odysseus/static/js/MODULE_SUMMARY.md

Frontend Module Organization Summary

Scope: This document describes the architecture of the Odysseus no-build frontend. The app is a collection of native ES6 modules loaded from static/. The authoritative source is the current static/js/ tree and the top-level orchestrator static/app.js.

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1. Top-level Application Orchestrator

static/app.js

Main application entry point.

• Imports all feature modules.
• Exposes a few modules on window for legacy inter-module reachability (themeModule, sessionModule, uiModule, adminModule, cookbookModule).
• Patches fetch so any 401 redirects the user to /login.
• Fetches the default chat configuration and handles deep-link route openers (/notes, /calendar, /email, /memory, /gallery, /cookbook, /library, /tasks).
• Wires global event listeners: chat-history scrolling, popups, Escape handling, drag-and-drop/paste attachment handling, transcription export, sidebar toggles, rail/tool buttons, and session sorting.
• Loads auth status and applies per-user privilege restrictions.

static/index.html

SPA shell. Loads app.js as a module, includes the theme-aware inline script, and defines the DOM skeleton that the modules populate (chat history, composer, sidebar, icon rail, modals).

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2. Core Foundation Modules

These are imported first and used across most features.

Module	Primary Exports	Responsibility
ui.js	showToast, showError, el, copyToClipboard, scrollHistory, setAutoScroll, autoResize, debounce, esc	Shared UI helpers, toast notifications, scroll behavior, element accessor, text escaping.
storage.js	default storage wrapper	LocalStorage helpers and toggle state persistence.
markdown.js	mdToHtml, processWithThinking, squashOutsideCode, normalizeThinkingMarkup, extractThinkingBlocks, hasUnclosedThinkTag, startsWithReasoningPrefix	Markdown→HTML, thinking/reasoning block parsing, code-block normalization.
spinner.js	create, createWhirlpool	Loading/spinner factories for streaming and tool cards.
keyboard-shortcuts.js	initKeyboardShortcuts	Global keyboard shortcut wiring.
sidebar-layout.js	initSidebarLayout, syncRailSide	Wide sidebar ↔ icon-rail layout behavior.
section-management.js	initSectionCollapse, initSectionDrag	Collapsible/draggable sidebar sections.
modalManager.js	side-effect import	Unified minimize/restore behavior for floating tool modals.
tileManager.js	side-effect import	Desktop window tiling and snap-to-edge behavior.
windowDrag.js	makeWindowDraggable	Drag support for floating panels.
modalSnap.js, toolWindowZOrder.js, windowResize.js	—	Modal snapping, z-index management, resize handles.

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3. Chat Pipeline

The largest and most central subsystem. Chat submission → backend SSE → progressive rendering of text, tools, research, documents, and UI events.

Module	Responsibility
chat.js	Main chat controller. Handles handleChatSubmit, stops/continues, builds FormData, posts to /api/chat_stream, reads the SSE stream, and dispatches each JSON event to the appropriate renderer. Tracks background streams, stalls, auto-recovery, and multi-round agent state.
chatStream.js	Helpers shared between streaming consumers: browser notifications, background-stream completion toasts, and ui_control event handling.
chatRenderer.js	Message DOM construction: addMessage, role labels, model route labels, color coding, footers, metrics, code blocks, sources boxes (web/research/RAG), findings box, images, report links, ask-user cards, welcome screen, and transcript utilities.
streamingRenderer.js	Incremental streaming renderer used by chat.js. Freezes finalized DOM blocks and only re-renders the growing tail to avoid flicker and O(N²) re-parsing.
streamingSegmenter.js	Splits a token stream into display units (text vs code fences) for streamingRenderer.js.
liveThinkingThrottle.js	Trailing-edge coalescer for the live thinking block in chat.js: one DOM commit per 100 ms carrying the latest reasoning text, with flush/cancel for terminal and session-switch paths.
slashCommands.js	Slash-command registry (/help, /setup, etc.), parsing, and dispatch handlers. Exported functions are consumed by chat.js and slashAutocomplete.js.
slashAutocomplete.js	Composer autocomplete popup for / commands.
composerArrowUpRecall.js	Recall last user message with ↑ on an empty composer.
assistant.js	Assistant/persona behaviors and message styling helpers.
tts-ai.js	AI text-to-speech manager, enqueueing, streaming TTS, and playback button injection.
voiceRecorder.js	Voice recording from the composer microphone.
fileHandler.js	Attachment picker, paste/drop handling, upload, attachment strip rendering, pending-file management.
codeRunner.js	Client-side execution affordances for code blocks returned by the model.

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4. Model, Endpoint, and Configuration Modules

Module	Responsibility
models.js	Model discovery / scanning, local model port probing, provider management, model selection UI state.
modelPicker.js	Composer model-picker dropdown and endpoint selection.
modelSort.js	Sorting helpers for model lists.
model/matchKey.js	Model-to-key matching helper.
providers.js	Provider metadata and account-management helpers.
providerDeviceFlow.js	OAuth device-flow support for providers.
presets.js	Character/preset selection, custom preset saving, inject prefix/suffix handling.
search.js	Web-search settings, provider selection, API key management.
settings.js	Settings panel (models, search, appearance, users, MCP, RAG, embedding, tokens).
admin.js	Admin panel and privileged user/endpoint configuration.
theme.js	Theme presets, custom colors, fonts, backgrounds, live theme switching.

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5. Session, Sidebar, and Workspace

Module	Responsibility
sessions.js	Chat session list loading, creation, switching, renaming, archiving, library modal, and direct-chat creation. Tracks current session, streaming/research indicators in the sidebar.
workspace.js	Workspace folder path management for shell/file tool confinement.
search-chat.js	In-chat history search.
skills.js	Client-side skill library UI (load, edit, delete, test, and audit status display).

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6. Knowledge, Memory, and RAG

Module	Responsibility
memory.js	AI memory CRUD, search/filter UI, memory extraction, count badge.
rag.js	Personal document RAG: load documents, add directories/files, show included paths.
group.js	Group-chat UI and model orchestration.

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7. Document and Editor Subsystems

Module	Responsibility
document.js	Tabbed document editor, AI edit suggestions, Markdown/HTML/CSV editing, document streaming (streamDocOpen/streamDocDelta), and panel state.
documentLibrary.js	Document library modal.
editor/	Gallery image editor canvas modules: layers, brush, inpaint, crop, filters, state, history panel, top-bar wiring, canvas coordinate helpers, and AI model runners for inpainting/background-removal.

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8. Research UI

Module	Responsibility
research/panel.js	Research panel UI, job list, and controls.
research/jobs.js	Research job polling and status rendering.
researchSynapse.js	Animated research-progress visualization shown inside the chat bubble during a research run.

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9. Gallery, Email, Calendar, Tasks, and Notes

Module	Responsibility
gallery.js / galleryEditor.js	Gallery/image library and canvas editor entry points.
emailInbox.js / emailLibrary/	Email inbox reader and library modal. emailLibrary.js is a re-export wrapper; emailLibrary/index.js owns the panel, list and cards, with settingsPage.js, unsubscribe.js, reader.js, menus.js, bodyRender.js, attachments.js and aiReply.js alongside it plus the utils.js / signatureFold.js / replyRecipients.js / state.js leaves.
calendar.js / calendar/utils.js / calendar/reminders.js	Calendar views, event forms, reminders.
tasks.js	Scheduled task/recurring LLM job UI.
notes.js	Notes and todo panel, reminders, pinboard.

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10. Cookbook (Model Serving)

Module	Responsibility
cookbook.js	Cookbook main UI: hardware fitting, presets, action panels.
cookbook-hwfit.js / cookbook-diagnosis.js / cookbook-deps-recipes.js	Hardware-fit scoring, dependency diagnosis, recipe handling.
cookbookDownload.js / cookbookServe.js / cookbookRunning.js / cookbookSchedule.js / cookbookPorts.js / cookbookProgressSignal.js	Model download/serve flow, running job cards, scheduling, port detection, and progress computation.

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11. Compare and Utility Modules

Module	Responsibility
compare/index.js (with compare/state.js, compare/stream.js, compare/panes.js, compare/selector.js, compare/scoreboard.js, compare/probe.js, compare/vote.js, compare/icons.js)	Model compare mode: parallel streams, panes, scoring, vote UI.
censor.js	Text/image censor overlay toggles.
a11y.js	Accessibility helpers.
platform.js	Platform detection (macOS/Windows/Linux) and keyboard-modifier helpers.
escMenuStack.js	Stack manager for dismissible popups.
dragSort.js	Drag-to-sort shared behavior.
tourHints.js / tourAutoplay.js	Onboarding tour helpers.
color/hex.js, colorPicker.js, langIcons.js, util/ordinal.js	Small utility modules for color, language icons, and formatting.

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12. Frontend Event Streaming Flow

User submits composer
  └── chat.js::handleChatSubmit() builds FormData
        ├── fileHandler.uploadPending() for attachments
        ├── document.js saved (if a document panel is open)
        └── POST /api/chat_stream

Server responds with SSE stream
  └── chat.js reads chunks via res.body.getReader() + TextDecoder
        ├── Lines starting with "event:" set next-error state
        └── Lines starting with "data:" carry JSON payloads

JSON events are dispatched by "type":
  delta              → streamingRenderer → markdown → live reply text
  agent_prep         → update spinner label
  tool_start         → finalize text bubble; create agent-thread node with wave animation
  tool_progress      → append/update live stdout/stderr tail
  tool_output        → mark node done/failed, render output, diffs, screenshots
  agent_step         → finalize tool thread; create new msg-continuation bubble
  doc_stream_open    → document.js opens a live document
  doc_stream_delta   → document.js appends content to that document
  research_progress  → researchSynapse visualization + spinner timer
  research_sources   → build sources box for research
  research_done      → reload session history to show the report
  web_sources        → build web-search sources box
  model_info         → update role header with requested/actual model
  fallback           → show fallback model toast + update role label
  metrics            → collect/display token/cost metrics
  message_saved      → store database id on the message element
  budget_exceeded    → show budget banner
  rounds_exhausted   → show Continue button for step-limit hits
  teacher_takeover   → insert escalation banner, reset round state
  skill_saved        → show skill-learned banner

Foreground vs background streams:

• If the user switches sessions while a stream is running, chat.js pauses DOM updates and stores the state in _backgroundStreams. Completion is signaled with a sidebar dot/notifications, and the history is reloaded when the user returns.

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13. What Changed from the Previous Summary

• The frontend is now exclusively ES6-module based; the old <script> tag load order is no longer authoritative.
• chat.js is the streaming controller, but message rendering has been split into chatRenderer.js, streamingRenderer.js, chatStream.js, and researchSynapse.js.
• New major subsystems added since the original summary: compare mode (compare/), document editor streaming (document.js), research UI (research/), model cookbook (cookbook*.js), group chat (group.js), voice/TTS (voiceRecorder.js, tts-ai.js), skill UI (skills.js), and slash autocomplete (slashAutocomplete.js).
• sessions.js now owns sidebar session state, streaming/research indicators, and the library/archive modals.