Restore the old-CLI contract where only complete failures tint Activity
red. Everything else is still visible for debugging but no longer
commandeers attention.
- gateway.stderr: always tone='info' (drops the ERRLIKE_RE regex)
- gateway.protocol_error: both pushes demoted to 'info'
- commands.catalog cold-start failure: demoted to 'info'
- approval.request: no longer duplicates the overlay into Activity
Kept as 'error': terminal `error` event, gateway.start_timeout,
gateway-exited, explicit status.update kinds.
Reverts the auto-expand-on-new-error effect added in 93b47d96. The
effect overrode the user's chosen detailsMode and visually interrupted
every turn. Red/yellow chevron tint remains as the passive signal —
click to read, just like Thinking and Tool calls.
After the prior inline-diff fix, the gateway still prepends a literal
" ┊ review diff" line to inline_diff (it's terminal chrome written by
`_emit_inline_diff`). Wrapping that in a ```diff fence left that header
inside the code block. The agent also often narrates its own edit in a
second fenced diff, so the assistant message ended up stacking two
diff blocks for the same change.
- Strip the leading "┊ review diff" header from queued inline diffs
before fencing.
- Skip appending the fenced diff entirely when the assistant already
wrote its own ```diff (or ```patch) fence.
Keeps the single-surface diff UX even when the agent is chatty.
When tool.complete already carries inline_diff, the assistant message owns the full diff block. Suppress the tool-row summary/detail in that case so the turn shows one detailed diff surface instead of a rich diff plus a duplicated tool-detail payload.
Avoid duplicate diff rendering in #13729 flow. We now skip queued inline diffs that are already present in final assistant text and dedupe repeated queued diffs by exact content.
Follow-up for #13729: segment-level system artifacts still looked detached in real flow.\n\nInstead of appending inline_diff as a standalone segment/system row, queue sanitized diffs during tool.complete and append them as a fenced diff block to the assistant completion text on message.complete. This keeps the diff in the same message flow as the assistant response.
Follow-up on multiline arrow behavior: Up/Down now fall back to queue/history whenever there is no logical line above/below the caret (not only at absolute start/end character positions). This makes Up from the end of the top line cycle history, matching expected readline-ish behavior.
Follow-up on #13729 from blitz screenshot feedback.\n\n- When tool.complete carried inline_diff but no buffered assistant text existed, pending tool rows were still in streamPendingTools, so diff rendered above the tool row section. appendSegmentMessage now emits pending tool rows as a trail segment before appending the diff artifact.\n- Strip ANSI color escapes from inline_diff payloads so we don't render loud red/green terminal palettes in the transcript.
Follow-up on #13726 from blitz feedback: Up/Down history cycling should only trigger when the caret is at the start/end boundary (or the input is empty).\n\nPreviously useInputHandlers intercepted arrows whenever inputBuf was empty, which still stole Up/Down from normal multiline editing. textInput now publishes caret position through inputSelectionStore even with no active selection, and useInputHandlers gates history/queue cycling on those boundaries.
Reported during TUI v2 blitz retest: code-review diffs from tool.complete
appeared at the top of the current interaction thread, out of sequence
with the agent's messages and tool rows below them.
Root cause — `sys(inline_diff)` appends to `historyItems`, which sits
above the `StreamingAssistant` pane that renders the active turn.
Until the turn closed, the diff visually floated above everything
else happening in the same turn.
Route the diff through `turnController.appendSegmentMessage` instead
so it flushes any pending streaming text first, then lands in the
segment stream beside assistant output and tool calls. On
`message.complete` the segment list is committed to history in emit
order (diff → final text), matching what the gateway sent.
Adds a regression test that exercises tool.complete → message.complete
with an inline_diff payload and asserts both the streaming and final
placement.
Reported during TUI v2 blitz retest: `/history` in the TUI only shows
prompts from non-TUI Hermes runs and can't scroll the window. Root
cause is the slash-worker subprocess: it's a detached HermesCLI that
never sees the TUI's turns, so its `conversation_history` starts empty
and `show_history` surfaces whatever was persisted from earlier CLI
sessions — not what the user just did inside the TUI.
Intercept `/history` as a local slash command so it dumps
`ctx.local.getHistoryItems()` — the TUI's own transcript — routed
through the pager (which scrolls after #13591). Accepts an optional
preview-length argument (default 400 chars per message).
Adds createSlashHandler coverage.
Reported during TUI v2 blitz retest: typing a multi-line message with
shift-Enter and then pressing Up to edit an earlier line swapped the
whole buffer for the previous history entry instead of moving the
cursor up a line. Down then restored the draft → the buffer appeared
to "flip" between the draft and a prior prompt.
`useInputHandlers` cycles history on Up/Down, but textInput only
checked `inputBuf.length` — that only counts lines committed with a
trailing backslash, not shift-Enter newlines inside `input` itself.
Fix: detect logical lines inside the input string and move the cursor
one line up/down preserving column offset (clamp to line end when the
destination is shorter, standard editor behavior). Only fall through
to history cycling when the cursor is already on the first line (Up)
or last line (Down).
Adds unit coverage for the new `lineNav` helper.
- Drop the outer no-op capture group from INLINE_RE and restructure the
source as an ordered list of patterns-with-index-comments so each
alternative is individually greppable. Shift group indices in MdInline
down by one accordingly.
- Inline single-use helpers (parseFence, isFenceClose, isMarkdownFence,
trimBareUrl) and intermediate variables (path, lang, raw, prefix, body,
depth, task body, setext match, etc.).
- Hoist block-level regexes used inside MdImpl (FENCE_CLOSE_RE, SETEXT_RE,
BULLET_RE, TASK_RE, NUMBERED_RE, QUOTE_RE) to top-level consts so
they're compiled once instead of per-line.
- Collapse the duplicate compact-vs-normal blank-line branches into one
if/!compact gap call.
- Move Fence and MdProps types to the bottom per house style.
- Shorten splitTableRow → splitRow and use optional chaining in a few
match sites.
No behavior change; 162/162 tests pass. Net -22 LoC.
The inline markdown regex had `~([^~\s][^~]*?)~` for Pandoc-style subscript
(H~2~O, CO~2~). On models that decorate prose with kaomoji like `thing ~!`
and `cool ~?` — Kimi especially — the opener `~!` paired with the next
stray `~` on the line and dim-formatted everything between them with a
leading `_` character, mangling markdown output.
Tighten the pattern to short alphanumeric-only content (`~[A-Za-z0-9]{1,8}~`)
since real subscript never contains punctuation, spaces, or long runs.
Same tightening applied to stripInlineMarkup so width measurement stays
consistent. Classic CLI was unaffected because it renders these literally.
Two bugs that allow dangerous commands to execute without informed user consent.
TUI (Ink): useInputHandlers consumes the isBlocked return path, but Ink's
EventEmitter delivers keystrokes to ALL registered useInput listeners. The
ApprovalPrompt component receives arrow keys, number keys, and Enter even
though the overlay appears frozen. The user sees no visual feedback, but
keystrokes are processed — allowing blind approval, session-wide auto-approve
(choice "session"), or permanent allowlist writes (choice "always") without
the user knowing.
Discovered while replicating #13618 (TUI approval overlay freezes terminal).
Fix: in useInputHandlers, when overlay.approval/clarify/confirm is active,
only intercept Ctrl+C. All other keys pass through. This makes the overlay
visually responsive so the user can see what they are selecting.
CLI (prompt_toolkit): _callback_tls in terminal_tool.py is threading.local().
set_approval_callback() is called in the main thread during run(), but the
agent executes in a background thread. _get_approval_callback() returns None
in the agent thread, falling back to stdin input() which prompt_toolkit
blocks. The user sees the approval text but cannot respond — the terminal is
unusable until the 60s timeout expires with a default "deny".
Fix: set callbacks inside run_agent() (the thread target), matching the
pattern already used by acp_adapter/server.py. Clear on thread exit to avoid
stale references.
Closes#13618
Models frequently emit bare codepoints like U+26A0 (⚠), U+2139 (ℹ),
U+2764 (❤), U+2714 (✔), U+2600 (☀), U+263A (☺) which, per Unicode, have
Emoji_Presentation=No and render as monochrome text-style glyphs in
terminals unless followed by VS16 (U+FE0F). Agent output leaked through
the TUI like `⚠ careful` instead of `⚠️ careful`.
Added `ensureEmojiPresentation` (lib/emoji.ts): scans for the curated
set of text-default codepoints and appends VS16 when the next char is
not already VS16, ZWJ, or a keycap-enclosing mark. Idempotent and
fast-pathed by a Unicode-range regex so ASCII-heavy text is untouched.
Applied once at the top of `Md`'s line parse. Hermes-ink's stringWidth
already accounts for VS16, so cursor/layout stays correct.
interruptTurn only flushed the in-flight streaming chunk (bufRef) to
the transcript before calling idle(), which wiped segmentMessages and
pendingSegmentTools. Every tool call and commentary line the agent had
already emitted in the current turn disappeared the moment the user
cancelled, even though that output is exactly what they want to keep
when they hit Ctrl+C (quote from the blitz feedback: "everything was
fine up until the point where you wanted to push to main").
Append each flushed segment message to the transcript first, then
render the in-flight partial with the `*[interrupted]*` marker and its
pendingSegmentTools. Sys-level "interrupted" note still fires when
there is nothing to preserve.
The pager overlay backing /history, /toolsets, /help and any paged slash
output only advanced with Enter/Space and closed at the end. Could not
scroll back, scroll line-by-line, or jump to endpoints.
Adds Up/Down (↑↓, j/k), PgUp (b), g/G for top/bottom, keeps existing
Enter/Space/PgDn forward-and-auto-close, and clamps offset so
over-scrolling past the last page is a no-op.
The completion popup (e.g. typing `/model`) grew from 8 rows at
compIdx=0 up to 16 rows at compIdx≥8 — the slice end was `compIdx + 8`
so every arrow-down added another rendered row until the window filled.
Reported during TUI v2 retest: "as i scroll and more options appear,
for some reason more options appear and it expands the height".
Fixed viewport (`COMPLETION_WINDOW = 16`) centered on compIdx, clamped
so it never slides past the array bounds. Renders exactly
`min(WINDOW, completions.length)` rows every frame.
A6 added a fixed-height grid (Array.from({length: VISIBLE})), but the
row <Text> itself had no wrap prop so Ink defaulted to wrap="wrap".
A sufficiently long model or provider name would wrap to a second
visual line and bounce the overall picker height right back — which
is exactly what reappeared during the TUI v2 blitz retest on /model.
Pin every picker row (and the empty-state / padding rows) to
wrap="truncate-end" so each slot is guaranteed one line. Applies
across modelPicker, sessionPicker, and skillsHub.
Selected rows in the model/session/skills pickers and approval/clarify
prompts only changed from dim gray to cornsilk, which reads as low
contrast on lighter themes and LCDs (reported during TUI v2 blitz).
Switch the selected row to `inverse bold` with the brand accent color
across modelPicker, sessionPicker, skillsHub, and prompts so the
highlight is terminal-portable and unambiguous. Unselected rows stay
dim. Also extends the sessionPicker middle meta column (which was
always dim) to inherit the row's selection state.
Warning row, "↑ N more" / "↓ N more" hints, and the items list were all
conditionally rendered, so the picker jumped in size as the selection
moved or providers without a warning slid into view.
Render every slot unconditionally: warning falls back to a blank line,
hints render an empty string when at the edge, and the items grid always
emits VISIBLE rows padded with blanks. Height is now constant across
providers, model counts, and scroll position.
/tools' local handler silently returned for anything other than enable
or disable, so /tools list and friends looked broken even though the
Python CLI already implements them (hermes_cli/main.py registers
tools_sub for list/enable/disable).
Keep the client-owned enable/disable path (which has to run
session.setSessionStartedAt + resetVisibleHistory locally) and route
every other sub through slash.exec, matching createSlashHandler's
page/sys split for long vs short output.
textInput treated the platform action-mod (Cmd on macOS, Ctrl on Linux)
as the sole word-boundary modifier. On Linux that meant:
- Ctrl+A selected all instead of jumping to line start (contra standard
readline and the hotkey doc in README.md which says `Ctrl+A` = Start
of line).
- Alt+B / Alt+F / Alt+Backspace / Alt+Delete were dropped, because
`key.meta` was never consulted — the README already documented
`Meta+B` / `Meta+F` as word nav.
Gate select-all to macOS Cmd+A (`isMac && mod && inp === 'a'`), route
Linux Ctrl+A through `actionHome`, and broaden every word-boundary
predicate (b/f/Backspace/Delete and the modified arrow keys) from `mod`
to `wordMod = mod || k.meta` so Alt chords work on Linux and Mac while
existing Ctrl/Cmd chords keep working.
Completion selection on Enter was gated to slash commands only
(value.startsWith('/')), so @file, ./path, and ~/path completions fell
through and submitted the incomplete input instead of inserting the
highlighted row.
Guard on completions.length && compReplace > 0 — useCompletion already
scopes population to slash and path tokens, and the next !== value check
keeps plain-text submits working when the completion is already applied.
Medium fixes:
- textInput.tsx: prevent silent data loss when async paste resolves
after user types — fall back to raw text insert at current cursor
instead of dropping the content entirely
- useComposerState.ts: tighten looksLikeDroppedPath to require a
second '/' or '.' for bare absolute paths, avoiding unnecessary
RPC round-trips for pasted text like /api or /help
- useComposerState.ts: add cross-reference comment linking to the
canonical _detect_file_drop() in cli.py
- osc52.ts: add 500ms timeout via Promise.race so terminals that
do not support OSC52 clipboard queries cannot hang paste
Low fixes:
- terminalSetup.ts: export isRemoteShellSession and reuse in
terminalParity.ts and useComposerState.ts (was inlined 3 times)
- useComposerState.ts: extract insertAtCursor helper, replacing 3
copies of the lead/tail spacing logic
- useComposerState.ts: remove redundant gw from handleTextPaste
useCallback dependency array
- terminalSetup.test.ts: add EACCES (read-only keybindings.json)
and unterminated block comment test coverage
Fixes from OutThisLife review:
1. Restore Linux Alt+Enter newline: textInput.tsx now uses
k.shift || (isMac ? isActionMod(k) : k.meta) so Alt+Enter
inserts a newline on Linux (was broken by isMac guard).
2. Fix image.attach response type: useComposerState.ts now uses
ImageAttachResponse (which already has remainder) instead of
InputDetectDropResponse with intersection.
3. Expand looksLikeDroppedPath test coverage with edge cases for
image extensions, file:// URIs, spaces, empty input, and
non-file URLs.
4. Make terminalParity.test.ts hermetic: terminalParityHints() now
accepts optional fileOps/homeDir and passes them through to
shouldPromptForTerminalSetup(), so tests inject mock readFile
instead of hitting the real filesystem.
Fixes from Copilot inline review:
5. Remove unused options.now parameter from configureTerminalKeybindings.
6. Replace naive stripJsonComments (full-line // only) with a proper
JSONC stripper that handles inline // comments, block comments,
trailing commas, and preserves comment-like sequences in strings.
7. Move backupFile() call from immediately after read to right before
write - backups are only created when changes will actually be
written, not on every /terminal-setup invocation.
Six small fixes, all valid review feedback:
- gatewayClient: onTimeout is now a class-field arrow so setTimeout gets a
stable reference — no per-request bind allocation (the whole point of
the original refactor).
- memory: growth rate was lifetime average of rss/uptime, which reports
phantom growth for stable processes. Now computed as delta since a
module-load baseline (STARTED_AT). Sanity-checked: 0.00 MB/hr at
steady-state, non-zero after an allocation.
- hermes_cli: NODE_OPTIONS merge is now token-aware — respects a
user-supplied --max-old-space-size (don't downgrade a deliberate 16GB
setting) and avoids duplicating --expose-gc.
- useVirtualHistory: if items shrink past the frozen range's start
mid-freeze (/clear, compaction), drop the freeze and fall through to
the normal range calc instead of collapsing to an empty mount.
- circularBuffer: throw on non-positive capacity instead of silently
producing NaN indices.
- debug slash help: /heapdump mentions HERMES_HEAPDUMP_DIR override
instead of hardcoding the default path.
Validation: tsc clean, eslint clean, vitest 102/102, growth-rate smoke
test confirms baseline=0 → post-alloc>0.
KISS/DRY sweep — drops ~90 LOC with no behavior change.
- circularBuffer: drop unused pushAll/toArray/size; fold toArray into drain
- gracefulExit: inline Cleanup type + failsafe const; signal→code as a
record instead of nested ternary; drop dead .catch on Promise.allSettled;
drop unused forceExit
- memory: inline heapDumpRoot() + writeSnapshot() (single-use); collapse
the two fd/smaps try/catch blocks behind one `swallow` helper; build
potentialLeaks functionally (array+filter) instead of imperative
push-chain; UNITS at file bottom
- memoryMonitor: inline DEFAULTS; drop unused onSnapshot; collapse
dumpedHigh/dumpedCritical bools to a single Set; single callback
dispatch line instead of duplicated if-chains
- entry.tsx: factor `dumpNotice` formatter (used twice by onHigh +
onCritical)
- useMainApp resize debounce: drop redundant `if (timer)` guards
(clearTimeout(undefined) is a no-op); init as undefined not null
- useVirtualHistory: trim wall-of-text comment to one-line intent; hoist
`const n = items.length`; split comma-declared lets; remove the
`;[start, end] = frozenRange` destructure in favor of direct Math.min
clamps; hoist `hi` init in upperBound for consistency
Validation: tsc clean (both configs), eslint clean on touched files,
vitest 102/102, build produces shebang-preserved dist/entry.js,
performHeapDump smoke-test still writes valid snapshot + diagnostics.
VSCode panel-drag fires 20+ SIGWINCHes/sec, each previously triggering
an unthrottled `terminal.resize` gateway RPC and a full transcript
re-virtualization with stale per-row height cache.
## Changes
### gateway RPC debounce (ui-tui/src/app/useMainApp.ts)
- `terminal.resize` RPC now trailing-debounced at 100 ms. React `cols`
state stays synchronous (needed for Yoga / in-process rendering),
only the round-trip to Python coalesces. Prevents gateway flood
during panel-drag / tmux-pane-resize.
### column-aware useVirtualHistory (ui-tui/src/hooks/useVirtualHistory.ts)
- New required `columns` param, plumbed through from useMainApp.
- On column change: scale every cached row height by `oldCols/newCols`
(Math.max 1, Math.round) instead of clearing. Clearing forces a
pessimistic back-walk that mounts ~190 rows at once (viewport + 2x
overscan at 1-row estimate), each a fresh marked.lexer + syntax
highlight ≈ 3 ms — ~600 ms React commit block. Scaled heights keep
the back-walk tight.
- `freezeRenders=2`: reuse pre-resize mount range for 2 renders so
already-mounted MessageRows keep their warm useMemo results. Without
this the first post-resize render would unmount + remount most rows
(pessimistic coverage) = visible flash + 150 ms+ freeze.
- `skipMeasurement` flag: first post-resize useLayoutEffect would read
PRE-resize Yoga heights (Yoga's stored values are still from the
frame before this render's calculateLayout with new width) and
poison the scaled cache. Skip the measurement loop for that one
render; next render's Yoga is correct.
## Validation
- tsc `--noEmit` clean
- eslint clean on touched files
- `vitest run`: 15 files / 102 tests passing
The renderer-level resize patterns (sync-dim-capture + microtask-
coalesced React commit, atomic BSU/ESU erase-before-paint, mouse-
tracking reassert) already live in hermes-ink's own `handleResize`;
this patch adds the matching app-layer hygiene.
Long TUI sessions were crashing Node via V8 fatal-OOM once transcripts +
reasoning blobs crossed the default 1.5–4GB heap cap. This adds defense
in depth: a bigger heap, leak-proofing the RPC hot path, bounded
diagnostic buffers, automatic heap dumps at high-water marks, and
graceful signal / uncaught handlers.
## Changes
### Heap budget
- hermes_cli/main.py: `_launch_tui` now injects `NODE_OPTIONS=
--max-old-space-size=8192 --expose-gc` (appended — does not clobber
user-supplied NODE_OPTIONS). Covers both `node dist/entry.js` and
`tsx src/entry.tsx` launch paths.
- ui-tui/src/entry.tsx: shebang rewritten to
`#!/usr/bin/env -S node --max-old-space-size=8192 --expose-gc` as a
fallback when the binary is invoked directly.
### GatewayClient (ui-tui/src/gatewayClient.ts)
- `setMaxListeners(0)` — silences spurious warnings from React hook
subscribers.
- `logs` and `bufferedEvents` replaced with fixed-capacity
CircularBuffer — O(1) push, no splice(0, …) copies under load.
- RPC timeout refactor: `setTimeout(this.onTimeout.bind(this), …, id)`
replaces the inline arrow closure that captured `method`/`params`/
`resolve`/`reject` for the full 120 s request timeout. Each Pending
record now stores its own timeout handle, `.unref()`'d so stuck
timers never keep the event loop alive, and `rejectPending()` clears
them (previously leaked the timer itself).
### Memory diagnostics (new)
- ui-tui/src/lib/memory.ts: `performHeapDump()` +
`captureMemoryDiagnostics()`. Writes heap snapshot + JSON diag
sidecar to `~/.hermes/heapdumps/` (override via
`HERMES_HEAPDUMP_DIR`). Diagnostics are written first so we still get
useful data if the snapshot crashes on very large heaps.
Captures: detached V8 contexts (closure-leak signal), active
handles/requests (`process._getActiveHandles/_getActiveRequests`),
Linux `/proc/self/fd` count + `/proc/self/smaps_rollup`, heap growth
rate (MB/hr), and auto-classifies likely leak sources.
- ui-tui/src/lib/memoryMonitor.ts: 10 s interval polling heapUsed. At
1.5 GB writes an auto heap dump (trigger=`auto-high`); at 2.5 GB
writes a final dump and exits 137 before V8 fatal-OOMs so the user
can restart cleanly. Handle is `.unref()`'d so it never holds the
process open.
### Graceful exit (new)
- ui-tui/src/lib/gracefulExit.ts: SIGINT/SIGTERM/SIGHUP run registered
cleanups through a 4 s failsafe `setTimeout` that hard-exits if
cleanup hangs.
`uncaughtException` / `unhandledRejection` are logged to stderr
instead of crashing — a transient TUI render error should not kill
an in-flight agent turn.
### Slash commands (new)
- ui-tui/src/app/slash/commands/debug.ts:
- `/heapdump` — manual snapshot + diagnostics.
- `/mem` — live heap / rss / external / array-buffer / uptime panel.
- Registered in `ui-tui/src/app/slash/registry.ts`.
### Utility (new)
- ui-tui/src/lib/circularBuffer.ts: small fixed-capacity ring buffer
with `push` / `tail(n)` / `drain()` / `clear()`. Replaces the ad-hoc
`array.splice(0, len - MAX)` pattern.
## Validation
- tsc `--noEmit` clean
- `vitest run`: 15 files, 102 tests passing
- eslint clean on all touched/new files
- build produces executable `dist/entry.js` with preserved shebang
- smoke-tested: `HERMES_HEAPDUMP_DIR=… performHeapDump('manual')`
writes both a valid `.heapsnapshot` and a `.diagnostics.json`
containing detached-contexts, active-handles, smaps_rollup.
## Env knobs
- `HERMES_HEAPDUMP_DIR` — override snapshot output dir
- `HERMES_HEAPDUMP_ON_START=1` — dump once at boot
- existing `NODE_OPTIONS` is respected and appended, not replaced
The agent emits `MEDIA:<path>` to signal file delivery to the gateway,
and `[[audio_as_voice]]` as a voice-delivery hint. The gateway strips
both before sending to Telegram/Discord/Slack, but the TUI was rendering
them raw through markdown — which is also how the intraword underscore
bug originally surfaced (`browser_screenshot_ecc…`).
At the `Md` layer, detect both sentinels on their own line:
- `MEDIA:<path>` → `▸ <path>` with the path rendered literal and wrapped
in a `Link` for OSC 8 hyperlink support (absolute paths get a
`file://` URL, so modern terminals make them click-to-open).
- `[[audio_as_voice]]` → dropped silently; it has no meaning in TUI.
Covers tests for quoted/backticked MEDIA variants, Windows drive paths,
whitespace, and the inline-in-prose case (left untouched — still
protected by the intraword-underscore guard).
The Activity accordion in ToolTrail tints red (via metaTone) when an error
item is present, but stays collapsed — the error is invisible until the
user clicks. Track the latest error id and force-open openMeta whenever
it advances. Users can still manually collapse; a new error re-opens.
