delay between keystrokes (seconds) |
+
+**Sensitive keywords** (require `confirm=True`): `password`, `passwd`, `secret`, `token`, `api_key`, `apikey`, `key`, `auth`
+
+> Note: the actual `text` value is never written to the audit log — only its length and whether it was flagged as sensitive.
+
+**Returns** `dict`:
+```json
+{"ok": true, "error": null}
+```
+
+---
+
+### `computer_scroll(x, y, amount=3, log_path=...)`
+
+Scroll the mouse wheel at screen coordinates.
+
+| Param | Type | Description |
+|-------|------|-------------|
+| `x` | `int` | Horizontal coordinate |
+| `y` | `int` | Vertical coordinate |
+| `amount` | `int` | Scroll units. Positive = up, negative = down. |
+
+**Returns** `dict`:
+```json
+{"ok": true, "error": null}
+```
+
+---
+
+### `read_action_log(n=20, log_path=...)`
+
+Return the most recent `n` audit log entries, newest first.
+
+```python
+from nexus.computer_use import read_action_log
+
+for entry in read_action_log(n=5):
+    print(entry["ts"], entry["action"], entry["result"]["ok"])
+```
+
+---
+
+## Safety Model
+
+| Action | Safety gate |
+|--------|-------------|
+| `computer_click(button="right")` | Requires `confirm=True` |
+| `computer_click(button="middle")` | Requires `confirm=True` |
+| `computer_type` with sensitive text | Requires `confirm=True` |
+| Mouse to top-left corner | pyautogui FAILSAFE — aborts immediately |
+| All actions | Written to JSONL audit log with timestamp |
+| Headless environment | All tools degrade gracefully — return `ok=False` with error message |
+
+---
+
+## Phase Roadmap
+
+### Phase 1 — Environment & Primitives ✅
+- Sandboxed desktop via Xvfb + noVNC (`docker-compose.desktop.yml`)
+- `computer_screenshot`, `computer_click`, `computer_type`, `computer_scroll`
+- Poka-yoke safety checks on all destructive actions
+- JSONL audit log for all actions
+- Demo: baseline screenshot → open browser → navigate to Gitea → evidence screenshot
+- 32 unit tests, fully headless (pyautogui mocked)
+
+### Phase 2 — Tool Integration (planned)
+- Register tools in the Hermes tool registry
+- LLM-based planner loop using screenshots as context
+- Destructive action confirmation UI
+
+### Phase 3 — Use-Case Pilots (planned)
+- Pilot 1: Automated visual regression test for fleet dashboard
+- Pilot 2: Screenshot-based diagnosis of failed CI workflow page
+
+---
+
+## File Locations
+
+| File | Purpose |
+|------|---------|
+| `nexus/computer_use.py` | Core tool primitives |
+| `nexus/computer_use_demo.py` | Phase 1 end-to-end demo |
+| `tests/test_computer_use.py` | 32 unit tests |
+| `docker-compose.desktop.yml` | Sandboxed desktop container |
+| `~/.nexus/computer_use_actions.jsonl` | Runtime audit log |
+| `~/.nexus/computer_use_evidence/` | Screenshot evidence (demo output) |

docs/voice-output.md

@@ -0,0 +1,135 @@
+# Voice Output System
+
+## Overview
+
+The Nexus voice output system converts text reports and briefings into spoken audio.
+It supports multiple TTS providers with automatic fallback so that audio generation
+degrades gracefully when a provider is unavailable.
+
+Primary use cases:
+- **Deep Dive** daily briefings (`bin/deepdive_tts.py`)
+- **Night Watch** nightly reports (`bin/night_watch.py --voice-memo`)
+
+---
+
+## Available Providers
+
+### edge-tts (recommended default)
+
+- **Cost:** Zero — no API key, no account required
+- **Package:** `pip install edge-tts>=6.1.9`
+- **Default voice:** `en-US-GuyNeural`
+- **Output format:** MP3
+- **How it works:** Streams audio from Microsoft Edge's neural TTS service over HTTPS.
+  No local model download required.
+- **Available locales:** 100+ languages and locales. Full list:
+  https://learn.microsoft.com/en-us/azure/ai-services/speech-service/language-support
+
+Notable English voices:
+| Voice ID | Style |
+|---|---|
+| `en-US-GuyNeural` | Neutral male (default) |
+| `en-US-JennyNeural` | Warm female |
+| `en-US-AriaNeural` | Expressive female |
+| `en-GB-RyanNeural` | British male |
+
+### piper
+
+- **Cost:** Free, fully offline
+- **Package:** `pip install piper-tts` + model download (~65 MB)
+- **Model location:** `~/.local/share/piper/en_US-lessac-medium.onnx`
+- **Output format:** WAV → MP3 (requires `lame`)
+- **Sovereignty:** Fully local; no network calls after model download
+
+### elevenlabs
+
+- **Cost:** Usage-based (paid)
+- **Requirement:** `ELEVENLABS_API_KEY` environment variable
+- **Output format:** MP3
+- **Quality:** Highest quality of the three providers
+
+### openai
+
+- **Cost:** Usage-based (paid)
+- **Requirement:** `OPENAI_API_KEY` environment variable
+- **Output format:** MP3
+- **Default voice:** `alloy`
+
+---
+
+## Usage: deepdive_tts.py
+
+```bash
+# Use edge-tts (zero cost)
+DEEPDIVE_TTS_PROVIDER=edge-tts python bin/deepdive_tts.py --text "Good morning."
+
+# Specify a different Edge voice
+python bin/deepdive_tts.py --provider edge-tts --voice en-US-JennyNeural --text "Hello world."
+
+# Read from a file
+python bin/deepdive_tts.py --provider edge-tts --input-file /tmp/briefing.txt --output /tmp/briefing
+
+# Use OpenAI
+OPENAI_API_KEY=sk-... python bin/deepdive_tts.py --provider openai --voice nova --text "Hello."
+
+# Use ElevenLabs
+ELEVENLABS_API_KEY=... python bin/deepdive_tts.py --provider elevenlabs --voice rachel --text "Hello."
+
+# Use local Piper (offline)
+python bin/deepdive_tts.py --provider piper --text "Hello."
+```
+
+Provider and voice can also be set via environment variables:
+
+```bash
+export DEEPDIVE_TTS_PROVIDER=edge-tts
+export DEEPDIVE_TTS_VOICE=en-GB-RyanNeural
+python bin/deepdive_tts.py --text "Good evening."
+```
+
+---
+
+## Usage: Night Watch --voice-memo
+
+The `--voice-memo` flag causes Night Watch to generate an MP3 audio summary of the
+nightly report immediately after writing the markdown file.
+
+```bash
+python bin/night_watch.py --voice-memo
+```
+
+Output location: `/tmp/bezalel/night-watch-<YYYY-MM-DD>.mp3`
+
+The voice memo:
+- Strips markdown formatting (`#`, `|`, `*`, `---`) for cleaner speech
+- Uses `edge-tts` with the `en-US-GuyNeural` voice
+- Is non-fatal: if TTS fails, the markdown report is still written normally
+
+Example crontab with voice memo:
+
+```cron
+0 3 * * * cd /path/to/the-nexus && python bin/night_watch.py --voice-memo \
+    >> /var/log/bezalel/night-watch.log 2>&1
+```
+
+---
+
+## Fallback Chain
+
+`HybridTTS` (used by `tts_engine.py`) attempts providers in this order:
+
+1. **edge-tts** — zero cost, no API key
+2. **piper** — offline local model (if model file present)
+3. **elevenlabs** — cloud fallback (if `ELEVENLABS_API_KEY` set)
+
+If `prefer_cloud=True` is passed, the order becomes: elevenlabs → piper.
+
+---
+
+## Phase 3 TODO
+
+Evaluate **fish-speech** and **F5-TTS** as fully offline, sovereign alternatives
+with higher voice quality than Piper. These models run locally with no network
+dependency whatsoever, providing complete independence from Microsoft's Edge service.
+
+Tracking: to be filed as a follow-up to issue #830.

intelligence/deepdive/tts_engine.py

@@ -157,14 +157,45 @@ class ElevenLabsTTS:
         return output_path
 
 
+class EdgeTTS:
+    """Zero-cost TTS using Microsoft Edge neural voices (no API key required).
+
+    Requires: pip install edge-tts>=6.1.9
+    """
+
+    DEFAULT_VOICE = "en-US-GuyNeural"
+
+    def __init__(self, voice: str = None):
+        self.voice = voice or self.DEFAULT_VOICE
+
+    def synthesize(self, text: str, output_path: str) -> str:
+        """Convert text to MP3 via Edge TTS."""
+        try:
+            import edge_tts
+        except ImportError:
+            raise RuntimeError("edge-tts not installed. Run: pip install edge-tts")
+
+        import asyncio
+        from pathlib import Path
+
+        mp3_path = str(Path(output_path).with_suffix(".mp3"))
+
+        async def _run():
+            communicate = edge_tts.Communicate(text, self.voice)
+            await communicate.save(mp3_path)
+
+        asyncio.run(_run())
+        return mp3_path
+
+
 class HybridTTS:
     """TTS with sovereign primary, cloud fallback."""
-    
+
     def __init__(self, prefer_cloud: bool = False):
         self.primary = None
         self.fallback = None
         self.prefer_cloud = prefer_cloud
-        
+
         # Try preferred engine
         if prefer_cloud:
             self._init_elevenlabs()
@@ -172,21 +203,29 @@ class HybridTTS:
                 self._init_piper()
         else:
             self._init_piper()
+            if not self.primary:
+                self._init_edge_tts()
             if not self.primary:
                 self._init_elevenlabs()
-    
+
     def _init_piper(self):
         try:
             self.primary = PiperTTS()
         except Exception as e:
             print(f"Piper init failed: {e}")
-    
+
+    def _init_edge_tts(self):
+        try:
+            self.primary = EdgeTTS()
+        except Exception as e:
+            print(f"EdgeTTS init failed: {e}")
+
     def _init_elevenlabs(self):
         try:
             self.primary = ElevenLabsTTS()
         except Exception as e:
             print(f"ElevenLabs init failed: {e}")
-    
+
     def synthesize(self, text: str, output_path: str) -> str:
         """Synthesize with fallback."""
         if self.primary:
@@ -194,7 +233,7 @@ class HybridTTS:
                 return self.primary.synthesize(text, output_path)
             except Exception as e:
                 print(f"Primary failed: {e}")
-        
+
         raise RuntimeError("No TTS engine available")
 
 

nexus/computer_use.py

@@ -0,0 +1,313 @@
+"""
+Hermes Desktop Automation Primitives — Computer Use (#1125)
+
+Provides sandboxed desktop control tools for Hermes agents:
+  - computer_screenshot()   — capture current desktop
+  - computer_click()        — mouse click with poka-yoke on non-primary buttons
+  - computer_type()         — keyboard input with poka-yoke on sensitive text
+  - computer_scroll()       — scroll wheel action
+  - read_action_log()       — inspect recent action audit trail
+
+All actions are logged to a JSONL audit file.
+pyautogui.FAILSAFE is enabled globally — move mouse to top-left corner to abort.
+
+Designed to degrade gracefully when no display is available (headless CI).
+"""
+
+from __future__ import annotations
+
+import base64
+import io
+import json
+import logging
+import os
+import time
+from pathlib import Path
+from typing import Optional
+
+logger = logging.getLogger(__name__)
+
+# ---------------------------------------------------------------------------
+# Safety globals
+# ---------------------------------------------------------------------------
+
+# Poka-yoke: require confirmation for dangerous inputs
+_SENSITIVE_KEYWORDS = frozenset(
+    ["password", "passwd", "secret", "token", "api_key", "apikey", "key", "auth"]
+)
+
+# Destructive mouse buttons (non-primary)
+_DANGEROUS_BUTTONS = frozenset(["right", "middle"])
+
+# Default log location
+DEFAULT_ACTION_LOG = Path.home() / ".nexus" / "computer_use_actions.jsonl"
+
+# ---------------------------------------------------------------------------
+# Lazy pyautogui import — fails gracefully in headless environments
+# ---------------------------------------------------------------------------
+
+_PYAUTOGUI_AVAILABLE = False
+_pyautogui = None
+
+
+def _get_pyautogui():
+    """Return pyautogui, enabling FAILSAFE. Returns None if unavailable."""
+    global _pyautogui, _PYAUTOGUI_AVAILABLE
+    if _pyautogui is not None:
+        return _pyautogui
+    try:
+        import pyautogui  # type: ignore
+
+        pyautogui.FAILSAFE = True
+        pyautogui.PAUSE = 0.05  # small delay between actions
+        _pyautogui = pyautogui
+        _PYAUTOGUI_AVAILABLE = True
+        return _pyautogui
+    except Exception:
+        logger.warning("pyautogui unavailable — computer_use running in stub mode")
+        return None
+
+
+def _get_pil():
+    """Return PIL Image module or None."""
+    try:
+        from PIL import Image  # type: ignore
+
+        return Image
+    except ImportError:
+        return None
+
+
+# ---------------------------------------------------------------------------
+# Audit log
+# ---------------------------------------------------------------------------
+
+
+def _log_action(action: str, params: dict, result: dict, log_path: Path = DEFAULT_ACTION_LOG):
+    """Append one action record to the JSONL audit log."""
+    log_path.parent.mkdir(parents=True, exist_ok=True)
+    record = {
+        "ts": time.strftime("%Y-%m-%dT%H:%M:%S"),
+        "action": action,
+        "params": params,
+        "result": result,
+    }
+    with open(log_path, "a") as fh:
+        fh.write(json.dumps(record) + "\n")
+
+
+# ---------------------------------------------------------------------------
+# Public tool API
+# ---------------------------------------------------------------------------
+
+
+def computer_screenshot(
+    save_path: Optional[str] = None,
+    log_path: Path = DEFAULT_ACTION_LOG,
+) -> dict:
+    """Capture a screenshot of the current desktop.
+
+    Args:
+        save_path: Optional file path to save the PNG. If omitted the image
+                   is returned as a base64-encoded string.
+        log_path:  Audit log file (default ~/.nexus/computer_use_actions.jsonl).
+
+    Returns:
+        dict with keys:
+          - ok (bool)
+          - image_b64 (str | None) — base64 PNG when save_path is None
+          - saved_to (str | None)  — path when save_path was given
+          - error (str | None)     — human-readable error if ok=False
+    """
+    pag = _get_pyautogui()
+    params = {"save_path": save_path}
+
+    if pag is None:
+        result = {"ok": False, "image_b64": None, "saved_to": None, "error": "pyautogui unavailable"}
+        _log_action("screenshot", params, result, log_path)
+        return result
+
+    try:
+        screenshot = pag.screenshot()
+        if save_path:
+            screenshot.save(save_path)
+            result = {"ok": True, "image_b64": None, "saved_to": save_path, "error": None}
+        else:
+            buf = io.BytesIO()
+            screenshot.save(buf, format="PNG")
+            b64 = base64.b64encode(buf.getvalue()).decode()
+            result = {"ok": True, "image_b64": b64, "saved_to": None, "error": None}
+    except Exception as exc:
+        result = {"ok": False, "image_b64": None, "saved_to": None, "error": str(exc)}
+
+    _log_action("screenshot", params, {k: v for k, v in result.items() if k != "image_b64"}, log_path)
+    return result
+
+
+def computer_click(
+    x: int,
+    y: int,
+    button: str = "left",
+    confirm: bool = False,
+    log_path: Path = DEFAULT_ACTION_LOG,
+) -> dict:
+    """Click the mouse at screen coordinates (x, y).
+
+    Poka-yoke: right/middle clicks require confirm=True.
+
+    Args:
+        x:       Horizontal screen coordinate.
+        y:       Vertical screen coordinate.
+        button:  "left" | "right" | "middle"
+        confirm: Must be True for non-left buttons.
+        log_path: Audit log file.
+
+    Returns:
+        dict with keys: ok, error
+    """
+    params = {"x": x, "y": y, "button": button, "confirm": confirm}
+
+    if button in _DANGEROUS_BUTTONS and not confirm:
+        result = {
+            "ok": False,
+            "error": (
+                f"button={button!r} requires confirm=True (poka-yoke). "
+                "Pass confirm=True only after verifying this action is intentional."
+            ),
+        }
+        _log_action("click", params, result, log_path)
+        return result
+
+    if button not in ("left", "right", "middle"):
+        result = {"ok": False, "error": f"Unknown button {button!r}. Use 'left', 'right', or 'middle'."}
+        _log_action("click", params, result, log_path)
+        return result
+
+    pag = _get_pyautogui()
+    if pag is None:
+        result = {"ok": False, "error": "pyautogui unavailable"}
+        _log_action("click", params, result, log_path)
+        return result
+
+    try:
+        pag.click(x, y, button=button)
+        result = {"ok": True, "error": None}
+    except Exception as exc:
+        result = {"ok": False, "error": str(exc)}
+
+    _log_action("click", params, result, log_path)
+    return result
+
+
+def computer_type(
+    text: str,
+    confirm: bool = False,
+    interval: float = 0.02,
+    log_path: Path = DEFAULT_ACTION_LOG,
+) -> dict:
+    """Type text using the keyboard.
+
+    Poka-yoke: if *text* contains a sensitive keyword (password, token, key…)
+    confirm=True is required. The actual text value is never written to the
+    audit log.
+
+    Args:
+        text:     The string to type.
+        confirm:  Must be True when the text looks sensitive.
+        interval: Delay between keystrokes (seconds).
+        log_path: Audit log file.
+
+    Returns:
+        dict with keys: ok, error
+    """
+    lower = text.lower()
+    is_sensitive = any(kw in lower for kw in _SENSITIVE_KEYWORDS)
+    params = {"length": len(text), "is_sensitive": is_sensitive, "confirm": confirm}
+
+    if is_sensitive and not confirm:
+        result = {
+            "ok": False,
+            "error": (
+                "Text contains sensitive keyword. Pass confirm=True to proceed. "
+                "Ensure no secrets are being typed into unintended windows."
+            ),
+        }
+        _log_action("type", params, result, log_path)
+        return result
+
+    pag = _get_pyautogui()
+    if pag is None:
+        result = {"ok": False, "error": "pyautogui unavailable"}
+        _log_action("type", params, result, log_path)
+        return result
+
+    try:
+        pag.typewrite(text, interval=interval)
+        result = {"ok": True, "error": None}
+    except Exception as exc:
+        result = {"ok": False, "error": str(exc)}
+
+    _log_action("type", params, result, log_path)
+    return result
+
+
+def computer_scroll(
+    x: int,
+    y: int,
+    amount: int = 3,
+    log_path: Path = DEFAULT_ACTION_LOG,
+) -> dict:
+    """Scroll the mouse wheel at screen coordinates (x, y).
+
+    Args:
+        x:       Horizontal screen coordinate.
+        y:       Vertical screen coordinate.
+        amount:  Number of scroll units. Positive = scroll up, negative = down.
+        log_path: Audit log file.
+
+    Returns:
+        dict with keys: ok, error
+    """
+    params = {"x": x, "y": y, "amount": amount}
+    pag = _get_pyautogui()
+
+    if pag is None:
+        result = {"ok": False, "error": "pyautogui unavailable"}
+        _log_action("scroll", params, result, log_path)
+        return result
+
+    try:
+        pag.scroll(amount, x=x, y=y)
+        result = {"ok": True, "error": None}
+    except Exception as exc:
+        result = {"ok": False, "error": str(exc)}
+
+    _log_action("scroll", params, result, log_path)
+    return result
+
+
+def read_action_log(
+    n: int = 20,
+    log_path: Path = DEFAULT_ACTION_LOG,
+) -> list[dict]:
+    """Return the most recent *n* action records from the audit log.
+
+    Args:
+        n:        Maximum number of records to return.
+        log_path: Audit log file.
+
+    Returns:
+        List of action dicts, newest first.
+    """
+    if not log_path.exists():
+        return []
+    records: list[dict] = []
+    with open(log_path) as fh:
+        for line in fh:
+            line = line.strip()
+            if line:
+                try:
+                    records.append(json.loads(line))
+                except json.JSONDecodeError:
+                    pass
+    return list(reversed(records[-n:]))

nexus/computer_use_demo.py

@@ -0,0 +1,118 @@
+"""
+Phase 1 Demo — Desktop Automation via Hermes (#1125)
+
+Demonstrates the computer_use primitives end-to-end:
+  1. Take a baseline screenshot
+  2. Open a browser and navigate to the Gitea forge
+  3. Take an evidence screenshot
+
+Run inside a desktop session (Xvfb or real display):
+
+    python -m nexus.computer_use_demo
+
+Or via Docker:
+
+    docker compose -f docker-compose.desktop.yml run hermes-desktop \
+        python -m nexus.computer_use_demo
+"""
+
+from __future__ import annotations
+
+import logging
+import sys
+import time
+from pathlib import Path
+
+from nexus.computer_use import (
+    computer_click,
+    computer_screenshot,
+    computer_type,
+    read_action_log,
+)
+
+logging.basicConfig(level=logging.INFO, format="%(asctime)s  %(levelname)s  %(message)s")
+log = logging.getLogger(__name__)
+
+GITEA_URL = "https://forge.alexanderwhitestone.com"
+EVIDENCE_DIR = Path.home() / ".nexus" / "computer_use_evidence"
+
+
+def run_demo() -> bool:
+    """Execute the Phase 1 demo. Returns True on success."""
+    EVIDENCE_DIR.mkdir(parents=True, exist_ok=True)
+    log.info("=== Phase 1 Computer-Use Demo ===")
+
+    # --- Step 1: baseline screenshot ---
+    baseline = EVIDENCE_DIR / "01_baseline.png"
+    log.info("Step 1: capturing baseline screenshot → %s", baseline)
+    result = computer_screenshot(save_path=str(baseline))
+    if not result["ok"]:
+        log.error("Baseline screenshot failed: %s", result["error"])
+        return False
+    log.info("  ✓ baseline saved")
+
+    # --- Step 2: open browser ---
+    log.info("Step 2: opening browser")
+    try:
+        import subprocess
+        # Use xdg-open / open depending on platform; fallback to chromium
+        for cmd in (
+            ["xdg-open", GITEA_URL],
+            ["chromium-browser", "--no-sandbox", GITEA_URL],
+            ["chromium", "--no-sandbox", GITEA_URL],
+            ["google-chrome", "--no-sandbox", GITEA_URL],
+            ["open", GITEA_URL],  # macOS
+        ):
+            try:
+                subprocess.Popen(cmd, stderr=subprocess.DEVNULL, stdout=subprocess.DEVNULL)
+                log.info("  ✓ browser opened with: %s", cmd[0])
+                break
+            except FileNotFoundError:
+                continue
+        else:
+            log.warning("  ⚠ no browser found — skipping open step")
+    except Exception as exc:
+        log.warning("  ⚠ could not open browser: %s", exc)
+
+    # Give the browser time to load
+    time.sleep(3)
+
+    # --- Step 3: click address bar and navigate (best-effort) ---
+    log.info("Step 3: attempting to type URL in browser address bar (best-effort)")
+    try:
+        import pyautogui  # type: ignore
+
+        # Common shortcut to focus address bar
+        pyautogui.hotkey("ctrl", "l")
+        time.sleep(0.3)
+        result_type = computer_type(GITEA_URL)
+        if result_type["ok"]:
+            pyautogui.press("enter")
+            time.sleep(2)
+            log.info("  ✓ URL typed")
+        else:
+            log.warning("  ⚠ type failed: %s", result_type["error"])
+    except ImportError:
+        log.warning("  ⚠ pyautogui not available — skipping URL type step")
+
+    # --- Step 4: evidence screenshot ---
+    evidence = EVIDENCE_DIR / "02_gitea.png"
+    log.info("Step 4: capturing evidence screenshot → %s", evidence)
+    result = computer_screenshot(save_path=str(evidence))
+    if not result["ok"]:
+        log.error("Evidence screenshot failed: %s", result["error"])
+        return False
+    log.info("  ✓ evidence saved")
+
+    # --- Step 5: summary ---
+    log.info("Step 5: recent action log")
+    for entry in read_action_log(n=10):
+        log.info("  %s  %s  ok=%s", entry["ts"], entry["action"], entry["result"].get("ok"))
+
+    log.info("=== Demo complete — evidence in %s ===", EVIDENCE_DIR)
+    return True
+
+
+if __name__ == "__main__":
+    success = run_demo()
+    sys.exit(0 if success else 1)

requirements.txt

@@ -1,3 +1,4 @@
 pytest>=7.0
 pytest-asyncio>=0.21.0
 pyyaml>=6.0
+edge-tts>=6.1.9

tests/test_computer_use.py

@@ -0,0 +1,362 @@
+"""
+Tests for nexus.computer_use — Desktop Automation Primitives (#1125)
+
+All tests run fully headless: pyautogui is mocked throughout.
+No display is required.
+"""
+
+from __future__ import annotations
+
+import json
+import sys
+from pathlib import Path
+from unittest.mock import MagicMock, patch, call
+
+import pytest
+
+sys.path.insert(0, str(Path(__file__).parent.parent))
+
+from nexus.computer_use import (
+    _DANGEROUS_BUTTONS,
+    _SENSITIVE_KEYWORDS,
+    computer_click,
+    computer_screenshot,
+    computer_scroll,
+    computer_type,
+    read_action_log,
+)
+
+
+# ---------------------------------------------------------------------------
+# Helpers / fixtures
+# ---------------------------------------------------------------------------
+
+
+@pytest.fixture
+def tmp_log(tmp_path):
+    """Return a temporary JSONL audit log path."""
+    return tmp_path / "actions.jsonl"
+
+
+def _last_log_entry(log_path: Path) -> dict:
+    lines = [l.strip() for l in log_path.read_text().splitlines() if l.strip()]
+    return json.loads(lines[-1])
+
+
+def _make_mock_pag(screenshot_raises=None):
+    """Build a minimal pyautogui mock."""
+    mock = MagicMock()
+    mock.FAILSAFE = True
+    mock.PAUSE = 0.05
+    if screenshot_raises:
+        mock.screenshot.side_effect = screenshot_raises
+    else:
+        img_mock = MagicMock()
+        img_mock.save = MagicMock()
+        mock.screenshot.return_value = img_mock
+    return mock
+
+
+# ---------------------------------------------------------------------------
+# computer_screenshot
+# ---------------------------------------------------------------------------
+
+
+class TestComputerScreenshot:
+    def test_returns_b64_when_no_save_path(self, tmp_log):
+        mock_pag = _make_mock_pag()
+        # Make save() write fake PNG bytes
+        import io
+        buf = io.BytesIO(b"\x89PNG\r\n\x1a\n" + b"\x00" * 20)
+
+        def fake_save(obj, format=None):
+            obj.write(buf.getvalue())
+
+        mock_pag.screenshot.return_value.save = MagicMock(side_effect=fake_save)
+
+        with patch("nexus.computer_use._get_pyautogui", return_value=mock_pag):
+            result = computer_screenshot(log_path=tmp_log)
+
+        assert result["ok"] is True
+        assert result["image_b64"] is not None
+        assert result["saved_to"] is None
+        assert result["error"] is None
+
+    def test_saves_to_path(self, tmp_log, tmp_path):
+        mock_pag = _make_mock_pag()
+        out_png = tmp_path / "shot.png"
+
+        with patch("nexus.computer_use._get_pyautogui", return_value=mock_pag):
+            result = computer_screenshot(save_path=str(out_png), log_path=tmp_log)
+
+        assert result["ok"] is True
+        assert result["saved_to"] == str(out_png)
+        assert result["image_b64"] is None
+        mock_pag.screenshot.return_value.save.assert_called_once_with(str(out_png))
+
+    def test_logs_action(self, tmp_log):
+        mock_pag = _make_mock_pag()
+        with patch("nexus.computer_use._get_pyautogui", return_value=mock_pag):
+            computer_screenshot(log_path=tmp_log)
+
+        entry = _last_log_entry(tmp_log)
+        assert entry["action"] == "screenshot"
+        assert "ts" in entry
+
+    def test_returns_error_when_headless(self, tmp_log):
+        with patch("nexus.computer_use._get_pyautogui", return_value=None):
+            result = computer_screenshot(log_path=tmp_log)
+
+        assert result["ok"] is False
+        assert "unavailable" in result["error"]
+
+    def test_handles_screenshot_exception(self, tmp_log):
+        mock_pag = _make_mock_pag(screenshot_raises=RuntimeError("display error"))
+        with patch("nexus.computer_use._get_pyautogui", return_value=mock_pag):
+            result = computer_screenshot(log_path=tmp_log)
+
+        assert result["ok"] is False
+        assert "display error" in result["error"]
+
+    def test_image_b64_not_written_to_log(self, tmp_log):
+        """The (potentially huge) base64 blob must NOT appear in the audit log."""
+        mock_pag = _make_mock_pag()
+        with patch("nexus.computer_use._get_pyautogui", return_value=mock_pag):
+            computer_screenshot(log_path=tmp_log)
+
+        raw = tmp_log.read_text()
+        assert "image_b64" not in raw
+
+
+# ---------------------------------------------------------------------------
+# computer_click
+# ---------------------------------------------------------------------------
+
+
+class TestComputerClick:
+    def test_left_click_succeeds(self, tmp_log):
+        mock_pag = _make_mock_pag()
+        with patch("nexus.computer_use._get_pyautogui", return_value=mock_pag):
+            result = computer_click(100, 200, log_path=tmp_log)
+
+        assert result["ok"] is True
+        mock_pag.click.assert_called_once_with(100, 200, button="left")
+
+    def test_right_click_blocked_without_confirm(self, tmp_log):
+        mock_pag = _make_mock_pag()
+        with patch("nexus.computer_use._get_pyautogui", return_value=mock_pag):
+            result = computer_click(100, 200, button="right", log_path=tmp_log)
+
+        assert result["ok"] is False
+        assert "confirm=True" in result["error"]
+        mock_pag.click.assert_not_called()
+
+    def test_right_click_allowed_with_confirm(self, tmp_log):
+        mock_pag = _make_mock_pag()
+        with patch("nexus.computer_use._get_pyautogui", return_value=mock_pag):
+            result = computer_click(100, 200, button="right", confirm=True, log_path=tmp_log)
+
+        assert result["ok"] is True
+        mock_pag.click.assert_called_once_with(100, 200, button="right")
+
+    def test_middle_click_blocked_without_confirm(self, tmp_log):
+        mock_pag = _make_mock_pag()
+        with patch("nexus.computer_use._get_pyautogui", return_value=mock_pag):
+            result = computer_click(50, 50, button="middle", log_path=tmp_log)
+
+        assert result["ok"] is False
+
+    def test_middle_click_allowed_with_confirm(self, tmp_log):
+        mock_pag = _make_mock_pag()
+        with patch("nexus.computer_use._get_pyautogui", return_value=mock_pag):
+            result = computer_click(50, 50, button="middle", confirm=True, log_path=tmp_log)
+
+        assert result["ok"] is True
+
+    def test_unknown_button_rejected(self, tmp_log):
+        mock_pag = _make_mock_pag()
+        with patch("nexus.computer_use._get_pyautogui", return_value=mock_pag):
+            result = computer_click(0, 0, button="turbo", log_path=tmp_log)
+
+        assert result["ok"] is False
+        assert "Unknown button" in result["error"]
+
+    def test_logs_click_action(self, tmp_log):
+        mock_pag = _make_mock_pag()
+        with patch("nexus.computer_use._get_pyautogui", return_value=mock_pag):
+            computer_click(10, 20, log_path=tmp_log)
+
+        entry = _last_log_entry(tmp_log)
+        assert entry["action"] == "click"
+        assert entry["params"]["x"] == 10
+        assert entry["params"]["y"] == 20
+
+    def test_returns_error_when_headless(self, tmp_log):
+        with patch("nexus.computer_use._get_pyautogui", return_value=None):
+            result = computer_click(0, 0, log_path=tmp_log)
+
+        assert result["ok"] is False
+
+    def test_handles_click_exception(self, tmp_log):
+        mock_pag = _make_mock_pag()
+        mock_pag.click.side_effect = Exception("out of bounds")
+        with patch("nexus.computer_use._get_pyautogui", return_value=mock_pag):
+            result = computer_click(99999, 99999, log_path=tmp_log)
+
+        assert result["ok"] is False
+        assert "out of bounds" in result["error"]
+
+
+# ---------------------------------------------------------------------------
+# computer_type
+# ---------------------------------------------------------------------------
+
+
+class TestComputerType:
+    def test_plain_text_succeeds(self, tmp_log):
+        mock_pag = _make_mock_pag()
+        with patch("nexus.computer_use._get_pyautogui", return_value=mock_pag):
+            result = computer_type("hello world", log_path=tmp_log)
+
+        assert result["ok"] is True
+        mock_pag.typewrite.assert_called_once_with("hello world", interval=0.02)
+
+    def test_sensitive_text_blocked_without_confirm(self, tmp_log):
+        mock_pag = _make_mock_pag()
+        with patch("nexus.computer_use._get_pyautogui", return_value=mock_pag):
+            result = computer_type("mypassword123", log_path=tmp_log)
+
+        assert result["ok"] is False
+        assert "confirm=True" in result["error"]
+        mock_pag.typewrite.assert_not_called()
+
+    def test_sensitive_text_allowed_with_confirm(self, tmp_log):
+        mock_pag = _make_mock_pag()
+        with patch("nexus.computer_use._get_pyautogui", return_value=mock_pag):
+            result = computer_type("mypassword123", confirm=True, log_path=tmp_log)
+
+        assert result["ok"] is True
+
+    def test_sensitive_keywords_all_blocked(self, tmp_log):
+        mock_pag = _make_mock_pag()
+        for keyword in _SENSITIVE_KEYWORDS:
+            with patch("nexus.computer_use._get_pyautogui", return_value=mock_pag):
+                result = computer_type(f"my{keyword}value", log_path=tmp_log)
+            assert result["ok"] is False, f"keyword {keyword!r} should be blocked"
+
+    def test_text_not_logged(self, tmp_log):
+        """Actual typed text must NOT appear in the audit log."""
+        mock_pag = _make_mock_pag()
+        secret = "super_secret_value_xyz"
+        with patch("nexus.computer_use._get_pyautogui", return_value=mock_pag):
+            computer_type(secret, confirm=True, log_path=tmp_log)
+
+        raw = tmp_log.read_text()
+        assert secret not in raw
+
+    def test_logs_length_not_content(self, tmp_log):
+        mock_pag = _make_mock_pag()
+        with patch("nexus.computer_use._get_pyautogui", return_value=mock_pag):
+            computer_type("hello", log_path=tmp_log)
+
+        entry = _last_log_entry(tmp_log)
+        assert entry["params"]["length"] == 5
+
+    def test_returns_error_when_headless(self, tmp_log):
+        with patch("nexus.computer_use._get_pyautogui", return_value=None):
+            result = computer_type("abc", log_path=tmp_log)
+
+        assert result["ok"] is False
+
+    def test_handles_type_exception(self, tmp_log):
+        mock_pag = _make_mock_pag()
+        mock_pag.typewrite.side_effect = Exception("keyboard error")
+        with patch("nexus.computer_use._get_pyautogui", return_value=mock_pag):
+            result = computer_type("hello", log_path=tmp_log)
+
+        assert result["ok"] is False
+        assert "keyboard error" in result["error"]
+
+
+# ---------------------------------------------------------------------------
+# computer_scroll
+# ---------------------------------------------------------------------------
+
+
+class TestComputerScroll:
+    def test_scroll_up(self, tmp_log):
+        mock_pag = _make_mock_pag()
+        with patch("nexus.computer_use._get_pyautogui", return_value=mock_pag):
+            result = computer_scroll(400, 300, amount=5, log_path=tmp_log)
+
+        assert result["ok"] is True
+        mock_pag.scroll.assert_called_once_with(5, x=400, y=300)
+
+    def test_scroll_down_negative(self, tmp_log):
+        mock_pag = _make_mock_pag()
+        with patch("nexus.computer_use._get_pyautogui", return_value=mock_pag):
+            result = computer_scroll(400, 300, amount=-3, log_path=tmp_log)
+
+        assert result["ok"] is True
+        mock_pag.scroll.assert_called_once_with(-3, x=400, y=300)
+
+    def test_logs_scroll_action(self, tmp_log):
+        mock_pag = _make_mock_pag()
+        with patch("nexus.computer_use._get_pyautogui", return_value=mock_pag):
+            computer_scroll(10, 20, amount=2, log_path=tmp_log)
+
+        entry = _last_log_entry(tmp_log)
+        assert entry["action"] == "scroll"
+        assert entry["params"]["amount"] == 2
+
+    def test_returns_error_when_headless(self, tmp_log):
+        with patch("nexus.computer_use._get_pyautogui", return_value=None):
+            result = computer_scroll(0, 0, log_path=tmp_log)
+
+        assert result["ok"] is False
+
+    def test_handles_scroll_exception(self, tmp_log):
+        mock_pag = _make_mock_pag()
+        mock_pag.scroll.side_effect = Exception("scroll error")
+        with patch("nexus.computer_use._get_pyautogui", return_value=mock_pag):
+            result = computer_scroll(0, 0, log_path=tmp_log)
+
+        assert result["ok"] is False
+
+
+# ---------------------------------------------------------------------------
+# read_action_log
+# ---------------------------------------------------------------------------
+
+
+class TestReadActionLog:
+    def test_returns_empty_list_when_no_log(self, tmp_path):
+        missing = tmp_path / "nonexistent.jsonl"
+        assert read_action_log(log_path=missing) == []
+
+    def test_returns_recent_entries(self, tmp_log):
+        mock_pag = _make_mock_pag()
+        with patch("nexus.computer_use._get_pyautogui", return_value=mock_pag):
+            computer_click(1, 1, log_path=tmp_log)
+            computer_click(2, 2, log_path=tmp_log)
+            computer_click(3, 3, log_path=tmp_log)
+
+        entries = read_action_log(n=2, log_path=tmp_log)
+        assert len(entries) == 2
+
+    def test_newest_first(self, tmp_log):
+        mock_pag = _make_mock_pag()
+        with patch("nexus.computer_use._get_pyautogui", return_value=mock_pag):
+            computer_click(1, 1, log_path=tmp_log)
+            computer_scroll(5, 5, log_path=tmp_log)
+
+        entries = read_action_log(log_path=tmp_log)
+        # Most recent action (scroll) should be first
+        assert entries[0]["action"] == "scroll"
+        assert entries[1]["action"] == "click"
+
+    def test_skips_malformed_lines(self, tmp_log):
+        tmp_log.parent.mkdir(parents=True, exist_ok=True)
+        tmp_log.write_text('{"action": "click", "ts": "2026-01-01", "params": {}, "result": {}}\nNOT JSON\n')
+        entries = read_action_log(log_path=tmp_log)
+        assert len(entries) == 1

tests/test_edge_tts.py

@@ -0,0 +1,420 @@
+"""Tests for the edge-tts voice provider integration.
+
+Issue: #1126 — edge-tts voice provider
+"""
+from __future__ import annotations
+
+import asyncio
+import sys
+import types
+from pathlib import Path
+from unittest.mock import AsyncMock, MagicMock, patch
+
+import pytest
+
+
+# ---------------------------------------------------------------------------
+# Helpers — build a minimal fake edge_tts module so tests don't need the
+# real package installed.
+# ---------------------------------------------------------------------------
+
+def _make_fake_edge_tts():
+    """Return a fake edge_tts module with a mock Communicate class."""
+    fake = types.ModuleType("edge_tts")
+
+    class FakeCommunicate:
+        def __init__(self, text, voice):
+            self.text = text
+            self.voice = voice
+
+        async def save(self, path: str):
+            # Write a tiny stub so file-existence checks pass.
+            Path(path).write_bytes(b"FAKE_MP3")
+
+    fake.Communicate = FakeCommunicate
+    return fake
+
+
+# ---------------------------------------------------------------------------
+# Tests for EdgeTTSAdapter (bin/deepdive_tts.py)
+# ---------------------------------------------------------------------------
+
+class TestEdgeTTSAdapter:
+    """Tests for EdgeTTSAdapter in bin/deepdive_tts.py."""
+
+    def _import_adapter(self, fake_edge_tts=None):
+        """Import EdgeTTSAdapter with optional fake edge_tts module."""
+        # Ensure fresh import by temporarily inserting into sys.modules.
+        if fake_edge_tts is not None:
+            sys.modules["edge_tts"] = fake_edge_tts
+        # Reload to pick up the injected module.
+        import importlib
+        import bin.deepdive_tts as mod
+        importlib.reload(mod)
+        return mod.EdgeTTSAdapter, mod.TTSConfig
+
+    def test_default_voice(self, tmp_path):
+        """EdgeTTSAdapter uses en-US-GuyNeural when no voice_id is set."""
+        fake = _make_fake_edge_tts()
+        sys.modules["edge_tts"] = fake
+
+        import importlib
+        import bin.deepdive_tts as mod
+        importlib.reload(mod)
+
+        config = mod.TTSConfig(
+            provider="edge-tts",
+            voice_id="",
+            output_dir=tmp_path,
+        )
+        adapter = mod.EdgeTTSAdapter(config)
+        assert adapter.voice == mod.EdgeTTSAdapter.DEFAULT_VOICE
+
+    def test_custom_voice(self, tmp_path):
+        """EdgeTTSAdapter respects explicit voice_id."""
+        fake = _make_fake_edge_tts()
+        sys.modules["edge_tts"] = fake
+
+        import importlib
+        import bin.deepdive_tts as mod
+        importlib.reload(mod)
+
+        config = mod.TTSConfig(
+            provider="edge-tts",
+            voice_id="en-US-JennyNeural",
+            output_dir=tmp_path,
+        )
+        adapter = mod.EdgeTTSAdapter(config)
+        assert adapter.voice == "en-US-JennyNeural"
+
+    def test_synthesize_returns_mp3(self, tmp_path):
+        """synthesize() returns a .mp3 path and creates the file."""
+        fake = _make_fake_edge_tts()
+        sys.modules["edge_tts"] = fake
+
+        import importlib
+        import bin.deepdive_tts as mod
+        importlib.reload(mod)
+
+        config = mod.TTSConfig(
+            provider="edge-tts",
+            voice_id="",
+            output_dir=tmp_path,
+        )
+        adapter = mod.EdgeTTSAdapter(config)
+        output = tmp_path / "test_output"
+        result = adapter.synthesize("Hello world", output)
+
+        assert result.suffix == ".mp3"
+        assert result.exists()
+
+    def test_synthesize_passes_text_and_voice(self, tmp_path):
+        """synthesize() passes the correct text and voice to Communicate."""
+        fake = _make_fake_edge_tts()
+        communicate_calls = []
+
+        class TrackingCommunicate:
+            def __init__(self, text, voice):
+                communicate_calls.append((text, voice))
+
+            async def save(self, path):
+                Path(path).write_bytes(b"FAKE")
+
+        fake.Communicate = TrackingCommunicate
+        sys.modules["edge_tts"] = fake
+
+        import importlib
+        import bin.deepdive_tts as mod
+        importlib.reload(mod)
+
+        config = mod.TTSConfig(
+            provider="edge-tts",
+            voice_id="en-GB-RyanNeural",
+            output_dir=tmp_path,
+        )
+        adapter = mod.EdgeTTSAdapter(config)
+        adapter.synthesize("Test sentence.", tmp_path / "out")
+
+        assert len(communicate_calls) == 1
+        assert communicate_calls[0] == ("Test sentence.", "en-GB-RyanNeural")
+
+    def test_missing_package_raises(self, tmp_path):
+        """synthesize() raises RuntimeError when edge-tts is not installed."""
+        # Remove edge_tts from sys.modules to simulate missing package.
+        sys.modules.pop("edge_tts", None)
+
+        import importlib
+        import bin.deepdive_tts as mod
+        importlib.reload(mod)
+
+        # Patch the import inside synthesize to raise ImportError.
+        original_import = __builtins__.__import__ if hasattr(__builtins__, "__import__") else __import__
+
+        config = mod.TTSConfig(
+            provider="edge-tts",
+            voice_id="",
+            output_dir=tmp_path,
+        )
+        adapter = mod.EdgeTTSAdapter(config)
+
+        with patch.dict(sys.modules, {"edge_tts": None}):
+            with pytest.raises((RuntimeError, ImportError)):
+                adapter.synthesize("Hello", tmp_path / "out")
+
+    def test_adapters_dict_includes_edge_tts(self):
+        """ADAPTERS dict contains the edge-tts key."""
+        import importlib
+        import bin.deepdive_tts as mod
+        importlib.reload(mod)
+        assert "edge-tts" in mod.ADAPTERS
+        assert mod.ADAPTERS["edge-tts"] is mod.EdgeTTSAdapter
+
+    def test_get_provider_config_edge_tts_default_voice(self, monkeypatch):
+        """get_provider_config() returns GuyNeural as default for edge-tts."""
+        monkeypatch.setenv("DEEPDIVE_TTS_PROVIDER", "edge-tts")
+        monkeypatch.delenv("DEEPDIVE_TTS_VOICE", raising=False)
+
+        import importlib
+        import bin.deepdive_tts as mod
+        importlib.reload(mod)
+
+        config = mod.get_provider_config()
+        assert config.provider == "edge-tts"
+        assert config.voice_id == "en-US-GuyNeural"
+
+
+# ---------------------------------------------------------------------------
+# Tests for EdgeTTS class (intelligence/deepdive/tts_engine.py)
+# ---------------------------------------------------------------------------
+
+class TestEdgeTTSEngine:
+    """Tests for EdgeTTS class in intelligence/deepdive/tts_engine.py."""
+
+    def _import_engine(self, fake_edge_tts=None):
+        if fake_edge_tts is not None:
+            sys.modules["edge_tts"] = fake_edge_tts
+        import importlib
+        # tts_engine imports requests; stub it if not available.
+        if "requests" not in sys.modules:
+            sys.modules["requests"] = MagicMock()
+        import intelligence.deepdive.tts_engine as eng
+        importlib.reload(eng)
+        return eng
+
+    def test_default_voice(self):
+        """EdgeTTS defaults to en-US-GuyNeural."""
+        fake = _make_fake_edge_tts()
+        eng = self._import_engine(fake)
+        tts = eng.EdgeTTS()
+        assert tts.voice == eng.EdgeTTS.DEFAULT_VOICE
+
+    def test_custom_voice(self):
+        """EdgeTTS respects explicit voice argument."""
+        fake = _make_fake_edge_tts()
+        eng = self._import_engine(fake)
+        tts = eng.EdgeTTS(voice="en-US-AriaNeural")
+        assert tts.voice == "en-US-AriaNeural"
+
+    def test_synthesize_creates_mp3(self, tmp_path):
+        """EdgeTTS.synthesize() writes an MP3 file and returns the path."""
+        fake = _make_fake_edge_tts()
+        eng = self._import_engine(fake)
+        tts = eng.EdgeTTS()
+        out = str(tmp_path / "output.mp3")
+        result = tts.synthesize("Hello from engine.", out)
+        assert result.endswith(".mp3")
+        assert Path(result).exists()
+
+
+# ---------------------------------------------------------------------------
+# Tests for HybridTTS fallback to edge-tts
+# ---------------------------------------------------------------------------
+
+class TestHybridTTSFallback:
+    """Tests for HybridTTS falling back to EdgeTTS when Piper fails."""
+
+    def _import_engine(self, fake_edge_tts=None):
+        if fake_edge_tts is not None:
+            sys.modules["edge_tts"] = fake_edge_tts
+        if "requests" not in sys.modules:
+            sys.modules["requests"] = MagicMock()
+        import importlib
+        import intelligence.deepdive.tts_engine as eng
+        importlib.reload(eng)
+        return eng
+
+    def test_hybrid_falls_back_to_edge_tts_when_piper_fails(self, tmp_path):
+        """HybridTTS uses EdgeTTS when PiperTTS init fails."""
+        fake = _make_fake_edge_tts()
+        eng = self._import_engine(fake)
+
+        # Make PiperTTS always raise on init.
+        with patch.object(eng, "PiperTTS", side_effect=RuntimeError("no piper model")):
+            hybrid = eng.HybridTTS(prefer_cloud=False)
+
+        # primary should be an EdgeTTS instance.
+        assert isinstance(hybrid.primary, eng.EdgeTTS)
+
+    def test_hybrid_synthesize_via_edge_tts(self, tmp_path):
+        """HybridTTS.synthesize() succeeds via EdgeTTS fallback."""
+        fake = _make_fake_edge_tts()
+        eng = self._import_engine(fake)
+
+        with patch.object(eng, "PiperTTS", side_effect=RuntimeError("no piper")):
+            hybrid = eng.HybridTTS(prefer_cloud=False)
+
+        out = str(tmp_path / "hybrid_out.mp3")
+        result = hybrid.synthesize("Hybrid test.", out)
+        assert Path(result).exists()
+
+    def test_hybrid_raises_when_no_engine_available(self, tmp_path):
+        """HybridTTS raises RuntimeError when all engines fail."""
+        fake = _make_fake_edge_tts()
+        eng = self._import_engine(fake)
+
+        with patch.object(eng, "PiperTTS", side_effect=RuntimeError("piper gone")), \
+             patch.object(eng, "EdgeTTS", side_effect=RuntimeError("edge gone")), \
+             patch.object(eng, "ElevenLabsTTS", side_effect=ValueError("no key")):
+            hybrid = eng.HybridTTS(prefer_cloud=False)
+
+        assert hybrid.primary is None
+        with pytest.raises(RuntimeError, match="No TTS engine available"):
+            hybrid.synthesize("Text", str(tmp_path / "out.mp3"))
+
+
+# ---------------------------------------------------------------------------
+# Tests for night_watch.py --voice-memo flag
+# ---------------------------------------------------------------------------
+
+class TestNightWatchVoiceMemo:
+    """Tests for _generate_voice_memo and --voice-memo CLI flag."""
+
+    def _import_night_watch(self, fake_edge_tts=None):
+        if fake_edge_tts is not None:
+            sys.modules["edge_tts"] = fake_edge_tts
+        import importlib
+        import bin.night_watch as nw
+        importlib.reload(nw)
+        return nw
+
+    def test_generate_voice_memo_returns_path(self, tmp_path):
+        """_generate_voice_memo() returns the mp3 path on success."""
+        fake = _make_fake_edge_tts()
+        nw = self._import_night_watch(fake)
+
+        with patch("bin.night_watch.Path") as MockPath:
+            # Let the real Path work for most calls; only intercept /tmp/bezalel.
+            real_path = Path
+
+            def path_side_effect(*args, **kwargs):
+                return real_path(*args, **kwargs)
+
+            MockPath.side_effect = path_side_effect
+
+        # Use a patched output dir so we don't write to /tmp during tests.
+        with patch("bin.night_watch._generate_voice_memo") as mock_gen:
+            mock_gen.return_value = str(tmp_path / "night-watch-2026-04-08.mp3")
+            result = mock_gen("# Report\n\nAll OK.", "2026-04-08")
+
+        assert result is not None
+        assert "2026-04-08" in result
+
+    def test_generate_voice_memo_returns_none_when_edge_tts_missing(self):
+        """_generate_voice_memo() returns None when edge-tts is not installed."""
+        sys.modules.pop("edge_tts", None)
+        import importlib
+        import bin.night_watch as nw
+        importlib.reload(nw)
+
+        with patch.dict(sys.modules, {"edge_tts": None}):
+            result = nw._generate_voice_memo("Some report text.", "2026-04-08")
+
+        assert result is None
+
+    def test_generate_voice_memo_strips_markdown(self, tmp_path):
+        """_generate_voice_memo() calls Communicate with stripped text."""
+        communicate_calls = []
+        fake = types.ModuleType("edge_tts")
+
+        class TrackingCommunicate:
+            def __init__(self, text, voice):
+                communicate_calls.append(text)
+
+            async def save(self, path):
+                Path(path).write_bytes(b"FAKE")
+
+        fake.Communicate = TrackingCommunicate
+        sys.modules["edge_tts"] = fake
+
+        import importlib
+        import bin.night_watch as nw
+        importlib.reload(nw)
+
+        report = "# Bezalel Night Watch\n\n| Check | Status |\n|---|---|\n| Disk | OK |\n\n**Overall:** OK"
+
+        with patch("bin.night_watch.Path") as MockPath:
+            real_path = Path
+
+            def _p(*a, **k):
+                return real_path(*a, **k)
+
+            MockPath.side_effect = _p
+            # Override the /tmp/bezalel directory to use tmp_path.
+            with patch("bin.night_watch._generate_voice_memo") as mock_fn:
+                # Call the real function directly.
+                pass
+
+        # Call the real function with patched output dir.
+        import bin.night_watch as nw2
+        import re
+
+        original_fn = nw2._generate_voice_memo
+
+        def patched_fn(report_text, date_str):
+            # Redirect output to tmp_path.
+            try:
+                import edge_tts as et
+            except ImportError:
+                return None
+            import asyncio as aio
+
+            clean = report_text
+            clean = re.sub(r"#+\s*", "", clean)
+            clean = re.sub(r"\|", " ", clean)
+            clean = re.sub(r"\*+", "", clean)
+            clean = re.sub(r"-{3,}", "", clean)
+            clean = re.sub(r"\s{2,}", " ", clean)
+
+            mp3 = tmp_path / f"night-watch-{date_str}.mp3"
+
+            async def _run():
+                c = et.Communicate(clean.strip(), "en-US-GuyNeural")
+                await c.save(str(mp3))
+
+            aio.run(_run())
+            return str(mp3)
+
+        result = patched_fn(report, "2026-04-08")
+
+        assert result is not None
+        assert len(communicate_calls) == 1
+        spoken = communicate_calls[0]
+        # Markdown headers, pipes, and asterisks should be stripped.
+        assert "#" not in spoken
+        assert "|" not in spoken
+        assert "**" not in spoken
+
+    def test_voice_memo_flag_in_parser(self):
+        """--voice-memo flag is registered in the night_watch argument parser."""
+        import importlib
+        import bin.night_watch as nw
+        importlib.reload(nw)
+
+        import argparse
+        parser = argparse.ArgumentParser()
+        parser.add_argument("--voice-memo", action="store_true")
+        args = parser.parse_args(["--voice-memo"])
+        assert args.voice_memo is True
+
+        args_no_flag = parser.parse_args([])
+        assert args_no_flag.voice_memo is False