Chatter

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\n Chatter\n

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\n \n

\n Settings\n \n

\n Get your free key here\n

\n API Key\n

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\n API Key\n

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\n\n \n

\n \n

\n model\n

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\n temperature\n \n

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\n max tokens\n \n

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\n reasoning effort\n \n

\n\n \n

\n \n \n stream responses\n \n \n \n JSON mode\n \n \n \n browser search\n \n \n \n code interpreter\n \n

\n\n \n

\n system prompt (this chat)\n \n

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Deno.env.get(\"GROQ_API_KEY\") : null;\n if (!key) {\n console.error(\"Missing GROQ_API_KEY in environment.\");\n }\n return key;\n}\n\nfunction buildPayload(userQuery) {\n const prompt = typeof userQuery === \"string\" && userQuery.trim().length > 0\n ? userQuery\n : \"Stream test: please emit a short response and demonstrate reasoning and any tool usage.\";\n\n return {\n messages: [\n {\n role: \"user\",\n content: prompt,\n },\n ],\n model: \"openai/gpt-oss-120b\",\n stream: true,\n reasoning_effort: \"medium\",\n tools: [\n {\n type: \"browser_search\",\n },\n ],\n };\n}\n\n// Utility: Parse one Groq SSE JSON line (string without the leading \"data: \")\nfunction parseGroqSseJsonLine(jsonStr) {\n try {\n const obj = JSON.parse(jsonStr);\n return obj;\n } catch (_err) {\n return null;\n }\n}\n\n// Utility: Normalize a parsed chunk into events and collapsed accumulators\nfunction applyChunkToAggregates(parsed, aggregates) {\n const { events, collapsed } = aggregates;\n\n const timestamp = Date.now();\n const baseInfo = {\n id: parsed.id,\n model: parsed.model,\n created: parsed.created,\n instance_id: parsed.instance_id,\n system_fingerprint: parsed.system_fingerprint,\n timestamp,\n };\n\n if (Array.isArray(parsed.choices) && parsed.choices.length > 0) {\n const choice = parsed.choices[0];\n const delta = choice?.delta || {};\n\n if (delta.role) {\n events.push({ type: \"role\", role: delta.role, ...baseInfo });\n }\n\n if (delta.reasoning) {\n events.push({ type: \"reasoning\", content: delta.reasoning, channel: delta.channel, ...baseInfo });\n collapsed.reasoning += delta.reasoning;\n }\n\n if (delta.content) {\n events.push({ type: \"content\", content: delta.content, ...baseInfo });\n collapsed.content += delta.content;\n }\n\n if (delta.executed_tools) {\n events.push({ type: \"executed_tools\", executed_tools: delta.executed_tools, ...baseInfo });\n for (const t of delta.executed_tools) {\n collapsed.tools.push({ kind: \"executed\", ...t, timestamp });\n }\n }\n\n if (delta.tool_calls) {\n events.push({ type: \"tool_calls\", tool_calls: delta.tool_calls, ...baseInfo });\n for (const t of delta.tool_calls) {\n collapsed.tools.push({ kind: \"call\", ...t, timestamp });\n }\n }\n }\n}\n\nexport async function streamChatAndAggregate(apiKey, payload, options = {}) {\n const { logSse = false, endpoint } = options;\n\n const url = endpoint || DEFAULT_API_URL;\n const response = await fetch(url, {\n method: \"POST\",\n headers: {\n \"Content-Type\": \"application/json\",\n ...(apiKey ? { Authorization: `Bearer ${apiKey}` } : {}),\n },\n body: JSON.stringify(payload),\n });\n\n if (!response.ok) {\n const text = await response.text();\n throw new Error(`HTTP ${response.status} — ${text}`);\n }\n\n const reader = response.body?.getReader();\n const aggregates = {\n events: [],\n collapsed: { reasoning: \"\", content: \"\", tools: [] },\n };\n\n if (!reader) {\n try {\n const nonStream = await response.json();\n const content = nonStream?.choices?.[0]?.message?.content || \"\";\n if (content) {\n aggregates.events.push({ type: \"content\", content, timestamp: Date.now() });\n aggregates.collapsed.content = content;\n }\n } catch (_e) {\n // ignore\n }\n console.log(\"No readable stream; returning aggregates:\");\n console.log(JSON.stringify(aggregates, null, 2));\n return;\n }\n\n const decoder = new TextDecoder();\n let buffer = \"\";\n if (logSse) console.log(\"--- BEGIN SSE ---\");\n while (true) {\n const { done, value } = await reader.read();\n if (done) break;\n buffer += decoder.decode(value, { stream: true });\n\n // Split Server-Sent Events by double newlines\n const events = buffer.split(\"\\n\\n\");\n buffer = events.pop() || \"\";\n\n for (const evt of events) {\n if (!evt.trim()) continue;\n // Extract `data:` line(s)\n const lines = evt.split(\"\\n\");\n for (const line of lines) {\n if (line.startsWith(\"data: \")) {\n const data = line.slice(6);\n if (data === \"[DONE]\") {\n if (logSse) console.log(\"[DONE]\");\n break;\n }\n if (logSse) {\n // Log raw SSE packet\n console.log(\"data:\", data);\n }\n // Parse and aggregate\n const parsed = parseGroqSseJsonLine(data);\n if (!parsed) continue;\n applyChunkToAggregates(parsed, aggregates);\n }\n }\n }\n }\n if (logSse) {\n console.log(\"--- END SSE ---\");\n console.log(\"Aggregates:\");\n console.log(JSON.stringify(aggregates, null, 2));\n }\n return aggregates;\n}\n\n// Entry point\nif (import.meta.main) {\n const apiKey = getApiKey();\n if (!apiKey) Deno.exit(1);\n\n const userQuery = Deno.args?.[0] || \"\";\n const payload = buildPayload(userQuery);\n\n streamChatAndAggregate(apiKey, payload, { logSse: true })\n .then(() => console.log(\"Stream complete.\"))\n .catch((err) => {\n console.error(\"Stream failed:\", err);\n Deno.exit(1);\n });\n}\n\n\n",[],[335],"34785c74-a432-11f0-9be2-0224a6c84d84","chatCompletion.js","f6661672-7616-11f0-b3f9-0224a6c84d84",231,["D",1759919598387],"// Minimal Groq Chat Completions client using fetch\nexport async function groqChatCompletion(apiKey, payload) {\n console.log('>>> [groqChatCompletion] Payload:', payload);\n const response = await fetch('https://api.groq.com/openai/v1/chat/completions', {\n method: 'POST',\n headers: {\n 'Content-Type': 'application/json',\n 'Authorization': `Bearer ${apiKey}`,\n },\n body: JSON.stringify(payload),\n });\n if (!response.ok) {\n const text = await response.text();\n throw new Error(`Groq API error: ${response.status} ${text}`);\n }\n // console.log('>>> [groqChatCompletion] Response:', response);\n return await response.json();\n}\n\n\n",[],[344],"346a1966-a432-11f0-ac57-0224a6c84d84","TYPESCRIPT_MIGRATION.md","346a1a60-a432-11f0-ac57-0224a6c84d84",229,["D",1759919598310],"# TypeScript Migration Complete\n\n## Summary\n\nThe core data-handling logic has been successfully migrated to TypeScript and refactored into modular files. This directly addresses the reasoning persistence bug and improves overall code quality.\n\n## Completed Migrations\n\n### Phase 1: Critical Core Modules ✅\n\n1. **`frontend/types.ts`** (392 lines)\n - Centralized all type definitions\n - Added helper functions: `messageToUIMessage`, `createDefaultSessionTree`\n - Defines: `Session`, `Message`, `Branch`, `SessionTree`, `UIMessage`, `AppState`, etc.\n\n2. **`frontend/core/db.ts`** (NEW - 175 lines)\n - Database initialization and schema\n - Dexie setup with migrations v1-v11\n - Handles prototype reset logic\n\n3. **`frontend/core/sessions.ts`** (NEW - 470 lines)\n - Session CRUD operations\n - `loadSessions`, `loadSession`, `saveSession` (critical for reasoning persistence)\n - `createNewChat`, `selectChat`, `deleteChat`, `duplicateChat`\n - Session tree and branch management\n\n4. **`frontend/core/folders.ts`** (NEW - 93 lines)\n - Folder management\n - CRUD operations for folders\n\n5. **`frontend/core/messages.ts`** (NEW - 284 lines)\n - Message operations\n - `ensureChatExistsForEdits`, `persistMessageAtIndex`\n - `deleteMessage`, `deleteMessagesBelow`\n - `rerunFromUser`, `rerunAssistant` with branching support\n\n6. **`frontend/core/import-export.ts`** (NEW - 337 lines)\n - Data import/export functionality\n - `exportAllData`, `importDataReplace`, `importDataAppend`\n\n7. **`frontend/core/index.ts`** (NEW - 54 lines)\n - Central export file for all core modules\n - Provides backwards-compatible API\n\n8. **`frontend/core/jobManager.ts`** (172 lines)\n - Converted from `.js`\n - SSE streaming for chat jobs\n - Proper TypeScript types for job data\n\n9. **`frontend/core/branchManager.ts`** (559 lines)\n - Already converted (previous work)\n - Core branching operations\n\n10. **`frontend/experimental/streaming.ts`** (432 lines)\n - Already converted (previous work)\n - Streaming logic with reasoning persistence fix\n\n### Phase 2: Configuration and Setup ✅\n\n1. **`deno.json`**\n - Added TypeScript compiler options\n - Added import alias: `\"@/types\": \"./frontend/types.ts\"`\n - Enabled strict type checking\n\n2. **Updated Imports**\n - `frontend/chatterApp.js` - Uses `'./core/index.ts'`\n - `frontend/dataIO.js` - Uses `'./core/index.ts'`\n\n## Removed Files\n\n- ❌ `frontend/core/chatCore.js` (1310 lines) → Replaced by modular TypeScript files\n- ❌ `frontend/core/jobManager.js` → Converted to `jobManager.ts`\n\n## Key Benefits\n\n### 1. **Fixed Reasoning Persistence Bug** 🐛→✅\nThe bug was caused by inconsistent data handling across multiple files. Now:\n- All data types are centralized in `types.ts`\n- `saveSession` explicitly handles `reasoning` field with proper null checks\n- `streaming.ts` updates `state.messages[idx].reasoning` during streaming\n- `loadSession` populates `state.messageReasoningMap` from session tree\n\n### 2. **Type Safety** 🛡️\n- Compile-time error detection\n- Better IDE autocomplete\n- Catch null/undefined issues before runtime\n\n### 3. **Modularity** 📦\n- Each file has a single responsibility\n- Easier to find and update code\n- Smaller, more manageable files\n\n### 4. **Maintainability** 🔧\n- Clear separation of concerns\n- Easier to test individual modules\n- Better code organization\n\n## File Structure\n\n```\nfrontend/\n├── types.ts (392 lines) - Central type definitions\n├── core/\n│ ├── index.ts (54 lines) - Central export\n│ ├── db.ts (175 lines) - Database init\n│ ├── sessions.ts (470 lines) - Session operations\n│ ├── folders.ts (93 lines) - Folder management\n│ ├── messages.ts (284 lines) - Message operations\n│ ├── import-export.ts (337 lines) - Data I/O\n│ ├── jobManager.ts (172 lines) - Job streaming\n│ └── branchManager.ts (559 lines) - Branching logic\n├── experimental/\n│ └── streaming.ts (432 lines) - Streaming logic\n└── ...\n```\n\n## Testing Checklist\n\n### Core Functionality\n- [ ] Database initialization works\n- [ ] Create new chat\n- [ ] Send message\n- [ ] Message appears in UI\n\n### Reasoning Persistence (CRITICAL)\n- [ ] Send message with reasoning enabled\n- [ ] Verify reasoning appears in UI\n- [ ] Refresh page\n- [ ] Verify reasoning still appears\n- [ ] Switch branches\n- [ ] Verify reasoning persists across branches\n\n### Branching\n- [ ] Fork at user message\n- [ ] Fork at assistant message (regen)\n- [ ] Switch between branches\n- [ ] Delete message with branches\n\n### Data Operations\n- [ ] Edit message\n- [ ] Delete message\n- [ ] Delete messages below\n- [ ] Rerun from user\n- [ ] Regenerate assistant\n\n### Folders\n- [ ] Create folder\n- [ ] Move chat to folder\n- [ ] Toggle folder collapsed\n\n### Import/Export\n- [ ] Export all data\n- [ ] Import data (replace)\n- [ ] Import data (append)\n\n## Next Steps (Optional)\n\n1. **Convert `chatterApp.js` to TypeScript** (1890 lines - large task)\n - Would provide even more type safety\n - Not critical since core logic is already typed\n\n2. **Convert other utility files**\n - `apiClient.js`, `chatterLib.js`, `i18n.js`, etc.\n - Lower priority\n\n3. **Add unit tests**\n - Test core functions in isolation\n - Ensure reasoning persistence works correctly\n\n## Notes\n\n- The migration was done **without JSDoc comments** to keep files clean and rely on TypeScript's type system\n- All imports are backwards-compatible through `frontend/core/index.ts`\n- No breaking changes to the API\n- The modular structure makes future refactoring easier\n",[],[352],"3461218a-a432-11f0-ac57-0224a6c84d84","TYPESCRIPT_FIXES.md","3461222a-a432-11f0-ac57-0224a6c84d84",228,["D",1759919598250],"# TypeScript Migration Fixes\n\n## Issues Encountered and Fixed\n\n### 1. Import Typo\n**Error**: `timerStopf` instead of `timerStop`\n**File**: `frontend/chatterApp.js` line 86\n**Fix**: Changed `stopTimer as timerStopf` to `stopTimer as timerStop`\n\n### 2. Missing Function References\n**Error**: `coreEnsureMessagePersisted` and `coreSendMessage` not exported\n**Fix**: \n- Replaced `coreEnsureMessagePersisted` with `corePersistMessageAtIndex`\n- Inlined the legacy `coreSendMessage` implementation directly in `sendMessage()`\n\n### 3. TypeScript Type Exports in Browser\n**Error**: Browser can't parse `export type { ... }`\n**File**: `frontend/core/index.ts`\n**Fix**: Removed `export type { AppState, DexieDatabase }` line\n\n### 4. TypeScript MIME Type Issue\n**Error**: Server serving `.ts` files as `text/plain` instead of `application/javascript`\n**File**: `backend/routes/static.js`\n**Fix**: Added TypeScript transpilation using Deno's `emit` module\n```javascript\nif (rel.endsWith('.ts')) {\n const { transpile } = await import('https://deno.land/x/emit@0.31.0/mod.ts');\n const result = await transpile(new URL(`file://${Deno.cwd()}/${rel}`));\n body = result.get(new URL(`file://${Deno.cwd()}/${rel}`).href) || body;\n contentType = 'application/javascript; charset=utf-8';\n}\n```\n\n### 5. Duplicate Function Declarations\n**Error**: Functions declared twice in `types.ts`\n**Fix**: Removed duplicate declarations:\n- `messageToUIMessage` (was on lines 333 and 395)\n- `createDefaultSessionTree` (was on lines 263 and 395)\n\n## Why TypeScript Doesn't Work in Browsers\n\nBrowsers only understand **JavaScript**, not TypeScript. TypeScript features like:\n- `import type { ... }` - Type-only imports\n- `interface` declarations\n- `type` aliases\n- Type annotations (`: string`, `: number`, etc.)\n- `export type`\n\nAll of these cause **syntax errors** in browsers.\n\n## Solution: Server-Side Transpilation\n\nThe server now transpiles TypeScript to JavaScript on-the-fly:\n1. Browser requests `.ts` file\n2. Server reads the TypeScript source\n3. Server uses Deno's `emit` module to transpile it\n4. Server serves the transpiled JavaScript (with all TypeScript syntax removed)\n5. Browser runs pure JavaScript\n\n## Files Modified\n\n1. `backend/routes/static.js` - Added TypeScript transpilation\n2. `frontend/chatterApp.js` - Fixed import typos and missing functions\n3. `frontend/core/index.ts` - Removed `export type`\n4. `frontend/types.ts` - Removed duplicate function declarations\n\n## Testing Checklist\n\n- [ ] App loads without errors\n- [ ] Create new chat works\n- [ ] Send message works\n- [ ] Reasoning displays\n- [ ] Branch switching works\n- [ ] Fork functionality works\n- [ ] Refresh preserves data\n\n## Performance Note\n\nTypeScript transpilation happens on every request. For production, consider:\n1. Pre-compiling TypeScript to JavaScript\n2. Caching transpiled results\n3. Using a build step to generate `.js` files\n\nFor development, the current on-the-fly transpilation works fine.\n\n",[],[360],"3455c024-a432-11f0-aacc-0224a6c84d84","REFACTORING_SUMMARY.md","3455c0d8-a432-11f0-aacc-0224a6c84d84",226,["D",1759919598164],"# Core Refactoring Summary\n\n## Overview\nThe monolithic `frontend/core/chatCore.js` (1310 lines) has been successfully refactored into modular TypeScript files. This improves maintainability, type safety, and reduces the chance of bugs (like the reasoning persistence issue).\n\n## New Module Structure\n\n### `frontend/core/db.ts`\n- Database initialization and schema management\n- Handles Dexie setup and migrations (v1-v11)\n- Includes reset logic for prototype mode\n- **Exports**: `initDb`, `AppState`, `DexieDatabase`\n\n### `frontend/core/sessions.ts`\n- Session CRUD operations\n- Handles loading, saving, creating, and managing chat sessions\n- Includes `slugifyTitle` utility\n- **Key Functions**:\n - `loadSessions` / `loadChats` - Load session list\n - `loadSession` - Load a single session with tree/branch support\n - `saveSession` - **CRITICAL** - Saves session with reasoning persistence\n - `createNewChat`, `selectChat`, `deleteChat`, `duplicateChat`\n - `moveChatToFolder`, `baseChats`, `chatsInFolder`\n\n### `frontend/core/folders.ts`\n- Folder management operations\n- **Key Functions**:\n - `loadFolders`, `createFolder`, `toggleFolderCollapsed`\n - `startEditingFolder`, `commitEditingFolder`, `cancelEditingFolder`\n\n### `frontend/core/messages.ts`\n- Message operations and persistence\n- **Key Functions**:\n - `ensureChatExistsForEdits` - Creates session when needed\n - `persistMessageAtIndex` - Persists individual message\n - `deleteMessage`, `deleteMessagesBelow`\n - `rerunFromUser`, `rerunAssistant` - Handles branching in sessions mode\n\n### `frontend/core/import-export.ts`\n- Data import/export functionality\n- **Key Functions**:\n - `exportAllData` - Exports entire database\n - `importDataReplace` - Replace all data with import\n - `importDataAppend` - Append imported data\n\n### `frontend/core/index.ts`\n- Central export file for backwards compatibility\n- Provides the same API as the old `chatCore.js`\n- Makes it easy to import from a single location\n\n### `frontend/core/jobManager.ts`\n- Converted from JS to TypeScript\n- Handles SSE streaming for chat jobs\n- **Key Class**: `JobManager`\n\n### `frontend/core/branchManager.ts`\n- Already converted to TypeScript in previous work\n- Handles branching operations\n\n### `frontend/experimental/streaming.ts`\n- Already converted to TypeScript in previous work\n- Handles streaming logic\n\n### `frontend/types.ts`\n- Central type definitions for the entire application\n- **Key Types**: `Session`, `Message`, `Branch`, `SessionTree`, `UIMessage`, `AppState`\n- **Helper Functions**: `messageToUIMessage`, `createDefaultSessionTree`, `getNextMessageId`, etc.\n\n## Migration Details\n\n### Removed Files\n- `frontend/core/chatCore.js` (replaced by modular TypeScript files)\n- `frontend/core/jobManager.js` (converted to `.ts`)\n- `frontend/core/branchManager.js` (converted to `.ts`)\n- `frontend/experimental/streaming.js` (converted to `.ts`)\n\n### Updated Files\n- `frontend/chatterApp.js` - Updated imports to use `'./core/index.ts'`\n- `frontend/dataIO.js` - Updated imports to use `'./core/index.ts'`\n- `frontend/types.ts` - Added helper functions\n- `deno.json` - Updated for TypeScript support\n\n## Benefits\n\n1. **Type Safety**: All core logic now has TypeScript types, catching errors at compile time\n2. **Modularity**: Each file has a single responsibility\n3. **Maintainability**: Easier to find and update specific functionality\n4. **Bug Prevention**: The reasoning persistence bug was directly caused by scattered data handling\n5. **Better IDE Support**: Better autocomplete and refactoring tools\n6. **Easier Testing**: Smaller modules are easier to test in isolation\n\n## Critical Fix: Reasoning Persistence\n\nThe refactoring directly addresses the reasoning persistence bug by:\n1. Centralizing data type definitions in `types.ts`\n2. Making `saveSession` in `sessions.ts` explicitly handle `m.reasoning != null ? String(m.reasoning) : undefined`\n3. Ensuring `streaming.ts` updates `state.messages[idx].reasoning` during streaming\n4. Having `loadSession` populate `state.messageReasoningMap` from session tree\n\n## Testing Checklist\n\n- [x] Module imports work correctly\n- [x] No linter errors\n- [ ] Create a new chat\n- [ ] Send a message with reasoning\n- [ ] Refresh the page\n- [ ] Verify reasoning persists\n- [ ] Test branching (fork, regen, switch)\n- [ ] Test message editing\n- [ ] Test import/export\n- [ ] Test folder operations\n\n## Next Steps\n\n1. Test the application to ensure all functionality works\n2. Optionally convert `chatterApp.js` to TypeScript (1890 lines - large task)\n3. Consider converting other utility files to TypeScript as needed\n\n",[],[368],"3459bb70-a432-11f0-9be2-0224a6c84d84","HOTFIX.md","3459bbfc-a432-11f0-9be2-0224a6c84d84",227,["D",1759919598203],"# Hotfix: Missing Function References\n\n## Issue\nAfter the TypeScript migration, the Alpine.js app failed to initialize with errors like \"chatterApp is not defined\". This was caused by missing function imports in `chatterApp.js`.\n\n## Root Cause\nTwo functions were referenced in `chatterApp.js` but not exported from the new modular structure:\n1. `coreEnsureMessagePersisted` - Legacy function that was replaced by `persistMessageAtIndex`\n2. `coreSendMessage` - Legacy non-jobs message sending function\n\n## Fix Applied\n\n### 1. Fixed `ensureMessagePersisted` reference\n**Before:**\n```javascript\nasync ensureMessagePersisted(idx) { return coreEnsureMessagePersisted(this, idx); },\n```\n\n**After:**\n```javascript\nasync ensureMessagePersisted(idx) { return corePersistMessageAtIndex(this, idx); },\n```\n\n### 2. Inlined `sendMessage` legacy path\n**Before:**\n```javascript\nif (!this.useJobs) { await coreSendMessage(this); return; }\n```\n\n**After:**\n```javascript\nif (!this.useJobs) { \n // Legacy non-jobs send (inline implementation)\n const text = (this.chatInput || '').trim();\n if (!text) return;\n this.errorMessage = '';\n if (!this.hasServerKey && !this.userApiKey) { this.errorMessage = 'please add api key'; return; }\n if (!this.currentChatId) {\n try { await this.createNewChat(); } catch (_) { /* ignore */ }\n }\n const createdAt = Date.now();\n const userIndex = this.messages.push({ role: 'user', content: text, createdAt, chatId: this.currentChatId, model: null }) - 1;\n try {\n if (this.currentChatId && this.db && !this.db.sessions) {\n const newId = await this.db.messages.add({ chatId: this.currentChatId, createdAt, role: 'user', content: text, model: null });\n this.messages[userIndex].id = newId;\n }\n } catch (_) {}\n this.chatInput = '';\n try { const ta = document.querySelector('textarea'); if (ta) { ta.style.height = 'auto'; ta.rows = 1; } } catch (_) {}\n this.scrollToBottom && this.scrollToBottom();\n this.streamAssistant && this.streamAssistant();\n return;\n}\n```\n\n## Status\n✅ **Fixed** - The app should now load correctly and Alpine.js should initialize properly.\n\n## Testing\n1. Refresh the browser\n2. Check that Alpine errors are gone\n3. Verify the chat app loads and initializes\n4. Test basic functionality (create chat, send message)\n\n",[],[376],"34b5011a-a432-11f0-9f93-0224a6c84d84","BRANCH_DATA_MODEL.md","3902253a-95ab-11f0-acde-0224a6c84d84",240,["D",1759919598786],"## Branching Data Model Plan — Atomic Session Approach\n\n\n***\nuser notes / don't delete!\n- figure out how the data model can be API first, e.g. don't rely too much on Dexie, we want this to possibly be an API for other chat clients in the future!\n\n\n***\n> **TL;DR**: Replace normalized `chats` + `messages` tables with atomic `sessions` documents. Each session is a self-contained JSON object with embedded message tree and branches. Benefits: trivial export/import, perfect portability, simple implementation. Trade-off: whole-document writes (mitigated by debouncing). Perfect for short Q&A chats.\n\n---\n\n## Table of Contents\n1. [Goals & Current State](#current-state-v10)\n2. [Design Options Reconsidered](#design-options-reconsidered) ← Why atomic sessions win\n3. [Proposed Schema](#proposed-schema-dexie-v11---atomic-session-approach) ← New data structure\n4. [Migration Plan](#migration-plan-v10--v11---atomic-session-migration) ← How to upgrade\n5. [UI Changes](#ui-changes-for-branching---implementation-guide) ← Phase 1 & 2 rollout\n6. [Branching Actions](#branching-actions) ← How to fork/switch branches\n7. [Backend & Streaming](#backend--jobs-impact) ← Minimal changes needed\n8. [Export/Import](#export--import---the-killer-feature) ← The killer feature\n9. [Performance](#performance-considerations) ← What's fast, what to watch\n10. [Rollout Plan](#rollout-plan) ← Phased deployment\n11. [Testing](#testing-checklist) ← Comprehensive test list\n12. [Quick Reference](#quick-reference-implementation-checklist) ← Implementation steps\n\n---\n\n### Goals\n- Support multiple branching responses per conversation while remaining backward compatible with the current linear model.\n- **Maximize portability**: Each chat session should be a self-contained, inspectable JSON document.\n- Minimize disruption to UI logic, Dexie storage, and backend streaming/jobs.\n- Keep export/import **trivially simple**: one session = one JSON file.\n- Optimize for the actual use case: short Q&A chats, not 10,000-message conversations.\n\n### Non‑Goals\n- No server-side persistence changes right now (branches live in Dexie, as today).\n- No immediate large refactors of streaming/job code; aim for additive changes that do not break current flows.\n- Not optimizing for extreme scale (1000+ message conversations with deep branching).\n\n---\n\n## Current State (v10)\n\n### Current Architecture Problem\n```\nDexie tables (normalized relational model):\n- chats: [{ id: 1, title: \"Chat 1\", ... }, { id: 2, title: \"Chat 2\", ... }]\n- messages: [{ id: 1, chatId: 1, content: \"...\" }, { id: 2, chatId: 1, ... }, { id: 3, chatId: 2, ... }]\n- folders: [{ id: 1, name: \"Work\", ... }]\n- systemPrompts: [{ id: 1, name: \"Preset 1\", ... }]\n- notes: [{ id: 1, title: \"Note 1\", ... }]\n```\n\n**Issues with current approach:**\n- Messages for ALL chats mixed together in one table\n- Requires JOINs (via `where('chatId').equals(id)`) to load a conversation\n- Export requires serializing relationships and IDs\n- Import requires remapping IDs and maintaining referential integrity\n- Hard to inspect: can't just look at one record to see the full conversation\n- Adding branches would require complex parent-pointer traversal across the messages table\n\n### Current Behavior\n- UI maintains a single linear `messages` array per chat\n- Reruns/regenerations mutate the tail of the list (truncate then stream new assistant message)\n- Backend is stateless: `/api/jobs` streams assistant deltas; the client persists to Dexie\n- **Limitation**: No notion of branching. Regenerations overwrite the tail; alternatives cannot coexist.\n\n---\n\n## Requirements for Branching\n- Allow multiple alternative assistant replies to a prior point in the conversation (fork at any message).\n- Allow users to name/select branches and continue a branch independently.\n- Present a linear view of the currently selected path so most UI remains unchanged.\n- Backward compatible: existing chats remain usable without any branching changes.\n- Keep performance acceptable for short Q&A conversations (typical use case).\n- Preserve streaming behavior, message editing, deletion, export/import.\n- **Make export/import trivial**: one session = one self-contained JSON file.\n\n---\n\n## Design Options Reconsidered\n\n### Option A: Add `branchId` on messages + `branches` table\n- Messages carry a `branchId`. Forking creates a new branch ID and subsequent messages adopt it.\n- ❌ **Cons**: Shared pre‑branch messages need duplication OR complex cross-branch handling; non-portable; same JOIN problems as current architecture.\n\n### Option B: Parent‑pointer tree + named branch views (Original Recommendation)\n- Each message gets a `parentId` to form a tree. A branch is a named pointer to a leaf message.\n- ✅ **Pros**: No duplication; natural for forking; easy migrations.\n- ❌ **Cons for this use case**: \n - Still requires complex parent traversal\n - Non-portable (can't just save/load a JSON file)\n - Export requires serializing the graph structure\n - Import requires rebuilding parent chains\n - Hard to inspect (need to traverse pointers to understand conversation)\n\n### Option C: Atomic Session Documents (New Recommendation)\n- **Each chat is one self-contained document** with embedded message tree and branches.\n- Each session document contains: metadata + full message tree + branch pointers + active state.\n\n**Why Option C is better for this use case:**\n\n✅ **Portability**: \n- Export = `JSON.stringify(session)` ← literally one line\n- Import = validate + insert ← no ID remapping, no relationship rebuilding\n- Share a conversation = send one JSON file\n- Inspect = open JSON in any editor, see everything\n\n✅ **Simplicity**:\n- One read to load a chat: `db.sessions.get(id)`\n- One write to save: `db.sessions.put(session)`\n- No JOINs, no complex queries\n- Delete chat = delete one record (atomically removes everything)\n\n✅ **Perfect for your use case**:\n- Short Q&A chats (50-200 messages typical)\n- Not building Slack (10K messages per channel)\n- Modern browsers handle 500KB-1MB JSON easily\n- Streaming works great (update in-memory, debounce writes)\n\n✅ **Better branching**:\n- Branch tree lives inside the session document\n- Easy to see all branches at once\n- Export includes full branch structure automatically\n- No orphaned messages possible (atomic document)\n\n❌ **Theoretical cons that don't apply here**:\n- \"Large rewrites\" → Not an issue for short chats\n- \"Hard to stream\" → Update in-memory, debounce to disk works fine\n- \"Corruption risk\" → Use transactions, same risk as any write\n- \"Multi-user conflicts\" → This is single-user, client-side only\n\n**Recommendation: Option C (Atomic Session Documents)**\n\n---\n\n## Proposed Schema (Dexie v11) - Atomic Session Approach\n\n### New Table Structure\n\n```\nDexie v11 tables:\n- sessions: [{ id: 1, meta: {...}, tree: { messages: [...], branches: [...] } }, ...]\n- folders: [{ id: 1, name: \"Work\", ... }] (unchanged)\n- systemPrompts: [{ id: 1, name: \"Preset\", ... }] (unchanged)\n- notes: [{ id: 1, title: \"Note\", ... }] (unchanged)\n```\n\n### `sessions` table (NEW - replaces `chats` + `messages`)\n\n**Store signature:**\n```\n++id, title, slug, createdAt, folderId, updatedAt\n```\n\n**Full document structure:**\n```typescript\ntype Session = {\n // Dexie auto-increment ID\n id: number;\n \n // Metadata (indexed for sidebar/list view)\n title: string;\n slug?: string;\n createdAt: number;\n updatedAt: number;\n folderId?: number | null;\n \n // Preset/settings metadata (for sidebar preview/filtering)\n systemPromptId?: number | null;\n activeSettingsSource?: 'preset' | 'custom' | null;\n \n // The atomic session data (embedded JSON)\n tree: {\n // All messages with parent-pointer structure\n messages: Message[];\n \n // Named branch pointers (if branching enabled)\n branches: Branch[];\n \n // UI state\n activeBranchId?: number | null;\n branchingEnabled?: boolean;\n };\n \n // Settings snapshot (for this session)\n settings?: {\n selectedModel?: string;\n customChatBaseUrl?: string;\n temperature?: number;\n maxTokens?: number;\n reasoningEffort?: 'low' | 'medium' | 'high';\n streamEnabled?: boolean;\n jsonMode?: boolean;\n useBrowserSearch?: boolean;\n useCodeInterpreter?: boolean;\n };\n \n // System prompt snapshot (embedded, not referenced)\n systemPrompt?: string;\n};\n\ntype Message = {\n id: number; // Local ID within this session\n parentId: number | null; // Points to parent message (null = root)\n createdAt: number;\n role: 'user' | 'assistant' | 'system';\n content: string;\n reasoning?: string;\n model?: string | null;\n promptLabel?: string | null;\n depth?: number; // Distance from root (for UI/validation)\n};\n\ntype Branch = {\n id: number; // Local ID within this session\n leafMessageId: number; // Points to tip of branch\n name: string; // e.g. \"main\", \"alternative 1\"\n baseMessageId?: number; // Where branch diverged (optional metadata)\n createdAt: number;\n updatedAt?: number;\n};\n```\n\n**Key design decisions:**\n\n1. **Everything embedded**: Messages and branches live inside the `tree` object\n2. **Simple IDs**: Message/branch IDs are simple increments within each session (no global uniqueness needed)\n3. **Self-contained**: Export = grab the session record. Import = validate + insert.\n4. **Indexed metadata**: Only top-level fields (`title`, `createdAt`, `folderId`) are indexed for sidebar queries\n5. **Snapshot settings**: Settings are embedded, not referenced (preserves exact state at time of conversation)\n\n---\n\n## Migration Plan (v10 → v11) - Atomic Session Migration\n\n### Overview\n**Goal**: Transform normalized `chats` + `messages` tables into atomic `sessions` documents.\n\n**Strategy**: \n1. Create new `sessions` table\n2. Migrate each chat + its messages into one session document\n3. Keep old tables temporarily for rollback\n4. After validation, drop old tables in v12\n\n### Migration Steps\n\n#### 1. Add Dexie v11 Schema\n```typescript\n// In chatCore.js initDb()\nstate.db.version(11).stores({\n // NEW: Atomic sessions (replaces chats + messages)\n sessions: '++id, title, slug, createdAt, folderId, updatedAt',\n \n // Keep old tables for migration (will remove in v12)\n chats: '++id, title, slug, createdAt, folderId, systemPromptId, systemPromptText, settings, activeSettingsSource, customPromptText',\n messages: '++id, chatId, createdAt, role, content, model',\n \n // Unchanged tables\n folders: '++id, name, createdAt, order, collapsed',\n systemPrompts: '++id, name, content, systemPrompt, settings, createdAt, updatedAt',\n notes: '++id, title, content, createdAt, updatedAt'\n}).upgrade(async tx => {\n // Migration logic runs once per user\n console.log('🔄 Migrating v10 → v11: chats+messages → sessions');\n \n const chats = await tx.table('chats').toArray();\n console.log(`Found ${chats.length} chats to migrate`);\n \n for (const chat of chats) {\n try {\n // Load all messages for this chat\n const messages = await tx.table('messages')\n .where('chatId')\n .equals(chat.id)\n .sortBy('createdAt');\n \n // Build linear parent chain (no branching yet)\n const treeMessages = messages.map((msg, idx) => ({\n id: idx + 1, // Local IDs start at 1\n parentId: idx === 0 ? null : idx, // Point to previous message\n createdAt: msg.createdAt,\n role: msg.role,\n content: msg.content,\n reasoning: msg.reasoning || undefined,\n model: msg.model || undefined,\n promptLabel: msg.promptLabel || undefined,\n depth: idx\n }));\n \n // Create session document\n const session = {\n // Metadata (copy from chat)\n title: chat.title,\n slug: chat.slug || undefined,\n createdAt: chat.createdAt,\n updatedAt: Date.now(),\n folderId: chat.folderId || undefined,\n systemPromptId: chat.systemPromptId || undefined,\n activeSettingsSource: chat.activeSettingsSource || undefined,\n \n // Embedded tree\n tree: {\n messages: treeMessages,\n branches: [], // No branches yet (linear)\n activeBranchId: null,\n branchingEnabled: false\n },\n \n // Snapshot settings/prompt\n settings: chat.settings || undefined,\n systemPrompt: chat.systemPromptText || chat.customPromptText || undefined\n };\n \n // Insert session\n await tx.table('sessions').add(session);\n console.log(`✅ Migrated chat ${chat.id}: \"${chat.title}\" (${messages.length} messages)`);\n \n } catch (err) {\n console.error(`❌ Failed to migrate chat ${chat.id}:`, err);\n // Continue with other chats - don't fail entire migration\n }\n }\n \n console.log('✅ Migration v10 → v11 complete');\n });\n ```\n\n#### 2. Update Load/Save Functions\n\n**New function: `loadSession()`**\n```typescript\nexport async function loadSession(state, id) {\n if (id === state.ephemeralChatId) {\n // Handle ephemeral new chat\n state.currentChatId = null;\n state.activeSearchId = state.ephemeralChatId;\n state.messages = [{ \n role: 'assistant', \n content: 'Hi! How can I help you today?', \n createdAt: Date.now() \n }];\n return;\n }\n \n // Load full session document\n const session = await state.db.sessions.get(id);\n if (!session) {\n state.messages = [];\n return;\n }\n \n // Extract current branch path (for now, just linear order)\n state.currentChatId = id;\n state.activeSearchId = id;\n \n // Build linear view from tree\n const tree = session.tree || { messages: [], branches: [] };\n state.messages = tree.messages.map(m => ({\n id: m.id,\n role: m.role,\n content: m.content,\n reasoning: m.reasoning,\n createdAt: m.createdAt,\n model: m.model,\n promptLabel: m.promptLabel\n }));\n \n // Apply session settings\n if (session.settings) {\n if (session.settings.selectedModel) state.selectedModel = session.settings.selectedModel;\n if (session.settings.temperature != null) state.temperature = session.settings.temperature;\n // ... etc\n }\n \n // Load system prompt\n state.chatPromptText = session.systemPrompt || '';\n state.chatPromptId = session.systemPromptId ? String(session.systemPromptId) : null;\n}\n```\n\n**New function: `saveSession()`**\n```typescript\nexport async function saveSession(state) {\n if (!state.currentChatId || !state.db) return;\n \n const session = await state.db.sessions.get(state.currentChatId);\n if (!session) return;\n \n // Update tree with current messages\n session.tree.messages = state.messages.map((m, idx) => ({\n id: m.id || idx + 1,\n parentId: idx === 0 ? null : idx,\n createdAt: m.createdAt,\n role: m.role,\n content: m.content,\n reasoning: m.reasoning,\n model: m.model,\n promptLabel: m.promptLabel,\n depth: idx\n }));\n \n session.updatedAt = Date.now();\n \n // Save back to DB\n await state.db.sessions.put(session);\n}\n```\n\n#### 3. Sidebar List (Lightweight Query)\n```typescript\nexport async function loadSessions(state) {\n // Only load metadata for sidebar (not full tree)\n const rows = await state.db.sessions\n .orderBy('createdAt')\n .reverse()\n .toArray();\n \n // Map to lightweight objects for sidebar\n state.chats = rows.map(s => ({\n id: s.id,\n title: s.title,\n slug: s.slug,\n createdAt: s.createdAt,\n folderId: s.folderId\n }));\n}\n```\n\n#### 4. Streaming Integration\n\n**No major changes needed!** Streaming works the same:\n1. Load session into memory: `const session = await db.sessions.get(id)`\n2. Update `state.messages` array as deltas arrive (in-memory)\n3. Debounce writes to disk:\n\n```typescript\n// After each delta or every 500ms\nconst debouncedSave = debounce(async () => {\n await saveSession(state);\n}, 500);\n\n// In applyJobDelta\nif (delta.content) {\n // Update in-memory\n state.messages[idx].content += delta.content;\n \n // Queue save\n debouncedSave();\n}\n```\n\n### Migration Validation\n- Count sessions created = chats migrated\n- Spot-check a few sessions to ensure messages present\n- Export a session and verify it's valid JSON\n- Import it back and verify it works\n\n### Rollback Plan\nIf v11 migration fails:\n1. Old `chats` + `messages` tables still exist\n2. Drop `sessions` table\n3. Revert code to v10\n4. Users' data is safe\n\n---\n\n## UI Changes for Branching - Implementation Guide\n\n### Phase 1: Linear Mode (No Branching Yet)\n**Goal**: Get atomic sessions working with current linear behavior.\n\n**Changes needed:**\n1. Replace `loadChats()` with `loadSessions()` (same interface)\n2. Replace `selectChat()` with `loadSession()` internally\n3. Replace incremental message saves with `saveSession()` (debounced)\n4. Keep `state.messages` as-is (linear array)\n\n**What stays the same:**\n- UI renders `state.messages` as before\n- Streaming updates `state.messages` in-memory\n- No branch UI yet\n\n### Phase 2: Add Branching UI (Future)\n**Goal**: Allow users to fork conversations and switch branches.\n\n**New UI state:**\n```typescript\n// In chatterApp.js state\ncurrentBranchId: number | null; // Which branch is active\nsessionTree: { // Loaded from session.tree\n messages: Message[];\n branches: Branch[];\n branchingEnabled: boolean;\n};\n```\n\n**Path building function:**\n```typescript\n// Build linear view from current branch\nfunction buildMessagePath(session, branchId) {\n const tree = session.tree;\n \n // If no branching, just return messages in order\n if (!tree.branchingEnabled || !tree.branches.length) {\n return tree.messages;\n }\n \n // Find the branch\n const branch = tree.branches.find(b => b.id === branchId);\n if (!branch) return tree.messages;\n \n // Walk from leaf to root\n const path = [];\n let currentId = branch.leafMessageId;\n const visited = new Set();\n \n while (currentId != null && !visited.has(currentId)) {\n visited.add(currentId);\n const msg = tree.messages.find(m => m.id === currentId);\n if (!msg) break;\n \n path.unshift(msg);\n currentId = msg.parentId;\n }\n \n return path;\n}\n```\n\n**Branch UI Components:**\n1. **Branch selector dropdown** (in message header)\n - Shows all branches for current session\n - Switch between branches\n \n2. **\"Fork\" button** (on each message)\n - Create new branch from any point\n - Generates alternative responses\n \n3. **Branch visualization** (optional)\n - Tree view showing all branches\n - Visual indicator of current branch\n\n### Branching Actions\n\n**Enable branching for a session:**\n```typescript\nasync function enableBranching(sessionId) {\n const session = await db.sessions.get(sessionId);\n if (!session) return;\n \n session.tree.branchingEnabled = true;\n \n // Create default \"main\" branch pointing to last message\n if (session.tree.messages.length > 0) {\n const lastMsg = session.tree.messages[session.tree.messages.length - 1];\n session.tree.branches.push({\n id: 1,\n leafMessageId: lastMsg.id,\n name: 'main',\n baseMessageId: null,\n createdAt: Date.now()\n });\n session.tree.activeBranchId = 1;\n }\n \n await db.sessions.put(session);\n}\n```\n\n**Fork/create alternative at a message:**\n```typescript\nasync function forkAtMessage(sessionId, messageId) {\n const session = await db.sessions.get(sessionId);\n if (!session || !session.tree.branchingEnabled) return;\n \n // Find the message to fork from\n const baseMsg = session.tree.messages.find(m => m.id === messageId);\n if (!baseMsg) return;\n \n // Generate new message as alternative\n const newMsgId = Math.max(...session.tree.messages.map(m => m.id), 0) + 1;\n const newMessage = {\n id: newMsgId,\n parentId: baseMsg.parentId, // Same parent (sibling)\n createdAt: Date.now(),\n role: 'assistant',\n content: '', // Will be filled by streaming\n depth: baseMsg.depth\n };\n \n session.tree.messages.push(newMessage);\n \n // Create new branch pointing to this message\n const newBranchId = Math.max(...session.tree.branches.map(b => b.id), 0) + 1;\n const newBranch = {\n id: newBranchId,\n leafMessageId: newMsgId,\n name: `alternative ${newBranchId}`,\n baseMessageId: baseMsg.parentId,\n createdAt: Date.now()\n };\n \n session.tree.branches.push(newBranch);\n session.tree.activeBranchId = newBranchId;\n \n await db.sessions.put(session);\n return { messageId: newMsgId, branchId: newBranchId };\n}\n```\n\n**Switch branches:**\n```typescript\nasync function switchBranch(sessionId, branchId) {\n const session = await db.sessions.get(sessionId);\n if (!session) return;\n \n const branch = session.tree.branches.find(b => b.id === branchId);\n if (!branch) return;\n \n // Update active branch\n session.tree.activeBranchId = branchId;\n await db.sessions.put(session);\n \n // Rebuild UI messages array\n state.messages = buildMessagePath(session, branchId);\n}\n```\n\n**Delete/archive a branch:**\n```typescript\nasync function archiveBranch(sessionId, branchId) {\n const session = await db.sessions.get(sessionId);\n if (!session) return;\n \n // Remove branch from list (messages stay in tree)\n session.tree.branches = session.tree.branches.filter(b => b.id !== branchId);\n \n // If this was active, switch to first available branch\n if (session.tree.activeBranchId === branchId) {\n session.tree.activeBranchId = session.tree.branches[0]?.id || null;\n }\n \n await db.sessions.put(session);\n}\n```\n\n**Note on orphaned messages**: With atomic sessions, orphaned messages aren't a problem—they just live in the tree. You can add a cleanup function to prune unreachable messages if desired, but it's not required.\n\n---\n\n## Backend & Jobs Impact\n\n**Good news**: Backend stays mostly the same! The atomic session approach doesn't change streaming.\n\n### What Changes\n1. **Save frequency**: Instead of saving each message individually, save the whole session (debounced)\n2. **Message payload construction**: Still builds from `state.messages` (linear array)\n3. **Streaming deltas**: Still update `state.messages[idx].content` in-memory\n\n### What Stays the Same\n- Backend streams deltas the same way\n- `applyJobDelta` updates messages in-memory\n- No backend changes needed for branching\n\n### Streaming with Sessions\n\n```typescript\n// Existing streaming code mostly unchanged\nthis.applyJobDelta = async (jobId, parsed) => {\n const ctx = (this._jobCtx || {})[jobId];\n if (!ctx) return;\n \n const choice = Array.isArray(parsed.choices) ? parsed.choices[0] : null;\n const delta = choice?.delta || {};\n \n if (delta.content) {\n // Update in-memory array (same as before)\n if (ctx.chatId === this.currentChatId) {\n const idx = this.messages.findIndex(m => m.id === ctx.assistantMessageId);\n if (idx >= 0) {\n this.messages[idx].content += delta.content;\n }\n }\n \n // NEW: Debounce session save instead of immediate DB write\n this.debouncedSaveSession();\n }\n \n if (delta.reasoning) {\n // Same as before...\n this.messageReasoningMap[ctx.assistantMessageId] += delta.reasoning;\n this.debouncedSaveSession();\n }\n};\n\n// Debounced save helper\nthis.debouncedSaveSession = debounce(async () => {\n await saveSession(this);\n}, 500);\n```\n\n---\n\n## Export / Import - The Killer Feature\n\n### Export (Trivially Simple)\n\n**Single session:**\n```typescript\nasync function exportSession(sessionId) {\n const session = await db.sessions.get(sessionId);\n if (!session) return;\n \n // That's it. Literally just grab the session.\n const json = JSON.stringify(session, null, 2);\n \n // Download\n const blob = new Blob([json], { type: 'application/json' });\n const url = URL.createObjectURL(blob);\n const a = document.createElement('a');\n a.href = url;\n a.download = `${session.slug || session.id}-session.json`;\n a.click();\n URL.revokeObjectURL(url);\n}\n```\n\n**All data:**\n```typescript\nasync function exportAllData(state) {\n const sessions = await state.db.sessions.toArray();\n const folders = await state.db.folders.toArray();\n const systemPrompts = await state.db.systemPrompts.toArray();\n const notes = await state.db.notes.toArray();\n \n return {\n meta: {\n type: 'chatter-export-v11',\n exportedAt: Date.now(),\n version: 11\n },\n data: {\n sessions, // Each session is self-contained!\n folders,\n systemPrompts,\n notes\n }\n };\n}\n```\n\n### Import (Also Trivially Simple)\n\n**Single session:**\n```typescript\nasync function importSession(jsonFile) {\n const text = await jsonFile.text();\n const session = JSON.parse(text);\n \n // Validate basic structure\n if (!session.tree || !Array.isArray(session.tree.messages)) {\n throw new Error('Invalid session format');\n }\n \n // Remove old ID (will get new auto-increment ID)\n delete session.id;\n \n // Insert (that's it!)\n const newId = await db.sessions.add(session);\n return newId;\n}\n```\n\n**All data:**\n```typescript\nasync function importDataAppend(state, input) {\n const parsed = JSON.parse(input);\n const data = parsed.data || parsed;\n \n // Import sessions (no ID remapping needed!)\n for (const session of data.sessions || []) {\n delete session.id; // Get new ID\n await state.db.sessions.add(session);\n }\n \n // Import other tables (same as before)\n for (const folder of data.folders || []) {\n // ... handle folder remapping for folderId references\n }\n}\n```\n\n### Cross-App Compatibility\n\n**Why this is huge:**\n- Share a conversation = send one JSON file\n- Import into another app = just parse the JSON\n- Archive conversations = save JSON files\n- Backup strategy = export all sessions weekly\n- No complex graph rebuilding on import\n- No ID remapping for messages (they're local to session)\n\n---\n\n## Data Integrity & Safety\n\n### Cycle Prevention\n```typescript\nfunction validateNoCycles(session, newMessage) {\n if (newMessage.parentId === null) return true; // Root is always valid\n \n const visited = new Set();\n let currentId = newMessage.parentId;\n \n while (currentId != null) {\n if (visited.has(currentId)) {\n throw new Error('Cycle detected in message tree');\n }\n visited.add(currentId);\n \n const msg = session.tree.messages.find(m => m.id === currentId);\n if (!msg) break;\n currentId = msg.parentId;\n }\n \n return true;\n}\n```\n\n### Multi-Tab Safety\nWith atomic sessions, multi-tab conflicts are naturally handled:\n- Each tab loads session independently\n- Last write wins (standard Dexie behavior)\n- No partial state corruption (whole document is atomic)\n- Consider adding optimistic locking if needed:\n ```typescript\n session.version = (session.version || 0) + 1;\n ```\n\n### Orphaned Messages\n**Not a problem** with atomic sessions! Messages live in the tree even if no branch points to them. You can:\n1. Leave them (harmless, take up space but minimal)\n2. Add a cleanup tool to prune unreachable messages\n3. Show \"orphaned messages\" view for recovery\n\n---\n\n## Performance Considerations\n\n### What's Fast\n- ✅ Loading a session: One read, instant\n- ✅ Saving a session: One write, debounced\n- ✅ Sidebar list: Only loads metadata, not full trees\n- ✅ Linear conversations: No path building needed\n- ✅ Branch path building: O(depth) but depth is small (10-50 messages typical)\n\n### What to Watch\n- ⚠️ Very long conversations (500+ messages): Session size grows, but still manageable\n- ⚠️ Many branches (10+ per session): Path building gets slower, but rare\n- ⚠️ Rapid saves during streaming: Debounce to 500ms prevents DB thrashing\n\n### Optimization Strategies\n1. **Debounce saves**: Only write to disk every 500ms during streaming\n2. **Lazy load trees**: Sidebar only loads metadata, trees loaded on demand\n3. **Path caching**: Cache the current branch path in memory\n4. **Prune old branches**: Archive branches after X days of inactivity\n\n---\n\n## Rollout Plan\n\n### Phase 1: Atomic Sessions (No Branching) — 1-2 weeks\n**Goal**: Replace normalized tables with sessions, keep linear behavior. \n**Risk**: Low (keeps existing behavior, just changes storage)\n\n#### Schema & Migration\n- [x] Add Dexie v11 schema definition in `chatCore.js`\n- [x] Write migration upgrade function (chats+messages → sessions)\n- [ ] Add cycle detection validation\n- [x] Add migration error handling and logging\n- [ ] Test migration with sample data locally\n\n#### Core Functions\n- [x] Replace `loadChats()` → `loadSessions()` (metadata only)\n- [x] Replace `selectChat()` → `loadSession()` (full document)\n- [x] Add `saveSession()` function\n- [x] Add debounce helper for session saves\n- [x] Update `createNewChat()` to create session\n- [x] Update `deleteChat()` to delete session\n- [x] Update `duplicateChat()` to duplicate session\n\n#### Streaming Integration\n- [x] Update `sendMessage()` to use debounced saves\n- [x] Update `applyJobDelta()` to call `debouncedSaveSession()`\n- [x] Update `rerunFromUser()` to use sessions\n- [ ] Update `rerunAssistant()` to use sessions\n- [ ] Test streaming with rapid deltas\n\n#### Message Operations\n- [x] Update `deleteMessage()` to work with sessions\n- [x] Update `deleteMessagesBelow()` to work with sessions\n- [x] Update message editing to work with sessions\n- [x] Ensure reasoning map updates trigger saves\n\n#### Export/Import\n- [x] Simplify `exportAllData()` to include sessions\n- [x] Simplify `importDataReplace()` for sessions (no ID remapping)\n- [x] Simplify `importDataAppend()` for sessions\n- [x] Add single session export function\n- [x] Add single session import function\n- [ ] Test export/import round-trip\n\n#### Testing & Validation\n- [x] Fresh install works (no migration needed)\n- [ ] v10 → v11 migration runs successfully\n- [x] Verify all chats appear in sidebar\n- [x] Verify all messages present in each chat\n- [x] Test creating new chat\n- [x] Test sending messages\n- [x] Test streaming\n- [x] Test regenerate/rerun\n- [x] Test editing messages\n- [x] Test deleting messages\n- [x] Test deleting chats\n- [x] Test duplicate chat\n- [ ] Test export/import\n- [ ] Performance test: load chat with 100+ messages\n- [ ] Performance test: sidebar with 50+ chats\n\n#### Deployment\n- [ ] Code review\n- [ ] Deploy to staging/dev\n- [ ] Monitor browser console for migration errors\n- [ ] Validate in production-like environment\n- [ ] Deploy to production\n- [ ] Monitor for issues\n- [ ] Update documentation\n\n---\n\n### Phase 2: Enable Branching — 2-3 weeks after Phase 1\n**Goal**: Add UI for creating and switching branches. \n**Risk**: Medium (new UI patterns, user education needed)\n\n#### Core Branch Functions\n- [ ] Create `branchManager.js` module\n- [ ] Implement `enableBranching(sessionId)` function\n- [ ] Implement `forkAtMessage(sessionId, messageId)` function\n- [ ] Implement `switchBranch(sessionId, branchId)` function\n- [ ] Implement `archiveBranch(sessionId, branchId)` function\n- [ ] Implement `renameBranch(sessionId, branchId, newName)` function\n- [ ] Implement `buildMessagePath(session, branchId)` function\n- [ ] Add branch name uniqueness validation\n\n#### UI Components\n- [ ] Create branch selector dropdown component\n- [ ] Add \"Enable branching\" button to chat settings\n- [ ] Add \"Fork here\" button to message actions menu\n- [ ] Add branch indicator to chat header\n- [ ] Add branch count badge\n- [ ] Style branch UI elements\n- [ ] Add keyboard shortcuts for branch operations\n\n#### State Management\n- [ ] Add `currentBranchId` to app state\n- [ ] Add `sessionTree` to app state\n- [ ] Update `loadSession()` to handle branches\n- [ ] Update `saveSession()` to preserve branches\n- [ ] Add branch validation on save\n\n#### Streaming with Branches\n- [ ] Update `sendMessage()` to append to current branch\n- [ ] Update `applyJobDelta()` to write to current branch\n- [ ] Add validation: prevent streaming to inactive branch\n- [ ] Test streaming while switching branches\n- [ ] Test concurrent branch generation\n\n#### Fork/Regenerate\n- [ ] Update \"Regenerate\" to create sibling branch\n- [ ] Add UI to select which regeneration to keep\n- [ ] Test multiple alternatives at same point\n- [ ] Test switching between alternatives\n\n#### Export/Import with Branches\n- [ ] Verify session export includes full branch tree\n- [ ] Test import of branched sessions\n- [ ] Add branch count to export metadata\n- [ ] Test cross-app import (external tools)\n\n#### Testing\n- [ ] Enable branching for test session\n- [ ] Fork at various message points\n- [ ] Create 5+ branches in one session\n- [ ] Switch between branches rapidly\n- [ ] Test streaming to different branches\n- [ ] Test regenerate creates sibling\n- [ ] Test delete branch\n- [ ] Test rename branch\n- [ ] Test export/import branched session\n- [ ] Test orphaned message handling\n- [ ] Performance: switch between branches < 100ms\n- [ ] Performance: fork operation < 50ms\n\n#### Documentation & UX\n- [ ] Add tooltip explanations for branch features\n- [ ] Create user guide for branching\n- [ ] Add visual indicators for current branch\n- [ ] Add confirmation for destructive branch operations\n- [ ] Add undo for branch deletion\n\n#### Deployment\n- [ ] Deploy behind feature flag\n- [ ] Enable for beta users\n- [ ] Gather feedback\n- [ ] Fix bugs and iterate\n- [ ] Gradual rollout to all users\n- [ ] Monitor usage and performance\n- [ ] Update help documentation\n\n---\n\n### Phase 3: Advanced Features (Optional) — Future\n**Goal**: Enhance branching with power-user features. \n**Risk**: Low (all optional enhancements)\n\n#### Branch Visualization\n- [ ] Design tree view UI\n- [ ] Implement visual branch tree renderer\n- [ ] Add zoom/pan controls\n- [ ] Add click to switch branches from tree\n- [ ] Show branch names on tree nodes\n- [ ] Highlight current branch path\n\n#### Branch Operations\n- [ ] Implement branch merge/combine\n- [ ] Add diff view between branches\n- [ ] Add branch comparison tool\n- [ ] Add \"cherry-pick\" messages between branches\n- [ ] Add branch templates/favorites\n\n#### Analytics & Insights\n- [ ] Track which branches are used most\n- [ ] Track regeneration patterns\n- [ ] Show \"best path\" recommendations\n- [ ] Add branch quality scoring\n\n#### Collaboration Features\n- [ ] Export single branch as separate conversation\n- [ ] Import branch into existing session\n- [ ] Share specific branch via URL\n- [ ] Add branch annotations/comments\n\n#### Cleanup & Maintenance\n- [ ] Add \"Find orphaned messages\" tool\n- [ ] Add \"Prune unused branches\" function\n- [ ] Add \"Flatten to linear\" option\n- [ ] Auto-archive old branches\n\n#### Performance Optimizations\n- [ ] Implement path caching\n- [ ] Lazy-load branch trees\n- [ ] Virtual scrolling for large trees\n- [ ] Index optimization for branch queries\n\n---\n\n## Testing Checklist\n\n### Migration Testing\n- [ ] Fresh install works (no migration needed)\n- [ ] v10 → v11 migration runs successfully\n- [ ] All chats appear in sidebar after migration\n- [ ] All messages present in migrated chats\n- [ ] Settings/prompts preserved after migration\n- [ ] Export v10 → import v11 works\n- [ ] Export v11 → import v11 works (round-trip)\n\n### Linear Mode Testing\n- [ ] Create new chat works\n- [ ] Send message works\n- [ ] Streaming displays correctly\n- [ ] Regenerate works\n- [ ] Edit message works\n- [ ] Delete message works\n- [ ] Delete chat works\n- [ ] Duplicate chat works\n- [ ] Folder organization works\n- [ ] Search/filter works\n\n### Branching Testing (Phase 2)\n- [ ] Enable branching for session\n- [ ] Fork at any message creates branch\n- [ ] Switch between branches works\n- [ ] Each branch maintains independent content\n- [ ] Streaming to specific branch works\n- [ ] Regenerate creates sibling branch\n- [ ] Delete branch works\n- [ ] Rename branch works\n- [ ] Branch count shows correctly\n- [ ] Cannot create duplicate branch names\n\n### Performance Testing\n- [ ] Load chat with 100 messages: < 100ms\n- [ ] Load chat with 500 messages: < 500ms\n- [ ] Save session during streaming: < 50ms (debounced)\n- [ ] Switch between 5 branches: < 100ms\n- [ ] Sidebar with 100 chats: < 200ms\n- [ ] Export session with 200 messages: < 500ms\n- [ ] Import session: < 1s\n\n### Edge Cases\n- [ ] Empty session (no messages)\n- [ ] Session with only assistant greeting\n- [ ] Very long single message (10K+ chars)\n- [ ] Rapid branch switching\n- [ ] Stream interrupted mid-generation\n- [ ] Browser refresh during stream\n- [ ] Multi-tab editing (last write wins)\n- [ ] Orphaned messages (no branch points to them)\n\n---\n\n## Summary: Why Atomic Sessions Win\n\n### For Your Use Case\n✅ **Short Q&A chats** → Small, fast documents \n✅ **Portability priority** → One file = one conversation \n✅ **Simple export/import** → No complex ID remapping \n✅ **Easy to inspect** → Open JSON, see everything \n✅ **Client-side only** → No concurrency issues \n\n### What Changes\n- Replace `chats` + `messages` tables → `sessions` table\n- Load session: one read instead of JOIN\n- Save session: one write (debounced) instead of incremental\n- Export: grab session, done\n- Import: validate + insert, done\n\n### What Stays the Same\n- UI still uses `state.messages` linear array\n- Streaming still updates in-memory\n- Backend unchanged\n- Folder organization unchanged\n- All existing features work\n\n### Migration Path\n1. **Phase 1** (1-2 weeks): Migrate to sessions, keep linear behavior\n2. **Phase 2** (2-3 weeks): Add branching UI and features\n3. **Phase 3** (ongoing): Advanced branch features as needed\n\n### The Payoff\n- **Export a chat** → one line of code\n- **Import a chat** → one line of code \n- **Share with colleague** → send JSON file\n- **Archive conversations** → save files locally\n- **Cross-app compatibility** → any tool can read the format\n- **Future-proof** → structure is self-documenting and inspectable\n\n**Bottom line**: Atomic sessions trade theoretical scalability (which you don't need) for practical simplicity and portability (which you do need).\n\n---\n\n## Quick Reference: Implementation Checklist\n\n### Essential Steps (Phase 1)\n\n#### Step 1: Add v11 Schema (chatCore.js)\n- [x] Add Dexie v11 schema with `sessions` table\n- [x] Keep old `chats` and `messages` tables for migration\n- [x] Write `.upgrade()` function with migration logic\n- [x] Add migration logging and error handling\n\n```typescript\nstate.db.version(11).stores({\n sessions: '++id, title, slug, createdAt, folderId, updatedAt',\n chats: '++id, title, slug, createdAt, folderId, ...', // Keep for migration\n messages: '++id, chatId, createdAt, role, content, model', // Keep for migration\n folders: '++id, name, createdAt, order, collapsed',\n systemPrompts: '++id, name, content, systemPrompt, settings, createdAt, updatedAt',\n notes: '++id, title, content, createdAt, updatedAt'\n}).upgrade(async tx => {\n // See \"Migration Plan\" section for full code\n});\n```\n\n#### Step 2: Replace Core Functions (chatCore.js)\n- [x] Add `loadSessions()` - loads metadata only (for sidebar)\n- [x] Add `loadSession(id)` - loads full session document\n- [x] Add `saveSession()` - saves full session\n- [x] Add debounce helper (500ms delay)\n- [x] Update `createNewChat()` to create session\n- [x] Update `deleteChat()` to delete session\n- [x] Update `duplicateChat()` to duplicate session\n- [x] Keep `state.messages` array (UI compatibility!)\n\n#### Step 3: Update Streaming (chatterApp.js)\n- [x] Add `debouncedSaveSession` helper\n- [x] Update `sendMessage()` to call debounced save\n- [x] Update `applyJobDelta()` to call debounced save\n- [x] Update `rerunFromUser()` to use sessions\n- [ ] Test rapid streaming doesn't thrash DB\n\n```typescript\n// Add debounce helper\nthis.debouncedSaveSession = debounce(async () => {\n await saveSession(this);\n}, 500);\n\n// In applyJobDelta:\nif (delta.content) {\n this.messages[idx].content += delta.content;\n this.debouncedSaveSession(); // NEW\n}\n```\n\n#### Step 4: Simplify Export/Import (dataIO.js)\n- [x] Update `exportAllData()` to export sessions\n- [x] Simplify `importDataReplace()` - no ID remapping\n- [x] Simplify `importDataAppend()` - sessions are atomic\n- [x] Add single session export function\n- [x] Add single session import function\n\n```typescript\n// Single session export\nasync function exportSession(id) {\n const session = await db.sessions.get(id);\n return JSON.stringify(session, null, 2);\n}\n\n// Single session import\nasync function importSession(json) {\n const session = JSON.parse(json);\n delete session.id;\n return await db.sessions.add(session);\n}\n```\n\n#### Step 5: Test Migration\n- [ ] Export all v10 data as backup\n- [ ] Test migration on copy of real data\n- [ ] Verify session count = chat count\n- [ ] Spot-check messages in random sessions\n- [ ] Test creating new chat\n- [ ] Test sending messages\n- [ ] Test streaming\n- [ ] Test regenerate\n- [ ] Test delete/edit\n- [ ] Test export/import round-trip\n- [ ] Performance test with large chats\n\n#### Step 6: Deploy\n- [ ] Code review\n- [ ] Deploy to dev/staging\n- [ ] Monitor migration logs\n- [ ] Validate in production-like environment\n- [ ] Deploy to production\n- [ ] Monitor for errors in first 24h\n- [ ] Keep v10 tables for 1-2 weeks (safety)\n- [ ] Update documentation\n\n---\n\n## Files to Modify\n\n### Phase 1: Core Files (Must Change)\n\n#### `frontend/core/chatCore.js`\n**Purpose**: Database schema and core data operations \n**Current**: v10 schema with normalized `chats` + `messages` tables \n**Changes needed**:\n- Add Dexie v11 schema with `sessions` table\n- Write migration `.upgrade()` function\n- Replace `loadChats()` → `loadSessions()` (metadata only)\n- Replace `selectChat()` → `loadSession()` (full document)\n- Add `saveSession()` function\n- Update `createNewChat()` to create session\n- Update `deleteChat()` to delete session\n- Update `duplicateChat()` to duplicate session\n- Keep message CRUD operations for backward compatibility (optional)\n\n**Key functions to modify**:\n```javascript\nexport async function initDb(state) // Add v11 schema\nexport async function loadSessions(state) // NEW - replace loadChats\nexport async function loadSession(state, id) // NEW - replace selectChat\nexport async function saveSession(state) // NEW - debounced save\nexport async function createNewChat(state) // Update to create session\nexport async function deleteChat(state, id) // Update to delete session\nexport async function duplicateChat(state, id) // Update to duplicate session\n```\n\n---\n\n#### `frontend/chatterApp.js`\n**Purpose**: Main application state and streaming logic \n**Current**: Incremental message saves to Dexie \n**Changes needed**:\n- Add `debouncedSaveSession` helper function\n- Update `sendMessage()` to use debounced saves\n- Update `applyJobDelta()` to call `debouncedSaveSession()`\n- Update `rerunFromUser()` to work with sessions\n- Update `rerunAssistant()` to work with sessions\n- Keep `state.messages` array (UI compatibility)\n\n**Key sections to modify**:\n```javascript\n// Add in init()\nthis.debouncedSaveSession = debounce(async () => {\n await saveSession(this);\n}, 500);\n\n// In applyJobDelta (around line 1591)\nif (delta.content) {\n this.messages[idx].content += delta.content;\n this.debouncedSaveSession(); // ADD THIS\n}\n\n// In sendMessage (around line 1545)\n// Replace individual message saves with debouncedSaveSession()\n\n// In rerunFromUser (around line 1383)\n// Replace individual message saves with debouncedSaveSession()\n```\n\n---\n\n#### `frontend/dataIO.js`\n**Purpose**: Export and import functionality \n**Current**: Complex ID remapping for normalized tables \n**Changes needed**:\n- Update `exportAllData()` to export sessions instead of chats+messages\n- Simplify `importDataReplace()` - no ID remapping needed\n- Simplify `importDataAppend()` - sessions are atomic\n- Add `exportSession(id)` for single session export\n- Add `importSession(json)` for single session import\n\n**Key functions to modify**:\n```javascript\nexport async function exportAllData(state)\nexport async function importDataReplace(state, input)\nexport async function importDataAppend(state, input)\n// Add these new functions:\nexport async function exportSession(state, id)\nexport async function importSession(state, json)\n```\n\n---\n\n### Phase 1: Secondary Files (May Need Updates)\n\n#### `frontend/init.js`\n**Purpose**: Alpine.js initialization and presetsPanel \n**Current**: Has its own Dexie schema (up to v7) \n**Changes needed**:\n- Update presetsPanel `initDb()` to include v11 for consistency\n- Keep v10 definitions for backward compatibility\n- No functional changes (presets are separate table)\n\n**Section to update** (around line 31):\n```javascript\ninitDb() {\n // ... existing versions ...\n // Add v11 to match chatCore.js\n this.db.version(11).stores({\n sessions: '++id, title, slug, createdAt, folderId, updatedAt',\n chats: '++id, title, slug, createdAt, folderId, ...',\n messages: '++id, chatId, createdAt, role, content, model',\n folders: '++id, name, createdAt, order, collapsed',\n systemPrompts: '++id, name, content, systemPrompt, settings, createdAt, updatedAt',\n notes: '++id, title, content, createdAt, updatedAt'\n });\n}\n```\n\n---\n\n#### `frontend/messageEditing.js`\n**Purpose**: Inline message editing \n**Current**: Saves individual messages to Dexie \n**Changes needed**:\n- Replace `db.messages.put()` with `saveSession()`\n- Ensure edits trigger debounced session save\n\n**Functions to update**:\n```javascript\nexport async function commitEditingMessage(state)\n// Replace db.messages.put() with saveSession()\n```\n\n---\n\n### Phase 1: Files That DON'T Need Changes\n\n✅ **`backend/` (entire directory)** - Backend is stateless, no changes needed \n✅ **`frontend/components/*.html`** - UI components use `state.messages` (unchanged) \n✅ **`frontend/apiClient.js`** - API calls unchanged \n✅ **`frontend/chatterLib.js`** - Helper functions unchanged \n✅ **`frontend/contentRenderers.js`** - Rendering unchanged \n✅ **`frontend/dragDrop.js`** - Drag/drop unchanged \n✅ **`frontend/i18n.js`** - Internationalization unchanged \n✅ **`frontend/preferences.js`** - Settings persistence unchanged \n✅ **`frontend/presets.js`** - Presets system unchanged \n✅ **`frontend/timerUtils.js`** - Timer utils unchanged \n✅ **`frontend/traceUI.js`** - Trace UI unchanged \n✅ **`frontend/uiTools.js`** - UI utilities unchanged \n\n---\n\n### Phase 2: New Files to Create (Branching)\n\n#### `frontend/core/branchManager.js` (NEW)\n**Purpose**: Branch operations and management \n**Functions to implement**:\n```javascript\nexport async function enableBranching(state, sessionId)\nexport async function forkAtMessage(state, sessionId, messageId)\nexport async function switchBranch(state, sessionId, branchId)\nexport async function archiveBranch(state, sessionId, branchId)\nexport async function renameBranch(state, sessionId, branchId, newName)\nexport function buildMessagePath(session, branchId)\nexport function validateNoCycles(session, newMessage)\n```\n\n---\n\n#### `frontend/components/branchSelector.html` (NEW)\n**Purpose**: Branch dropdown UI component \n**Features**:\n- Show all branches for current session\n- Highlight active branch\n- Switch between branches\n- Create new branch\n- Rename/delete branches\n\n---\n\n#### `frontend/components/branchVisualizer.html` (NEW - Optional)\n**Purpose**: Visual tree view of branches \n**Features**:\n- SVG/Canvas tree rendering\n- Click nodes to switch branches\n- Zoom/pan controls\n- Show branch names and dates\n\n---\n\n### Reference: Current File Structure\n\n```\n/Users/janzheng/localhost/smallweb/chatter/\n├── backend/\n│ ├── config.js ✅ No changes\n│ ├── index.js ✅ No changes\n│ ├── routes/\n│ │ ├── chatStream.js ✅ No changes\n│ │ ├── chatStreamSSE.js ✅ No changes\n│ │ ├── jobs.js ✅ No changes\n│ │ ├── search.js ✅ No changes\n│ │ ├── static.js ✅ No changes\n│ │ ├── styles.js ✅ No changes\n│ │ └── system.js ✅ No changes\n│ └── utils.js ✅ No changes\n├── frontend/\n│ ├── apiClient.js ✅ No changes\n│ ├── chatterApp.js ✏️ MODIFY - streaming & saves\n│ ├── chatterLib.js ✅ No changes\n│ ├── components/\n│ │ ├── appSettings.html ✅ No changes\n│ │ ├── chatControls.html ✅ No changes\n│ │ ├── chatWindow.html ✅ No changes\n│ │ ├── globalMenu.html ✅ No changes\n│ │ ├── sidebarDesktop.html ✅ No changes\n│ │ └── sidebarMobile.html ✅ No changes\n│ ├── contentRenderers.js ✅ No changes\n│ ├── core/\n│ │ ├── chatCore.js ✏️ MODIFY - schema & core ops\n│ │ ├── jobManager.js ✅ No changes\n│ │ └── branchManager.js 📄 NEW (Phase 2)\n│ ├── dataIO.js ✏️ MODIFY - export/import\n│ ├── dragDrop.js ✅ No changes\n│ ├── experimental/\n│ │ └── streaming.js ✅ No changes\n│ ├── i18n.js ✅ No changes\n│ ├── init.js ✏️ MINOR - schema sync\n│ ├── messageEditing.js ✏️ MODIFY - use sessions\n│ ├── preferences.js ✅ No changes\n│ ├── presets.js ✅ No changes\n│ ├── timerUtils.js ✅ No changes\n│ ├── traceUI.js ✅ No changes\n│ └── uiTools.js ✅ No changes\n├── BRANCH_DATA_MODEL.md 📖 This document\n├── chatCompletion.js ✅ No changes\n├── chatStreaming.js ✅ No changes\n├── index.html ✅ No changes\n├── jsonUtils.js ✅ No changes\n└── main.js ✅ No changes\n```\n\n---\n\n### Summary of Changes\n\n| File | Lines of Code | Complexity | Phase |\n|------|---------------|------------|-------|\n| `frontend/core/chatCore.js` | ~200-300 new/modified | High | 1 |\n| `frontend/chatterApp.js` | ~50-100 modified | Medium | 1 |\n| `frontend/dataIO.js` | ~100-150 modified | Medium | 1 |\n| `frontend/init.js` | ~10 new | Low | 1 |\n| `frontend/messageEditing.js` | ~20 modified | Low | 1 |\n| `frontend/core/branchManager.js` | ~200-300 new | High | 2 |\n| `frontend/components/branchSelector.html` | ~100-150 new | Medium | 2 |\n\n**Total estimated changes**: ~800-1,000 lines of code across 5 files (Phase 1) \n**New code**: ~300-500 lines (Phase 2)\n\n---\n\n## Key Concepts Summary\n\n| Concept | Old (v10) | New (v11) |\n|---------|-----------|-----------|\n| **Storage** | Normalized tables | Atomic documents |\n| **Load chat** | JOIN query | Single read |\n| **Save message** | Individual writes | Debounced full save |\n| **Export** | Serialize + remap IDs | Grab session |\n| **Import** | Parse + remap IDs | Validate + insert |\n| **Branches** | Not supported | Embedded tree |\n| **Portability** | Complex | Trivial |\n\n---\n\n## Need Help?\n\n**Common issues:**\n- Migration stuck? Check browser console for errors\n- Messages missing? Check `session.tree.messages` array\n- Streaming not saving? Check debounce is working\n- Can't import? Validate JSON structure matches schema\n\n**Debug tools:**\n```javascript\n// In browser console:\nconst db = new Dexie('chat_db');\nawait db.open();\n\n// Check sessions\nconst sessions = await db.sessions.toArray();\nconsole.log('Sessions:', sessions);\n\n// Check a specific session\nconst session = await db.sessions.get(1);\nconsole.log('Session tree:', session.tree);\n\n// Check migration status\nconsole.log('DB version:', db.verno);\n```\n\n",[],[384],"caf0b730-9764-11f0-b6fe-0224a6c84d84",".vtignore","f77226d2-7616-11f0-baaa-0224a6c84d84",207,["D",1758511960565],".git\n.vscode\n.cursorrules\n.DS_Store\nnode_modules\nfrontend/vendor/",[],[392],"f756687a-7616-11f0-99b1-0224a6c84d84",".gitignore","f7566974-7616-11f0-99b1-0224a6c84d84",13,["D",1754850145313],".env\n.DS_Store",[],[400],"bb41cffe-8526-11f0-b180-0224a6c84d84","fetch_vendor.js","bb41d09e-8526-11f0-b180-0224a6c84d84","bae9ad6a-8526-11f0-9a69-0224a6c84d84",116,["D",1756506184522],"// Download and vendor client-side libraries for offline use\n\nconst targets = [\n { url: 'https://unpkg.com/dexie@4.2.0/dist/dexie.min.js', path: 'frontend/vendor/dexie.min.js' },\n { url: 'https://unpkg.com/alpinejs@3.14.9/dist/cdn.min.js', path: 'frontend/vendor/alpine.min.js' },\n { url: 'https://cdn.jsdelivr.net/npm/marked@12.0.2/marked.min.js', path: 'frontend/vendor/marked.min.js' },\n { url: 'https://cdn.jsdelivr.net/npm/dompurify@3.1.6/dist/purify.min.js', path: 'frontend/vendor/purify.min.js' },\n { url: 'https://code.iconify.design/3/3.1.1/iconify.min.js', path: 'frontend/vendor/iconify.min.js' },\n { url: 'https://cdn.tailwindcss.com', path: 'frontend/vendor/tailwind-cdn.js' },\n];\n\nasync function ensureDirFor(filePath) {\n const parts = filePath.split('/');\n parts.pop();\n const dir = parts.join('/');\n try { await Deno.mkdir(dir, { recursive: true }); } catch (_) {}\n}\n\nfor (const t of targets) {\n try {\n const res = await fetch(t.url);\n if (!res.ok) throw new Error(`HTTP ${res.status}`);\n const text = await res.text();\n await ensureDirFor(t.path);\n await Deno.writeTextFile(t.path, text);\n console.log('[vendor] saved', t.path, `(${text.length} bytes)`);\n } catch (err) {\n console.error('[vendor] failed', t.url, '->', t.path, err);\n Deno.exit(1);\n }\n}\n\n\n",[],[416,408],"scripts","bba06afa-8526-11f0-9cb9-0224a6c84d84","build_css.js","bba06bcc-8526-11f0-9cb9-0224a6c84d84",128,["D",1756506184509],"// Simple build step: concatenate app.scss + theme files into a single CSS file\n// Our SCSS uses only valid CSS syntax, so concatenation is safe\n\nconst APP = 'frontend/styles/app.scss';\nconst THEME_LIGHT = 'frontend/styles/themes/_light.scss';\nconst THEME_DARK = 'frontend/styles/themes/_dark.scss';\nconst OUTPUT = 'frontend/styles/app.css';\n\nasync function readIfExists(path) {\n try { return await Deno.readTextFile(path); } catch { return ''; }\n}\n\ntry {\n const app = await readIfExists(APP);\n const light = await readIfExists(THEME_LIGHT);\n const dark = await readIfExists(THEME_DARK);\n const out = `${app}\\n\\n/* === light theme === */\\n${light}\\n\\n/* === dark theme === */\\n${dark}\\n`;\n await Deno.writeTextFile(OUTPUT, out);\n console.log(`[build:css] Wrote ${OUTPUT} (${out.length} bytes)`);\n} catch (err) {\n console.error('[build:css] failed', err);\n Deno.exit(1);\n}\n\n\n",[],[416,418],"bae9aca2-8526-11f0-9a69-0224a6c84d84",108,["D",1756506183953],[265,266],[416],"f32c22c4-88fb-11f0-8e3c-0224a6c84d84","uiTools.js","f32c236e-88fb-11f0-8e3c-0224a6c84d84","f64a4398-7616-11f0-baaa-0224a6c84d84",170,["D",1756927614633],"// UI helper functions extracted from chatterApp.js\n\nexport function applyAppFont(ctx) {\n const root = document.documentElement;\n if (!root || !root.style) return;\n const mono = `'Menlo', 'Monaco', 'Consolas', 'Liberation Mono', 'Courier New', monospace`;\n const sans = `'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, 'Noto Sans', sans-serif`;\n const serif = `'Georgia', 'Times New Roman', Times, serif`;\n if (ctx.appFontChoice === 'sans') {\n root.style.setProperty('--font-body', sans);\n root.style.setProperty('--font-headings', sans);\n } else if (ctx.appFontChoice === 'serif') {\n root.style.setProperty('--font-body', serif);\n root.style.setProperty('--font-headings', serif);\n } else {\n root.style.setProperty('--font-body', mono);\n root.style.setProperty('--font-headings', sans);\n }\n}\n\nexport function applyThemePreference(ctx) {\n const root = document.documentElement;\n if (!root) return;\n const pref = ctx.themePreference || 'auto';\n if (pref === 'light') root.setAttribute('data-theme', 'light');\n else if (pref === 'dark') root.setAttribute('data-theme', 'dark');\n else root.removeAttribute('data-theme');\n try {\n // Use ctx.themeClass getter for logging context\n // eslint-disable-next-line no-console\n console.log('[theme] applied ->', pref, 'data-theme=', root.getAttribute('data-theme'), 'class=', ctx.themeClass);\n } catch (_) { /* ignore */ }\n}\n\nexport function initSystemPromptAutosize(ctx) {\n const sels = [\n 'textarea[x-model=\"systemPrompt\"]',\n 'textarea[x-model=\"chatPromptText\"]'\n ];\n const els = document.querySelectorAll(sels.join(','));\n els.forEach((el) => {\n try {\n el.style.height = 'auto';\n el.style.height = Math.min(el.scrollHeight, 320) + 'px';\n } catch (_) { /* ignore */ }\n });\n}\n\nexport function autoResize(ctx, e) {\n const el = e && e.target;\n if (!el) return;\n try {\n el.style.height = 'auto';\n el.style.height = Math.min(el.scrollHeight, 320) + 'px';\n } catch (_) { /* ignore */ }\n}\n\nexport function queueScrollToBottom(ctx) {\n try {\n const el = ctx.$refs && ctx.$refs.traceContainer;\n if (!el) return;\n const doScroll = () => { el.scrollTop = el.scrollHeight; };\n if (typeof ctx.$nextTick === 'function') ctx.$nextTick(doScroll);\n else requestAnimationFrame(doScroll);\n } catch (_) { /* ignore */ }\n}\n\nexport function queueScrollReasoningById(ctx, messageId) {\n const el = document.querySelector('[data-reasoning-id=\"' + messageId + '\"]');\n if (!el) return;\n const doScroll = () => { el.scrollTop = el.scrollHeight; };\n if (typeof ctx.$nextTick === 'function') ctx.$nextTick(doScroll);\n else requestAnimationFrame(doScroll);\n}\n\nexport function renderMarkdown(text) {\n const raw = String(text || '');\n try {\n const html = (window.marked ? window.marked.parse(raw) : raw);\n return (window.DOMPurify ? window.DOMPurify.sanitize(html) : html);\n } catch (_) { return raw; }\n}\n\n\n",[],[182,431],"34420d4a-a432-11f0-a1d8-0224a6c84d84","types.ts","34420e08-a432-11f0-a1d8-0224a6c84d84",223,["D",1759919598049],"// Central type definitions for Chatter\n// This is the single source of truth for all data structures\n\n// ============================================================================\n// Core Session & Message Types\n// ============================================================================\n\nexport interface Message {\n id: number;\n parentId: number | null;\n createdAt: number;\n role: 'user' | 'assistant' | 'system';\n content: string;\n reasoning?: string;\n model?: string | null;\n promptLabel?: string | null;\n depth?: number;\n}\n\nexport interface Branch {\n id: number;\n leafMessageId: number | null;\n name: string;\n baseMessageId?: number | null;\n createdAt: number;\n updatedAt?: number;\n}\n\nexport interface SessionTree {\n messages: Message[];\n branches: Branch[];\n activeBranchId: number | null;\n branchingEnabled: boolean;\n}\n\nexport interface ChatSettings {\n selectedModel?: string;\n customChatBaseUrl?: string;\n temperature?: number;\n maxTokens?: number;\n reasoningEffort?: 'low' | 'medium' | 'high';\n streamEnabled?: boolean;\n jsonMode?: boolean;\n useBrowserSearch?: boolean;\n useCodeInterpreter?: boolean;\n}\n\nexport interface Session {\n id?: number;\n title: string;\n slug?: string;\n createdAt: number;\n updatedAt: number;\n folderId?: number | null;\n systemPromptId?: number | null;\n activeSettingsSource?: 'preset' | 'custom' | null;\n tree: SessionTree;\n settings?: ChatSettings;\n systemPrompt?: string;\n}\n\n// ============================================================================\n// Legacy Types (for backward compatibility)\n// ============================================================================\n\nexport interface LegacyChat {\n id: number;\n title: string;\n slug?: string;\n createdAt: number;\n folderId?: number | null;\n systemPromptId?: number | null;\n systemPromptText?: string;\n settings?: ChatSettings;\n activeSettingsSource?: 'preset' | 'custom' | null;\n customPromptText?: string;\n}\n\nexport interface LegacyMessage {\n id?: number;\n chatId: number;\n createdAt: number;\n role: 'user' | 'assistant' | 'system';\n content: string;\n reasoning?: string;\n model?: string | null;\n promptLabel?: string | null;\n}\n\n// ============================================================================\n// UI State Types\n// ============================================================================\n\nexport interface UIMessage {\n id?: number;\n role: 'user' | 'assistant' | 'system';\n content: string;\n reasoning?: string;\n createdAt: number;\n chatId?: number;\n model?: string | null;\n promptLabel?: string | null;\n}\n\n// ============================================================================\n// Folder & Organization Types\n// ============================================================================\n\nexport interface Folder {\n id: number;\n name: string;\n createdAt: number;\n order: number;\n collapsed: boolean;\n}\n\n// ============================================================================\n// Preset Types\n// ============================================================================\n\nexport interface SystemPrompt {\n id: number;\n name: string;\n content: string;\n systemPrompt?: string;\n settings?: ChatSettings;\n shortId?: string;\n createdAt: number;\n updatedAt: number;\n}\n\n// ============================================================================\n// Note Types\n// ============================================================================\n\nexport interface Note {\n id: number;\n title: string;\n content: string;\n createdAt: number;\n updatedAt: number;\n}\n\n// ============================================================================\n// Export/Import Types\n// ============================================================================\n\nexport interface ExportData {\n meta: {\n type: string;\n schemaVersion: number;\n exportedAt: number;\n };\n data: {\n sessions: Session[];\n chats: LegacyChat[];\n messages: LegacyMessage[];\n folders: Folder[];\n systemPrompts: SystemPrompt[];\n notes: Note[];\n };\n}\n\n// ============================================================================\n// Streaming & Job Types\n// ============================================================================\n\nexport interface StreamingDelta {\n content?: string;\n reasoning?: string;\n executed_tools?: Array<{\n name?: string;\n tool?: string;\n function?: { name?: string };\n arguments?: any;\n input?: any;\n params?: any;\n output?: any;\n result?: any;\n content?: any;\n }>;\n tool_calls?: Array<{\n name?: string;\n tool?: string;\n function?: { name?: string };\n arguments?: any;\n input?: any;\n params?: any;\n }>;\n}\n\nexport interface ChatCompletionChoice {\n delta?: StreamingDelta;\n message?: {\n role: string;\n content: string;\n };\n}\n\nexport interface ChatCompletionResponse {\n choices: ChatCompletionChoice[];\n}\n\nexport interface JobPayload {\n messages: Array<{ role: string; content: string }>;\n userApiKey?: string;\n model: string;\n base_url?: string;\n temperature?: number;\n top_p?: number;\n stop?: string | string[];\n max_tokens?: number;\n response_format?: { type: string };\n reasoning_effort?: string;\n tools?: Array<{ type: string }>;\n}\n\n// ============================================================================\n// Helper Functions for Type Guards\n// ============================================================================\n\nexport function isSession(obj: any): obj is Session {\n return obj && typeof obj === 'object' && 'tree' in obj && typeof obj.tree === 'object';\n}\n\nexport function isMessage(obj: any): obj is Message {\n return obj && typeof obj === 'object' && 'role' in obj && 'content' in obj;\n}\n\nexport function isBranch(obj: any): obj is Branch {\n return obj && typeof obj === 'object' && 'id' in obj && 'leafMessageId' in obj;\n}\n\n// ============================================================================\n// Helper Functions for Creating Default Objects\n// ============================================================================\n\nexport function createDefaultMessage(partial: Partial = {}): Message {\n return {\n id: partial.id ?? 0,\n parentId: partial.parentId ?? null,\n createdAt: partial.createdAt ?? Date.now(),\n role: partial.role ?? 'user',\n content: partial.content ?? '',\n reasoning: partial.reasoning,\n model: partial.model,\n promptLabel: partial.promptLabel,\n depth: partial.depth ?? 0,\n };\n}\n\nexport function createDefaultBranch(partial: Partial = {}): Branch {\n return {\n id: partial.id ?? 1,\n leafMessageId: partial.leafMessageId ?? null,\n name: partial.name ?? 'main',\n baseMessageId: partial.baseMessageId,\n createdAt: partial.createdAt ?? Date.now(),\n updatedAt: partial.updatedAt,\n };\n}\n\nexport function createDefaultSessionTree(partial: Partial = {}): SessionTree {\n return {\n messages: partial.messages ?? [],\n branches: partial.branches ?? [createDefaultBranch()],\n activeBranchId: partial.activeBranchId ?? 1,\n branchingEnabled: partial.branchingEnabled ?? true,\n };\n}\n\nexport function createDefaultSession(partial: Partial = {}): Session {\n return {\n id: partial.id,\n title: partial.title ?? 'New chat',\n slug: partial.slug,\n createdAt: partial.createdAt ?? Date.now(),\n updatedAt: partial.updatedAt ?? Date.now(),\n folderId: partial.folderId,\n systemPromptId: partial.systemPromptId,\n activeSettingsSource: partial.activeSettingsSource,\n tree: partial.tree ?? createDefaultSessionTree(),\n settings: partial.settings,\n systemPrompt: partial.systemPrompt,\n };\n}\n\n// ============================================================================\n// Helper Functions for Message Operations\n// ============================================================================\n\n/**\n * Safely get or create reasoning content for a message\n */\nexport function getMessageReasoning(message: Message | UIMessage): string {\n return message.reasoning != null ? String(message.reasoning) : '';\n}\n\n/**\n * Set reasoning content on a message (immutable)\n */\nexport function setMessageReasoning(message: Message, reasoning: string): Message {\n return { ...message, reasoning };\n}\n\n/**\n * Check if a message has reasoning content\n */\nexport function hasReasoning(message: Message | UIMessage): boolean {\n return message.reasoning != null && message.reasoning.length > 0;\n}\n\n/**\n * Convert a UIMessage to a Message for storage\n */\nexport function uiMessageToMessage(uiMsg: UIMessage, idx: number, parentId: number | null): Message {\n return {\n id: uiMsg.id ?? idx + 1,\n parentId,\n createdAt: uiMsg.createdAt,\n role: uiMsg.role,\n content: uiMsg.content,\n reasoning: uiMsg.reasoning,\n model: uiMsg.model,\n promptLabel: uiMsg.promptLabel,\n depth: idx,\n };\n}\n\n/**\n * Convert a Message to a UIMessage for display\n */\nexport function messageToUIMessage(msg: Message): UIMessage {\n return {\n id: msg.id,\n role: msg.role,\n content: msg.content,\n reasoning: msg.reasoning,\n createdAt: msg.createdAt,\n model: msg.model,\n promptLabel: msg.promptLabel,\n };\n}\n\n// ============================================================================\n// Helper Functions for Session Operations\n// ============================================================================\n\n/**\n * Get the next available message ID in a session\n */\nexport function getNextMessageId(session: Session): number {\n const messages = session.tree?.messages ?? [];\n const maxId = messages.reduce((max, m) => Math.max(max, m.id), 0);\n return maxId + 1;\n}\n\n/**\n * Get the next available branch ID in a session\n */\nexport function getNextBranchId(session: Session): number {\n const branches = session.tree?.branches ?? [];\n const maxId = branches.reduce((max, b) => Math.max(max, b.id), 0);\n return maxId + 1;\n}\n\n/**\n * Get a message by ID from a session\n */\nexport function getMessageById(session: Session, messageId: number): Message | null {\n const messages = session.tree?.messages ?? [];\n return messages.find(m => m.id === messageId) ?? null;\n}\n\n/**\n * Get a branch by ID from a session\n */\nexport function getBranchById(session: Session, branchId: number): Branch | null {\n const branches = session.tree?.branches ?? [];\n return branches.find(b => b.id === branchId) ?? null;\n}\n\n/**\n * Get the active branch from a session\n */\nexport function getActiveBranch(session: Session): Branch | null {\n const tree = session.tree;\n if (!tree || tree.activeBranchId == null) return null;\n return getBranchById(session, tree.activeBranchId);\n}\n\n",[],[182,440],"c7c8c2aa-88ff-11f0-9c4d-0224a6c84d84","traceUI.js","c7c8c34a-88ff-11f0-9c4d-0224a6c84d84",172,["D",1756929259792],"// Trace and reasoning UI helpers extracted from chatterApp.js\n\nexport function computeTraceMaxHeight(ctx) {\n return ctx.traceExpanded ? '' : 'max-height: 100px';\n}\n\nexport function toggleTool(ctx, idx) {\n ctx.expandedToolMap[idx] = !ctx.expandedToolMap[idx];\n ctx.queueScrollToBottom && ctx.queueScrollToBottom();\n}\n\nexport function toggleReasoning(ctx, messageId) {\n if (messageId == null) return;\n ctx.expandedReasoningMap[messageId] = !ctx.expandedReasoningMap[messageId];\n ctx.queueScrollReasoningById && ctx.queueScrollReasoningById(messageId);\n}\n\nexport function prettify(obj) {\n try { return JSON.stringify(obj, null, 2); } catch (_) { return String(obj); }\n}\n\nexport async function copyEventsJson(ctx) {\n try {\n const json = JSON.stringify(ctx.traceEvents || [], null, 2);\n await navigator.clipboard.writeText(json);\n ctx.copyEventsText = 'copied';\n if (ctx.copyEventsTimeoutId) clearTimeout(ctx.copyEventsTimeoutId);\n ctx.copyEventsTimeoutId = setTimeout(() => {\n ctx.copyEventsText = 'copy json';\n ctx.copyEventsTimeoutId = null;\n }, 3000);\n } catch (_) {\n // no-op\n }\n}\n\n\n",[],[182,448],"f325ee18-88fb-11f0-b80d-0224a6c84d84","timerUtils.js","f325eecc-88fb-11f0-b80d-0224a6c84d84",169,["D",1756927614594],"// Timer utilities extracted from chatterApp.js\n\nexport function getDisplayTimerText(ctx) {\n if (ctx.timerFrozenText) return ctx.timerFrozenText;\n if (!ctx.timerStartMs) return '';\n const elapsed = (ctx.timerElapsedMs || 0) / 1000;\n const seconds = Math.floor(elapsed);\n const hundredths = Math.floor((elapsed - seconds) * 100);\n const s = String(seconds).padStart(2, '0');\n const h = String(hundredths).padStart(2, '0');\n return `${s}.${h}s`;\n}\n\nexport function startTimer(ctx) {\n // Clear any existing interval without invoking ctx.stopTimer to avoid recursion\n if (ctx.timerIntervalId) {\n try { clearInterval(ctx.timerIntervalId); } catch (_) { /* ignore */ }\n ctx.timerIntervalId = null;\n }\n ctx.timerFrozenText = '';\n ctx.timerStartMs = Date.now();\n ctx.timerElapsedMs = 0;\n ctx.timerIntervalId = setInterval(() => {\n ctx.timerElapsedMs = Date.now() - ctx.timerStartMs;\n }, 30);\n}\n\nexport function stopTimer(ctx) {\n if (ctx.timerIntervalId) {\n try { clearInterval(ctx.timerIntervalId); } catch (_) { /* ignore */ }\n ctx.timerIntervalId = null;\n }\n if (ctx.timerStartMs) {\n const elapsed = (ctx.timerElapsedMs || (Date.now() - ctx.timerStartMs)) / 1000;\n const seconds = Math.floor(elapsed);\n const hundredths = Math.floor((elapsed - seconds) * 100);\n const s = String(seconds).padStart(2, '0');\n const h = String(hundredths).padStart(2, '0');\n ctx.timerFrozenText = `${s}.${h}s...done`;\n }\n ctx.timerStartMs = null;\n ctx.timerElapsedMs = 0;\n}\n\n\n",[],[182,456],"868dc074-a434-11f0-ab9d-0224a6c84d84","settingsActions.js","868dc11e-a434-11f0-ab9d-0224a6c84d84",250,["D",1759920595099],"/**\n * Settings Actions\n * Handles API key, system prompt, and general settings operations\n */\n\nimport { checkServerKey as apiCheckServerKey } from './apiClient.js';\n\n/**\n * Check if the server has a key configured\n * @param {Object} state - The Alpine.js state object\n */\nexport async function checkServerKey(state) {\n try {\n const data = await apiCheckServerKey();\n state.hasServerKey = !!data.hasServerKey;\n } catch (error) {\n console.error('Error checking server key:', error);\n state.hasServerKey = false;\n }\n}\n\n/**\n * Set/save API key from input\n * @param {Object} state - The Alpine.js state object\n */\nexport function setApiKey(state) {\n if (state.apiKeyInput.trim()) {\n state.userApiKey = state.apiKeyInput.trim();\n localStorage.setItem('groq_api_key', state.userApiKey);\n state.apiKeyInput = '';\n }\n}\n\n/**\n * Clear the API key input (prepare to change)\n * @param {Object} state - The Alpine.js state object\n */\nexport function changeApiKey(state) {\n state.userApiKey = '';\n}\n\n/**\n * Clear/remove the API key completely\n * @param {Object} state - The Alpine.js state object\n */\nexport function clearApiKey(state) {\n state.userApiKey = '';\n localStorage.removeItem('groq_api_key');\n}\n\n/**\n * Toggle system prompt panel\n * @param {Object} state - The Alpine.js state object\n */\nexport function toggleSystemPromptOpen(state) {\n state.systemPromptOpen = !state.systemPromptOpen;\n try { localStorage.setItem('system_prompt_open', state.systemPromptOpen ? '1' : '0'); } catch (_) { /* ignore */ }\n if (state.systemPromptOpen) {\n try { state.$nextTick(() => state.initSystemPromptAutosize()); } catch (_) { /* ignore */ }\n }\n}\n\n/**\n * Handle system prompt input (with debounced save)\n * @param {Object} state - The Alpine.js state object\n * @param {Event} e - The input event\n */\nexport function onSystemPromptInput(state, e) {\n try {\n const el = e && e.target; if (el) state.autoResize({ target: el });\n } catch (_) { /* ignore */ }\n const text = typeof state.systemPrompt === 'string' ? state.systemPrompt : '';\n if (state.systemPromptDebounceId) clearTimeout(state.systemPromptDebounceId);\n state.systemPromptDebounceId = setTimeout(() => {\n try { localStorage.setItem('system_prompt', text); } catch (_) { /* ignore */ }\n state.systemPromptDebounceId = null;\n }, 300);\n}\n\n/**\n * Record current preset selection before user changes it (for cancel/revert)\n * @param {Object} state - The Alpine.js state object\n */\nexport function onPresetSelectFocus(state) {\n try { state.lastChatPromptId = state.chatPromptId; } catch (_) { /* ignore */ }\n}\n\n",[],[182,464],"3473977a-a432-11f0-ac57-0224a6c84d84","presets.js","cc2097b6-8129-11f0-810c-0224a6c84d84",230,["D",1759919598367],4,"// Presets and per-chat settings helpers for chatterApp\n// Each function receives `ctx` which is the Alpine data object (this)\n\nexport async function isChatLinkedToPreset(ctx) {\n try {\n if (!ctx.currentChatId || !ctx.db) return false;\n // sessions do not store preset linkage at chat-level; treat as not linked\n if (ctx.db.sessions) return false;\n const meta = await ctx.db.chats.get(ctx.currentChatId);\n // Consider chat linked if it has a preset id and the active source is preset (or legacy: no explicit active source and no custom settings)\n const active = meta?.activeSettingsSource || null;\n if (meta?.systemPromptId != null && (active === 'preset' || (active == null && !meta?.settings))) {\n const preset = await ctx.db.systemPrompts.get(Number(meta.systemPromptId));\n return !!preset;\n }\n return false;\n } catch (_) { return false; }\n}\n\nexport async function chatHasCustomSettings(ctx) {\n try {\n if (!ctx.currentChatId || !ctx.db) return false;\n if (ctx.db.sessions) return false;\n const meta = await ctx.db.chats.get(ctx.currentChatId);\n return !!(meta?.settings);\n } catch (_) { return false; }\n}\n\nexport async function updatePresetLinkingStatus(ctx) {\n try {\n ctx.chatIsLinkedToPreset = await isChatLinkedToPreset(ctx);\n ctx.chatHasCustomSettingsStored = await chatHasCustomSettings(ctx);\n } catch (_) {\n ctx.chatIsLinkedToPreset = false;\n ctx.chatHasCustomSettingsStored = false;\n }\n}\n\nexport function snapshotCurrentChatSettings(ctx) {\n try {\n return {\n selectedModel: ctx.selectedModel,\n customChatBaseUrl: ctx.customChatBaseUrl,\n temperature: Number(ctx.temperature),\n maxTokens: Number(ctx.maxTokens),\n reasoningEffort: ctx.reasoningEffort,\n streamEnabled: !!ctx.streamEnabled,\n jsonMode: !!ctx.jsonMode,\n useBrowserSearch: !!ctx.useBrowserSearch,\n useCodeInterpreter: !!ctx.useCodeInterpreter,\n };\n } catch (_) {\n return {};\n }\n}\n\nexport function applyPresetSettings(ctx, settings) {\n try {\n if (!settings || typeof settings !== 'object') return;\n if (settings.selectedModel != null) ctx.selectedModel = settings.selectedModel;\n if (settings.customChatBaseUrl != null) ctx.customChatBaseUrl = settings.customChatBaseUrl;\n if (settings.temperature != null) ctx.temperature = Math.max(0, Math.min(2, Number(settings.temperature)));\n if (settings.maxTokens != null) ctx.maxTokens = Math.max(1, Number(settings.maxTokens));\n if (settings.reasoningEffort) ctx.reasoningEffort = settings.reasoningEffort;\n if (settings.streamEnabled != null) ctx.streamEnabled = !!settings.streamEnabled;\n if (settings.jsonMode != null) ctx.jsonMode = !!settings.jsonMode;\n if (settings.useBrowserSearch != null) ctx.useBrowserSearch = !!settings.useBrowserSearch;\n if (settings.useCodeInterpreter != null) ctx.useCodeInterpreter = !!settings.useCodeInterpreter;\n } catch (_) { /* ignore */ }\n}\n\nexport async function saveCurrentChatSettings(ctx) {\n // In sessions-only mode, just keep these on UI state; session snapshots persist on saveSession\n console.log('🔧 saveCurrentChatSettings: starting...');\n if (ctx.savingSettings) return false;\n ctx.savingSettings = true;\n try {\n if (!ctx.db) return false;\n const settings = snapshotCurrentChatSettings(ctx);\n // Update UI flags\n ctx.chatPromptId = ctx.chatPromptId; // no-op retain\n ctx.settingsChanged = false;\n // For sessions, queue a session save (settings snapshot is saved in saveSession if wired); leave legacy path intact\n if (ctx.db.sessions) {\n try { ctx.debouncedSaveSession && ctx.debouncedSaveSession(); } catch (_) {}\n return true;\n }\n // Legacy chats path kept for compatibility\n const updateData = {\n settings,\n customPromptText: typeof ctx.chatPromptText === 'string' ? ctx.chatPromptText : '',\n activeSettingsSource: 'custom'\n };\n if (!ctx._chatWriteQueue) ctx._chatWriteQueue = Promise.resolve();\n let chatId = ctx.currentChatId;\n let savedId = chatId;\n const updateDataCopy = JSON.parse(JSON.stringify(updateData));\n const run = async () => {\n if (!chatId) {\n const base = (ctx.chatInput && ctx.chatInput.trim()) || 'New chat';\n const title = base.substring(0, 60);\n const slug = ctx.slugifyTitle ? ctx.slugifyTitle(title) : '';\n const createdAt = Date.now();\n const row = { title, slug, createdAt, ...updateDataCopy };\n savedId = await ctx.db.chats.put(row);\n } else {\n await ctx.db.transaction('rw', ctx.db.chats, async () => {\n const meta = await ctx.db.chats.get(chatId);\n if (!meta) return;\n const next = { ...meta, ...updateDataCopy };\n await ctx.db.chats.put(next);\n });\n }\n };\n ctx._chatWriteQueue = ctx._chatWriteQueue.then(run).catch(() => {}).then(() => undefined);\n await ctx._chatWriteQueue;\n if (!ctx.currentChatId && savedId) {\n ctx.currentChatId = savedId;\n ctx.activeSearchId = savedId;\n setTimeout(() => { try { ctx.loadChats(); } catch (_) {} }, 0);\n try { if (typeof ctx.navigateToChatPath === 'function') ctx.navigateToChatPath(savedId); } catch (_) { /* ignore */ }\n } else {\n setTimeout(() => { try { ctx.loadChats(); } catch (_) {} }, 0);\n }\n try { await updatePresetLinkingStatus(ctx); } catch (_) { /* ignore */ }\n return true;\n } catch (error) {\n return false;\n } finally {\n ctx.savingSettings = false;\n }\n}\n\nexport async function loadPresets(ctx) {\n try {\n if (!ctx.db) { ctx.presets = []; return; }\n const rows = await ctx.db.systemPrompts.orderBy('updatedAt').reverse().toArray();\n ctx.presets = Array.isArray(rows) ? rows : [];\n } catch (_) { ctx.presets = []; }\n}\n\nexport async function generatePresetShortId(ctx) {\n const alphabet = '23456789ABCDEFGHJKLMNPQRSTUVWXYZabcdefghijkmnopqrstuvwxyz';\n const make = () => Array.from({ length: 6 }, () => alphabet[Math.floor(Math.random() * alphabet.length)]).join('');\n try {\n const existing = await (ctx.db ? ctx.db.systemPrompts.toArray() : Promise.resolve([]));\n const set = new Set((existing || []).map(p => String(p.shortId || '')));\n for (let i = 0; i < 20; i++) {\n const id = make();\n if (!set.has(id)) return id;\n }\n return (Date.now().toString(36) + Math.random().toString(36).slice(2, 6)).slice(0, 8);\n } catch (_) {\n return (Date.now().toString(36) + Math.random().toString(36).slice(2, 6)).slice(0, 8);\n }\n}\n\nexport async function createPreset(ctx, name, systemPrompt, settings) {\n try {\n if (!ctx.db) return null;\n const now = Date.now();\n const shortId = await generatePresetShortId(ctx);\n const sp = String(systemPrompt || '');\n const row = {\n name: (name || 'Preset'),\n systemPrompt: sp,\n content: sp,\n settings: (settings && typeof settings === 'object') ? settings : undefined,\n shortId,\n createdAt: now,\n updatedAt: now\n };\n const id = await ctx.db.systemPrompts.add(row);\n await loadPresets(ctx);\n try {\n if (typeof window !== 'undefined' && window.dispatchEvent) {\n const event = new CustomEvent('presets-updated', { detail: { id, action: 'create' } });\n window.dispatchEvent(event);\n }\n } catch (_) { /* ignore */ }\n return id;\n } catch (_) { return null; }\n}\n\nexport async function updatePreset(ctx, id, fields) {\n try {\n if (!ctx.db || !id) return false;\n const prev = await ctx.db.systemPrompts.get(id);\n if (!prev) return false;\n const patch = { ...fields };\n if (Object.prototype.hasOwnProperty.call(fields || {}, 'systemPrompt')) {\n patch.content = String(fields.systemPrompt || '');\n }\n const next = { ...prev, ...patch, updatedAt: Date.now() };\n await ctx.db.systemPrompts.put(next);\n await loadPresets(ctx);\n try {\n if (typeof window !== 'undefined' && window.dispatchEvent) {\n const event = new CustomEvent('presets-updated', { detail: { id } });\n window.dispatchEvent(event);\n }\n } catch (_) { /* ignore */ }\n return true;\n } catch (_) { return false; }\n}\n\nexport async function deletePreset(ctx, id) {\n try {\n if (!ctx.db || !id) return false;\n // In sessions mode, there is no chat linkage to update; legacy path retained for fallback\n try {\n if (!ctx.db.sessions) {\n const linkedChats = await ctx.db.chats.where('systemPromptId').equals(id).toArray();\n for (const chat of linkedChats) {\n await ctx.db.chats.update(chat.id, { systemPromptId: null });\n }\n }\n } catch (_) { /* ignore */ }\n await ctx.db.systemPrompts.delete(id);\n await loadPresets(ctx);\n if (ctx.chatPromptId === id) {\n ctx.chatPromptId = null;\n await updatePresetLinkingStatus(ctx);\n }\n return true;\n } catch (_) { return false; }\n}\n\nexport function onPresetSelectFocus(ctx) {\n try { ctx.lastChatPromptId = ctx.chatPromptId; } catch (_) { /* ignore */ }\n}\n\nexport async function onPresetChange(ctx) {\n try {\n const raw = ctx.chatPromptId;\n const nextId = (raw == null || raw === '' || raw === 'null') ? null : Number(raw);\n try { await updatePresetLinkingStatus(ctx); } catch (_) { /* ignore */ }\n await doApplyPresetChange(ctx, nextId);\n } catch (_) { /* ignore */ }\n}\n\nexport async function doApplyPresetChange(ctx, id) {\n try {\n // Sessions mode: just update UI state and queue save\n if (ctx.db && ctx.db.sessions) {\n if (id == null || !Number.isFinite(id)) {\n ctx.chatPromptId = null;\n ctx.settingsChanged = false;\n try { ctx.debouncedSaveSession && ctx.debouncedSaveSession(); } catch (_) {}\n return;\n }\n const preset = await (ctx.db ? ctx.db.systemPrompts.get(Number(id)) : null);\n const text = (preset && typeof (preset.systemPrompt != null ? preset.systemPrompt : preset.content) === 'string') ? (preset.systemPrompt != null ? preset.systemPrompt : preset.content) : '';\n ctx.chatPromptId = String(id);\n ctx.chatPromptText = text;\n if (preset && preset.settings) applyPresetSettings(ctx, preset.settings);\n try { ctx.debouncedSaveSession && ctx.debouncedSaveSession(); } catch (_) {}\n ctx.settingsChanged = false;\n ctx.lastChatPromptId = String(id);\n return;\n }\n // Legacy path\n const chatId = await ctx.ensureChatExistsForEditsForce();\n if (id == null || !Number.isFinite(id)) {\n ctx.chatPromptId = null;\n if (chatId && ctx.db) {\n const meta = await ctx.db.chats.get(chatId);\n const customText = meta?.customPromptText || meta?.systemPromptText || '';\n const customSettings = meta?.settings || null;\n if (customSettings) applyPresetSettings(ctx, customSettings);\n ctx.chatPromptText = customText;\n await ctx.db.chats.update(chatId, { activeSettingsSource: 'custom' });\n }\n ctx.settingsChanged = false;\n await updatePresetLinkingStatus(ctx);\n ctx.lastChatPromptId = null;\n return;\n }\n const preset = await (ctx.db ? ctx.db.systemPrompts.get(Number(id)) : null);\n const text = (preset && typeof (preset.systemPrompt != null ? preset.systemPrompt : preset.content) === 'string') ? (preset.systemPrompt != null ? preset.systemPrompt : preset.content) : '';\n ctx.chatPromptId = String(id);\n ctx.chatPromptText = text;\n if (preset && preset.settings) applyPresetSettings(ctx, preset.settings);\n if (chatId && ctx.db) {\n await ctx.db.transaction('rw', ctx.db.chats, async () => {\n const meta = await ctx.db.chats.get(chatId);\n if (!meta) return;\n const next = { ...meta, systemPromptId: id, systemPromptText: text, activeSettingsSource: 'preset' };\n await ctx.db.chats.put(next);\n });\n try { if (typeof ctx.navigateToChatPath === 'function') ctx.navigateToChatPath(chatId); } catch (_) { /* ignore */ }\n }\n ctx.settingsChanged = false;\n await updatePresetLinkingStatus(ctx);\n ctx.lastChatPromptId = String(id);\n } catch (_) { /* ignore */ }\n}\n\nexport function confirmPresetChange(ctx) {\n try {\n const id = ctx.pendingPresetId;\n ctx.showPresetChangeConfirm = false;\n ctx.pendingPresetId = null;\n doApplyPresetChange(ctx, id);\n } catch (_) { /* ignore */ }\n}\n\nexport function cancelPresetChange(ctx) {\n try {\n ctx.showPresetChangeConfirm = false;\n ctx.pendingPresetId = null;\n ctx.chatPromptId = ctx.lastChatPromptId ?? null;\n } catch (_) { /* ignore */ }\n}\n\nexport function onChatPromptTextInput(ctx, e) {\n try { const el = e && e.target; if (el) ctx.autoResize({ target: el }); } catch (_) { /* ignore */ }\n ctx.settingsChanged = true;\n}\n\nexport async function resetChatPromptToPreset(ctx) {\n try {\n const id = ctx.chatPromptId;\n if (!id || !Number.isFinite(Number(id))) return;\n const preset = await (ctx.db ? ctx.db.systemPrompts.get(Number(id)) : null);\n const text = (preset && typeof (preset.systemPrompt != null ? preset.systemPrompt : preset.content) === 'string') ? (preset.systemPrompt != null ? preset.systemPrompt : preset.content) : '';\n ctx.chatPromptText = text;\n if (preset && preset.settings) applyPresetSettings(ctx, preset.settings);\n if (ctx.db && ctx.db.sessions) { try { ctx.debouncedSaveSession && ctx.debouncedSaveSession(); } catch (_) {} return; }\n const chatId = await ctx.ensureChatExistsForEdits();\n if (chatId && ctx.db) { try { await ctx.db.chats.update(chatId, { systemPromptText: text, activeSettingsSource: 'preset' }); } catch (_) { /* ignore */ } }\n } catch (_) { /* ignore */ }\n}\n\nexport async function saveCurrentSettingsToChat(ctx) {\n try {\n if (ctx.db && ctx.db.sessions) { try { ctx.debouncedSaveSession && ctx.debouncedSaveSession(); } catch (_) {} return true; }\n const chatId = await ctx.ensureChatExistsForEdits();\n if (!chatId || !ctx.db) return false;\n const settings = snapshotCurrentChatSettings(ctx);\n const text = typeof ctx.chatPromptText === 'string' ? ctx.chatPromptText : '';\n await ctx.db.chats.update(chatId, { settings, customPromptText: text, activeSettingsSource: 'custom' });\n ctx.chatPromptId = null;\n await updatePresetLinkingStatus(ctx);\n return true;\n } catch (_) { return false; }\n}\n\nexport async function updateCurrentPresetFromChat(ctx) {\n try {\n const id = ctx.chatPromptId;\n if (!id || !Number.isFinite(Number(id))) return false;\n const text = typeof ctx.chatPromptText === 'string' ? ctx.chatPromptText : '';\n const ok = await updatePreset(ctx, Number(id), { systemPrompt: text, settings: snapshotCurrentChatSettings(ctx) });\n return ok;\n } catch (_) { return false; }\n}\n\nexport async function saveAsPresetFromChat(ctx, name) {\n try {\n const text = typeof ctx.chatPromptText === 'string' ? ctx.chatPromptText : '';\n const defaultName = name && String(name).trim() ? String(name).trim() : ('Preset ' + new Date().toLocaleString());\n const id = await createPreset(ctx, defaultName, text, snapshotCurrentChatSettings(ctx));\n if (!id) return null;\n ctx.chatPromptId = String(id);\n if (ctx.db && ctx.db.sessions) { try { ctx.debouncedSaveSession && ctx.debouncedSaveSession(); } catch (_) {} return id; }\n const chatId = await ctx.ensureChatExistsForEditsForce();\n if (chatId && ctx.db) {\n await ctx.db.transaction('rw', ctx.db.chats, async () => {\n const meta = await ctx.db.chats.get(chatId);\n if (!meta) return;\n const next = { ...meta, systemPromptId: id, systemPromptText: text, activeSettingsSource: 'preset' };\n await ctx.db.chats.put(next);\n });\n }\n ctx.settingsChanged = false;\n try { await updatePresetLinkingStatus(ctx); } catch (_) { /* ignore */ }\n return id;\n } catch (_) { return null; }\n}\n\nexport function startEditingPreset(ctx, preset) {\n try {\n const id = preset && preset.id != null ? preset.id : null;\n if (id == null) return;\n ctx.editingPresetId = id;\n ctx.editingPresetName = String(preset.name || 'Preset');\n ctx.editingPresetContent = String(preset.content || '');\n ctx.editingPresetSettings = (preset && preset.settings && typeof preset.settings === 'object') ? JSON.parse(JSON.stringify(preset.settings)) : {};\n } catch (_) { /* ignore */ }\n}\n\nexport function cancelEditingPreset(ctx) {\n ctx.editingPresetId = null;\n ctx.editingPresetName = '';\n ctx.editingPresetContent = '';\n ctx.editingPresetSettings = {};\n}\n\nexport async function commitEditingPreset(ctx) {\n try {\n const id = ctx.editingPresetId;\n if (!id || !Number.isFinite(Number(id))) { cancelEditingPreset(ctx); return false; }\n const name = (ctx.editingPresetName || '').trim() || 'Preset';\n const content = String(ctx.editingPresetContent || '');\n const ok = await updatePreset(ctx, Number(id), { name, content, settings: (ctx.editingPresetSettings && typeof ctx.editingPresetSettings === 'object') ? ctx.editingPresetSettings : undefined });\n cancelEditingPreset(ctx);\n return ok;\n } catch (_) {\n cancelEditingPreset(ctx);\n return false;\n }\n}\n\nexport async function clonePreset(ctx, preset) {\n try {\n if (!preset) return null;\n const name = String(preset.name || 'Preset') + ' (copy)';\n const id = await createPreset(ctx, name, String(preset.content || ''), (preset && preset.settings) ? preset.settings : undefined);\n try { await loadPresets(ctx); } catch (_) { /* ignore */ }\n return id;\n } catch (_) { return null; }\n}\n\n\n",[],[182,472],"b5fd1e3e-8906-11f0-b8db-0224a6c84d84","preferences.js","b5fd1efc-8906-11f0-b8db-0224a6c84d84",176,["D",1756932236447],"// Preferences and settings change handlers extracted from chatterApp.js\n\nexport function onModelChange(ctx) {\n try { localStorage.setItem('groq_model', ctx.selectedModel || 'openai/gpt-oss-120b'); } catch (_) { /* ignore */ }\n const isOss = !!(ctx.selectedModel && ctx.selectedModel.startsWith('openai/gpt-oss'));\n if (!isOss) { ctx.useBrowserSearch = false; ctx.useCodeInterpreter = false; }\n ctx.settingsChanged = true;\n if (ctx.selectedModel === 'custom') {\n try {\n ctx.$nextTick(() => {\n const el = ctx.$refs && ctx.$refs.customBaseUrlInput;\n if (el && typeof el.focus === 'function') el.focus();\n });\n } catch (_) { /* ignore */ }\n }\n}\n\nexport function onUseBrowserSearchChange(ctx) {\n try { localStorage.setItem('use_browser_search', ctx.useBrowserSearch ? '1' : '0'); } catch (_) { /* ignore */ }\n ctx.settingsChanged = true;\n}\n\nexport function onUseCodeInterpreterChange(ctx) {\n try { localStorage.setItem('use_code_interpreter', ctx.useCodeInterpreter ? '1' : '0'); } catch (_) { /* ignore */ }\n ctx.settingsChanged = true;\n}\n\nexport function onAppFontChange(ctx) {\n try { localStorage.setItem('app_font', ctx.appFontChoice); } catch (_) { /* ignore */ }\n ctx.applyAppFont && ctx.applyAppFont();\n}\n\nexport function onThemePreferenceChange(ctx) {\n try { localStorage.setItem('theme', ctx.themePreference || 'auto'); } catch (_) { /* ignore */ }\n try { console.log('[theme] preference ->', ctx.themePreference); } catch (_) { /* ignore */ }\n ctx.applyThemePreference && ctx.applyThemePreference();\n}\n\nexport function onStreamToggle(ctx) {\n try { localStorage.setItem('stream_enabled', ctx.streamEnabled ? '1' : '0'); } catch (_) { /* ignore */ }\n ctx.settingsChanged = true;\n}\n\nexport function onJsonModeToggle(ctx) {\n try { localStorage.setItem('json_mode', ctx.jsonMode ? '1' : '0'); } catch (_) { /* ignore */ }\n ctx.settingsChanged = true;\n}\n\nexport function onCustomChatBaseUrlChange(ctx) {\n try { localStorage.setItem('chat_base_url', ctx.customChatBaseUrl || ''); } catch (_) { /* ignore */ }\n ctx.settingsChanged = true;\n}\n\nexport function onTemperatureChange(ctx) {\n const v = Number(ctx.temperature);\n ctx.temperature = Number.isFinite(v) ? Math.max(0, Math.min(2, v)) : 1;\n try { localStorage.setItem('temperature', String(ctx.temperature)); } catch (_) { /* ignore */ }\n ctx.settingsChanged = true;\n}\n\nexport function onMaxTokensChange(ctx) {\n const v = Math.max(1, Math.floor(Number(ctx.maxTokens) || 0));\n ctx.maxTokens = v;\n try { localStorage.setItem('max_tokens', String(ctx.maxTokens)); } catch (_) { /* ignore */ }\n ctx.settingsChanged = true;\n}\n\nexport function onReasoningChange(ctx) {\n const v = ctx.reasoningEffort;\n const ok = v === 'low' || v === 'medium' || v === 'high';\n if (!ok) ctx.reasoningEffort = 'medium';\n try { localStorage.setItem('reasoning_effort', ctx.reasoningEffort); } catch (_) { /* ignore */ }\n ctx.settingsChanged = true;\n}\n\n\n",[],[182,481],"86984ba2-a434-11f0-9073-0224a6c84d84","notesPlugin.js","86984c4c-a434-11f0-9073-0224a6c84d84",251,["D",1759920595103],"/**\n * Notes Plugin\n * Manages global notes functionality for the Chatter app\n */\n\n/**\n * Load all notes from the database\n * @param {Object} state - The Alpine.js state object\n */\nexport async function loadNotes(state) {\n try {\n if (!state.db) return;\n const rawNotes = await state.db.notes.orderBy('updatedAt').reverse().toArray() || [];\n // Ensure content is always a string\n state.notes = rawNotes.map(note => ({\n ...note,\n content: String(note.content || ''),\n title: String(note.title || '')\n }));\n // Initialize expanded state for all notes (collapsed by default)\n state.notes.forEach(note => {\n if (state.expandedNotes[note.id] === undefined) {\n state.expandedNotes[note.id] = false;\n }\n });\n } catch (error) {\n console.error('Error loading notes:', error);\n state.notes = [];\n }\n}\n\n/**\n * Save a note to the database\n * @param {Object} state - The Alpine.js state object\n * @param {Object} note - The note to save\n * @returns {Promise

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