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Main document: the app never called Overleaf's official settings endpoint,
so "Set as main document" only changed renderer state and agents had no way
to switch at all — compiles kept using the old root. Now:
- Right-click Set as main and the new set_main_file MCP tool both POST
/project/:id/settings {rootDocId} (web parity, persists project-wide)
- Handle the rootDocUpdated broadcast: update the project snapshot, the
renderer state, and rewrite CLAUDE.md/AGENTS.md — the guide's stale
"Main file" line was teaching agents to compile the old root via
main_file overrides
- Compile root resolution uses the sync bridge's live maps, so docs
created mid-session resolve correctly (agent guide too)
MCP server location: Codex stores its MCP registration globally, and the
per-project path went stale when the project temp dir was cleaned up
("connection closed" on handshake). The bundled server now installs to
~/.lattex/lattex-mcp.mjs (project-independent, refreshed on connect; the
esbuild bundle since the raw source can't resolve node_modules from there)
and resolves the project at runtime: $LATTEX_PROJECT_DIR, cwd + ancestors,
legacy script location, then single live project in tmpdir. Register once,
works for every project.
Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
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On launch the home page checks the latest GitHub release; when a newer
version exists a bottom-right card offers Download (streams the right
installer for the platform into ~/Downloads and opens it), Later, or
Skip this version (remembered). Unsigned app rules out silent
auto-update on macOS, so installation stays a manual replace.
Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
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The project list is now a persistent home tab; each opened project runs
in its own WebContentsView tab below a 38px tab strip (hidden when only
home is open). Background tabs stay fully live (sync, collab, terminals).
Main process: per-project singletons (socket, sync bridge, compilation
manager, MCP state, compile watcher) become per-tab ProjectSession
objects keyed by webContents.id; PTYs are scoped per webContents.
Hardened against races found in review: concurrent ot:connect dedupe,
teardown/reopen serialization on the shared sync dir, destroyed-window
guards on all bridge sends, real logout that closes project tabs.
Renderer: tabs strip in the home renderer (wt-* classes, distinct from
the editor's .tab-bar file tabs), project tabs boot from ?projectId= and
connect straight into the editor; Back closes the tab.
Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
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- Normalize watcher paths to forward slashes (Windows events use
backslashes; all sync maps are '/'-keyed), path.delimiter for
PATH/TEXINPUTS, dirname() instead of '/'-substring splits, bridge log
in os.tmpdir()
- Platform-aware TeX search paths (TeX Live / MiKTeX on Windows),
terminal shell default (COMSPEC/powershell), native window frame off
macOS
- electron-builder: NSIS target + win icon + GitHub publish provider
- GitHub Actions workflow builds the Windows installer on tag push
(node-pty needs MSVC — cannot cross-compile from macOS) and attaches
it to the release
Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
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Workspace browser:
- The left panel gains a Project/Workspace toggle; the Workspace view
browses the agent scratch space (claude-workspace/, never synced)
- Open/edit workspace text files in the editor with debounced auto-save
(flushed on tab switch); binaries open with the system default app
- Import to Project copies a workspace file/folder into the project root
where the sync bridge picks it up and creates it on Overleaf
(collision-safe: falls back to a -imported suffix)
- New file/folder, rename, delete, reveal in Finder, drag-drop into the
workspace, 5s auto-refresh while visible
OpenAlex search (MCP):
- New search_openalex tool: broad OpenAlex coverage with an explicit
citation-authority policy — BibTeX is cross-checked against Semantic
Scholar (by DOI, then by exact title, since OpenAlex DOIs can point at
mirrors); entries not found on S2 are flagged "OpenAlex only" with
instructions to verify via web search before citing
- Tool description, agent guide, permission allowlist, and README updated
Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
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- Write AGENTS.md (the cross-tool agent-instructions standard) at the
project root alongside .claude/CLAUDE.md, generated from one guide;
includes an Agent Setup section with the project-specific Codex MCP
registration command. AGENTS.md is excluded from Overleaf sync.
- MCP server resolves the project directory from its own script location
when cwd doesn't contain the state file, so clients that launch MCP
servers from a global config (Codex) work without special setup
- Terminal: swallow the duplicate compositionend commit when switching
input sources mid-composition (xterm finalizes on the keydown and then
again on compositionend, sending pinyin text twice)
- Don't render our own colored overlay cursor — the native caret already
marks our position; overlay cursors are collaborators-only (web parity)
Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
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Uses the Overleaf open-source code as golden reference throughout.
Project dashboard (official /tag + /project endpoints):
- Sidebar filters (all/yours/shared/archived/trashed) with the web
client's exact filtering predicates
- Tags: create/edit/delete with the official preset palette, per-row
chips, bulk add/remove, uncategorized view
- Archive/trash/restore/delete-forever/leave, rename, copy, zip download,
multi-select bulk actions (parallelized)
Editor:
- Remote cursors rewritten as a layer() overlay ported from Overleaf's
cursor-highlights — no more inline widgets disturbing line wrapping,
cursor motion, or IME composition
- Autocomplete ported from Overleaf's completion system: official
top-hundred snippet data, environment templates, package/class/bib
style data (verbatim, AGPL), project-wide \ref and \cite completion,
package commands via the official /project/:id/metadata endpoint,
brace-aware apply behavior, official keymap precedence
- Fixed completion popup keybindings (Enter/arrows previously fell
through to the default keymap) and dead Enter/Backspace handlers in
latexClosing
File sync reliability:
- Two-tier compile-artifact detection: pure build noise is ignored,
while pdf/docx/gz/bbl sync unless there is concrete local-compile
evidence — agent-generated figure PDFs now sync (previously all PDFs
were blanket-ignored)
- Local compile outputs are registered with the bridge so nested-root
projects don't upload the root PDF as junk
- Upload retry with exponential backoff and permanent-failure parking,
CSRF refresh with session validation and single-flight guard,
periodic orphan rescan, sync status surfaced in the status bar
- Official textExtensions list (plus legacy extras) for doc-vs-file
classification
Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
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The server broadcasts otUpdateApplied (with ops) to ALL clients including
the sender. Our bridge was treating its own echoed ops as remote ops and
re-applying them, causing text duplication (e.g. "simulatorimulator").
Rewrite OT handling to match Overleaf's ShareJS _onMessage pattern:
- ACK = no ops OR meta.source matches our publicId (own echo)
- REMOTE = ops from a different source
- ACK path calls onAck() without re-applying ops
- OtClient silently drops duplicate acks in synchronized state
- OtClient drops stale remote ops (version < current)
- Remove pendingEchos counter in favor of meta.source detection
Also: refresh MCP comment contexts on new-comment/delete-thread events,
add Overleaf reference repo to .gitignore.
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
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Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
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- Settings modal on project list page for OpenAI, Anthropic, OpenRouter, Gemini, Semantic Scholar keys
- Keys stored in userData/api-keys.json, masked by default with show/hide toggle
- S2 API key passed to MCP server via .lattex-mcp.json to avoid rate limits
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
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- read_compiled_pdf: returns PDF path for Claude Code to visually inspect compiled output
- search_citation: search Semantic Scholar for papers, returns ready-to-use BibTeX entries
- Updated CLAUDE.md template with new tool docs, workflows, and permissions
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
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Split "read main.tex and all inputs" into two discrete steps:
1. Read main file to discover \input/\include references
2. Read EVERY referenced file one by one (no skipping, no skimming)
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
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CLAUDE.md
- Online users: click "N online" badge to see user names with cursor colors
- MCP get_online_users tool: main process tracks users in .lattex-online-users.json
- CLAUDE.md: show current user's Overleaf name (fetched from /user/settings)
- CLAUDE.md: mandatory first steps with MUST/NEVER language at top of file
- claude-workspace/ directory: untracked scratch space for Claude Code experiments
- chokidar + bridge skip claude-workspace/ to prevent syncing to Overleaf
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
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- Fix .bib (and other non-active tab) edits disappearing: call otLeaveDoc
on tab switch so bridge takes back OT ownership; release .bib pre-loads
immediately after reading content for citation autocomplete
- Always update lastKnownContent in processDocChange for editor docs to
prevent stale state accumulation
- Flush pending OT ops in OverleafDocSync.destroy() before tab switch
- Add three-way merge in replaceContent to preserve concurrent remote edits
- Wire MCP compile to UI: file-based signal between MCP server and Electron
main process, with compile animation and PDF refresh in renderer
- Add CLSI flush before compile to prevent stale cached results
- Add OT error recovery: re-join doc and re-apply disk changes on otUpdateError
- Add bridge reconnect handling: reset OtClient on docRejoined for non-editor docs
- Add compile concurrency lock to prevent duplicate compiles
- removeEditorDoc compares disk vs server content to catch in-flight ops
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
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Includes main file path, TeX file list, and rules for Claude Code:
read full document before editing, match existing style, compile after
changes, respond to comments properly.
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
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MCP server was not included in DMG builds. Now esbuild bundles it into
a single file (out/mcp/lattex.mjs) with all dependencies inlined, and
electron-builder unpacks it from asar so external node can execute it.
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
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- In-file search: Cmd+F opens CodeMirror search panel with themed styling
- Multi-file search: Cmd+Shift+F or toolbar button opens project-wide search
- PDF text search: Cmd+F on PDF or search button to find text in PDF
- SyncTeX forward search: Cmd+Enter jumps from editor cursor to PDF position
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
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Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
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- synctex.gz CDN returns 503; use Overleaf web proxy URL with session cookie
- Normalize synctex paths (collapse /./ segments)
- Pass session cookie to all compile artifact downloads
- Smooth editor zoom: continuous delta, debounced remeasure
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
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- Exclude CLAUDE.md from sync (move to .claude/ dotfile dir, clean up root copy)
- Add Ctrl+wheel font zoom for editor (capture phase, disable Electron built-in zoom)
- Load cached PDF on project connect (avoid recompile to see last PDF)
- Add synctex debug logging for PDF↔source navigation troubleshooting
- Fix .claude/ dir creation order (mkdir before write)
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
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get_compile_log
New MCP tools for agents to debug LaTeX compilation:
- get_compile_errors: parsed errors with file paths and line numbers
- get_compile_warnings: parsed warnings with locations
- get_compile_log: full raw log with optional tail parameter
- compile_latex: improved to fetch log via CDN URL, return error summary
Log parsing uses the same Overleaf-style parser as the PdfViewer component.
Updated CLAUDE.md template with compile-debug workflow documentation.
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
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Overleaf
The root cause of server compile failures was that output.pdf was being
saved into the synced project directory, causing FileSyncBridge to upload
it back to Overleaf as a project file. CLSI then failed because it found
an existing output.pdf blocking its compilation output.
Changes:
- Save compile artifacts (PDF, synctex.gz) to .build/ subdirectory instead
of the synced project root — .build is a dotfile dir ignored by chokidar
- Add pdf/pdfxref/stderr/stdout/chktex to FileSyncBridge ignore patterns
- Add rootResourcePath to compile request body (matches Overleaf web client)
- Implement PDF download with fallback via direct build ID URL construction
- Add server compile handler, compile dropdown menu, PDF save button
- Fix resolved comment highlight flash on startup (null initial state)
- Fix EPIPE crash on startup when stdout/stderr is closed
- Fix synctex inverse search to use relative paths via OT doc join
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
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- Fix Socket.IO v0.9 ack parser to handle acks without data (6:::N format),
fixing comment creation stuck at "sending"
- Rewrite comment sync to use local state updates from socket events
(new-comment, resolve-thread, reopen-thread, delete-thread, edit-message,
delete-message) instead of REST re-fetches — instant UI updates
- Optimistic updates for all comment actions (resolve, reopen, delete, reply, edit)
- Fetch threads + contexts on project connect so editor highlights are correct
from startup, not only when review panel is opened
- Add comment context to store immediately after creation for instant highlight
- Rename MCP server from overleaf-comments to lattex, add 6 new tools:
reopen_comment, delete_comment, get_chat_messages, send_chat_message,
list_project_files, compile_latex — all auto-granted permissions
- Refactor terminal from fixed Terminal/Claude tabs to dynamic multi-tab with
bottom tab bar and unlimited new terminal creation
- Fix chat panel layout overflow pushing other components
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
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queries
- Add missing PTY environment variables (TERM, COLORTERM, LANG, TERM_PROGRAM)
- Strip DEC 2026 synchronized output sequences that cause xterm.js to buffer
indefinitely when begin/end markers are split across PTY chunks
- Enable xterm.js windowOptions for terminal pixel/char size queries that
Claude Code sends to determine rendering capabilities
- Launch Claude tab via login shell for full PATH inheritance
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
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Root cause: SHA-1 hash sent with applyOtUpdate didn't match Overleaf's
server-side computation, causing "Invalid hash" error, disconnect, and
rollback of all synced changes.
- Remove hash field from applyOtUpdate to skip server-side hash check
- Switch applyOtUpdate from fire-and-forget to emitWithAck for reliable ack
- Fix getOldDoc bug: save base doc when changes start accumulating instead
of incorrectly using current doc (caused wrong delete ops)
- Fix ack handler: only ack when no 'op' field (was acking remote ops too)
- Await fileSyncBridge.start() instead of fire-and-forget
- Add joinDoc retry logic for transient joinLeaveEpoch mismatch errors
- Clear pending ack callbacks on WebSocket close to prevent timeout errors
- Add otUpdateError logging for server-side rejections
- Add file-based bridge logging for debugging sync issues
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
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- Support multiple named pty instances via ID-based IPC channels
- Terminal tab spawns a shell, Claude tab spawns `claude` CLI separately
- Fix pty race condition: old instance's onExit callback could delete
the replacement instance from the Map during React StrictMode re-mount
- Guard against StrictMode double-initialization in TerminalInstance
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
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FileSyncBridge now handles binary fileRefs in addition to text docs:
- Downloads all binary files to temp dir on project connect
- Watches for binary file changes on disk and uploads via REST API
- Listens for Overleaf socket events (reciveNewFile, reciveNewDoc,
removeEntity, reciveEntityRename) to sync remote changes to disk
- Tracks binary files by SHA1 hash to avoid redundant uploads
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
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- Add file upload to Overleaf projects via multipart POST with correct
"name" text field (server reads filename from req.body.name, not from
Content-Disposition filename)
- Add drag-and-drop support in file tree panel with visual feedback
- Replace window.prompt() with custom modal for new project creation
(prompt() returns null in Electron)
- Fix API endpoints: /api/project/new → /project/new
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
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- Terminal now spawns in project sync directory so Claude Code can
read/write .tex files
- Selection highlight uses semi-transparent color to layer above
active line highlight
- External edits use diff-match-patch for minimal changes instead of
full doc replace, preserving comment highlight positions
- Set connection state on project open so status bar shows Connected
- Remove cursor:pointer from comment highlights
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
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- Simplified logo: cosmic latte cup on brown background with turquoise
liquid and sparkle stars
- Square app icon (.icns) for macOS dock
- Fix crash on window close: guard all IPC sends against destroyed window
- Include ws/chokidar/diff-match-patch in packaged app
- Add README with features and install instructions
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
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Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
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- Rename project from ClaudeTeX to LatteX (Cosmic Latte theme pun)
- Add new coffee cup logo and branded welcome/project screens
- Add 5-source LaTeX autocomplete: commands, environments, \ref, \cite, file paths
- Fix comment highlight drift by decoding WebSocket-encoded UTF-8 lines and range
text via decodeURIComponent(escape()), matching Overleaf's client implementation
- Remove hacky byte-offset position remapping from index.ts
- Add pinch-to-zoom on PDF viewer
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
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Collaborator cursors:
- Real-time cursor positions via clientTracking Socket.IO events
- CM6 extension renders colored cursor widgets with name labels
- Throttled cursor position broadcasting (300ms)
- Connected users count in toolbar and status bar
Project chat:
- Chat panel in right sidebar (toggleable)
- Load message history via REST API
- Send messages with real-time delivery via Socket.IO new-chat-message
- Auto-scroll, avatars, timestamps
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
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Implement full Overleaf integration with Socket.IO v0.9 real-time sync:
- FileSyncBridge for bidirectional temp dir ↔ Overleaf sync via chokidar + diff-match-patch
- OT state machine, transform functions, and CM6 adapter for collaborative editing
- Comment system with highlights, tooltips, and review panel
- Project list, file tree management, and socket-based compilation
- 3-layer loop prevention (write guards, content equality, debounce)
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
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Features:
- Electron + React + TypeScript app with Cosmic Latte theme
- CodeMirror 6 editor with LaTeX syntax highlighting
- PDF preview with pdf.js, zoom controls, SyncTeX double-click jump
- File tree with context menu (new/rename/delete/reveal)
- Overleaf Git clone with token auth + macOS Keychain storage
- Git pull/push sync for Overleaf projects
- Embedded terminal (xterm.js + node-pty) with Claude CLI integration
- LaTeX compilation via latexmk with auto package install detection
- Structured compile log (errors/warnings) with click-to-navigate
- Main document setting (auto-detect or right-click to set)
- Custom modal system (input/confirm/alert)
- Resizable panel layout (file tree | editor | PDF + terminal)
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
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