v0.2.1: earcons — audio feedback tones (eyes-free confirmation)

short confirmation tones on daemon events so the user gets eyes-free "did it hear me?"
feedback without watching the terminal. NOT TTS — short pre-generated .wav beeps.

- audio_out.py — reusable audio-OUT module (the reverse of audio.py's capture, the
  less-tested WSLg direction). three-tier player: paplay-first (a SEPARATE process, so
  it doesn't contend with the sounddevice mic stream on the duplex-flaky WSLg bridge),
  then in-process sounddevice, then powershell.exe SoundPlayer. best-effort per-backend
  volume. plays a wav path and knows nothing about events — v0.3 TTS reuses it.
- sound.py — Earcons: the single event->tone map (wake/accept/no_match/submit) gated by
  [sound] config (master enabled + per-event flags). daemon._handle wiring: an injected
  command plays accept (submit plays submit); no-match / target-missing / unknown-context
  plays no_match; pure daemon-control commands (list/version/…) play nothing.
- sounds/ — committed earcon wavs + generate.py (regen-only). committed (not generated
  at install) so the package is self-contained and a missing tone can never appear.
  packaged via pyproject [tool.setuptools.package-data].
- [sound] config: enabled (master, on), on_wake (OFF by default — bleed/chatty),
  on_accept/on_no_match/on_submit (on), volume (0-1 best-effort), [sound.files] overrides.
- claudedo test-tone — plays each tone, the audio-OUT gate (mirrors test-audio).
- install.sh now also checks RDPSink (audio-out) alongside RDPSource.

INVARIANT: earcons are fire-and-forget on a worker thread and NEVER block or break the
inject path. a missing tone file or dead speaker logs once and is swallowed, never
raised — a broken speaker must never stop "claudedo yes" from injecting.

de-risks the WSLg audio-OUT path that v0.3 TTS-readback will reuse.

Signed-off-by: disqualifier <dev@disqualifier.me>

README.md

@@ -84,6 +84,7 @@ claudedo set <name>       # set the sticky target -> claude-<name> (alias: switc
 claudedo unset            # clear the sticky target
 claudedo list             # list running claude-* sessions
 claudedo test-audio       # verify the mic capture path
+claudedo test-tone        # play each earcon (verify the audio-OUT path)
 ```
 
 ### Modes
@@ -211,6 +212,36 @@ Whisper model. The **`system`** namespace gives daemon-control by voice without
 Claude: `system status` (mode / target / model / context count) and `system reload
 [config|contexts]`.
 
+## Earcons (audio feedback tones)
+
+Short confirmation tones play on key events so you get **eyes-free feedback** — "did it
+hear me?" — without watching the terminal. They're tones, not speech (not TTS): a bright
+blip when a command is accepted/injected, a low buzz when nothing matched, a rising chime
+on submit, and an optional blip on wake. Tones are short (<300ms) and quiet, and they're
+**additive** to the console feed — mute them and read at the desk, or hear them eyes-free.
+
+Verify the audio-OUT path (the reverse of `test-audio`, and the less-tested direction on
+WSLg) with:
+
+```bash
+claudedo test-tone        # plays each tone through WSLg — the audio-out gate
+```
+
+Tones play through WSLg's PulseAudio sink, **paplay-first** (a separate process, so it
+doesn't contend with the sounddevice mic stream), falling back to in-process sounddevice,
+then `powershell.exe` on the Windows host. Playback is **fire-and-forget**: a dead speaker
+or a missing tone file logs once and is ignored — audio-out can never block or break a
+command (`claudedo yes` injects whether or not the speaker works).
+
+Configure under `[sound]`: `enabled` (master, default on), per-event `on_wake` (default
+**off** — a blip right before you speak can bleed into the command capture, and it's
+chatty), `on_accept` / `on_no_match` / `on_submit` (default on), and `volume` (0.0–1.0,
+best-effort — scaled for sounddevice, `--volume` for paplay, ignored by the PowerShell
+fallback). A `[sound.files]` table can point any event at your own `.wav`. The shipped
+tones live in the package (`claudedo/sounds/*.wav`); `claudedo/sounds/generate.py` is a
+synthetic-beep fallback that can regenerate a placeholder set (it does **not** reproduce
+the shipped tones — running it overwrites them with plain beeps).
+
 ## The confirmed Claude Code keymap
 
 The keystrokes in [`keys.py`](src/claudedo/keys.py) were confirmed **empirically**

config.toml

@@ -88,3 +88,27 @@ print_heard = false
 context_multiline = true
 # separator inserted between blurb and instruction when context_multiline = false.
 context_separator = " — "
+
+[sound]
+# earcons — short confirmation tones on daemon events so you get eyes-free feedback
+# ("did it hear me?") without watching the terminal. tones are SHORT (<300ms) and quiet;
+# they play OUT through WSLg's PulseAudio sink (paplay-first, sounddevice fallback, then
+# powershell.exe). additive to the console feed — mute these and read at the desk, or
+# hear them eyes-free. a dead speaker never blocks/breaks a command (fire-and-forget).
+enabled = true
+# blip when a wake phrase is recognized. OFF by default: a blip right before you speak
+# the command can bleed into its capture, and it's chatty. turn on only if you want it.
+on_wake = false
+# positive blip when a command is recognized/injected.
+on_accept = true
+# distinct lower buzz when nothing matched or the target was missing (did nothing).
+on_no_match = true
+# rising chime when a send/submit is injected.
+on_submit = true
+# best-effort 0.0-1.0 (scaled for sounddevice, --volume for paplay; ignored by the
+# powershell fallback, which has no volume control).
+volume = 0.5
+# optional per-event overrides to swap in your own .wav files, e.g.:
+#   [sound.files]
+#   accept = "~/sounds/my_accept.wav"
+[sound.files]

install.sh

@@ -57,9 +57,14 @@ say "verifying audio path"
 if pactl info >/dev/null 2>&1; then
     DEFAULT_SRC="$(pactl info | sed -n 's/^Default Source: //p')"
     echo "  Default Source: ${DEFAULT_SRC:-<none>}"
+    DEFAULT_SINK="$(pactl info | sed -n 's/^Default Sink: //p')"
+    echo "  Default Sink:   ${DEFAULT_SINK:-<none>}"
     if ! pactl list sources short 2>/dev/null | grep -q RDPSource; then
         warn "RDPSource not listed by pactl — mic may not be bridged. check Windows mic permission."
     fi
+    if ! pactl list sinks short 2>/dev/null | grep -q RDPSink; then
+        warn "RDPSink not listed by pactl — earcon/TTS audio-OUT may not play. run 'claudedo test-tone' to check."
+    fi
 else
     warn "pactl info failed — pulseaudio-utils installed but no server reachable yet."
 fi

pyproject.toml

@@ -4,7 +4,7 @@ build-backend = "setuptools.build_meta"
 
 [project]
 name = "claudedo"
-version = "0.2.0"
+version = "0.2.1"
 description = "voice-control daemon for claude code (local STT -> tmux send-keys)"
 readme = "README.md"
 requires-python = ">=3.10"
@@ -23,6 +23,9 @@ claudedo = "claudedo.__main__:main"
 [tool.setuptools]
 package-dir = { "" = "src" }
 
+[tool.setuptools.package-data]
+"claudedo.sounds" = ["*.wav"]
+
 [tool.setuptools.packages.find]
 where = ["src"]
 

src/claudedo/__init__.py

@@ -1,3 +1,3 @@
 """claudedo — voice-control daemon for claude code (local STT -> tmux send-keys)"""
 
-__version__ = "0.2.0"
+__version__ = "0.2.1"

src/claudedo/__main__.py

@@ -97,6 +97,36 @@ def cmd_stop(_args: argparse.Namespace) -> int:
     return 1
 
 
+def cmd_test_tone(args: argparse.Namespace) -> int:
+    config = _load_or_die(args.config)
+    from . import audio_out, sound
+
+    print("== claudedo test-tone ==")
+    if not audio_out.available():
+        print("no audio-out backend found (paplay / powershell.exe).", file=sys.stderr)
+        print("install pulseaudio-utils (run install.sh) for paplay.", file=sys.stderr)
+        return 1
+    earcons = sound.Earcons(config)
+    print(f"playing each tone via WSLg audio-out (volume {config.sound_volume}) — listen ...")
+    ok = True
+    for event in sound.event_names():
+        path = earcons.tone_path(event)
+        if path is None or not Path(path).is_file():
+            print(f"  {event:9} MISSING ({path})")
+            ok = False
+            continue
+        print(f"  {event:9} {path.name} ...", flush=True)
+        played = audio_out.play_blocking(path, volume=config.sound_volume)
+        if not played:
+            print(f"  {event:9} FAILED to play", file=sys.stderr)
+            ok = False
+    if not ok:
+        print("some tones did not play — audio-out may be unavailable.", file=sys.stderr)
+        return 1
+    print("audio-out OK (all tones played).")
+    return 0
+
+
 def cmd_reload(_args: argparse.Namespace) -> int:
     if daemon.reload_running():
         print("signalled claudedo to reload config + contexts")
@@ -234,6 +264,8 @@ def build_parser() -> argparse.ArgumentParser:
                    ).set_defaults(func=cmd_reload)
     sub.add_parser("status", help="show daemon status").set_defaults(func=cmd_status)
     sub.add_parser("test-audio", help="verify the mic capture path").set_defaults(func=cmd_test_audio)
+    sub.add_parser("test-tone", help="play each earcon (verify the audio-out path)"
+                   ).set_defaults(func=cmd_test_tone)
     sub.add_parser("install", help="re-run the bootstrap (install.sh)").set_defaults(func=cmd_install)
     sub.add_parser("unset", help="clear the sticky target session").set_defaults(func=cmd_unset)
     sub.add_parser("list", help="list running claude-* sessions").set_defaults(func=cmd_list)

src/claudedo/audio_out.py

@@ -0,0 +1,158 @@
+"""audio output — play short .wav files through the WSLg/PulseAudio sink (RDPSink).
+
+the reverse direction of audio.py's mic capture, and the less-tested path on WSLg. a
+three-tier player picks the first backend that works and remembers it:
+
+  1. paplay (pulseaudio-utils) — a SEPARATE process hitting PulseAudio directly. this
+     is the primary on purpose: the daemon captures with sounddevice (an open input
+     stream in listen mode), so keeping OUTPUT in a separate process avoids stacking
+     input+output in one lib on a bridge known to be duplex-flaky.
+  2. sounddevice sd.play() — in-process fallback if paplay is absent.
+  3. powershell.exe SoundPlayer — last resort via the Windows host (no volume control).
+
+both earcons (sound.py) and future v0.3 TTS readback play through this module — keep it
+generic (it plays a wav path, it knows nothing about events). playback is fire-and-
+forget on a worker thread: a missing file or a dead speaker logs once and is swallowed,
+never raised, so audio-out can NEVER block or break the inject path.
+"""
+
+from __future__ import annotations
+
+import logging
+import shutil
+import subprocess
+import threading
+import wave
+from pathlib import Path
+
+log = logging.getLogger(__name__)
+
+_PAPLAY = "paplay"
+_POWERSHELL = "powershell.exe"
+
+_backend_lock = threading.Lock()
+_chosen_backend: str | None = None
+_warned = False
+
+
+def _have(cmd: str) -> bool:
+    return shutil.which(cmd) is not None
+
+
+def _clamp_volume(volume: float) -> float:
+    return max(0.0, min(1.0, float(volume)))
+
+
+def _play_paplay(path: Path, volume: float) -> bool:
+    """play via paplay; volume scaled through --volume (0-65536 linear)"""
+    vol = int(_clamp_volume(volume) * 65536)
+    proc = subprocess.run(
+        [_PAPLAY, f"--volume={vol}", str(path)],
+        stdout=subprocess.DEVNULL, stderr=subprocess.PIPE,
+    )
+    if proc.returncode != 0:
+        log.debug("paplay failed: %s", proc.stderr.decode("utf-8", "replace").strip())
+        return False
+    return True
+
+
+def _play_sounddevice(path: Path, volume: float) -> bool:
+    """play via sounddevice (in-process fallback); volume scales the samples"""
+    try:
+        import numpy as np
+        import sounddevice as sd
+    except Exception as exc:
+        log.debug("sounddevice unavailable: %s", exc)
+        return False
+    try:
+        with wave.open(str(path), "rb") as wf:
+            sr = wf.getframerate()
+            frames = wf.readframes(wf.getnframes())
+        data = np.frombuffer(frames, dtype="<i2").astype(np.float32) / 32768.0
+        data = data * _clamp_volume(volume)
+        sd.play(data, sr)
+        sd.wait()
+        return True
+    except Exception as exc:
+        log.debug("sounddevice playback failed: %s", exc)
+        return False
+
+
+def _play_powershell(path: Path, _volume: float) -> bool:
+    """play via the Windows host (last resort). SoundPlayer has no volume control,
+    so volume is ignored on this backend (documented best-effort)."""
+    if not _have(_POWERSHELL):
+        return False
+    try:
+        win = subprocess.run(["wslpath", "-w", str(path)], stdout=subprocess.PIPE,
+                             stderr=subprocess.DEVNULL)
+        winpath = win.stdout.decode("utf-8", "replace").strip() if win.returncode == 0 else str(path)
+        script = f"(New-Object Media.SoundPlayer '{winpath}').PlaySync()"
+        proc = subprocess.run([_POWERSHELL, "-NoProfile", "-Command", script],
+                              stdout=subprocess.DEVNULL, stderr=subprocess.DEVNULL)
+        return proc.returncode == 0
+    except Exception as exc:
+        log.debug("powershell playback failed: %s", exc)
+        return False
+
+
+_BACKENDS = {
+    "paplay": _play_paplay,
+    "sounddevice": _play_sounddevice,
+    "powershell": _play_powershell,
+}
+_ORDER = ("paplay", "sounddevice", "powershell")
+
+
+def _play_sync(path: Path, volume: float) -> bool:
+    """play a wav synchronously, choosing/remembering a working backend. returns
+    whether playback succeeded; never raises."""
+    global _chosen_backend, _warned
+    if not path.is_file():
+        log.debug("tone file missing: %s", path)
+        return False
+
+    with _backend_lock:
+        order = (_chosen_backend,) + _ORDER if _chosen_backend else _ORDER
+    tried = []
+    for name in order:
+        if name in tried:
+            continue
+        tried.append(name)
+        if name == "paplay" and not _have(_PAPLAY):
+            continue
+        if _BACKENDS[name](path, volume):
+            with _backend_lock:
+                _chosen_backend = name
+            return True
+
+    with _backend_lock:
+        if not _warned:
+            _warned = True
+            log.warning("audio-out unavailable (tried %s) — continuing silently; "
+                        "tones disabled for this run", ", ".join(tried))
+    return False
+
+
+def play(path: str | Path, volume: float = 1.0, blocking: bool = False) -> None:
+    """play a wav file. fire-and-forget by default (a worker thread), so a slow or
+    dead speaker never delays the caller. set blocking=True only for test-tone, where
+    we want to play tones in sequence and report the result.
+
+    failures are swallowed (logged once) — audio-out must never break a command.
+    """
+    p = Path(path)
+    if blocking:
+        _play_sync(p, volume)
+        return
+    threading.Thread(target=_play_sync, args=(p, volume), daemon=True).start()
+
+
+def play_blocking(path: str | Path, volume: float = 1.0) -> bool:
+    """synchronous play that returns success — for test-tone's audio-out gate"""
+    return _play_sync(Path(path), volume)
+
+
+def available() -> bool:
+    """true if any audio-out backend is present (best-effort, paplay/powershell)"""
+    return _have(_PAPLAY) or _have(_POWERSHELL)

src/claudedo/config.py

@@ -58,6 +58,13 @@ class Config:
     print_heard: bool
     context_multiline: bool
     context_separator: str
+    sound_enabled: bool
+    sound_on_wake: bool
+    sound_on_accept: bool
+    sound_on_no_match: bool
+    sound_on_submit: bool
+    sound_volume: float
+    sound_files: dict[str, str]
     source_path: Path | None = field(default=None)
 
 
@@ -132,12 +139,21 @@ def load_config(explicit: str | os.PathLike | None = None) -> Config:
         print_heard=bool(_require(raw, "behavior", "print_heard", (bool,), False)),
         context_multiline=bool(_require(raw, "behavior", "context_multiline", (bool,), True)),
         context_separator=str(_require(raw, "behavior", "context_separator", (str,), " — ")),
+        sound_enabled=bool(_require(raw, "sound", "enabled", (bool,), True)),
+        sound_on_wake=bool(_require(raw, "sound", "on_wake", (bool,), False)),
+        sound_on_accept=bool(_require(raw, "sound", "on_accept", (bool,), True)),
+        sound_on_no_match=bool(_require(raw, "sound", "on_no_match", (bool,), True)),
+        sound_on_submit=bool(_require(raw, "sound", "on_submit", (bool,), True)),
+        sound_volume=float(_require(raw, "sound", "volume", (int, float), 0.5)),
+        sound_files=dict(_require(raw, "sound", "files", (dict,), {})),
         source_path=path,
     )
     for label, val in (("wake_fuzzy_threshold", cfg.wake_fuzzy_threshold),
                        ("command_fuzzy_threshold", cfg.command_fuzzy_threshold)):
         if not 0.0 < val <= 1.0:
             raise ConfigError(f"[behavior].{label} must be in (0, 1]")
+    if not 0.0 <= cfg.sound_volume <= 1.0:
+        raise ConfigError("[sound].volume must be in [0, 1]")
     if cfg.vad_silence_ms <= 0 or cfg.vad_max_seconds <= 0:
         raise ConfigError("[vad].silence_ms and max_seconds must be positive")
     if cfg.samplerate <= 0 or cfg.channels <= 0:

src/claudedo/daemon.py

@@ -20,6 +20,7 @@ from . import __version__, audio, grammar, inject, keys, target
 from .config import Config, ConfigError, load_config
 from .console import HELP, SYSTEM, VOICE, Console
 from .contexts import Contexts, ContextsError, load_contexts
+from .sound import Earcons
 from .stt import Transcriber
 
 log = logging.getLogger(__name__)
@@ -130,6 +131,7 @@ class Daemon:
         self._pending: dict[str, int] = {}
         self._console = Console()
         self._contexts = Contexts()
+        self._earcons = Earcons(config)
         self._last_stt_ms = 0.0
         self._last_audio_s = 0.0
 
@@ -202,10 +204,14 @@ class Daemon:
         parsed = grammar.parse(transcript, cfg.wake_phrases, cfg.wake_fuzzy_threshold,
                                cfg.command_fuzzy_threshold, require_wake, filler=cfg.filler_words)
         if parsed is None or parsed.action is None:
+            if parsed is not None:
+                self._earcons.play("wake")
             self._console.emit(VOICE, f'heard "{transcript}" -> no command matched {self._timing()}',
                                "yellow")
+            self._earcons.play("no_match")
             return
         action = parsed.action
+        self._earcons.play("wake")
 
         # a command was recognized — echo what we heard (green) before acting. note the
         # matched wake phrase (magenta) when the transcript didn't literally contain it
@@ -270,12 +276,14 @@ class Daemon:
             name = str(action.arg[0])
             if self._contexts.get(name) is None:
                 self._console.emit(VOICE, f"no context named '{name}' -> did nothing", "red")
+                self._earcons.play("no_match")
                 return
 
         session, reason = target.resolve(parsed.one_shot, auto_target=cfg.auto_target)
         if session is None:
             self._console.emit(VOICE, f'heard "{transcript}" -> {reason} -> '
                                f'{self._describe(action)} did nothing', "red")
+            self._earcons.play("no_match")
             return
         if action.name == "context":
             self._inject_context(session, action)
@@ -287,9 +295,12 @@ class Daemon:
         buffer so backspace/erase delete only back to the last submit boundary.
 
         the 'heard ...' echo is already printed by _handle and the [session] prefix
-        names the target, so these lines just report the keystrokes injected.
+        names the target, so these lines just report the keystrokes injected. the
+        earcon fires here (a real injection): submit chimes the submit tone, every
+        other injected command the accept tone.
         """
         name = action.name
+        self._earcons.play("submit" if name == "submit" else "accept")
 
         if name == "type":
             text = str(action.arg)
@@ -344,6 +355,7 @@ class Daemon:
         name, dictation = str(action.arg[0]), str(action.arg[1])
         blurb = self._contexts.get(name) or ""
 
+        self._earcons.play("accept")
         inject.send_literal(session, blurb)
         chars = len(blurb)
         if dictation:
@@ -382,6 +394,7 @@ class Daemon:
         toggled by voice and leaving the already-loaded transcriber untouched."""
         new_cfg.mode = self.mode
         self.config = new_cfg
+        self._earcons.update(new_cfg)
 
     def _do_system(self, arg) -> None:
         """daemon-control namespace (never injects to claude): status / reload."""

src/claudedo/sound.py

@@ -0,0 +1,91 @@
+"""earcons — short confirmation tones on daemon events, the eyes-free feedback layer.
+
+the single place that maps an event name to its tone file and the per-event enable
+flag. additive to the console feed (it does not replace the printed lines): at the desk
+mute tones and read; eyes-free, hear them. playback goes through audio_out (paplay-first,
+fire-and-forget) so a dead speaker never blocks or breaks a command.
+
+events:
+  wake      — a wake phrase was recognized (off by default — a blip right before you
+              speak the command can bleed into its capture; keep it off unless wanted)
+  accept    — a command was recognized/injected
+  no_match  — nothing matched, or the target was missing (did nothing)
+  submit    — a send/submit was injected
+
+tone files live in the packaged sounds/ dir; a per-event config override may point at a
+user file instead. a missing file is swallowed by audio_out (logged once), never raised.
+"""
+
+from __future__ import annotations
+
+import logging
+from pathlib import Path
+
+from . import audio_out
+from .config import Config
+
+log = logging.getLogger(__name__)
+
+_SOUNDS_DIR = Path(__file__).resolve().parent / "sounds"
+
+_EVENT_FILES = {
+    "wake": "wake.wav",
+    "accept": "accepted.wav",
+    "no_match": "no_match.wav",
+    "submit": "sent.wav",
+}
+
+_EVENT_FLAGS = {
+    "wake": "on_wake",
+    "accept": "on_accept",
+    "no_match": "on_no_match",
+    "submit": "on_submit",
+}
+
+
+class Earcons:
+    """resolves daemon events to tones and plays them per the [sound] config"""
+
+    def __init__(self, config: Config) -> None:
+        self._apply(config)
+
+    def update(self, config: Config) -> None:
+        """re-read the [sound] config after a live reload"""
+        self._apply(config)
+
+    def _apply(self, config: Config) -> None:
+        self.enabled = config.sound_enabled
+        self.volume = config.sound_volume
+        self._flags = {
+            "wake": config.sound_on_wake,
+            "accept": config.sound_on_accept,
+            "no_match": config.sound_on_no_match,
+            "submit": config.sound_on_submit,
+        }
+        self._overrides = dict(config.sound_files)
+
+    def _resolve(self, event: str) -> Path | None:
+        override = self._overrides.get(event) or self._overrides.get(_EVENT_FLAGS[event])
+        if override:
+            return Path(override).expanduser()
+        name = _EVENT_FILES.get(event)
+        return _SOUNDS_DIR / name if name else None
+
+    def play(self, event: str) -> None:
+        """play the tone for an event if enabled (master + per-event). fire-and-forget;
+        unknown/disabled events and missing files are silently no-ops."""
+        if not self.enabled or not self._flags.get(event, False):
+            return
+        path = self._resolve(event)
+        if path is None:
+            return
+        audio_out.play(path, volume=self.volume, blocking=False)
+
+    def tone_path(self, event: str) -> Path | None:
+        """the resolved tone path for an event (for test-tone), ignoring enable flags"""
+        return self._resolve(event)
+
+
+def event_names() -> list[str]:
+    """the earcon event names in a stable order (for test-tone iteration)"""
+    return ["wake", "accept", "no_match", "submit"]

src/claudedo/sounds/__init__.py

@@ -0,0 +1 @@
+"""earcon tone assets (committed .wav files) + their generator (generate.py)"""

src/claudedo/sounds/generate.py

@@ -0,0 +1,75 @@
+"""synthetic-beep FALLBACK generator for the earcon .wav tones.
+
+WARNING: the shipped tones in this directory are now CUSTOM CURATED recordings
+(edge-trimmed + loudness-normalized to ~-16 dB RMS with a -1 dBTP ceiling), NOT this
+script's output. running this script OVERWRITES those real tones with plain synthetic
+beeps — only do so if you deliberately want to fall back to generated placeholders. it
+is kept as a bootstrap fallback so the package can always self-generate a tone set (the
+"a missing tone must never break a command" guarantee), not as the source of the
+committed wavs.
+
+run ``python -m claudedo.sounds.generate`` (or ``python generate.py`` from this dir) to
+write placeholder beeps. each is a short, quiet, fade-enveloped sine/triangle at a
+distinct pitch so the four events are ear-distinguishable:
+
+  wake      — soft single mid blip (off by default; least intrusive)
+  accepted  — bright single high note (heard you, sent it)
+  no_match  — low two-note falling buzz (heard you, but nothing matched / error)
+  sent      — two-note rising chime (submitted to claude)
+
+kept SHORT (<300ms) and quiet (amplitude 0.4) — confirmations, not alarms.
+"""
+
+from __future__ import annotations
+
+import struct
+import wave
+from pathlib import Path
+
+SAMPLE_RATE = 44100
+AMPLITUDE = 0.4
+
+HERE = Path(__file__).resolve().parent
+
+
+def _tone(freq: float, dur: float) -> list[float]:
+    import math
+
+    n = int(SAMPLE_RATE * dur)
+    fade = max(1, int(SAMPLE_RATE * 0.01))
+    out = []
+    for i in range(n):
+        env = min(1.0, i / fade, (n - i) / fade)
+        out.append(math.sin(2.0 * math.pi * freq * (i / SAMPLE_RATE)) * env * AMPLITUDE)
+    return out
+
+
+def _silence(dur: float) -> list[float]:
+    return [0.0] * int(SAMPLE_RATE * dur)
+
+
+def _write(name: str, samples: list[float]) -> Path:
+    path = HERE / name
+    with wave.open(str(path), "wb") as wf:
+        wf.setnchannels(1)
+        wf.setsampwidth(2)
+        wf.setframerate(SAMPLE_RATE)
+        clipped = (max(-1.0, min(1.0, s)) for s in samples)
+        wf.writeframes(b"".join(struct.pack("<h", int(s * 32767)) for s in clipped))
+    return path
+
+
+def generate() -> list[Path]:
+    """(re)write all earcon wavs; return the written paths"""
+    tones = {
+        "wake.wav": _tone(660.0, 0.12),
+        "accepted.wav": _tone(988.0, 0.14),
+        "no_match.wav": _tone(330.0, 0.10) + _silence(0.03) + _tone(247.0, 0.12),
+        "sent.wav": _tone(784.0, 0.10) + _silence(0.02) + _tone(1175.0, 0.12),
+    }
+    return [_write(name, samples) for name, samples in tones.items()]
+
+
+if __name__ == "__main__":
+    for p in generate():
+        print(f"wrote {p}")