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>

src/lib/components/HotkeyRecorder.svelte

@@ -6,16 +6,17 @@
 
   const modifierKeys = new Set(["Control", "Shift", "Alt", "Meta"]);
 
-  function startRecording() {
-    recording = true;
-    captured = false;
-  }
-
   function handleKeyDown(e) {
+    // Capture-phase listener; guard still belts-and-braces.
     if (!recording) return;
     e.preventDefault();
     e.stopPropagation();
 
+    if (e.key === "Escape") {
+      recording = false;
+      return;
+    }
+
     // Wait for a non-modifier key
     if (modifierKeys.has(e.key)) return;
 
@@ -39,8 +40,21 @@
     setTimeout(() => { captured = false; }, 1500);
   }
 
-  function handleBlur() {
-    recording = false;
+  // Register the listener only while recording, at the capture phase so no
+  // descendant handler (or the parent layout's svelte:window keydown) can
+  // swallow the event first. Button-level onkeydown would require the
+  // button to hold keyboard focus after a click, which webkit2gtk on Linux
+  // does not guarantee.
+  $effect(() => {
+    if (!recording) return;
+    const handler = handleKeyDown;
+    document.addEventListener("keydown", handler, { capture: true });
+    return () => document.removeEventListener("keydown", handler, { capture: true });
+  });
+
+  function startRecording() {
+    recording = true;
+    captured = false;
   }
 
   let chips = $derived(settings.globalHotkey.split("+"));
@@ -55,8 +69,6 @@
         : 'bg-bg-input border-border hover:border-border'}
     border transition-all"
   onclick={startRecording}
-  onkeydown={handleKeyDown}
-  onblur={handleBlur}
   aria-label="Record hotkey"
 >
   {#if recording}

src/lib/components/ResizeHandles.svelte

@@ -0,0 +1,141 @@
+<script>
+  // Invisible resize-handle overlays around each Kon window edge.
+  // Needed because Kon runs with `decorations: false`, so the WM
+  // provides no resize affordance on KDE/GNOME Wayland.
+  //
+  // Architecture: eight fixed-position divs are the click target for
+  // resize. Because the divs themselves are the event target (not any
+  // ancestor), Tauri's `data-tauri-drag-region` delegated handler walks
+  // the div's ancestors, finds no drag-region, and does not start a
+  // window move. This gives us a clean separation: resize wins on the
+  // edges, drag wins on the titlebar.
+  //
+  // Hit zone sizes come from CSS custom properties so every Kon window
+  // across the app stays identical. See `--kon-resize-edge` and
+  // `--kon-resize-corner` in app.css.
+  //
+  // Placement requirement: instances of this component MUST be mounted
+  // as a sibling of the animated/transformed layout root (not a child),
+  // or `position: fixed` becomes relative to that transformed ancestor
+  // instead of the viewport.
+
+  import { getCurrentWindow } from "@tauri-apps/api/window";
+  import { hasTauriRuntime } from "$lib/utils/runtime.js";
+
+  const enabled = hasTauriRuntime();
+
+  async function startResize(e, direction) {
+    if (!enabled) return;
+    if (e.button !== 0) return;
+    e.preventDefault();
+    e.stopPropagation();
+    // Lock the pointer to this handle BEFORE asking Wayland to begin a
+    // resize. Without capture, KWin's xdg_toplevel.resize grab arrives
+    // between mousedown synthesis and pointer movement, often losing the
+    // diagonal component and collapsing a corner drag to a single axis.
+    // pointerdown + setPointerCapture keeps the direction pinned.
+    try {
+      e.currentTarget?.setPointerCapture?.(e.pointerId);
+    } catch {}
+    try {
+      await getCurrentWindow().startResizeDragging(direction);
+    } catch {}
+  }
+</script>
+
+{#if enabled}
+  <!-- Edge strips. Inset by corner size so edge and corner zones don't overlap. -->
+  <div class="kon-rh kon-rh-n" onpointerdown={(e) => startResize(e,"North")}></div>
+  <div class="kon-rh kon-rh-s" onpointerdown={(e) => startResize(e,"South")}></div>
+  <div class="kon-rh kon-rh-w" onpointerdown={(e) => startResize(e,"West")}></div>
+  <div class="kon-rh kon-rh-e" onpointerdown={(e) => startResize(e,"East")}></div>
+
+  <!-- Corner hit zones, larger for easier diagonal targeting. -->
+  <div class="kon-rh kon-rh-nw" onpointerdown={(e) => startResize(e,"NorthWest")}></div>
+  <div class="kon-rh kon-rh-ne" onpointerdown={(e) => startResize(e,"NorthEast")}></div>
+  <div class="kon-rh kon-rh-sw" onpointerdown={(e) => startResize(e,"SouthWest")}></div>
+  <div class="kon-rh kon-rh-se" onpointerdown={(e) => startResize(e,"SouthEast")}></div>
+{/if}
+
+<style>
+  .kon-rh {
+    position: fixed;
+    z-index: 2147483646;
+    background: transparent;
+    pointer-events: auto;
+    /* Prevent the browser from consuming the pointerdown for its own
+       defaults (text selection, drag scroll) before we capture it. */
+    touch-action: none;
+    user-select: none;
+    -webkit-user-select: none;
+  }
+
+  /* Corners stack above edges so, at the 1-2 px of overlap on some
+     compositors, a corner click is never mistaken for an edge click. */
+  .kon-rh-nw,
+  .kon-rh-ne,
+  .kon-rh-sw,
+  .kon-rh-se {
+    z-index: 2147483647;
+  }
+
+  /* Edges */
+  .kon-rh-n {
+    top: 0;
+    left: var(--kon-resize-corner);
+    right: var(--kon-resize-corner);
+    height: var(--kon-resize-edge);
+    cursor: n-resize;
+  }
+  .kon-rh-s {
+    bottom: 0;
+    left: var(--kon-resize-corner);
+    right: var(--kon-resize-corner);
+    height: var(--kon-resize-edge);
+    cursor: s-resize;
+  }
+  .kon-rh-w {
+    top: var(--kon-resize-corner);
+    bottom: var(--kon-resize-corner);
+    left: 0;
+    width: var(--kon-resize-edge);
+    cursor: w-resize;
+  }
+  .kon-rh-e {
+    top: var(--kon-resize-corner);
+    bottom: var(--kon-resize-corner);
+    right: 0;
+    width: var(--kon-resize-edge);
+    cursor: e-resize;
+  }
+
+  /* Corners */
+  .kon-rh-nw {
+    top: 0;
+    left: 0;
+    width: var(--kon-resize-corner);
+    height: var(--kon-resize-corner);
+    cursor: nw-resize;
+  }
+  .kon-rh-ne {
+    top: 0;
+    right: 0;
+    width: var(--kon-resize-corner);
+    height: var(--kon-resize-corner);
+    cursor: ne-resize;
+  }
+  .kon-rh-sw {
+    bottom: 0;
+    left: 0;
+    width: var(--kon-resize-corner);
+    height: var(--kon-resize-corner);
+    cursor: sw-resize;
+  }
+  .kon-rh-se {
+    bottom: 0;
+    right: 0;
+    width: var(--kon-resize-corner);
+    height: var(--kon-resize-corner);
+    cursor: se-resize;
+  }
+</style>

src/lib/components/Titlebar.svelte

@@ -22,6 +22,7 @@
   function handleDragStart(e) {
     if (e.button !== 0) return;
     if (e.target.closest("button")) return;
+    try { e.currentTarget?.setPointerCapture?.(e.pointerId); } catch {}
     getCurrentWindow().startDragging();
   }
 
@@ -38,20 +39,18 @@
 <div
   class="flex items-center select-none bg-sidebar border-b border-border-subtle
     {compact ? 'h-[28px]' : 'h-[32px]'}"
-  onmousedown={handleDragStart}
-  data-tauri-drag-region
+  onpointerdown={handleDragStart}
 >
   {#if !compact}
     <!-- Left spacer: aligns with sidebar width -->
     <div
       class="transition-all {settings.sidebarCollapsed ? 'w-[48px] min-w-[48px]' : 'w-[210px] min-w-[210px]'}"
       style="transition-duration: var(--duration-ui)"
-      data-tauri-drag-region
     ></div>
   {/if}
 
   <!-- Centre: drag area -->
-  <div class="flex-1" data-tauri-drag-region></div>
+  <div class="flex-1"></div>
 
   <!-- Window controls -->
   <div class="flex items-center h-full">

src/lib/pages/HistoryPage.svelte

@@ -4,6 +4,9 @@
   import { history, saveHistory, deleteFromHistory, renameHistoryEntry } from "$lib/stores/page.svelte.js";
   import { toasts } from "$lib/stores/toasts.svelte.js";
   import { convertFileSrc } from "@tauri-apps/api/core";
+  import {
+    deriveAutoTags, buildFrontmatter, buildMarkdown, normaliseTag,
+  } from "$lib/utils/frontmatter.js";
   import { getPreferences } from "$lib/stores/preferences.svelte.js";
   import { clampTextLines, measurePreWrap } from "$lib/utils/textMeasure.js";
   import { bodyPretextLineHeight, pretextFontShorthand } from "$lib/utils/accessibilityTypography.js";
@@ -12,12 +15,14 @@
   import EmptyState from "$lib/components/EmptyState.svelte";
   import { formatTime, formatDuration } from "$lib/utils/time.js";
   import { PLAYBACK_SPEEDS } from "$lib/utils/constants.js";
-  import { Search, Clock, Play, Pause, FileText, Mic, ChevronDown } from 'lucide-svelte';
+  import { Search, Clock, Play, Pause, FileText, Mic, ChevronDown, ExternalLink, Star } from 'lucide-svelte';
 
   const prefs = getPreferences();
   const COLLAPSED_ROW_MIN_HEIGHT = 54;
   const COLLAPSED_ROW_VERTICAL_PADDING = 24;
   const EXPANDED_BASE_HEIGHT = 92;
+  const EXPANDED_TITLE_INPUT_HEIGHT = 48;
+  const EXPANDED_TAGS_ROW_HEIGHT = 40;
   const AUDIO_PLAYER_HEIGHT = 54;
   const HISTORY_PREVIEW_LINES = 2;
   const HISTORY_DURATION_WIDTH = 48;
@@ -31,6 +36,8 @@
   const BUFFER_COUNT = 6;
 
   let searchQuery = $state("");
+  let showStarredOnly = $state(false);
+  let activeTagFilter = $state(null); // null = all; string = tag value
   let expandedId = $state(null);
   let playingId = $state(null);
   let audioEl = $state(null);
@@ -47,25 +54,70 @@
     stopPlayback();
   });
 
-  let filtered = $derived(
-    searchQuery
-      ? history.filter((h) => {
-          const q = searchQuery.toLowerCase();
-          return (
-            (h.text && h.text.toLowerCase().includes(q)) ||
-            (h.preview && h.preview.toLowerCase().includes(q)) ||
-            (h.source && h.source.toLowerCase().includes(q)) ||
-            (h.title && h.title.toLowerCase().includes(q))
-          );
-        })
-      : history
-  );
+  function itemHasStar(h) {
+    if (Array.isArray(h?.segments)) {
+      return h.segments.some((s) => s?.starred);
+    }
+    return Boolean(h?.starred);
+  }
+
+  function itemAllTags(h) {
+    const auto = deriveAutoTags(h);
+    const manual = Array.isArray(h?.manualTags) ? h.manualTags : [];
+    return [...auto, ...manual];
+  }
+
+  function parseTagFilter(q) {
+    // Matches `tag:value` anywhere in the query; returns { tag, rest }.
+    const match = q.match(/(?:^|\s)tag:([^\s]+)/i);
+    if (!match) return { tag: null, rest: q };
+    const rest = (q.slice(0, match.index) + " " + q.slice(match.index + match[0].length)).trim();
+    return { tag: match[1].toLowerCase(), rest };
+  }
+
+  let searchParsed = $derived(parseTagFilter(searchQuery || ""));
+
+  let allTags = $derived.by(() => {
+    const counts = new Map();
+    for (const h of history) {
+      for (const tag of itemAllTags(h)) {
+        const t = tag.toLowerCase();
+        counts.set(t, (counts.get(t) || 0) + 1);
+      }
+    }
+    return Array.from(counts.entries())
+      .sort((a, b) => b[1] - a[1] || a[0].localeCompare(b[0]))
+      .map(([tag, count]) => ({ tag, count }));
+  });
+
+  let filtered = $derived.by(() => {
+    let items = history;
+    if (showStarredOnly) items = items.filter(itemHasStar);
+    if (activeTagFilter) {
+      items = items.filter((h) => itemAllTags(h).some((t) => t.toLowerCase() === activeTagFilter));
+    }
+    if (searchParsed.tag) {
+      items = items.filter((h) => itemAllTags(h).some((t) => t.toLowerCase() === searchParsed.tag));
+    }
+    const q = searchParsed.rest.trim().toLowerCase();
+    if (q) {
+      items = items.filter((h) => (
+        (h.text && h.text.toLowerCase().includes(q)) ||
+        (h.preview && h.preview.toLowerCase().includes(q)) ||
+        (h.source && h.source.toLowerCase().includes(q)) ||
+        (h.title && h.title.toLowerCase().includes(q))
+      ));
+    }
+    return items;
+  });
 
   let historyTextFont = $derived(pretextFontShorthand(prefs.accessibility, 13));
   let historyLineHeight = $derived(bodyPretextLineHeight(prefs.accessibility, 13));
 
   function compactPreviewText(item) {
-    return item.title || item.preview || item.text || "";
+    // The compact row shows the title (or a placeholder). The transcript
+    // body lives in the expanded drawer so the two are visually distinct.
+    return item.title?.trim() || "Untitled";
   }
 
   let compactPreviews = $derived.by(() => {
@@ -123,10 +175,11 @@
       );
       let height = compactHeight;
       if (expandedId === item.id) {
+        height += EXPANDED_BASE_HEIGHT + EXPANDED_TITLE_INPUT_HEIGHT + EXPANDED_TAGS_ROW_HEIGHT;
         const transcriptHeight = item.text && textWidth > 0
           ? measurePreWrap(item.text, historyTextFont, textWidth, historyLineHeight).height
           : historyLineHeight;
-        height += transcriptHeight + EXPANDED_BASE_HEIGHT;
+        height += transcriptHeight;
         if (item.audioPath && playingId === item.id) {
           height += AUDIO_PLAYER_HEIGHT;
         }
@@ -192,27 +245,6 @@
     }
   }
 
-  async function renameItem(item) {
-    const name = prompt("Name this transcript:", item.title || "");
-    if (name === null) return;
-
-    const trimmed = name.trim();
-    item.title = trimmed;
-    item.preview = trimmed ? `${trimmed} — ${item.text.slice(0, 80)}` : item.text.slice(0, 120);
-
-    // Persist via the dual-write helper. Updates SQLite + localStorage and
-    // surfaces a toast on failure (Day 4 of the upgrade plan, closes
-    // architecture-review.md §13).
-    try {
-      await renameHistoryEntry(item.id, { title: trimmed });
-    } catch (err) {
-      toasts.warn(
-        "Rename did not persist",
-        "Your change is visible now but did not save. It may revert on next launch."
-      );
-    }
-  }
-
   function togglePlay(item) {
     if (playingId === item.id) {
       if (audioEl && !audioEl.paused) {
@@ -276,9 +308,57 @@
   async function openViewer(item) {
     try {
       localStorage.setItem("kon_viewer_item", JSON.stringify(item));
+      localStorage.setItem("kon_viewer_mode", "view");
       await invoke("open_viewer_window");
     } catch {
       localStorage.setItem("kon_viewer_item", JSON.stringify(item));
+      localStorage.setItem("kon_viewer_mode", "view");
+      window.open("/viewer", "_blank", "width=600,height=700");
+    }
+  }
+
+  function handleAddTagKey(e, item) {
+    if (e.key !== "Enter" && e.key !== ",") return;
+    e.preventDefault();
+    const raw = e.target.value || "";
+    const next = normaliseTag(raw);
+    if (!next) return;
+    const existing = new Set((item.manualTags || []).map((t) => normaliseTag(t)));
+    if (existing.has(next)) {
+      e.target.value = "";
+      return;
+    }
+    item.manualTags = [...(item.manualTags || []), next];
+    saveHistory();
+    e.target.value = "";
+  }
+
+  function removeManualTag(item, tag) {
+    const t = normaliseTag(tag);
+    item.manualTags = (item.manualTags || []).filter((x) => normaliseTag(x) !== t);
+    saveHistory();
+  }
+
+  async function exportMarkdown(item) {
+    const md = buildMarkdown(item);
+    try {
+      await navigator.clipboard.writeText(md);
+    } catch {
+      try {
+        await invoke("copy_to_clipboard", { text: md });
+      } catch {}
+    }
+    toasts.info("Markdown copied to clipboard — paste into Obsidian or save as .md");
+  }
+
+  async function openEditor(item) {
+    try {
+      localStorage.setItem("kon_viewer_item", JSON.stringify(item));
+      localStorage.setItem("kon_viewer_mode", "edit");
+      await invoke("open_viewer_window");
+    } catch {
+      localStorage.setItem("kon_viewer_item", JSON.stringify(item));
+      localStorage.setItem("kon_viewer_mode", "edit");
       window.open("/viewer", "_blank", "width=600,height=700");
     }
   }
@@ -308,6 +388,16 @@
     <h2 class="font-display text-[26px] italic text-text">History</h2>
     <span class="text-[11px] text-text-tertiary mt-1">{history.length} saved</span>
     <div class="flex-1"></div>
+    <button
+      class="inline-flex items-center gap-1.5 btn-md rounded-lg
+        {showStarredOnly ? 'text-accent bg-accent/10' : 'text-text-tertiary hover:text-text-secondary hover:bg-hover'}"
+      onclick={() => (showStarredOnly = !showStarredOnly)}
+      aria-pressed={showStarredOnly}
+      title={showStarredOnly ? "Showing starred only (click to show all)" : "Show starred only"}
+    >
+      <Star size={14} aria-hidden="true" />
+      <span class="text-[11px]">Starred</span>
+    </button>
     {#if history.length > 0}
       <button
         class="btn-md rounded-lg text-text-tertiary hover:text-danger hover:bg-hover"
@@ -319,13 +409,13 @@
   </div>
 
   <!-- Search -->
-  <div class="px-7 pb-4">
+  <div class="px-7 pb-3">
     <Card>
       <div class="flex items-center gap-3 px-4 py-2.5">
         <Search size={16} class="text-text-tertiary flex-shrink-0" aria-hidden="true" />
         <input
           class="flex-1 bg-transparent text-text text-[13px] placeholder:text-text-tertiary focus:outline-none"
-          placeholder="Search all transcripts..."
+          placeholder="Search all transcripts... (try tag:meetings)"
           bind:value={searchQuery}
           data-no-transition
         />
@@ -340,6 +430,33 @@
     </Card>
   </div>
 
+  <!-- Tag chip filter bar -->
+  {#if allTags.length > 0}
+    <div class="px-7 pb-3 flex items-center gap-1.5 flex-wrap">
+      <span class="text-[10px] uppercase tracking-wider text-text-tertiary mr-1">Tags</span>
+      {#if activeTagFilter}
+        <button
+          class="inline-flex items-center gap-1 px-2 py-0.5 rounded-full border border-accent text-[10px] text-accent bg-accent/10"
+          onclick={() => (activeTagFilter = null)}
+          title="Clear tag filter"
+        >
+          {activeTagFilter}
+          <span class="text-[12px] leading-none">×</span>
+        </button>
+      {:else}
+        {#each allTags.slice(0, 7) as t (t.tag)}
+          <button
+            class="inline-flex items-center gap-1 px-2 py-0.5 rounded-full border border-border-subtle text-[10px] text-text-secondary hover:border-accent hover:text-accent"
+            onclick={() => (activeTagFilter = t.tag)}
+          >
+            {t.tag}
+            <span class="text-[9px] text-text-tertiary">{t.count}</span>
+          </button>
+        {/each}
+      {/if}
+    </div>
+  {/if}
+
   <!-- History list -->
   <div class="flex-1 px-7 pb-4 min-h-0">
     <Card classes="h-full flex flex-col overflow-hidden">
@@ -456,6 +573,48 @@
                       </div>
                     {/if}
 
+                    <!-- Inline title input -->
+                    <input
+                      type="text"
+                      class="w-full bg-bg-input border border-border rounded-lg px-3 py-2 text-[12px]
+                             text-text placeholder:text-text-tertiary focus:outline-none focus:border-accent mb-3"
+                      placeholder="Name this transcript..."
+                      value={item.title || ""}
+                      oninput={(e) => { item.title = e.target.value; }}
+                      onblur={() => renameHistoryEntry(item.id, { title: (item.title || "").trim() }).catch(() => {})}
+                      onclick={(e) => e.stopPropagation()}
+                      data-no-transition
+                    />
+
+                    <!-- Tags: auto + manual -->
+                    <div class="flex items-center gap-1.5 flex-wrap mb-3" onclick={(e) => e.stopPropagation()} role="presentation">
+                      {#each deriveAutoTags(item) as t (t)}
+                        <span
+                          class="inline-flex items-center px-2 py-0.5 rounded-full text-[10px] bg-bg-input text-text-tertiary border border-border-subtle"
+                          title="Auto-generated tag"
+                        >{t}</span>
+                      {/each}
+                      {#each (item.manualTags || []) as t (t)}
+                        <span class="inline-flex items-center gap-1 px-2 py-0.5 rounded-full text-[10px] bg-accent/10 text-accent border border-accent/30">
+                          {t}
+                          <button
+                            class="text-[12px] leading-none hover:text-danger"
+                            onclick={() => removeManualTag(item, t)}
+                            title="Remove tag"
+                            aria-label="Remove tag {t}"
+                          >×</button>
+                        </span>
+                      {/each}
+                      <input
+                        type="text"
+                        class="bg-bg-input border border-border rounded-full px-2 py-0.5 text-[10px]
+                               text-text placeholder:text-text-tertiary focus:outline-none focus:border-accent w-[110px]"
+                        placeholder="+ add tag"
+                        onkeydown={(e) => handleAddTagKey(e, item)}
+                        data-no-transition
+                      />
+                    </div>
+
                     <!-- Full transcript -->
                     <p class="text-[13px] text-text whitespace-pre-wrap mb-4" style="line-height: {historyLineHeight}px">{item.text}</p>
 
@@ -464,13 +623,23 @@
                       <button
                         class="text-[11px] px-3 py-1.5 rounded-lg bg-hover text-text-secondary hover:text-text"
                         style="transition-duration: var(--duration-ui)"
-                        onclick={(e) => { e.stopPropagation(); renameItem(item); }}
-                      >Rename</button>
+                        onclick={(e) => { e.stopPropagation(); copyItem(item); }}
+                      >Copy</button>
+                      <button
+                        class="inline-flex items-center gap-1.5 text-[11px] px-3 py-1.5 rounded-lg bg-hover text-text-secondary hover:text-text"
+                        style="transition-duration: var(--duration-ui)"
+                        onclick={(e) => { e.stopPropagation(); openEditor(item); }}
+                        title="Open transcript in a popout editor"
+                      >
+                        Edit
+                        <ExternalLink size={11} aria-hidden="true" />
+                      </button>
                       <button
                         class="text-[11px] px-3 py-1.5 rounded-lg bg-hover text-text-secondary hover:text-text"
                         style="transition-duration: var(--duration-ui)"
-                        onclick={(e) => { e.stopPropagation(); copyItem(item); }}
-                      >Copy</button>
+                        onclick={(e) => { e.stopPropagation(); exportMarkdown(item); }}
+                        title="Export this transcript as a Markdown file with YAML frontmatter"
+                      >Export .md</button>
                       {#if item.audioPath && item.segments && item.segments.length > 0}
                         <button
                           class="text-[11px] px-3 py-1.5 rounded-lg bg-hover text-accent hover:text-accent-hover"

src/lib/pages/SettingsPage.svelte

@@ -34,6 +34,64 @@
   let audioDevices = $state([]);
   let audioDevicesError = $state(null);
 
+  // ALSA enumeration leaks raw device strings (hw:, plughw:, front:,
+  // sysdefault:, back:, surround:, iec958:, dmix:, usbstream:, plus a
+  // bogus "null" device). These are kernel-level aliases — no user
+  // needs to pick between "hw:CARD=2,DEV=0" and "plughw:CARD=2,DEV=0".
+  //
+  // The strategy: keep a small set of well-known sentinel devices
+  // (default/pipewire/pulse), then pull a single entry per unique
+  // sound card by parsing CARD=X from the sysdefault: alias. That
+  // gives us "Microphones" / "C920" / "Generic" as friendly labels
+  // while mapping them to a reliable ALSA path.
+  const SENTINEL_DEVICES = new Set(["default", "pipewire", "pulse"]);
+
+  function parseCardName(name) {
+    const match = String(name || "").match(/CARD=([^,]+)/);
+    return match ? match[1] : null;
+  }
+
+  function buildVisibleDevices(devices) {
+    const out = [];
+    const seenCards = new Set();
+
+    for (const dev of devices) {
+      const name = dev?.name || "";
+      if (!name || name === "null") continue;
+      if (SENTINEL_DEVICES.has(name)) {
+        out.push(dev);
+        continue;
+      }
+      if (name.startsWith("sysdefault:CARD=")) {
+        const card = parseCardName(name);
+        if (card && !seenCards.has(card)) {
+          seenCards.add(card);
+          out.push(dev);
+        }
+      }
+      // Everything else (hw:, plughw:, front:, dmix:, etc.) is silently
+      // dropped — cpal will resolve the sysdefault:CARD= form fine.
+    }
+    return out;
+  }
+
+  function friendlyLabel(dev) {
+    const name = dev?.name || "";
+    if (name === "default") return "System default";
+    if (name === "pipewire") return "PipeWire";
+    if (name === "pulse") return "PulseAudio";
+    // Prefer the rich product description from /proc/asound/cards
+    // (e.g. "Blue Microphones" for the Yeti). Falls back to the raw
+    // CARD=X short name if we couldn't load descriptions.
+    const desc = (dev?.description || "").trim();
+    if (desc) return desc;
+    const card = parseCardName(name);
+    if (card) return card;
+    return name;
+  }
+
+  let visibleAudioDevices = $derived(buildVisibleDevices(audioDevices));
+
   async function refreshAudioDevices() {
     audioDevicesError = null;
     try {
@@ -448,11 +506,9 @@
                   onfocus={refreshAudioDevices}
                 >
                   <option value="">Auto (recommended) — let Kon pick the working mic</option>
-                  {#each audioDevices as dev}
+                  {#each visibleAudioDevices as dev}
                     <option value={dev.name} disabled={dev.is_likely_monitor}>
-                      {dev.name}
-                      {dev.is_default ? " (system default)" : ""}
-                      {dev.is_likely_monitor ? " — speaker monitor, skip" : ""}
+                      {friendlyLabel(dev)}{#if dev.is_default && dev.name !== "default"} (system default){/if}{#if dev.is_likely_monitor} — speaker monitor, skip{/if}
                     </option>
                   {/each}
                 </select>
@@ -464,7 +520,7 @@
               </div>
               {#if audioDevicesError}
                 <p class="text-[11px] text-error mt-2">{audioDevicesError}</p>
-              {:else if audioDevices.length === 0}
+              {:else if visibleAudioDevices.length === 0}
                 <p class="text-[11px] text-text-tertiary mt-2">No input devices detected. Check that a microphone is connected and PulseAudio/PipeWire is running.</p>
               {:else}
                 <p class="text-[11px] text-text-tertiary mt-2">

src/lib/stores/page.svelte.js

@@ -99,6 +99,20 @@ function loadHistory() {
 
 export const history = $state(loadHistory());
 
+// Keep the in-memory history in sync with edits made by sibling windows
+// (e.g. the viewer saving a cleaned-up transcript). Storage events fire
+// only on *other* windows than the writer, so we won't re-enter our own
+// writes.
+if (typeof window !== "undefined") {
+  window.addEventListener("storage", (e) => {
+    if (e.key !== HISTORY_KEY || !e.newValue) return;
+    try {
+      const next = JSON.parse(e.newValue);
+      history.splice(0, history.length, ...next);
+    } catch {}
+  });
+}
+
 export function saveHistory() {
   try {
     localStorage.setItem(HISTORY_KEY, JSON.stringify(history));

src/lib/stores/preferences.svelte.js

@@ -1,7 +1,27 @@
 // src/lib/stores/preferences.svelte.js
 import { invoke } from '@tauri-apps/api/core';
+import { emit } from '@tauri-apps/api/event';
+import { getCurrentWindow } from '@tauri-apps/api/window';
 import { toasts } from './toasts.svelte.js';
 
+export const PREFERENCES_CHANGED_EVENT = 'kon:preferences-changed';
+
+function currentWindowLabel() {
+  try {
+    return getCurrentWindow().label;
+  } catch {
+    return null;
+  }
+}
+
+function broadcastPreferences(prefs) {
+  const source = currentWindowLabel();
+  if (source === null) return;
+  // Fire-and-forget — cross-window sync must never block the local apply path.
+  emit(PREFERENCES_CHANGED_EVENT, { source, prefs: JSON.parse(JSON.stringify(prefs)) })
+    .catch(() => {});
+}
+
 const DEFAULTS = {
   theme: 'dark',
   zone: 'default',
@@ -117,12 +137,25 @@ export function updatePreferences(updates) {
   Object.assign(preferences, updates);
   applyToDOM(preferences);
   persistToSQLite(preferences);
+  broadcastPreferences(preferences);
 }
 
 export function updateAccessibility(updates) {
   Object.assign(preferences.accessibility, updates);
   applyToDOM(preferences);
   persistToSQLite(preferences);
+  broadcastPreferences(preferences);
+}
+
+// Apply preferences received from another Tauri window. Mutates local state
+// and DOM only — never persists or re-broadcasts, so there is no echo loop.
+export function applyExternalPreferences(prefs) {
+  if (!prefs || typeof prefs !== 'object') return;
+  Object.assign(preferences, prefs);
+  if (prefs.accessibility) {
+    Object.assign(preferences.accessibility, prefs.accessibility);
+  }
+  applyToDOM(preferences);
 }
 
 // Re-resolve when OS preferences change

src/lib/utils/frontmatter.js

@@ -0,0 +1,142 @@
+// Transcript frontmatter + auto-tag derivation.
+//
+// A transcript's "frontmatter" is a flat object of metadata that can be
+// exported as YAML for Obsidian or other Markdown consumers. Auto-tags are
+// derived deterministically from existing fields (date, duration, source,
+// text length) so they stay in sync without migration.
+//
+// Storage model:
+//   - Source of truth is the existing transcript fields (id, title, date,
+//     duration, source, text, segments).
+//   - Manual tags live on `item.manualTags: string[]`.
+//   - Auto-tags are never stored — derived on demand.
+
+const DURATION_BUCKETS = [
+  { max: 60, tag: "duration:short" },      // < 1 minute
+  { max: 300, tag: "duration:medium" },    // < 5 minutes
+  { max: 1800, tag: "duration:long" },     // < 30 minutes
+  { max: Infinity, tag: "duration:very-long" },
+];
+
+const WORD_BUCKETS = [
+  { max: 50, tag: "words:short" },
+  { max: 300, tag: "words:medium" },
+  { max: 1500, tag: "words:long" },
+  { max: Infinity, tag: "words:very-long" },
+];
+
+function durationTag(seconds) {
+  if (!Number.isFinite(seconds) || seconds <= 0) return null;
+  return DURATION_BUCKETS.find((b) => seconds < b.max)?.tag ?? null;
+}
+
+function wordCountTag(text) {
+  if (!text || typeof text !== "string") return null;
+  const count = text.trim().split(/\s+/).filter(Boolean).length;
+  return WORD_BUCKETS.find((b) => count < b.max)?.tag ?? null;
+}
+
+// Resolve time-of-day bucket from an ISO date or a legacy string like
+// "19/04/2026, 11:37:23". Thresholds are fixed and local to the user's
+// machine — hour 6-11 morning, 12-17 afternoon, 18-21 evening, else night.
+function timeOfDayTag(dateStr) {
+  if (!dateStr) return null;
+  let ts = Date.parse(dateStr);
+  if (Number.isNaN(ts)) {
+    // Try DD/MM/YYYY, HH:MM:SS (UK local format used by Kon history rows).
+    const match = String(dateStr).match(
+      /(\d{1,2})\/(\d{1,2})\/(\d{4})[,\s]+(\d{1,2}):(\d{2})(?::(\d{2}))?/,
+    );
+    if (!match) return null;
+    const [, dd, mm, yyyy, hh, min, ss] = match;
+    const d = new Date(
+      Number(yyyy), Number(mm) - 1, Number(dd),
+      Number(hh), Number(min), Number(ss || 0),
+    );
+    ts = d.getTime();
+  }
+  const hour = new Date(ts).getHours();
+  if (hour >= 6 && hour < 12) return "time:morning";
+  if (hour >= 12 && hour < 18) return "time:afternoon";
+  if (hour >= 18 && hour < 22) return "time:evening";
+  return "time:night";
+}
+
+function sourceTag(source) {
+  if (!source) return null;
+  const s = String(source).toLowerCase();
+  if (s.includes("file")) return "source:file";
+  if (s.includes("live") || s.includes("mic")) return "source:live";
+  return `source:${s.replace(/[^a-z0-9-]+/g, "-").replace(/^-|-$/g, "")}`;
+}
+
+// Returns tags to display as chips. Intentionally empty by default: the
+// metadata these tags used to encode (duration, date, source, starred) is
+// already shown elsewhere in the History row, so chips would duplicate
+// information and add cognitive load without improving retrieval. The
+// function is kept as a hook for one future AI-derived content tag
+// (`topic:*`) once kon-llm wires up real llama-cpp-2 in Phase 3.
+export function deriveAutoTags(_item) {
+  return [];
+}
+
+export function normaliseTag(raw) {
+  return String(raw || "").trim().toLowerCase().replace(/\s+/g, "-");
+}
+
+// Build the flat frontmatter object that represents a transcript's metadata.
+// Shown in the expanded History row and serialised when exporting to .md.
+export function buildFrontmatter(item) {
+  if (!item) return {};
+  const auto = deriveAutoTags(item);
+  const manual = Array.isArray(item.manualTags) ? item.manualTags : [];
+  const tags = Array.from(new Set([...auto, ...manual.map(normaliseTag)])).filter(Boolean);
+  const wordCount = item.text ? item.text.trim().split(/\s+/).filter(Boolean).length : 0;
+  return {
+    id: item.id,
+    title: item.title || null,
+    date: item.createdAt || item.date || null,
+    duration_s: Number.isFinite(item.duration) ? item.duration : null,
+    source: item.source || null,
+    word_count: wordCount,
+    tags,
+  };
+}
+
+// Escape a YAML scalar. Keeps things simple — quote if it contains any
+// character that would otherwise need escaping in plain scalars.
+function yamlScalar(value) {
+  if (value === null || value === undefined) return "null";
+  if (typeof value === "number" || typeof value === "boolean") return String(value);
+  const s = String(value);
+  if (s === "") return '""';
+  if (/^[A-Za-z0-9._/:\- ]+$/.test(s) && !/^\s|\s$/.test(s)) return s;
+  return `"${s.replace(/\\/g, "\\\\").replace(/"/g, '\\"')}"`;
+}
+
+export function serialiseFrontmatter(fm) {
+  const lines = ["---"];
+  for (const [key, value] of Object.entries(fm)) {
+    if (Array.isArray(value)) {
+      if (value.length === 0) {
+        lines.push(`${key}: []`);
+      } else {
+        lines.push(`${key}:`);
+        for (const v of value) lines.push(`  - ${yamlScalar(v)}`);
+      }
+    } else {
+      lines.push(`${key}: ${yamlScalar(value)}`);
+    }
+  }
+  lines.push("---");
+  return lines.join("\n");
+}
+
+// Produce an Obsidian-flavoured markdown document for a transcript.
+export function buildMarkdown(item) {
+  const fm = buildFrontmatter(item);
+  const header = serialiseFrontmatter(fm);
+  const title = fm.title || "Transcript";
+  const body = item?.text || "";
+  return `${header}\n\n# ${title}\n\n${body}\n`;
+}