feat: Add complete async audio transcription workflow

Implemented full transcription system with local Whisper and OpenAI API
support. Includes comprehensive test suite (60 tests) and reorganized
keybindings for better discoverability.

Features:
- Async transcription (non-blocking workflow)
- Desktop notifications (started/complete/error)
- Output: audio.txt (transcript) + audio.log (process logs)
- Modeline integration showing active transcription count
- Dired integration (press T on audio files)
- Process management and tracking

Scripts:
- install-whisper.sh: Install Whisper via AUR or pip
- uninstall-whisper.sh: Clean removal with cache cleanup
- local-whisper: Offline transcription using installed Whisper
- oai-transcribe: Cloud transcription via OpenAI API

Tests (60 passing):
- Audio file detection (16 tests)
- Path generation logic (11 tests)
- Log cleanup behavior (5 tests)
- Duration formatting (9 tests)
- Active counter & modeline (11 tests)
- Integration workflows (8 tests)

Keybindings:
- Reorganized gcal to C-; g submenu (s/t/r/c)
- Added C-; t transcription submenu (t/b/k)
- Dired: T to transcribe file at point

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude <noreply@anthropic.com>

1 files changed, 65 insertions, 0 deletions

diff --git a/scripts/uninstall-whisper.sh b/scripts/uninstall-whisper.sh
new file mode 100755
index 00000000..e46c6ebc
--- /dev/null
+++ b/scripts/uninstall-whisper.sh
@@ -0,0 +1,65 @@
+#!/usr/bin/env bash
+# Uninstall OpenAI Whisper
+
+set -euo pipefail
+
+echo "=== Whisper Uninstallation ==="
+echo
+
+REMOVED=false
+
+# Check if installed via AUR
+if command -v yay &> /dev/null; then
+  if yay -Qi python-openai-whisper &> /dev/null 2>&1; then
+    echo "Detected AUR installation (python-openai-whisper)"
+    read -p "Remove via yay? [Y/n] " -n 1 -r
+    echo
+    if [[ $REPLY =~ ^[Yy]$ ]] || [[ -z $REPLY ]]; then
+      yay -R python-openai-whisper
+      echo "✓ Removed via AUR"
+      REMOVED=true
+    fi
+  fi
+fi
+
+# Check if installed via pip
+if pip list 2>/dev/null | grep -q openai-whisper; then
+  echo "Detected pip installation (openai-whisper)"
+  read -p "Remove via pip? [Y/n] " -n 1 -r
+  echo
+  if [[ $REPLY =~ ^[Yy]$ ]] || [[ -z $REPLY ]]; then
+    pip uninstall -y openai-whisper
+    echo "✓ Removed via pip"
+    REMOVED=true
+  fi
+fi
+
+if [[ "$REMOVED" == false ]]; then
+  echo "No whisper installation found (checked AUR and pip)"
+fi
+
+# Ask about ffmpeg
+echo
+read -p "Remove ffmpeg? (may be used by other apps) [y/N] " -n 1 -r
+echo
+if [[ $REPLY =~ ^[Yy]$ ]]; then
+  sudo pacman -R ffmpeg
+  echo "✓ Removed ffmpeg"
+fi
+
+# Ask about model cache
+CACHE_DIR="$HOME/.cache/whisper"
+if [[ -d "$CACHE_DIR" ]]; then
+  echo
+  echo "Whisper models are cached in: $CACHE_DIR"
+  du -sh "$CACHE_DIR" 2>/dev/null || echo "Size: unknown"
+  read -p "Delete cached models? [y/N] " -n 1 -r
+  echo
+  if [[ $REPLY =~ ^[Yy]$ ]]; then
+    rm -rf "$CACHE_DIR"
+    echo "✓ Deleted model cache"
+  fi
+fi
+
+echo
+echo "=== Uninstallation Complete ==="