- Add body.terminal-page-open { overflow: hidden } to prevent page scroll
- TerminalPage adds/removes 'terminal-page-open' class on body when mounted
- Re-add capture-phase touch listeners in terminal.tsx with low 3px threshold
- Call e.preventDefault() immediately when vertical gesture is detected,
before browser compositor commits to page scroll
- Remove CSS touch-action overrides on xterm viewport (now handled in JS)
- Scroll forwarded via term.scrollLines() with 24px per line sensitivity
- Remove all custom touch event interception code from terminal.tsx
- After term.open(), find the internal .xterm-viewport element and set
touchAction=pan-y and overscrollBehavior=contain via inline styles
- Add CSS targeting .xterm-viewport on mobile with touch-action: pan-y,
-webkit-overflow-scrolling: touch, and overflow-y: auto
- Let the browser handle vertical touch panning natively instead of
trying to intercept and manually forward events
- Attach touch listeners to container wrapper in CAPTURE phase so they run
before xterm.js internals stop propagation
- Add e.stopPropagation() in touchmove after handling scroll to prevent
xterm.js from conflicting with our scroll
- Add wheel event fallback for mobile browsers that synthesize wheel from touch
- Remove touch-action: none CSS which was blocking native xterm viewport scroll
- Attach touch listeners to term.element (xterm root) instead of wrapper
- Fix scroll direction: swipe up now scrolls up (shows older buffer)
- Remove RAF indirection; scroll applied synchronously in touchmove
- Accumulate delta between events for smoother scrolling
- Lower threshold to 6px and px-per-line to 16 for better responsiveness
- Add touch-action: none to terminal container on mobile
- Intercepts touch events on the terminal container when isMobile=true
- Detects vertical swipe gestures (dominant over horizontal movement)
- Translates swipe distance to xterm.js scrollLines() calls
- Uses requestAnimationFrame for smooth scroll updates
- Threshold of 10px before scroll kicks in; 30px per line
- Touch listeners cleaned up on component unmount
When switching terminal sessions in fullscreen mode, the viewport
shrank cumulatively because .terminal-wrapper uses
grid-template-rows: auto 1fr. With showControls=false, the single
child (.terminal-container) landed in the auto track instead of 1fr,
creating a feedback loop with xterm fit().
- Add .terminal-wrapper.no-controls with grid-template-rows: 1fr
so the container fills the wrapper when the header is hidden.
- Apply no-controls class in TerminalComponent when showControls=false.
- Replace setTimeout(50) with double requestAnimationFrame in
TerminalPage for more reliable fit() timing after tab switches.
Quality gates: tsc --noEmit (clean), pytest (208 passed, 6 pre-existing)
Frontend:
- Remove 4 console.log statements from terminal.tsx that flooded the
browser console with WebSocket traffic (open, received X bytes, sending Y,
xterm focused)
Backend:
- Downgrade Dockerfile/entrypoint compilation logs from INFO to DEBUG in
_prepare_manifest_instance
- Remove hex-dump diagnostic logging from docker_build.py (was for
troubleshooting the backslash continuation bug, now fixed)
- Downgrade Dockerfile write log from INFO to DEBUG
The instance status may say 'running' but the actual Docker container
may have been removed (e.g. docker prune, host restart). The old code
created a terminal session which immediately died because docker exec
failed with 'No such container'.
- Add get_container_status check in WebSocket handler before session creation
- Return 4004 with clear message if container is missing
- This prevents spawning zombie terminal sessions
- Initialize loading=true in useTerminalSessions to prevent auto-create
from firing before initial load completes
- Remove hasAutoCreated ref from TerminalPage (no longer needed)
- Add focus() to TerminalRef, call on tab switch
- Add term.focus() after term.open() in TerminalComponent
- Add console logging for WebSocket send/receive to debug no-i/o
- Revert backend _read_loop retry logic to original break-on-error
- Add stdin_open: true and tty: true to dockerfile-based compose generation.
Without these, bash (PID 1) exits immediately, causing a container restart
loop that makes the instance invisible to docker ps and triggers 4004.
- Treat WebSocket close codes 4001/4003/4004 as permanent errors in the
frontend. Stop retrying and show the server reason to the user.
- Prevent visibilitychange handler from resetting retry attempts after a
permanent error has occurred.
- Use docker ps -a in get_container_id/get_container_name to find
stopped/exited containers for diagnostics.
Quality gates: tsc --noEmit (pass), pytest (98 passed, 4 pre-existing failures)
The calculateFontSize() function was overriding the font size on mobile
based on viewport width (vw/25), causing the terminal to display at ~15px
while the internal state was 8px. When pressing A-, it would jump from
15px to 7px. Now it respects the actual fontSize state consistently.
Quality gates: TypeScript check passed, production build successful
- Reduce MIN_FONT_SIZE from 8 to 4 for maximum text size reduction
- Set default font size to 8px for both mobile and desktop
- Allows very small terminal text for mobile viewport optimization
Quality gates: TypeScript check passed, production build successful
- Reduce MIN_FONT_SIZE from 12 to 8 for smaller text option
- Reduce default font size from 14/12 to 10/10 for mobile/desktop
- Allows users to make terminal text significantly smaller
Quality gates: TypeScript check passed, production build successful
Mobile devices use different monospace fonts (Courier on iOS, Droid Sans Mono
on Android) with larger ascent/descent metrics than desktop fonts. With
lineHeight: 1.0, calculated cell height was smaller than actual glyph height,
causing block characters to render at ~3/4 height. Increasing to 1.2 gives
mobile fonts proper vertical space while maintaining desktop compatibility.
Quality gates: TypeScript check passed, production build successful
- Remove CSS overrides that interfere with xterm.js internal sizing
- Increase MIN_FONT_SIZE from 10 to 12 to prevent broken character rendering
- Increase default font sizes from 10/12 to 12/14 (desktop/mobile)
- Add clamping for stored font size values to prevent old tiny values
- Remove !important rules on xterm-viewport that could cause clipping
The changeFontSize callback passed to MobileTerminalWrapper was capturing
the initial handleFontSizeChange function, so subsequent clicks used stale
fontSize state. Fixed by wrapping handleFontSizeChange in a ref so the
callback always calls the latest version.
- Reduce MIN_FONT_SIZE from 10 to 6
- Reduce MAX_FONT_SIZE from 24 to 20
- Reduce default desktop font size from 14 to 10
- Reduce default mobile font size from 16 to 12
Mobile Navigation:
- Add MobileNav component with bottom tab bar
- Show mobile nav on small screens, hide desktop sidebar
- Add session count badge to Sessions tab
- Add safe area padding for notched devices
Session Management:
- Redesign SessionCard for mobile with action menu
- Add MobileActionSheet for session actions
- Keep primary action prominent
Forms & Dialogs:
- Stack form fields vertically on mobile
- Ensure 44px minimum touch targets
- Update dialogs for 320px viewport
Responsive Layout:
- Add MobilePageHeader with back button
- Reduce page padding on mobile
- Stack multi-column grids vertically
Touch & Interaction:
- Add active states to interactive elements
- Ensure 8px spacing between touch targets
Complex Pages:
- Update Repo Workspace for mobile
- Update Tool Workshop and Config Profiles
Build: TypeScript check passes, production build succeeds
- Remove chicken-and-egg check that prevented fit() when cols/rows were 0
- Add console logging for container dimensions and fit results
- Add retry limit (50 attempts) for initial fit to prevent infinite loops
- Open terminal before calling fitTerminal() to avoid race conditions
- Add container dimension checks before fitting
- Add guards to prevent fit/refresh with 0x0 dimensions
- Only send resize messages when dimensions are valid
- Prevent xterm.js internal errors from invalid dimension access
Frontend:
- Clear xterm.js screen when receiving 'connected' status after reset
- Send resize message after clearing to ensure proper dimensions
- Fixes terminal artifacts after reset
Backend:
- Fix data loss bug: text starting with '{' but not valid JSON was silently dropped
- Now writes such text to session as regular input
- Fixes missing characters when user types '{'
Frontend:
- Fix term.onData to use wsRef.current instead of captured ws variable
- Fix fitTerminal to use wsRef.current for resize messages
- Fix sendData callback to use wsRef.current
- This fixes 'cannot type' after WebSocket reconnect
Backend:
- Add SessionRef class for mutable session reference
- Update _read_loop and _write_loop to use SessionRef
- Reset now updates session_ref.session instead of returning
- This keeps the WebSocket alive after reset instead of closing it
Backend:
- Remove _stty_sent guard to send stty on EVERY resize
- Use stty -echo to hide command, then delete the command line with ANSI escapes
- Change log level from info to debug
Frontend:
- Add window resize listener as fallback to ResizeObserver
- 250ms debounce to avoid excessive refits
- Proper cleanup on unmount
Reverted terminal.tsx, terminal_session.py, and terminal.py to clean state
from before the resize debugging saga. Removed:
- Debug console.log statements
- Explicit term.resize() calls that broke xterm.js
- position: relative CSS overrides on .xterm
- stty -echo wrapper and asyncio.sleep delay
- Extra requestAnimationFrame refresh calls
Kept:
- Mobile terminal features (special keys, modifiers, font size)
- ResizeObserver for container resize detection
- Basic fit() and WebSocket resize messaging
- Add window resize listener as fallback for ResizeObserver
- Use 250ms debounce to avoid early layout reads
- Delay term.refresh() to next animation frame so renderer
can process resize before we force redraw
- Clean up window resize listener on unmount
- Add window resize listener to complement ResizeObserver
- Clear window resize timeout on cleanup
- Force term.refresh() after font size changes
- Send resize message after font size change
- Frontend: Add ResizeObserver with dimension tracking for accurate resize detection
- Frontend: Fix cleanup function to properly disconnect ResizeObserver
- Frontend: Use CSS grid for terminal wrapper layout
- Backend: Add duplicate dimension check to avoid unnecessary resizes
- Backend: Ensure stty command is sent correctly to container shell
Issues fixed:
1. Terminal container now has explicit width: 100% and height: 100%
2. Added term.refresh() after fit() to force redraw when dimensions change
3. Changed shell-body from min-height to height for definite sizing
4. Added .xterm-viewport width: 100% to ensure proper filling
This ensures the terminal properly fills the viewport and redraws
content when the window is resized.
When window resize fires, CSS layout hasn't settled yet. Adding
requestAnimationFrame ensures the browser has calculated new sizes
before xterm.js fit() reads the container dimensions. Reduced
debounce from 250ms to 100ms since rAF handles the layout timing.
The ResizeObserver detected size changes caused by the stty command
output appearing in the terminal, creating an infinite resize loop:
1. Resize detected -> fit() -> send resize to backend
2. Backend sends stty command through PTY
3. stty text appears in terminal output
4. ResizeObserver detects content height change
5. fit() calculates new rows -> send resize
6. Loop continues forever
Reverted to:
- Window resize event instead of ResizeObserver
- stty command only sent once on first resize
This means the container shell stays at the initial size and won't
dynamically resize when the browser window changes, but prevents
the infinite loop.
Window resize events fire before CSS layout settles, so FitAddon
was reading stale container dimensions. ResizeObserver fires after
the element actually changes size, ensuring fit() gets correct
dimensions. Reduced debounce from 250ms to 100ms for snappier response.
- Backend PTY starts with default 80x24 dimensions
- Previous code only sent resize during layout changes
- Now sends current terminal size immediately when WebSocket opens
- Ensures PTY is properly sized before shell starts rendering
- Simplified fit logic: just fit after open, after fonts load, and on resize
- Added console logging to debug what FitAddon calculates
- Single fitTerminal() function used everywhere
- Removed complex retry logic that wasn't working
- Wait for document.fonts.ready before fitting (ensures correct cell metrics)
- Retry fit every 100ms if rows <= 1 or cols <= 10 (layout still settling)
- Up to 30 retries (3 seconds) for layout to stabilize
- Remove redundant delayed fits, keep only header auto-hide fit at 4s
Alex Blank
alex