Day 1 follow-up to 96980c7. The device-picker UI in Settings now
actually takes effect: settings.microphoneDevice flows from the Svelte
store, through the Tauri invoke, into MicrophoneCapture::start_with_device
on the Rust side.
Touched paths (back-to-front):
- src-tauri/src/commands/audio.rs:start_native_capture — new optional
`device_name: Option<String>` parameter; routes to start_with_device
when set, falls back to auto-select start() when None or empty.
- src-tauri/src/commands/live.rs:StartLiveTranscriptionConfig — new
optional `microphone_device: Option<String>` field with same
semantics (rename_all = "camelCase" maps it to microphoneDevice on
the wire).
- src-tauri/src/commands/live.rs:run_live_session — picks
start_with_device when an explicit name is provided.
- src/lib/pages/DictationPage.svelte — passes
microphoneDevice: settings.microphoneDevice || null in the invoke.
Behaviour:
- "Auto" in the picker (empty string) -> backend auto-selects, skipping
monitor sources and validating by RMS energy.
- Specific device -> backend opens that device by exact name; if it has
been disconnected the user gets a clear error pointing them back at
Settings.
cargo check -p kon-audio passes clean. Tauri-crate cargo check requires
cmake (pre-existing infra dependency for whisper-rs-sys); install via
`sudo dnf install cmake clang-devel`.
Day 1 of the upgrade plan (output/reports/kon-upgrade-plan-2026-04-17.md
in the CORBEL workspace). Fixes the HANDOVER.md blocker: native live
transcription was capturing silence because PulseAudio/PipeWire monitor
sources (speaker loopback) were winning the device-selection race —
they deliver zero-valued bytes that satisfied the original
"any device that produces data within 350ms" check.
WHAT CHANGED:
crates/audio/src/capture.rs (rewrite):
- New `DeviceInfo` struct (serde-derived) for the Settings device picker
- New `MicrophoneCapture::list_devices()` enumerates inputs with metadata
- New `MicrophoneCapture::start_with_device(name)` for explicit selection
- Refactored `start()` with monitor-source filtering by name pattern
(.monitor suffix, "Monitor of " prefix, "loopback" substring) and
RMS-energy validation in a 350ms window
- Two-pass selection: real inputs first, monitor sources only as
last-resort fallback with explicit warning log
- Drop counter (Arc<AtomicU64>) tracks chunks dropped by `try_send`
failure under load — Codex review caught this as a silent-failure risk
- `dropped_chunks()` accessor for the live session
- Verbose tracing at every step for diagnosis
- Unit test for monitor-name detection
- `cargo check -p kon-audio` passes clean
crates/audio/src/lib.rs:
- Re-export `DeviceInfo`
crates/audio/Cargo.toml:
- Add serde dependency (for DeviceInfo derives)
src-tauri/src/commands/audio.rs:
- New `list_audio_devices` Tauri command (returns Vec<DeviceInfo>)
src-tauri/src/lib.rs:
- Register `list_audio_devices` in invoke_handler
src/lib/pages/SettingsPage.svelte:
- New "Audio" section with microphone picker dropdown
- Auto-populates on mount via `list_audio_devices`
- Refresh button + clear messaging about monitor sources
- Likely-monitor entries marked disabled in the dropdown
- Auto mode is the default (empty string in settings.microphoneDevice)
src/lib/stores/page.svelte.js:
- New `microphoneDevice` field in defaults (empty = auto-select)
NEXT STEPS (per the upgrade plan):
- Wire `microphoneDevice` from settings into `MicrophoneCapture::start_with_device`
in the live and standalone capture paths (currently both still call
the auto-selecting `start()`)
- Test on real hardware (Wayland + multiple input devices)
- Codex sanity-check of this diff is running in parallel; addendum to
follow if anything substantive comes back
Refs: /home/jake/Documents/CORBEL-Projects/kon/HANDOVER.md
output/reports/kon-upgrade-plan-2026-04-17.md (CORBEL workspace)
- Consolidated 7 separate Card components into a single Card with 8 accordion sections
- Added openSection $state variable; 'transcription' open by default, others collapsed
- Each section header is a clickable button with +/− indicator; clicking open section closes it
- Section headings use font-display italic 18px (vs 26px page title) as accordion headers
- All existing functionality preserved: toggles, dropdowns, model download/load, profiles, templates, hotkey recorder, output folder picker
- Profiles & Templates remain as nested accordion-within-accordion (existing pattern kept)
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
- Replaced tall header (pt-6 pb-4 with 28px timer + label stack) with 56px control strip
- Control strip: 40px record button + waveform placeholder + 20px timer + status badge + task toggle
- Waveform placeholder shows animated bars during recording, hint text at idle
- Actions moved to dedicated toolbar row (justify-end) below control strip
- Status footer (word count, format mode, profile) moved inside transcript Card
- Insert-at-cursor indicator relocated to status footer
- Page container remains flex-col h-full; transcript area fills all remaining space
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
- Replace card-per-entry layout with single-line rows (title truncated, duration, source icon, date, chevron)
- Add expand/collapse per row via expandedId $state (id-based, one at a time)
- Expanded detail shows full transcript, audio player (when active), and action buttons (Rename, Copy, Open viewer, Delete)
- All existing functionality preserved: search, playback, rename, delete, openViewer, clearAll
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
- Rename custom event from ramble:toggle-recording to kon:toggle-recording
- Change download filename prefix from ramble- to kon-
- Fix export extension mapping: csv and html formats now produce correct file extensions instead of falling through to .txt
- Add console.warn when PCM buffer exceeds 5-minute cap and gets truncated
- Replace magic numbers with shared constants (MAX_PCM_SAMPLES, MIN_CHUNK_SAMPLES, CHUNK_INTERVAL_MS, FEEDBACK_TIMEOUT_MS)
- Use shared pad() utility from time.js instead of inline reimplementation
- Remove unused saveTasks import
- Simplify redundant 3-branch append logic to 2 branches with clarifying comment
- Use $derived.by to avoid double transcript.trim() in wordCount
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
TaskSidebar:
- Changed from flex layout member to fixed overlay with backdrop
- Click backdrop or press Escape to close
- Content no longer shrinks when sidebar opens — buttons stay accessible
- Positioned at z-50 over main content, top offset for titlebar
Settings — Parakeet model management:
- Added Parakeet model state: download, check, load status
- New downloadParakeet() and loadParakeet() functions
- Listens for parakeet-download-progress events
- Parakeet section shows download/load/status controls
Settings — conditional engine sections:
- Whisper model selector only shows when engine === "whisper"
- Parakeet model controls only show when engine === "parakeet"
- Cleaner UI — only active engine's options visible
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
Float window fixes:
- Root layout now detects /float and /viewer URLs and hides Sidebar,
Titlebar, TaskSidebar for secondary windows. Belt-and-braces fix
since +layout@.svelte should handle this but may not in SPA mode.
- Float window title: "Ramble - To-do" → "Kon - To-do"
Transcription doubling guard:
- Added chunk_id deduplication set in DictationPage — if a chunk_id
has already been processed, skip the duplicate result
- Set cleared on each new recording session
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
Security fixes from code audit:
- CSP re-enabled in tauri.conf.json with strict directives
(was null — critical vulnerability)
- XSS fix in viewer highlightText(): HTML entities escaped before
inserting <mark> tags via {@html}
- Removed 3 unwrap() calls in rule_based.rs British English conversion
— replaced with safe let-else guards
- Removed unwrap() on main window lookup in lib.rs setup — now uses
if-let for graceful handling
- Wrapped JSON.parse in DictationPage transcription-result listener
with try/catch
Rebrand cleanup:
- Renamed all localStorage keys from ramble_* to kon_* across
7 files (stores, viewer, float, history)
12 tests passing, clippy clean.
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
- New probe_system command: returns RAM, CPU, OS info
- New rank_models command: scores models against detected hardware
- FirstRunPage.svelte: hardware summary, ranked model list with
"Recommended" badge on top pick, download progress bar, skip option
- First-run detection in layout: checks list_models + list_parakeet_models,
shows wizard if both empty
- Sidebar hidden during first-run for clean wizard experience
- clippy clean
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
- New copy_to_clipboard Tauri command using arboard 3.6
- Replaced all 5 navigator.clipboard.writeText() calls across
DictationPage, HistoryPage, FilesPage, and viewer with invoke()
- Native clipboard access independent of WebView permissions
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
