Phase 3 (#3)

* Phase  3

* feat(audio): Enhance audio device management and selection

- Implemented functionality to list available speaker and microphone devices.
- Updated audio capture to allow selection of specific speaker and microphone devices.
- Added UI components for selecting audio devices in the ActiveMeeting page.
- Refactored audio capture commands to support new device listing methods.
- Improved error handling and logging for audio device operations.
- Deprecated the previous method for listing audio devices in favor of more specific methods.

* feat(transcription): Implement lazy loading of transcripts in MeetingHistory

* fix(tests): Skip device listing test if PulseAudio is unavailable in CI

* fix(audio): Skip Property Store access in test environments to avoid access violations

* feat: Add Groq LLM service adapter and integrate with existing LLM command structure

- Implement GroqService for interacting with Groq's API, including model fetching and text generation.
- Update LLM service module to include Groq as a provider.
- Enhance OpenAIService for better model context window estimation.
- Create Tauri commands for managing LLM services, including fetching models and generating insights.
- Introduce prompt templates for various insight types to standardize prompt generation.
- Add frontend API bindings for generating insights and managing prompts.

* fix(transcription): Remove unnecessary result assignment in startTranscription function

* feat(mocks): Add delete_transcripts and delete_insights methods to MockStorage

Author: srprasanna

.claude/settings.local.json

@@ -3,7 +3,8 @@
     "allow": [
       "Bash(cargo build:*)",
       "Bash(npm run build)",
-      "Bash(cargo check:*)"
+      "Bash(cargo check:*)",
+      "Bash(npm run check:*)"
     ],
     "deny": [],
     "ask": []

apps/desktop/src-tauri/Cargo.toml

@@ -48,8 +48,13 @@ env_logger = "0.11"
 windows = { version = "0.58", features = [
     "Win32_Foundation",
     "Win32_System_Com",
+    "Win32_System_Com_StructuredStorage",
+    "Win32_System_Ole",
     "Win32_Media_Audio",
     "Win32_Media_KernelStreaming",
+    "Win32_UI_Shell_PropertiesSystem",
+    "Win32_Devices",
+    "Win32_Devices_FunctionDiscovery",
 ] }
 
 [target.'cfg(target_os = "linux")'.dependencies]

apps/desktop/src-tauri/migrations/003_add_prompt_templates.sql

@@ -0,0 +1,74 @@
+-- Prompt templates table for customizable LLM prompts
+CREATE TABLE IF NOT EXISTS prompt_templates (
+    id INTEGER PRIMARY KEY AUTOINCREMENT,
+    insight_type TEXT NOT NULL CHECK(insight_type IN ('summary', 'action_item', 'key_point', 'decision')),
+    name TEXT NOT NULL,
+    prompt_text TEXT NOT NULL,
+    is_default BOOLEAN NOT NULL DEFAULT 0,
+    is_active BOOLEAN NOT NULL DEFAULT 0,
+    created_at INTEGER NOT NULL DEFAULT (strftime('%s', 'now')),
+    updated_at INTEGER NOT NULL DEFAULT (strftime('%s', 'now')),
+    UNIQUE(insight_type, name)
+);
+
+CREATE INDEX idx_prompt_templates_type ON prompt_templates(insight_type);
+CREATE INDEX idx_prompt_templates_active ON prompt_templates(is_active);
+
+-- Insert default templates for each insight type
+INSERT INTO prompt_templates (insight_type, name, prompt_text, is_default, is_active) VALUES
+('summary', 'Default Summary', 'You are an expert meeting summarizer. Analyze the following meeting transcript and create a concise summary.
+
+Meeting Transcript:
+{transcript}
+
+{context}
+
+Create a clear, concise summary in 3-5 bullet points covering:
+- Main topics discussed
+- Key decisions or conclusions
+- Important highlights
+
+Format your response as a bulleted list with each point starting with "- ".', 1, 1),
+
+('action_item', 'Default Action Items', 'You are an expert at extracting action items from meetings. Analyze the following meeting transcript and identify all actionable tasks.
+
+Meeting Transcript:
+{transcript}
+
+{context}
+
+Extract all action items, decisions requiring follow-up, and tasks mentioned. For each action item, provide:
+- The specific task or action
+- Who is responsible (if mentioned)
+- Any deadlines or timeframes (if mentioned)
+
+Format each action item on a separate line starting with "- ". Be specific and actionable.', 1, 1),
+
+('key_point', 'Default Key Points', 'You are an expert at identifying key discussion points from meetings. Analyze the following meeting transcript and extract the most important points.
+
+Meeting Transcript:
+{transcript}
+
+{context}
+
+Identify 3-7 key points, insights, or important statements from the meeting. Focus on:
+- Critical information shared
+- Important questions raised
+- Significant agreements or disagreements
+- Notable insights or revelations
+
+Format your response as a bulleted list with each point starting with "- ".', 1, 1),
+
+('decision', 'Default Decisions', 'You are an expert at identifying decisions made in meetings. Analyze the following meeting transcript and extract all decisions.
+
+Meeting Transcript:
+{transcript}
+
+{context}
+
+Identify all explicit or implicit decisions made during the meeting. For each decision, provide:
+- What was decided
+- The rationale or context (if provided)
+- Who made or approved the decision (if mentioned)
+
+Format each decision on a separate line starting with "- ". Focus on concrete decisions, not just discussions.', 1, 1);

apps/desktop/src-tauri/migrations/004_add_model_overrides.sql

@@ -0,0 +1,15 @@
+-- Model configuration overrides table
+-- Allows users to customize model-specific settings like context window
+CREATE TABLE IF NOT EXISTS model_overrides (
+    id INTEGER PRIMARY KEY AUTOINCREMENT,
+    provider TEXT NOT NULL,  -- 'openai', 'anthropic', 'google', 'groq'
+    model_id TEXT NOT NULL,  -- Model identifier (e.g., 'gpt-4', 'claude-3-opus-20240229')
+    context_window INTEGER,  -- User-configured context window (overrides default)
+    notes TEXT,              -- User notes about this model
+    created_at INTEGER NOT NULL DEFAULT (strftime('%s', 'now')),
+    updated_at INTEGER NOT NULL DEFAULT (strftime('%s', 'now')),
+    UNIQUE(provider, model_id)
+);
+
+CREATE INDEX idx_model_overrides_provider ON model_overrides(provider);
+CREATE INDEX idx_model_overrides_model ON model_overrides(model_id);

apps/desktop/src-tauri/migrations/005_add_speaker_label_to_transcripts.sql

@@ -0,0 +1,5 @@
+-- Add speaker_label to transcripts table for diarization support
+-- This allows storing speaker identification directly on transcript segments
+ALTER TABLE transcripts ADD COLUMN speaker_label TEXT;
+
+CREATE INDEX IF NOT EXISTS idx_transcripts_speaker_label ON transcripts(speaker_label);