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Lumotia/HANDOVER-2026-04-18.md
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agent: dogfood polish 2026/04/19 — Linux native chrome + History redesign + mic picker cleanup
Second dogfood sprint. Headline fix: Linux now uses native KWin/Mutter
decorations instead of fragile frameless `startResizeDragging`, which
collapsed diagonal corner resize to a single axis and made drag feel
laggy. macOS / Windows keep custom chrome via `useCustomChrome` gate.

Other changes:

- Cross-window preferences sync via `kon:preferences-changed` Tauri
  event — theme and font changes propagate live to float/viewer.
- Hotkey recorder rewritten to use capture-phase document listener
  gated by $effect; button focus was unreliable in webkit2gtk.
- History page redesigned for cognitive-load hygiene: title-first
  compact row, inline title input, Edit popout opening /viewer in
  edit mode, clipboard export as .md with YAML frontmatter, manual
  tag chips + + Add tag input, header tag filter (cap 7), global
  Starred filter, `tag:xyz` search syntax.
- `deriveAutoTags` kept as empty hook for post-Task-7 LLM topic tags;
  research found all previous auto-tag chips redundant with row UI.
- Viewer window adds edit mode with debounced-save textarea; native
  title renamed to "Kon - Transcription Editor".
- Window minimums updated per GNOME HIG + WCAG reflow research:
  main 960x600, float 360x480, editor 560x520.
- Microphone picker filters raw ALSA strings (hw:, plughw:, front:,
  sysdefault:, null) and dedupes by CARD=X. New `description` field
  on DeviceInfo reads /proc/asound/cards so Blue Yeti shows as "Blue
  Microphones" instead of the short "Microphones" card name.
- GPU reporting fixed: get_runtime_capabilities now returns
  accelerators=[cpu,vulkan] and whisper.supports_gpu=true, matching
  the transcribe-rs whisper-vulkan feature linked unconditionally.
- ResizeHandles kept for macOS/Windows frameless: 12px edges, 20px
  corners via CSS vars, pointerdown + setPointerCapture, corners
  above edges in z-order, rendered as sibling (not child) of the
  animated layout root so `position: fixed` is viewport-relative.
- Dueling drag-region handlers removed — `data-tauri-drag-region` and
  manual `startDragging()` were stacked on the same elements; kept
  the manual handler which has the button/input early-return logic.

See HANDOVER.md for the full session log and deferred items.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
2026-04-19 14:30:42 +01:00

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---
name: handover-2026-04-18
type: reference
tags: [handover, session, kon]
description: Session handover — 2026/04/18 dogfooding sprint
---
# Kon Handover — 2026/04/18
## Current state
Phase 1 brand migration and Phase 2 polish are both **complete and committed**. Today was the first dogfood attempt — Vulkan GPU build is in progress but not yet confirmed working. Three bugs were caught and fixed during the first launch attempt.
## What's working
- **18/18 automated validation checks pass** (Playwright, `python3 /tmp/kon_validation.py`)
- **Pre-warm fixed** — `tauri::async_runtime::spawn` instead of `tokio::spawn`; model loads in background before first dictation
- **Preferences infinite loop fixed** — `Object.assign` mutation instead of object reassignment; Svelte 5 module state now stable
- **DOM hydration fixed** — `applyToDOM` called on store init so `data-theme` is always set, even without Tauri webview injection
- **Vulkan feature flag committed** — `whisper-vulkan` in `crates/transcription/Cargo.toml`
- **`docs/dev-setup.md`** — authoritative dependency and launch reference
## What's left
### Immediate — Vulkan GPU build
Vulkan build was not yet confirmed. Three system packages needed before it will compile:
```bash
sudo dnf install vulkan-headers vulkan-loader-devel glslc
```
Then launch:
```bash
cd /home/jake/Documents/CORBEL-Projects/kon
LIBCLANG_PATH=/usr/lib64/llvm21/lib64 npm run tauri dev
```
Confirm GPU active in startup logs:
```
whisper_backend_init_gpu: device 0: NVIDIA GeForce RTX 4070
```
### Manual validation (requires running app)
Three items from the validation checklist that need real Tauri runtime:
- [ ] Persistence test — set non-default zone/font, close, relaunch, verify zero flash
- [ ] Cross-window preferences — open float/viewer windows, check they hydrate correctly
- [ ] 90-second onboarding — fresh-model launch, first dictation under 90s
### Pre-release (before any build beyond Jake's machine)
- [ ] Updater signing key — `tauri signer generate`, public key → `tauri.conf.json`, private key → CI secrets
- [ ] ggml dedup — plan at `docs/superpowers/plans/2026-04-18-kon-ggml-dedup.md`, Option A (system-ggml shared lib), execute at Phase 3
## Gotchas discovered today
| Issue | Fix |
|---|---|
| `libclang` not on PATH | `set -Ux LIBCLANG_PATH /usr/lib64/llvm21/lib64` |
| `tokio::spawn` panics in Tauri `setup()` | Use `tauri::async_runtime::spawn` — Tokio runtime isn't live yet during setup |
| Svelte 5 `$effect` infinite loop on `updatePreferences` | Module-level `$state` must be mutated (`Object.assign`), never reassigned — stale references break loop guards |
| Duplicate theme sync `$effect` in both `+layout.svelte` and `SettingsPage.svelte` | Removed from SettingsPage — layout handles it |
| Vulkan build needs dev headers + shader compiler | `sudo dnf install vulkan-headers vulkan-loader-devel glslc` |
## Resume prompt
```
Picking up Kon dogfooding from the 2026/04/18 session.
HANDOVER is at HANDOVER.md in the project root.
First job: confirm Vulkan GPU build compiles and check startup logs for RTX 4070.
Then run the three manual validation items from the handover.
```